American Airlines flights from Ronald Reagan Washington (DCA) to Houston George Bush (IAH).

FLIGHT SCHEDULE
Direct Flights:
Daily 06:59 Ronald Reagan Washington (DCA) 2 09:11 Houston George Bush (IAH) A American Airlines AA 4400 Non-stop Embraer EMB 175 (E75) 3:12 Effective 2026-08-05 through 2026-09-08
Mon-Fri,Sun 13:59 Ronald Reagan Washington (DCA) 2 16:37 Houston George Bush (IAH) A American Airlines AA 4484 Non-stop Embraer EMB 175 (E75) 3:38 Valid until 2026-01-05
Mon-Fri,Sun 13:57 Ronald Reagan Washington (DCA) 2 16:44 Houston George Bush (IAH) A American Airlines AA 4520 Non-stop Embraer EMB 175 (E75) 3:47 Effective 2026-01-06 through 2026-02-11
Daily 14:15 Ronald Reagan Washington (DCA) 2 16:34 Houston George Bush (IAH) A American Airlines AA 4557 Non-stop Embraer EMB 175 (E75) 3:19 Effective 2026-09-09 through 2026-10-04
Mon-Fri 06:10 Ronald Reagan Washington (DCA) 2 09:06 Houston George Bush (IAH) A American Airlines AA 4584 Non-stop Embraer EMB 175 (E75) 3:56 Effective 2026-02-13 through 2026-03-06
Mon-Fri 06:40 Ronald Reagan Washington (DCA) 2 09:33 Houston George Bush (IAH) A American Airlines AA 4584 Non-stop Embraer EMB 175 (E75) 3:53 Effective 2026-03-09 through 2026-04-06
Thu 06:45 Ronald Reagan Washington (DCA) 2 09:38 Houston George Bush (IAH) A American Airlines AA 4584 Non-stop Embraer EMB 175 (E75) 3:53 Operates only on 2026-02-12
Mon-Fri 06:59 Ronald Reagan Washington (DCA) 2 09:50 Houston George Bush (IAH) A American Airlines AA 4584 Non-stop Embraer EMB 175 (E75) 3:51 Effective 2026-01-06 through 2026-02-11
Daily 06:59 Ronald Reagan Washington (DCA) 2 09:11 Houston George Bush (IAH) A American Airlines AA 4584 Non-stop Embraer EMB 175 (E75) 3:12 Effective 2026-04-07 through 2026-08-04
Sun 07:00 Ronald Reagan Washington (DCA) 2 09:50 Houston George Bush (IAH) A American Airlines AA 4584 Non-stop Embraer EMB 175 (E75) 3:50 Effective 2026-01-11 through 2026-02-08
Mon-Fri,Sun 13:54 Ronald Reagan Washington (DCA) 2 16:45 Houston George Bush (IAH) A American Airlines AA 4618 Non-stop Embraer EMB 175 (E75) 3:51 Effective 2026-03-08 through 2026-04-06
Mon-Fri,Sun 13:59 Ronald Reagan Washington (DCA) 2 16:50 Houston George Bush (IAH) A American Airlines AA 4618 Non-stop Embraer EMB 175 (E75) 3:51 Effective 2026-02-12 through 2026-03-06
Daily 14:11 Ronald Reagan Washington (DCA) 2 16:23 Houston George Bush (IAH) A American Airlines AA 4618 Non-stop Embraer EMB 175 (E75) 3:12 Effective 2026-04-07 through 2026-09-08
Daily 13:44 Ronald Reagan Washington (DCA) 2 16:20 Houston George Bush (IAH) A American Airlines AA 4665 Non-stop Embraer EMB 175 (E75) 3:36 Effective from 2026-10-05
Daily 07:29 Ronald Reagan Washington (DCA) 2 10:08 Houston George Bush (IAH) A American Airlines AA 4667 Non-stop Embraer EMB 175 (E75) 3:39 Effective from 2026-10-05
Sat 16:59 Ronald Reagan Washington (DCA) 2 19:50 Houston George Bush (IAH) A American Airlines AA 4694 Non-stop Embraer EMB 175 (E75) 3:51 Effective 2026-02-14 through 2026-03-07
Sat,Sun 19:45 Ronald Reagan Washington (DCA) 2 22:30 Houston George Bush (IAH) A American Airlines AA 4694 Non-stop Embraer EMB 175 (E75) 3:45 Effective 2026-01-10 through 2026-02-08
Mon-Fri 19:55 Ronald Reagan Washington (DCA) 2 22:40 Houston George Bush (IAH) A American Airlines AA 4694 Non-stop Embraer EMB 175 (E75) 3:45 Effective 2026-01-06 through 2026-02-11
Daily 19:59 Ronald Reagan Washington (DCA) 2 22:48 Houston George Bush (IAH) A American Airlines AA 4694 Non-stop Embraer EMB 175 (E75) 3:49 Effective 2026-03-08 through 2026-04-06
Daily 20:00 Ronald Reagan Washington (DCA) 2 22:12 Houston George Bush (IAH) A American Airlines AA 4694 Non-stop Embraer EMB 175 (E75) 3:12 Effective 2026-04-07 through 2026-09-08
Mon-Fri,Sun 20:10 Ronald Reagan Washington (DCA) 2 22:58 Houston George Bush (IAH) A American Airlines AA 4694 Non-stop Embraer EMB 175 (E75) 3:48 Effective 2026-02-12 through 2026-03-06
Mon-Fri,Sun 06:54 Ronald Reagan Washington (DCA) 2 09:48 Houston George Bush (IAH) A American Airlines AA 4743 Non-stop Embraer EMB 175 (E75) 3:54 Valid until 2026-01-05
Sun 16:51 Ronald Reagan Washington (DCA) 2 19:30 Houston George Bush (IAH) A American Airlines AA 4779 Non-stop Embraer EMB 175 (E75) 3:39 Operates only on 2026-01-04
Sat 20:00 Ronald Reagan Washington (DCA) 2 22:38 Houston George Bush (IAH) A American Airlines AA 4779 Non-stop Embraer EMB 175 (E75) 3:38 Valid until 2026-01-03
Daily 20:00 Ronald Reagan Washington (DCA) 2 22:25 Houston George Bush (IAH) A American Airlines AA 4779 Non-stop Embraer EMB 175 (E75) 3:25 Effective 2026-09-09 through 2026-10-04
Mon,Tue,Thu,Fri 20:15 Ronald Reagan Washington (DCA) 2 22:51 Houston George Bush (IAH) A American Airlines AA 4779 Non-stop Embraer EMB 175 (E75) 3:36 Valid until 2026-01-05
Daily 20:40 Ronald Reagan Washington (DCA) 2 23:16 Houston George Bush (IAH) A American Airlines AA 4779 Non-stop Embraer EMB 175 (E75) 3:36 Effective from 2026-10-05

A domestic route departing from the Ronald Reagan Washington airport (DCA) and arriving at Houston George Bush airport (IAH).
The flight distance is 1205 miles, or 1940 km.
The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-6 . 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 3:12 and 3:56.

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FLIGHT SCHEDULE

Direct Flights:

American Airlines AA4400

06:59

Ronald Reagan Washington (DCA) 2

09:11

Houston George Bush (IAH) A

Effective 2026-08-05 through 2026-09-08

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:12, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4484

13:59

Ronald Reagan Washington (DCA) 2

16:37

Houston George Bush (IAH) A

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:38, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4520

13:57

Ronald Reagan Washington (DCA) 2

16:44

Houston George Bush (IAH) A

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:47, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4557

14:15

Ronald Reagan Washington (DCA) 2

16:34

Houston George Bush (IAH) A

Effective 2026-09-09 through 2026-10-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:19, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4584

06:10

Ronald Reagan Washington (DCA) 2

09:06

Houston George Bush (IAH) A

Effective 2026-02-13 through 2026-03-06

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:56, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4584

06:40

Ronald Reagan Washington (DCA) 2

09:33

Houston George Bush (IAH) A

Effective 2026-03-09 through 2026-04-06

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:53, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4584

06:45

Ronald Reagan Washington (DCA) 2

09:38

Houston George Bush (IAH) A

Operates only on 2026-02-12

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 3:53, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4584

06:59

Ronald Reagan Washington (DCA) 2

09:50

Houston George Bush (IAH) A

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:51, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4584

06:59

Ronald Reagan Washington (DCA) 2

09:11

Houston George Bush (IAH) A

Effective 2026-04-07 through 2026-08-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:12, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4584

07:00

Ronald Reagan Washington (DCA) 2

09:50

Houston George Bush (IAH) A

Effective 2026-01-11 through 2026-02-08

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:50, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4618

13:54

Ronald Reagan Washington (DCA) 2

16:45

Houston George Bush (IAH) A

Effective 2026-03-08 through 2026-04-06

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:51, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4618

13:59

Ronald Reagan Washington (DCA) 2

16:50

Houston George Bush (IAH) A

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:51, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4618

14:11

Ronald Reagan Washington (DCA) 2

16:23

Houston George Bush (IAH) A

Effective 2026-04-07 through 2026-09-08

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:12, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4665

13:44

Ronald Reagan Washington (DCA) 2

16:20

Houston George Bush (IAH) A

Effective from 2026-10-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:36, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4667

07:29

Ronald Reagan Washington (DCA) 2

10:08

Houston George Bush (IAH) A

Effective from 2026-10-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:39, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4694

16:59

Ronald Reagan Washington (DCA) 2

19:50

Houston George Bush (IAH) A

Effective 2026-02-14 through 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:51, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4694

19:45

Ronald Reagan Washington (DCA) 2

22:30

Houston George Bush (IAH) A

Effective 2026-01-10 through 2026-02-08

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun

Duration: 3:45, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4694

19:55

Ronald Reagan Washington (DCA) 2

22:40

Houston George Bush (IAH) A

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:45, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4694

19:59

Ronald Reagan Washington (DCA) 2

22:48

Houston George Bush (IAH) A

Effective 2026-03-08 through 2026-04-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:49, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4694

20:00

Ronald Reagan Washington (DCA) 2

22:12

Houston George Bush (IAH) A

Effective 2026-04-07 through 2026-09-08

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:12, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4694

20:10

Ronald Reagan Washington (DCA) 2

22:58

Houston George Bush (IAH) A

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:48, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4743

06:54

Ronald Reagan Washington (DCA) 2

09:48

Houston George Bush (IAH) A

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:54, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4779

16:51

Ronald Reagan Washington (DCA) 2

19:30

Houston George Bush (IAH) A

Operates only on 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:39, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4779

20:00

Ronald Reagan Washington (DCA) 2

22:38

Houston George Bush (IAH) A

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:38, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4779

20:00

Ronald Reagan Washington (DCA) 2

22:25

Houston George Bush (IAH) A

Effective 2026-09-09 through 2026-10-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:25, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4779

20:15

Ronald Reagan Washington (DCA) 2

22:51

Houston George Bush (IAH) A

Valid until 2026-01-05

Mon

Tue

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:36, non-stop
Embraer EMB 175 (E75)

Direct Flights:

American Airlines AA4779

20:40

Ronald Reagan Washington (DCA) 2

23:16

Houston George Bush (IAH) A

Effective from 2026-10-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:36, non-stop
Embraer EMB 175 (E75)

A domestic route departing from the Ronald Reagan Washington airport (DCA) and arriving at Houston George Bush airport (IAH).
The flight distance is 1205 miles, or 1940 km.
The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-6 . 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 3:12 and 3:56.

All DCA-IAH flights

All American Airlines flights

Return (IAH-DCA) flights

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