United Airlines flights from Washington Dulles (IAD) to Buffalo (BUF).

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Wed 22:18 Washington Dulles (IAD) 23:48 Buffalo (BUF)
United Airlines UA 3405 Non-stop Embraer EMB 175 (E7W) 1:30 Operates only on 2026-02-11
Mon-Thu,Sun 08:20 Washington Dulles (IAD) 09:46 Buffalo (BUF)
United Airlines UA 3585 Non-stop Embraer EMB 175 (E7W) 1:26 Valid until 2026-01-05
Sat 08:20 Washington Dulles (IAD) 09:46 Buffalo (BUF)
United Airlines UA 3585 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:26 Operates only on 2026-01-03
Daily 22:18 Washington Dulles (IAD) 23:44 Buffalo (BUF)
United Airlines UA 3682 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2026-02-12 through 2026-03-04
Daily 08:25 Washington Dulles (IAD) 09:47 Buffalo (BUF)
United Airlines UA 4012 Non-stop Embraer EMB 175 (E7W) 1:22 Effective 2026-04-30 through 2026-05-20
Daily 22:15 Washington Dulles (IAD) 23:26 Buffalo (BUF)
United Airlines UA 4060 Non-stop Embraer EMB 175 (E7W) 1:11 Effective 2026-04-30 through 2026-05-20
Tue 08:20 Washington Dulles (IAD) 09:46 Buffalo (BUF)
United Airlines UA 4236 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:26 Operates only on 2026-01-06
Mon,Thu-Sun 08:20 Washington Dulles (IAD) 09:50 Buffalo (BUF)
United Airlines UA 4236 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:30 Effective 2026-03-05 through 2026-03-28
Fri,Sat 08:25 Washington Dulles (IAD) 09:51 Buffalo (BUF)
United Airlines UA 4236 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:26 Valid until 2026-01-02
Daily 08:25 Washington Dulles (IAD) 09:47 Buffalo (BUF)
United Airlines UA 4236 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:22 Effective 2026-03-29 through 2026-04-29
Daily 08:25 Washington Dulles (IAD) 09:47 Buffalo (BUF)
United Airlines UA 4236 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:22 Effective from 2026-05-21
Daily 12:35 Washington Dulles (IAD) 13:46 Buffalo (BUF)
United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective from 2026-03-29
Daily 12:40 Washington Dulles (IAD) 14:14 Buffalo (BUF)
United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:34 Valid until 2026-02-11
Mon-Sat 12:40 Washington Dulles (IAD) 14:14 Buffalo (BUF)
United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:34 Effective 2026-03-05 through 2026-03-28
Daily 22:15 Washington Dulles (IAD) 23:42 Buffalo (BUF)
United Airlines UA 4353 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:27 Effective 2026-03-05 through 2026-03-28
Daily 22:15 Washington Dulles (IAD) 23:26 Buffalo (BUF)
United Airlines UA 4353 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective 2026-03-29 through 2026-04-29
Daily 22:15 Washington Dulles (IAD) 23:26 Buffalo (BUF)
United Airlines UA 4353 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective 2026-05-21 through 2026-10-24
Daily 17:35 Washington Dulles (IAD) 19:06 Buffalo (BUF)
United Airlines UA 4383 Non-stop Canadair CRJ 550 (CR5) 1:31 Effective 2026-02-12 through 2026-03-04
Mon-Fri,Sun 12:40 Washington Dulles (IAD) 14:13 Buffalo (BUF)
United Airlines UA 4455 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-12 through 2026-03-04
Daily 17:10 Washington Dulles (IAD) 18:42 Buffalo (BUF)
United Airlines UA 4823 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:32 Effective 2026-03-05 through 2026-03-28
Daily 17:10 Washington Dulles (IAD) 18:21 Buffalo (BUF)
United Airlines UA 4823 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective from 2026-03-29
Daily 17:30 Washington Dulles (IAD) 19:06 Buffalo (BUF)
United Airlines UA 4823 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:36 Valid until 2026-01-05
Daily 17:48 Washington Dulles (IAD) 19:25 Buffalo (BUF)
United Airlines UA 4823 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:37 Effective 2026-01-06 through 2026-02-10
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United Airlines flights from Washington Dulles (IAD) to Buffalo (BUF).
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA3405
22:18
Washington Dulles (IAD)

23:48
Buffalo (BUF)
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3585
08:20
Washington Dulles (IAD)

09:46
Buffalo (BUF)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3585
08:20
Washington Dulles (IAD)

09:46
Buffalo (BUF)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:26, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
United Airlines UA3682
22:18
Washington Dulles (IAD)

23:44
Buffalo (BUF)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:26, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4012
08:25
Washington Dulles (IAD)

09:47
Buffalo (BUF)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:22, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4060
22:15
Washington Dulles (IAD)

23:26
Buffalo (BUF)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:11, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4236
08:20
Washington Dulles (IAD)

09:46
Buffalo (BUF)
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:26, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4236
08:20
Washington Dulles (IAD)

09:50
Buffalo (BUF)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:30, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4236
08:25
Washington Dulles (IAD)

09:51
Buffalo (BUF)
Valid until 2026-01-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 1:26, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4236
08:25
Washington Dulles (IAD)

09:47
Buffalo (BUF)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:22, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4236
08:25
Washington Dulles (IAD)

09:47
Buffalo (BUF)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:22, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4335
12:35
Washington Dulles (IAD)

13:46
Buffalo (BUF)
Effective from 2026-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4335
12:40
Washington Dulles (IAD)

14:14
Buffalo (BUF)
Valid until 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:34, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4335
12:40
Washington Dulles (IAD)

14:14
Buffalo (BUF)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 1:34, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4353
22:15
Washington Dulles (IAD)

23:42
Buffalo (BUF)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:27, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4353
22:15
Washington Dulles (IAD)

23:26
Buffalo (BUF)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4353
22:15
Washington Dulles (IAD)

23:26
Buffalo (BUF)
Effective 2026-05-21 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4383
17:35
Washington Dulles (IAD)

19:06
Buffalo (BUF)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4455
12:40
Washington Dulles (IAD)

14:13
Buffalo (BUF)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4823
17:10
Washington Dulles (IAD)

18:42
Buffalo (BUF)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:32, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4823
17:10
Washington Dulles (IAD)

18:21
Buffalo (BUF)
Effective from 2026-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4823
17:30
Washington Dulles (IAD)

19:06
Buffalo (BUF)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:36, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4823
17:48
Washington Dulles (IAD)

19:25
Buffalo (BUF)
Effective 2026-01-06 through 2026-02-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:37, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
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  • A domestic route departing from the Washington Dulles airport (IAD) and arriving at Buffalo airport (BUF).
  • The flight distance is 283 miles, or 456 km.
  • The timezone of both the departure and the arrival airports is UTC-5 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 1:11 and 1:37.
All IAD-BUF flights
All United Airlines flights
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