United Airlines flights from Chicago O'Hare (ORD) to Buffalo (BUF).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 07:10 Chicago O'Hare (ORD) 1 09:49 Buffalo (BUF)
United Airlines UA 265 Non-stop Airbus A319 (319) 1:39 Effective from 2026-05-21
Thu 13:55 Chicago O'Hare (ORD) 1 16:34 Buffalo (BUF)
United Airlines UA 1117 Non-stop Airbus A319 (319) 1:39 Operates only on 2026-01-01
Daily 17:50 Chicago O'Hare (ORD) 1 20:31 Buffalo (BUF)
United Airlines UA 1335 Non-stop Boeing 737-700 (73G) 1:41 Effective 2026-03-29 through 2026-05-20
Daily 17:50 Chicago O'Hare (ORD) 1 20:31 Buffalo (BUF)
United Airlines UA 1335 Non-stop Boeing 737 MAX 8 (7M8) 1:41 Effective from 2026-05-21
Daily 18:02 Chicago O'Hare (ORD) 1 20:54 Buffalo (BUF)
United Airlines UA 1335 Non-stop Airbus A320 (320) 1:52 Valid until 2026-01-04
Mon 18:02 Chicago O'Hare (ORD) 1 20:54 Buffalo (BUF)
United Airlines UA 1335 Non-stop Airbus A319 (319) 1:52 Operates only on 2026-01-05
Daily 18:05 Chicago O'Hare (ORD) 1 20:46 Buffalo (BUF)
United Airlines UA 1335 Non-stop Airbus A319 (319) 1:41 Effective 2026-03-05 through 2026-03-28
Daily 18:10 Chicago O'Hare (ORD) 1 20:51 Buffalo (BUF)
United Airlines UA 1335 Non-stop Airbus A319 (319) 1:41 Effective 2026-02-12 through 2026-03-04
Daily 17:50 Chicago O'Hare (ORD) 1 20:29 Buffalo (BUF)
United Airlines UA 1946 Non-stop Airbus A319 (319) 1:39 Effective 2026-01-06 through 2026-02-06
Sat 17:50 Chicago O'Hare (ORD) 1 20:29 Buffalo (BUF)
United Airlines UA 1946 Non-stop Boeing 737-800 (738) 1:39 Operates only on 2026-02-07
Mon-Wed,Sun 17:50 Chicago O'Hare (ORD) 1 20:29 Buffalo (BUF)
United Airlines UA 1946 Non-stop Airbus A319 (319) 1:39 Effective 2026-02-08 through 2026-02-11
Daily 14:12 Chicago O'Hare (ORD) 1 16:47 Buffalo (BUF)
United Airlines UA 2226 Non-stop Boeing 737-700 (73G) 1:35 Effective 2026-04-30 through 2026-05-20
Daily 14:12 Chicago O'Hare (ORD) 1 16:47 Buffalo (BUF)
United Airlines UA 2226 Non-stop Boeing 737-800 (738) 1:35 Effective from 2026-05-21
Mon-Fri 13:55 Chicago O'Hare (ORD) 2 16:42 Buffalo (BUF)
United Airlines UA 3491 Non-stop Embraer EMB 175 (E7W) 1:47 Effective 2026-03-05 through 2026-03-27
Daily 14:12 Chicago O'Hare (ORD) 2 16:57 Buffalo (BUF)
United Airlines UA 3491 Non-stop Embraer EMB 175 (E7W) 1:45 Effective 2026-03-29 through 2026-04-29
Daily 10:30 Chicago O'Hare (ORD) 2 13:12 Buffalo (BUF)
United Airlines UA 4382 Non-stop Canadair CRJ 550 (CR5) 1:42 Effective 2026-02-12 through 2026-03-04
Daily 10:35 Chicago O'Hare (ORD) 2 13:24 Buffalo (BUF)
United Airlines UA 4382 Non-stop Canadair CRJ 550 (CR5) 1:49 Valid until 2026-01-05
Daily 10:35 Chicago O'Hare (ORD) 2 13:10 Buffalo (BUF)
United Airlines UA 4382 Non-stop Canadair CRJ 550 (CR5) 1:35 Effective from 2026-03-29
Mon,Tue 10:35 Chicago O'Hare (ORD) 2 13:24 Buffalo (BUF)
United Airlines UA 4403 Non-stop Canadair CRJ 550 (CR5) 1:49 Effective 2026-02-09 through 2026-02-10
Sat 10:35 Chicago O'Hare (ORD) 2 13:24 Buffalo (BUF)
United Airlines UA 4417 Non-stop Canadair CRJ 550 (CR5) 1:49 Effective 2026-01-10 through 2026-02-07
Mon-Fri,Sun 13:55 Chicago O'Hare (ORD) 2 16:44 Buffalo (BUF)
United Airlines UA 4449 Non-stop Canadair CRJ 550 (CR5) 1:49 Effective 2026-01-25 through 2026-02-03
Mon-Fri,Sun 13:55 Chicago O'Hare (ORD) 2 16:44 Buffalo (BUF)
United Airlines UA 4449 Non-stop Canadair CRJ 550 (CR5) 1:49 Effective 2026-02-05 through 2026-02-11
Thu 13:55 Chicago O'Hare (ORD) 2 16:37 Buffalo (BUF)
United Airlines UA 4546 Non-stop Canadair CRJ 550 (CR5) 1:42 Operates only on 2026-02-12
Thu 13:55 Chicago O'Hare (ORD) 2 16:42 Buffalo (BUF)
United Airlines UA 5376 Non-stop Embraer EMB 175 (E7W) 1:47 Effective 2026-02-19 through 2026-02-26
Mon,Fri,Sun 13:58 Chicago O'Hare (ORD) 2 16:43 Buffalo (BUF)
United Airlines UA 5376 Non-stop Embraer EMB 175 (E7W) 1:45 Effective 2026-02-13 through 2026-03-02
Daily 10:35 Chicago O'Hare (ORD) 2 13:17 Buffalo (BUF)
United Airlines UA 5428 Non-stop Canadair CRJ 550 (CR5) 1:42 Effective 2026-03-05 through 2026-03-28
Mon-Fri,Sun 10:35 Chicago O'Hare (ORD) 2 13:24 Buffalo (BUF)
United Airlines UA 5529 Non-stop Canadair CRJ 550 (CR5) 1:49 Effective 2026-01-06 through 2026-02-08
Wed 10:35 Chicago O'Hare (ORD) 2 13:24 Buffalo (BUF)
United Airlines UA 5529 Non-stop Canadair CRJ 550 (CR5) 1:49 Operates only on 2026-02-11
Daily 07:10 Chicago O'Hare (ORD) 2 10:00 Buffalo (BUF)
United Airlines UA 5553 Non-stop Embraer EMB 175 (E7W) 1:50 Effective 2026-03-29 through 2026-04-29
Daily 07:10 Chicago O'Hare (ORD) 2 09:49 Buffalo (BUF)
United Airlines UA 5553 Non-stop Canadair CRJ 550 (CR5) 1:39 Effective 2026-04-30 through 2026-05-20
Mon-Fri,Sun 13:55 Chicago O'Hare (ORD) 2 16:44 Buffalo (BUF)
United Airlines UA 5597 Non-stop Canadair CRJ 550 (CR5) 1:49 Effective 2026-01-06 through 2026-01-23
Wed 13:55 Chicago O'Hare (ORD) 2 16:44 Buffalo (BUF)
United Airlines UA 5597 Non-stop Canadair CRJ 550 (CR5) 1:49 Operates only on 2026-02-04
Sun 14:31 Chicago O'Hare (ORD) 2 17:11 Buffalo (BUF)
United Airlines UA 5601 Non-stop Canadair CRJ 550 (CR5) 1:40 Effective 2026-03-08 through 2026-03-22
Mon-Wed,Fri-Sun 14:04 Chicago O'Hare (ORD) 2 16:54 Buffalo (BUF)
United Airlines UA 5744 Non-stop Embraer EMB 175 (E7W) 1:50 Valid until 2026-01-05




Feedback - Disclaimer - Privacy
FlightMapper.net Flight Search Countries Airlines
LANGUAGES
United Airlines flights from Chicago O'Hare (ORD) to Buffalo (BUF).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA265
07:10
Chicago O'Hare (ORD) 1

09:49
Buffalo (BUF)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1117
13:55
Chicago O'Hare (ORD) 1

16:34
Buffalo (BUF)
Operates only on 2026-01-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:39, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1335
17:50
Chicago O'Hare (ORD) 1

20:31
Buffalo (BUF)
Effective 2026-03-29 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:41, non-stop
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA1335
17:50
Chicago O'Hare (ORD) 1

20:31
Buffalo (BUF)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:41, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1335
18:02
Chicago O'Hare (ORD) 1

20:54
Buffalo (BUF)
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:52, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA1335
18:02
Chicago O'Hare (ORD) 1

20:54
Buffalo (BUF)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:52, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1335
18:05
Chicago O'Hare (ORD) 1

20:46
Buffalo (BUF)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:41, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1335
18:10
Chicago O'Hare (ORD) 1

20:51
Buffalo (BUF)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:41, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1946
17:50
Chicago O'Hare (ORD) 1

20:29
Buffalo (BUF)
Effective 2026-01-06 through 2026-02-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1946
17:50
Chicago O'Hare (ORD) 1

20:29
Buffalo (BUF)
Operates only on 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:39, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1946
17:50
Chicago O'Hare (ORD) 1

20:29
Buffalo (BUF)
Effective 2026-02-08 through 2026-02-11
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:39, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA2226
14:12
Chicago O'Hare (ORD) 1

16:47
Buffalo (BUF)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:35, non-stop
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA2226
14:12
Chicago O'Hare (ORD) 1

16:47
Buffalo (BUF)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:35, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA3491
13:55
Chicago O'Hare (ORD) 2

16:42
Buffalo (BUF)
Effective 2026-03-05 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:47, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3491
14:12
Chicago O'Hare (ORD) 2

16:57
Buffalo (BUF)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4382
10:30
Chicago O'Hare (ORD) 2

13:12
Buffalo (BUF)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:42, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4382
10:35
Chicago O'Hare (ORD) 2

13:24
Buffalo (BUF)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4382
10:35
Chicago O'Hare (ORD) 2

13:10
Buffalo (BUF)
Effective from 2026-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:35, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4403
10:35
Chicago O'Hare (ORD) 2

13:24
Buffalo (BUF)
Effective 2026-02-09 through 2026-02-10
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4417
10:35
Chicago O'Hare (ORD) 2

13:24
Buffalo (BUF)
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4449
13:55
Chicago O'Hare (ORD) 2

16:44
Buffalo (BUF)
Effective 2026-01-25 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4449
13:55
Chicago O'Hare (ORD) 2

16:44
Buffalo (BUF)
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4546
13:55
Chicago O'Hare (ORD) 2

16:37
Buffalo (BUF)
Operates only on 2026-02-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:42, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5376
13:55
Chicago O'Hare (ORD) 2

16:42
Buffalo (BUF)
Effective 2026-02-19 through 2026-02-26
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:47, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5376
13:58
Chicago O'Hare (ORD) 2

16:43
Buffalo (BUF)
Effective 2026-02-13 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:45, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5428
10:35
Chicago O'Hare (ORD) 2

13:17
Buffalo (BUF)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:42, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5529
10:35
Chicago O'Hare (ORD) 2

13:24
Buffalo (BUF)
Effective 2026-01-06 through 2026-02-08
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5529
10:35
Chicago O'Hare (ORD) 2

13:24
Buffalo (BUF)
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5553
07:10
Chicago O'Hare (ORD) 2

10:00
Buffalo (BUF)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:50, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5553
07:10
Chicago O'Hare (ORD) 2

09:49
Buffalo (BUF)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5597
13:55
Chicago O'Hare (ORD) 2

16:44
Buffalo (BUF)
Effective 2026-01-06 through 2026-01-23
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5597
13:55
Chicago O'Hare (ORD) 2

16:44
Buffalo (BUF)
Operates only on 2026-02-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5601
14:31
Chicago O'Hare (ORD) 2

17:11
Buffalo (BUF)
Effective 2026-03-08 through 2026-03-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:40, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5744
14:04
Chicago O'Hare (ORD) 2

16:54
Buffalo (BUF)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
Duration: 1:50, non-stop
Embraer EMB 175 (E7W)
  • A domestic route departing from the Chicago O'Hare airport (ORD) and arriving at Buffalo airport (BUF).
  • The flight distance is 472 miles, or 759 km.
  • The timezone of the departure airport is UTC-6 , 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 1:35 and 1:52.
All ORD-BUF flights
All United Airlines flights
Return (BUF-ORD) flights
Feedback     -     Disclaimer     -     Privacy