All airlines flying from Ontario, Los Angeles (ONT) to Atlanta (ATL).

FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Thu,Sun 22:59 Ontario, Los Angeles (ONT) 2 06:19 Atlanta (ATL) S LATAM Airlines LA 7120 Non-stop Airbus A321 (321) 4:20 Effective 2026-08-16 through 2026-09-03 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Mon-Thu,Sun 22:59 Ontario, Los Angeles (ONT) 2 06:19 Atlanta (ATL) S LATAM Airlines LA 7120 Non-stop Airbus A321 (321) 4:20 Effective 2026-09-07 through 2026-10-05 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Mon-Thu,Sun 22:59 Ontario, Los Angeles (ONT) 2 06:08 Atlanta (ATL) S LATAM Airlines LA 7120 Non-stop Airbus A321 (321) 4:09 Effective 2026-10-06 through 2026-10-29 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Daily 07:00 Ontario, Los Angeles (ONT) 2 14:18 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:18 Effective 2026-04-13 through 2026-07-06 Codeshare flight, operated by Delta Air Lines.(DL 761)
Daily 07:00 Ontario, Los Angeles (ONT) 2 14:24 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:24 Effective 2026-07-07 through 2026-09-10 Codeshare flight, operated by Delta Air Lines.(DL 761)
Tue,Thu 07:00 Ontario, Los Angeles (ONT) 2 14:24 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:24 Effective 2026-09-15 through 2026-09-29 Codeshare flight, operated by Delta Air Lines.(DL 761)
Tue 07:00 Ontario, Los Angeles (ONT) 2 14:13 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:13 Effective 2026-10-06 through 2026-10-27 Codeshare flight, operated by Delta Air Lines.(DL 761)
Daily 22:20 Ontario, Los Angeles (ONT) 2 05:28 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:08 Effective 2026-02-12 through 2026-03-06 Codeshare flight, operated by Delta Air Lines.(DL 761) The flight arrives 1 day after departure.
Sat 22:20 Ontario, Los Angeles (ONT) 2 06:28 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:08 Operates only on 2026-03-07 Codeshare flight, operated by Delta Air Lines.(DL 761) The flight arrives 1 day after departure.
Daily 22:30 Ontario, Los Angeles (ONT) 2 05:35 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:05 Effective 2026-01-06 through 2026-01-25 Codeshare flight, operated by Delta Air Lines.(DL 761) The flight arrives 1 day after departure.
Tue-Sun 22:30 Ontario, Los Angeles (ONT) 2 05:35 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:05 Effective 2026-01-27 through 2026-02-08 Codeshare flight, operated by Delta Air Lines.(DL 761) The flight arrives 1 day after departure.
Mon-Wed 22:30 Ontario, Los Angeles (ONT) 2 05:35 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:05 Effective 2026-02-09 through 2026-02-11 Codeshare flight, operated by Delta Air Lines.(DL 761) The flight arrives 1 day after departure.
Daily 22:30 Ontario, Los Angeles (ONT) 2 05:34 Atlanta (ATL) S LATAM Airlines LA 7121 Non-stop Airbus A321 (321) 4:04 Effective 2026-03-08 through 2026-04-12 Codeshare flight, operated by Delta Air Lines.(DL 761) The flight arrives 1 day after departure.
Sun 11:05 Ontario, Los Angeles (ONT) 2 18:15 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:10 Operates only on 2026-01-04 Codeshare flight, operated by Delta Air Lines.(DL 665)
Mon,Tue,Fri,Sat 11:10 Ontario, Los Angeles (ONT) 2 18:20 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:10 Valid until 2026-01-03 Codeshare flight, operated by Delta Air Lines.(DL 665)
Wed,Thu,Sat 11:15 Ontario, Los Angeles (ONT) 2 18:25 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:10 Valid until 2026-01-01 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 12:00 Ontario, Los Angeles (ONT) 2 19:20 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:20 Effective 2026-04-13 through 2026-07-06 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 12:00 Ontario, Los Angeles (ONT) 2 19:30 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:30 Effective 2026-07-07 through 2026-08-14 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 12:41 Ontario, Los Angeles (ONT) 2 19:50 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:09 Effective 2026-01-05 through 2026-01-18 Codeshare flight, operated by Delta Air Lines.(DL 665)
Mon,Sun 12:41 Ontario, Los Angeles (ONT) 2 19:49 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:08 Effective 2026-01-19 through 2026-01-26 Codeshare flight, operated by Delta Air Lines.(DL 665)
Tue-Sat 12:41 Ontario, Los Angeles (ONT) 2 19:50 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:09 Effective 2026-01-20 through 2026-01-31 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 12:41 Ontario, Los Angeles (ONT) 2 19:50 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:09 Effective 2026-02-01 through 2026-02-11 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 12:45 Ontario, Los Angeles (ONT) 2 19:49 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:04 Effective 2026-03-08 through 2026-04-12 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 13:15 Ontario, Los Angeles (ONT) 2 20:30 Atlanta (ATL) S LATAM Airlines LA 7123 Non-stop Airbus A321 (321) 4:15 Effective 2026-02-12 through 2026-03-07 Codeshare flight, operated by Delta Air Lines.(DL 665)
Mon,Wed,Fri-Sun 07:00 Ontario, Los Angeles (ONT) 2 14:24 Atlanta (ATL) S LATAM Airlines LA 7127 Non-stop Airbus A321 (321) 4:24 Effective 2026-09-11 through 2026-09-30 Codeshare flight, operated by Delta Air Lines.(DL 761)
Mon,Thu-Sun 07:00 Ontario, Los Angeles (ONT) 2 14:24 Atlanta (ATL) S LATAM Airlines LA 7127 Non-stop Airbus A321 (321) 4:24 Effective 2026-10-01 through 2026-10-05 Codeshare flight, operated by Delta Air Lines.(DL 761)
Mon,Wed-Sun 07:00 Ontario, Los Angeles (ONT) 2 14:13 Atlanta (ATL) S LATAM Airlines LA 7127 Non-stop Airbus A321 (321) 4:13 Effective 2026-10-07 through 2026-10-24 Codeshare flight, operated by Delta Air Lines.(DL 761)
Wed-Sat 07:00 Ontario, Los Angeles (ONT) 2 14:13 Atlanta (ATL) S LATAM Airlines LA 7127 Non-stop Airbus A321 (321) 4:13 Effective from 2026-10-28 Codeshare flight, operated by Delta Air Lines.(DL 761)
Sun 11:05 Ontario, Los Angeles (ONT) 2 18:15 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:10 Operates only on 2026-01-04 Codeshare flight, operated by Delta Air Lines.(DL 665)
Mon,Tue,Fri,Sat 11:10 Ontario, Los Angeles (ONT) 2 18:20 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:10 Valid until 2026-01-03 Codeshare flight, operated by Delta Air Lines.(DL 665)
Wed,Thu,Sat 11:15 Ontario, Los Angeles (ONT) 2 18:25 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:10 Valid until 2026-01-01 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 12:41 Ontario, Los Angeles (ONT) 2 19:50 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:09 Effective 2026-01-05 through 2026-01-18 Codeshare flight, operated by Delta Air Lines.(DL 665)
Mon,Sun 12:41 Ontario, Los Angeles (ONT) 2 19:49 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:08 Effective 2026-01-19 through 2026-01-26 Codeshare flight, operated by Delta Air Lines.(DL 665)
Tue-Sat 12:41 Ontario, Los Angeles (ONT) 2 19:50 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:09 Effective 2026-01-20 through 2026-01-31 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 12:41 Ontario, Los Angeles (ONT) 2 19:50 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:09 Effective 2026-02-01 through 2026-02-11 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 12:45 Ontario, Los Angeles (ONT) 2 19:49 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:04 Effective 2026-03-08 through 2026-03-28 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 13:15 Ontario, Los Angeles (ONT) 2 20:30 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:15 Effective 2026-02-12 through 2026-02-24 Codeshare flight, operated by Delta Air Lines.(DL 665)
Daily 13:15 Ontario, Los Angeles (ONT) 2 20:30 Atlanta (ATL) S KLM KL 7129 Non-stop Airbus A321 (321) 4:15 Effective 2026-02-26 through 2026-03-07 Codeshare flight, operated by Delta Air Lines.(DL 665)
Mon,Sun 07:00 Ontario, Los Angeles (ONT) 2 14:13 Atlanta (ATL) S LATAM Airlines LA 7159 Non-stop Airbus A321 (321) 4:13 Effective 2026-10-25 through 2026-10-26 Codeshare flight, operated by Delta Air Lines.(DL 761)
Daily 22:59 Ontario, Los Angeles (ONT) 2 06:13 Atlanta (ATL) S LATAM Airlines LA 7190 Non-stop Airbus A321 (321) 4:14 Effective 2026-06-07 through 2026-07-06 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Daily 22:59 Ontario, Los Angeles (ONT) 2 06:19 Atlanta (ATL) S LATAM Airlines LA 7190 Non-stop Airbus A321 (321) 4:20 Effective 2026-07-07 through 2026-08-13 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Daily 22:59 Ontario, Los Angeles (ONT) 2 06:13 Atlanta (ATL) S KLM KL 7253 Non-stop Airbus A321 (321) 4:14 Effective 2026-04-13 through 2026-07-06 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Daily 22:59 Ontario, Los Angeles (ONT) 2 06:19 Atlanta (ATL) S KLM KL 7253 Non-stop Airbus A321 (321) 4:20 Effective 2026-07-07 through 2026-08-14 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Mon-Fri,Sun 22:59 Ontario, Los Angeles (ONT) 2 06:19 Atlanta (ATL) S KLM KL 7253 Non-stop Airbus A321 (321) 4:20 Effective 2026-08-16 through 2026-09-04 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Mon-Fri,Sun 22:59 Ontario, Los Angeles (ONT) 2 06:19 Atlanta (ATL) S KLM KL 7253 Non-stop Airbus A321 (321) 4:20 Effective 2026-09-07 through 2026-10-05 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Mon-Fri,Sun 22:59 Ontario, Los Angeles (ONT) 2 06:08 Atlanta (ATL) S KLM KL 7253 Non-stop Airbus A321 (321) 4:09 Effective 2026-10-06 through 2026-10-22 Codeshare flight, operated by Delta Air Lines.(DL 2891) The flight arrives 1 day after departure.
Daily 12:00 Ontario, Los Angeles (ONT) 2 19:14 Atlanta (ATL) S KLM KL 7267 Non-stop Airbus A321 (321) 4:14 Effective from 2026-10-25 Codeshare flight, operated by Delta Air Lines.(DL 665)

1 2 3

A domestic route departing from the Ontario, Los Angeles airport (ONT) and arriving at Atlanta airport (ATL).
The flight distance is 1895 miles, or 3049 km.
The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
For direct flights, the flight time varies between 4:04 and 4:30.

Return (ATL-ONT) flights

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All airlines flying from Ontario, Los Angeles (ONT) to Atlanta (ATL).

FLIGHT SCHEDULE

Direct Codeshare Flights:

LATAM Airlines LA7120

22:59

Ontario, Los Angeles (ONT) 2

06:19(+1)

Atlanta (ATL) S

Effective 2026-08-16 through 2026-09-03

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:20, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7120

22:59

Ontario, Los Angeles (ONT) 2

06:19(+1)

Atlanta (ATL) S

Effective 2026-09-07 through 2026-10-05

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:20, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7120

22:59

Ontario, Los Angeles (ONT) 2

06:08(+1)

Atlanta (ATL) S

Effective 2026-10-06 through 2026-10-29

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:09, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7121

07:00

Ontario, Los Angeles (ONT) 2

14:18

Atlanta (ATL) S

Effective 2026-04-13 through 2026-07-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:18, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7121

07:00

Ontario, Los Angeles (ONT) 2

14:24

Atlanta (ATL) S

Effective 2026-07-07 through 2026-09-10

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:24, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7121

07:00

Ontario, Los Angeles (ONT) 2

14:24

Atlanta (ATL) S

Effective 2026-09-15 through 2026-09-29

Mon
-

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:24, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7121

07:00

Ontario, Los Angeles (ONT) 2

14:13

Atlanta (ATL) S

Effective 2026-10-06 through 2026-10-27

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:13, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7121

22:20

Ontario, Los Angeles (ONT) 2

05:28(+1)

Atlanta (ATL) S

Effective 2026-02-12 through 2026-03-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:08, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7121

22:20

Ontario, Los Angeles (ONT) 2

06:28(+1)

Atlanta (ATL) S

Operates only on 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:08, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7121

22:30

Ontario, Los Angeles (ONT) 2

05:35(+1)

Atlanta (ATL) S

Effective 2026-01-06 through 2026-01-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:05, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7121

22:30

Ontario, Los Angeles (ONT) 2

05:35(+1)

Atlanta (ATL) S

Effective 2026-01-27 through 2026-02-08

Mon
-

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:05, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7121

22:30

Ontario, Los Angeles (ONT) 2

05:35(+1)

Atlanta (ATL) S

Effective 2026-02-09 through 2026-02-11

Mon

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:05, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7121

22:30

Ontario, Los Angeles (ONT) 2

05:34(+1)

Atlanta (ATL) S

Effective 2026-03-08 through 2026-04-12

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:04, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7123

11:05

Ontario, Los Angeles (ONT) 2

18:15

Atlanta (ATL) S

Operates only on 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:10, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

11:10

Ontario, Los Angeles (ONT) 2

18:20

Atlanta (ATL) S

Valid until 2026-01-03

Mon

Tue

Wed
-

Thu
-

Fri

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:10, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

11:15

Ontario, Los Angeles (ONT) 2

18:25

Atlanta (ATL) S

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:10, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

12:00

Ontario, Los Angeles (ONT) 2

19:20

Atlanta (ATL) S

Effective 2026-04-13 through 2026-07-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:20, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

12:00

Ontario, Los Angeles (ONT) 2

19:30

Atlanta (ATL) S

Effective 2026-07-07 through 2026-08-14

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:30, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

12:41

Ontario, Los Angeles (ONT) 2

19:50

Atlanta (ATL) S

Effective 2026-01-05 through 2026-01-18

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:09, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

12:41

Ontario, Los Angeles (ONT) 2

19:49

Atlanta (ATL) S

Effective 2026-01-19 through 2026-01-26

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:08, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

12:41

Ontario, Los Angeles (ONT) 2

19:50

Atlanta (ATL) S

Effective 2026-01-20 through 2026-01-31

Mon
-

Tue

Wed

Thu

Fri

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:09, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

12:41

Ontario, Los Angeles (ONT) 2

19:50

Atlanta (ATL) S

Effective 2026-02-01 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:09, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

12:45

Ontario, Los Angeles (ONT) 2

19:49

Atlanta (ATL) S

Effective 2026-03-08 through 2026-04-12

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:04, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7123

13:15

Ontario, Los Angeles (ONT) 2

20:30

Atlanta (ATL) S

Effective 2026-02-12 through 2026-03-07

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:15, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7127

07:00

Ontario, Los Angeles (ONT) 2

14:24

Atlanta (ATL) S

Effective 2026-09-11 through 2026-09-30

Mon

Tue
-

Wed

Thu
-

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:24, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7127

07:00

Ontario, Los Angeles (ONT) 2

14:24

Atlanta (ATL) S

Effective 2026-10-01 through 2026-10-05

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:24, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7127

07:00

Ontario, Los Angeles (ONT) 2

14:13

Atlanta (ATL) S

Effective 2026-10-07 through 2026-10-24

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:13, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7127

07:00

Ontario, Los Angeles (ONT) 2

14:13

Atlanta (ATL) S

Effective from 2026-10-28

Mon
-

Tue
-

Wed

Thu

Fri

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:13, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

11:05

Ontario, Los Angeles (ONT) 2

18:15

Atlanta (ATL) S

Operates only on 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:10, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

11:10

Ontario, Los Angeles (ONT) 2

18:20

Atlanta (ATL) S

Valid until 2026-01-03

Mon

Tue

Wed
-

Thu
-

Fri

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:10, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

11:15

Ontario, Los Angeles (ONT) 2

18:25

Atlanta (ATL) S

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:10, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

12:41

Ontario, Los Angeles (ONT) 2

19:50

Atlanta (ATL) S

Effective 2026-01-05 through 2026-01-18

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:09, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

12:41

Ontario, Los Angeles (ONT) 2

19:49

Atlanta (ATL) S

Effective 2026-01-19 through 2026-01-26

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:08, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

12:41

Ontario, Los Angeles (ONT) 2

19:50

Atlanta (ATL) S

Effective 2026-01-20 through 2026-01-31

Mon
-

Tue

Wed

Thu

Fri

Sat

Sun
-

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:09, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

12:41

Ontario, Los Angeles (ONT) 2

19:50

Atlanta (ATL) S

Effective 2026-02-01 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:09, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

12:45

Ontario, Los Angeles (ONT) 2

19:49

Atlanta (ATL) S

Effective 2026-03-08 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:04, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

13:15

Ontario, Los Angeles (ONT) 2

20:30

Atlanta (ATL) S

Effective 2026-02-12 through 2026-02-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:15, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

KLM KL7129

13:15

Ontario, Los Angeles (ONT) 2

20:30

Atlanta (ATL) S

Effective 2026-02-26 through 2026-03-07

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:15, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7159

07:00

Ontario, Los Angeles (ONT) 2

14:13

Atlanta (ATL) S

Effective 2026-10-25 through 2026-10-26

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 761)

Duration: 4:13, non-stop
Airbus A321 (321)

Direct Codeshare Flights:

LATAM Airlines LA7190

22:59

Ontario, Los Angeles (ONT) 2

06:13(+1)

Atlanta (ATL) S

Effective 2026-06-07 through 2026-07-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:14, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

LATAM Airlines LA7190

22:59

Ontario, Los Angeles (ONT) 2

06:19(+1)

Atlanta (ATL) S

Effective 2026-07-07 through 2026-08-13

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:20, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

KLM KL7253

22:59

Ontario, Los Angeles (ONT) 2

06:13(+1)

Atlanta (ATL) S

Effective 2026-04-13 through 2026-07-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:14, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

KLM KL7253

22:59

Ontario, Los Angeles (ONT) 2

06:19(+1)

Atlanta (ATL) S

Effective 2026-07-07 through 2026-08-14

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:20, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

KLM KL7253

22:59

Ontario, Los Angeles (ONT) 2

06:19(+1)

Atlanta (ATL) S

Effective 2026-08-16 through 2026-09-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:20, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

KLM KL7253

22:59

Ontario, Los Angeles (ONT) 2

06:19(+1)

Atlanta (ATL) S

Effective 2026-09-07 through 2026-10-05

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:20, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

KLM KL7253

22:59

Ontario, Los Angeles (ONT) 2

06:08(+1)

Atlanta (ATL) S

Effective 2026-10-06 through 2026-10-22

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by Delta Air Lines. (DL 2891)

Duration: 4:09, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

KLM KL7267

12:00

Ontario, Los Angeles (ONT) 2

19:14

Atlanta (ATL) S

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Delta Air Lines. (DL 665)

Duration: 4:14, non-stop
Airbus A321 (321)

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A domestic route departing from the Ontario, Los Angeles airport (ONT) and arriving at Atlanta airport (ATL).
The flight distance is 1895 miles, or 3049 km.
The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
For direct flights, the flight time varies between 4:04 and 4:30.

Return (ATL-ONT) flights

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