All airlines flying from Dulles, Washington (IAD) to Buffalo (BUF).

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FLIGHT SCHEDULE
Direct Flights:
Mon,Wed-Fri,Sun 17:25 Dulles, Washington (IAD) 18:51 Buffalo (BUF) United Airlines UA 3558 Non-stop Embraer EMB 175 (E7W) 1:26 Valid until 2025-05-21
Tue 17:25 Dulles, Washington (IAD) 18:51 Buffalo (BUF) United Airlines UA 3558 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:26 Effective 2025-05-06 through 2025-05-20
Sat 17:25 Dulles, Washington (IAD) 18:51 Buffalo (BUF) United Airlines UA 3564 Non-stop Embraer EMB 175 (E7W) 1:26 Effective 2025-05-03 through 2025-05-17
Mon,Wed-Sun 22:15 Dulles, Washington (IAD) 23:36 Buffalo (BUF) United Airlines UA 3680 Non-stop Embraer EMB 175 (E7W) 1:21 Valid until 2025-05-21
Tue 22:15 Dulles, Washington (IAD) 23:36 Buffalo (BUF) United Airlines UA 3680 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:21 Effective 2025-05-06 through 2025-05-20
Fri 17:25 Dulles, Washington (IAD) 18:55 Buffalo (BUF) United Airlines UA 4182 Non-stop Canadair CRJ 550 (CR5) 1:30 Operates only on 2025-07-04
Daily 22:20 Dulles, Washington (IAD) 23:44 Buffalo (BUF) United Airlines UA 4183 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2025-08-01 through 2025-08-18
Daily 22:20 Dulles, Washington (IAD) 23:44 Buffalo (BUF) United Airlines UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2025-06-26 through 2025-07-03
Daily 22:20 Dulles, Washington (IAD) 23:44 Buffalo (BUF) United Airlines UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2025-07-05 through 2025-07-31
Daily 08:20 Dulles, Washington (IAD) 09:23 Buffalo (BUF) United Airlines UA 4236 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:03 Effective 2025-10-26 through 2026-01-05
Daily 08:25 Dulles, Washington (IAD) 09:46 Buffalo (BUF) United Airlines UA 4236 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-09-25 through 2025-10-25
Wed,Sat,Sun 08:25 Dulles, Washington (IAD) 09:46 Buffalo (BUF) United Airlines UA 4298 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-06-28 through 2025-07-30
Sat 08:25 Dulles, Washington (IAD) 09:46 Buffalo (BUF) United Airlines UA 4322 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-05-03 through 2025-05-17
Wed,Sat,Sun 08:25 Dulles, Washington (IAD) 09:46 Buffalo (BUF) United Airlines UA 4331 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-08-02 through 2025-08-17
Daily 12:35 Dulles, Washington (IAD) 13:46 Buffalo (BUF) United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective 2025-08-19 through 2025-09-24
Daily 12:35 Dulles, Washington (IAD) 13:46 Buffalo (BUF) United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective from 2025-10-26
Daily 12:40 Dulles, Washington (IAD) 14:00 Buffalo (BUF) United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:20 Valid until 2025-05-21
Daily 12:45 Dulles, Washington (IAD) 14:09 Buffalo (BUF) United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:24 Effective 2025-05-22 through 2025-06-25
Daily 12:45 Dulles, Washington (IAD) 14:11 Buffalo (BUF) United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:26 Effective 2025-09-25 through 2025-10-25
Daily 12:48 Dulles, Washington (IAD) 14:12 Buffalo (BUF) United Airlines UA 4335 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:24 Effective 2025-06-26 through 2025-08-18
Daily 22:15 Dulles, Washington (IAD) 23:26 Buffalo (BUF) United Airlines UA 4353 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective 2025-08-19 through 2025-09-24
Daily 22:15 Dulles, Washington (IAD) 23:26 Buffalo (BUF) United Airlines UA 4353 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective 2025-10-26 through 2025-12-01
Daily 22:15 Dulles, Washington (IAD) 23:26 Buffalo (BUF) United Airlines UA 4353 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective from 2025-12-17
Mon,Thu-Sun 22:21 Dulles, Washington (IAD) 23:46 Buffalo (BUF) United Airlines UA 4353 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:25 Effective 2025-05-22 through 2025-06-23
Tue,Wed 22:20 Dulles, Washington (IAD) 23:44 Buffalo (BUF) United Airlines UA 4390 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2025-05-27 through 2025-05-28
Tue,Wed 22:20 Dulles, Washington (IAD) 23:44 Buffalo (BUF) United Airlines UA 4393 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2025-06-03 through 2025-06-24
Daily 17:25 Dulles, Washington (IAD) 18:46 Buffalo (BUF) United Airlines UA 4456 Non-stop Canadair CRJ 550 (CR5) 1:21 Effective 2025-09-25 through 2025-10-25
Daily 17:10 Dulles, Washington (IAD) 18:21 Buffalo (BUF) United Airlines UA 4823 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective from 2025-10-26
Daily 17:25 Dulles, Washington (IAD) 18:56 Buffalo (BUF) United Airlines UA 4823 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:31 Effective 2025-05-22 through 2025-07-03
Daily 17:25 Dulles, Washington (IAD) 18:56 Buffalo (BUF) United Airlines UA 4823 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:31 Effective 2025-07-05 through 2025-08-18
Daily 17:10 Dulles, Washington (IAD) 18:21 Buffalo (BUF) United Airlines UA 6101 Non-stop Embraer EMB 175 (E7W) 1:11 Effective 2025-08-19 through 2025-09-24
Daily 08:20 Dulles, Washington (IAD) 09:23 Buffalo (BUF) United Airlines UA 6261 Non-stop Embraer EMB 175 (E7W) 1:03 Effective 2025-08-19 through 2025-09-24
Mon-Fri,Sun 08:25 Dulles, Washington (IAD) 09:45 Buffalo (BUF) United Airlines UA 6261 Non-stop Embraer EMB 175 (E7W) 1:20 Valid until 2025-05-21
Mon,Tue,Thu,Fri 08:25 Dulles, Washington (IAD) 09:43 Buffalo (BUF) United Airlines UA 6261 Non-stop Embraer EMB 175 (E7W) 1:18 Effective 2025-05-22 through 2025-06-24
Sun 08:25 Dulles, Washington (IAD) 09:43 Buffalo (BUF) United Airlines UA 6261 Non-stop Embraer EMB 175 (E7W) 1:18 Effective 2025-06-01 through 2025-06-22
Mon,Tue,Thu,Fri 08:25 Dulles, Washington (IAD) 09:45 Buffalo (BUF) United Airlines UA 6261 Non-stop Embraer EMB 175 (E7W) 1:20 Effective 2025-06-26 through 2025-08-18
Direct Codeshare Flights:
Daily 08:20 Dulles, Washington (IAD) 09:23 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer EMB 175 (E7W) 1:03 Effective 2025-08-19 through 2025-09-08 Codeshare flight, operated by United Airlines.(UA 6261)
Mon,Wed-Sun 08:20 Dulles, Washington (IAD) 09:23 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer EMB 175 (E7W) 1:03 Effective 2025-09-10 through 2025-09-24 Codeshare flight, operated by United Airlines.(UA 6261)
Daily 08:20 Dulles, Washington (IAD) 09:23 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:03 Effective 2025-10-26 through 2026-01-05 Codeshare flight, operated by United Airlines.(UA 4236)
Mon-Fri,Sun 08:25 Dulles, Washington (IAD) 09:45 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer EMB 175 (E7W) 1:20 Valid until 2025-05-21 Codeshare flight, operated by United Airlines.(UA 6261)
Sat 08:25 Dulles, Washington (IAD) 09:46 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-05-03 through 2025-05-17 Codeshare flight, operated by United Airlines.(UA 4322)
Mon,Tue,Thu,Fri 08:25 Dulles, Washington (IAD) 09:43 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer EMB 175 (E7W) 1:18 Effective 2025-05-22 through 2025-05-30 Codeshare flight, operated by United Airlines.(UA 6261)
Mon,Tue,Thu,Fri,Sun 08:25 Dulles, Washington (IAD) 09:43 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer EMB 175 (E7W) 1:18 Effective 2025-06-01 through 2025-06-24 Codeshare flight, operated by United Airlines.(UA 6261)
Mon,Tue,Thu,Fri 08:25 Dulles, Washington (IAD) 09:45 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer EMB 175 (E7W) 1:20 Effective 2025-06-26 through 2025-08-18 Codeshare flight, operated by United Airlines.(UA 6261)
Wed,Sat,Sun 08:25 Dulles, Washington (IAD) 09:46 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-06-28 through 2025-08-17 Codeshare flight, operated by United Airlines.(UA 4322)
Mon,Wed-Sun 08:25 Dulles, Washington (IAD) 09:46 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-09-25 through 2025-10-06 Codeshare flight, operated by United Airlines.(UA 4322)
Daily 08:25 Dulles, Washington (IAD) 09:46 Buffalo (BUF) Copa Airlines CM 1239 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-10-07 through 2025-10-25 Codeshare flight, operated by United Airlines.(UA 4322)
Daily 17:10 Dulles, Washington (IAD) 18:21 Buffalo (BUF) Avianca AV 2042 Non-stop Embraer EMB 175 (E7W) 1:11 Effective 2025-08-19 through 2025-09-24 Codeshare flight, operated by United Airlines.(UA 6101)
Daily 17:10 Dulles, Washington (IAD) 18:21 Buffalo (BUF) Avianca AV 2042 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective from 2025-10-26 Codeshare flight, operated by United Airlines.(UA 4823)
Mon,Wed-Sun 17:25 Dulles, Washington (IAD) 18:51 Buffalo (BUF) Avianca AV 2042 Non-stop Embraer EMB 175 (E7W) 1:26 Valid until 2025-05-21 Codeshare flight, operated by United Airlines.(UA 3558)

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Parallax here IAD-BUF

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A domestic route departing from the Dulles, Washington 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 1:03 and 1:31.

Return (BUF-IAD) flights

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All airlines flying from Dulles, Washington (IAD) to Buffalo (BUF).

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FLIGHT SCHEDULE

Direct Flights:

United Airlines UA3558

17:25

Dulles, Washington (IAD)

18:51

Buffalo (BUF)

Valid until 2025-05-21

Mon

Tue
-

Wed

Thu

Fri

Sat
-

Sun

Duration: 1:26, non-stop
Embraer EMB 175 (E7W)

United Airlines UA3558

17:25

Dulles, Washington (IAD)

18:51

Buffalo (BUF)

Effective 2025-05-06 through 2025-05-20

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:26, non-stop
Embraer EMB 170 / EMB 175 (E70)

United Airlines UA3564

17:25

Dulles, Washington (IAD)

18:51

Buffalo (BUF)

Effective 2025-05-03 through 2025-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:26, non-stop
Embraer EMB 175 (E7W)

United Airlines UA3680

22:15

Dulles, Washington (IAD)

23:36

Buffalo (BUF)

Valid until 2025-05-21

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Duration: 1:21, non-stop
Embraer EMB 175 (E7W)

United Airlines UA3680

22:15

Dulles, Washington (IAD)

23:36

Buffalo (BUF)

Effective 2025-05-06 through 2025-05-20

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:21, non-stop
Embraer EMB 170 / EMB 175 (E70)

United Airlines UA4182

17:25

Dulles, Washington (IAD)

18:55

Buffalo (BUF)

Operates only on 2025-07-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 1:30, non-stop
Canadair CRJ 550 (CR5)

United Airlines UA4183

22:20

Dulles, Washington (IAD)

23:44

Buffalo (BUF)

Effective 2025-08-01 through 2025-08-18

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)

United Airlines UA4188

22:20

Dulles, Washington (IAD)

23:44

Buffalo (BUF)

Effective 2025-06-26 through 2025-07-03

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)

United Airlines UA4188

22:20

Dulles, Washington (IAD)

23:44

Buffalo (BUF)

Effective 2025-07-05 through 2025-07-31

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)

United Airlines UA4236

08:20

Dulles, Washington (IAD)

09:23

Buffalo (BUF)

Effective 2025-10-26 through 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:03, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4236

08:25

Dulles, Washington (IAD)

09:46

Buffalo (BUF)

Effective 2025-09-25 through 2025-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4298

08:25

Dulles, Washington (IAD)

09:46

Buffalo (BUF)

Effective 2025-06-28 through 2025-07-30

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat

Sun

Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4322

08:25

Dulles, Washington (IAD)

09:46

Buffalo (BUF)

Effective 2025-05-03 through 2025-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4331

08:25

Dulles, Washington (IAD)

09:46

Buffalo (BUF)

Effective 2025-08-02 through 2025-08-17

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat

Sun

Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4335

12:35

Dulles, Washington (IAD)

13:46

Buffalo (BUF)

Effective 2025-08-19 through 2025-09-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4335

12:35

Dulles, Washington (IAD)

13:46

Buffalo (BUF)

Effective from 2025-10-26

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4335

12:40

Dulles, Washington (IAD)

14:00

Buffalo (BUF)

Valid until 2025-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:20, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4335

12:45

Dulles, Washington (IAD)

14:09

Buffalo (BUF)

Effective 2025-05-22 through 2025-06-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:24, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4335

12:45

Dulles, Washington (IAD)

14:11

Buffalo (BUF)

Effective 2025-09-25 through 2025-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:26, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4335

12:48

Dulles, Washington (IAD)

14:12

Buffalo (BUF)

Effective 2025-06-26 through 2025-08-18

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:24, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4353

22:15

Dulles, Washington (IAD)

23:26

Buffalo (BUF)

Effective 2025-08-19 through 2025-09-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4353

22:15

Dulles, Washington (IAD)

23:26

Buffalo (BUF)

Effective 2025-10-26 through 2025-12-01

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4353

22:15

Dulles, Washington (IAD)

23:26

Buffalo (BUF)

Effective from 2025-12-17

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4353

22:21

Dulles, Washington (IAD)

23:46

Buffalo (BUF)

Effective 2025-05-22 through 2025-06-23

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 1:25, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4390

22:20

Dulles, Washington (IAD)

23:44

Buffalo (BUF)

Effective 2025-05-27 through 2025-05-28

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)

United Airlines UA4393

22:20

Dulles, Washington (IAD)

23:44

Buffalo (BUF)

Effective 2025-06-03 through 2025-06-24

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)

United Airlines UA4456

17:25

Dulles, Washington (IAD)

18:46

Buffalo (BUF)

Effective 2025-09-25 through 2025-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:21, non-stop
Canadair CRJ 550 (CR5)

United Airlines UA4823

17:10

Dulles, Washington (IAD)

18:21

Buffalo (BUF)

Effective from 2025-10-26

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4823

17:25

Dulles, Washington (IAD)

18:56

Buffalo (BUF)

Effective 2025-05-22 through 2025-07-03

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:31, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA4823

17:25

Dulles, Washington (IAD)

18:56

Buffalo (BUF)

Effective 2025-07-05 through 2025-08-18

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:31, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

United Airlines UA6101

17:10

Dulles, Washington (IAD)

18:21

Buffalo (BUF)

Effective 2025-08-19 through 2025-09-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:11, non-stop
Embraer EMB 175 (E7W)

United Airlines UA6261

08:20

Dulles, Washington (IAD)

09:23

Buffalo (BUF)

Effective 2025-08-19 through 2025-09-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:03, non-stop
Embraer EMB 175 (E7W)

United Airlines UA6261

08:25

Dulles, Washington (IAD)

09:45

Buffalo (BUF)

Valid until 2025-05-21

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 1:20, non-stop
Embraer EMB 175 (E7W)

United Airlines UA6261

08:25

Dulles, Washington (IAD)

09:43

Buffalo (BUF)

Effective 2025-05-22 through 2025-06-24

Mon

Tue

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:18, non-stop
Embraer EMB 175 (E7W)

United Airlines UA6261

08:25

Dulles, Washington (IAD)

09:43

Buffalo (BUF)

Effective 2025-06-01 through 2025-06-22

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:18, non-stop
Embraer EMB 175 (E7W)

United Airlines UA6261

08:25

Dulles, Washington (IAD)

09:45

Buffalo (BUF)

Effective 2025-06-26 through 2025-08-18

Mon

Tue

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:20, non-stop
Embraer EMB 175 (E7W)

Direct Codeshare Flights:

Copa Airlines CM1239

08:20

Dulles, Washington (IAD)

09:23

Buffalo (BUF)

Effective 2025-08-19 through 2025-09-08

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 6261)

Duration: 1:03, non-stop
Embraer EMB 175 (E7W)

Copa Airlines CM1239

08:20

Dulles, Washington (IAD)

09:23

Buffalo (BUF)

Effective 2025-09-10 through 2025-09-24

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 6261)

Duration: 1:03, non-stop
Embraer EMB 175 (E7W)

Copa Airlines CM1239

08:20

Dulles, Washington (IAD)

09:23

Buffalo (BUF)

Effective 2025-10-26 through 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 4236)

Duration: 1:03, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Copa Airlines CM1239

08:25

Dulles, Washington (IAD)

09:45

Buffalo (BUF)

Valid until 2025-05-21

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by United Airlines. (UA 6261)

Duration: 1:20, non-stop
Embraer EMB 175 (E7W)

Copa Airlines CM1239

08:25

Dulles, Washington (IAD)

09:46

Buffalo (BUF)

Effective 2025-05-03 through 2025-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 4322)

Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Copa Airlines CM1239

08:25

Dulles, Washington (IAD)

09:43

Buffalo (BUF)

Effective 2025-05-22 through 2025-05-30

Mon

Tue

Wed
-

Thu

Fri

Sat
-

Sun
-

Codeshare flight, operated by United Airlines. (UA 6261)

Duration: 1:18, non-stop
Embraer EMB 175 (E7W)

Copa Airlines CM1239

08:25

Dulles, Washington (IAD)

09:43

Buffalo (BUF)

Effective 2025-06-01 through 2025-06-24

Mon

Tue

Wed
-

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by United Airlines. (UA 6261)

Duration: 1:18, non-stop
Embraer EMB 175 (E7W)

Copa Airlines CM1239

08:25

Dulles, Washington (IAD)

09:45

Buffalo (BUF)

Effective 2025-06-26 through 2025-08-18

Mon

Tue

Wed
-

Thu

Fri

Sat
-

Sun
-

Codeshare flight, operated by United Airlines. (UA 6261)

Duration: 1:20, non-stop
Embraer EMB 175 (E7W)

Copa Airlines CM1239

08:25

Dulles, Washington (IAD)

09:46

Buffalo (BUF)

Effective 2025-06-28 through 2025-08-17

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 4322)

Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Copa Airlines CM1239

08:25

Dulles, Washington (IAD)

09:46

Buffalo (BUF)

Effective 2025-09-25 through 2025-10-06

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 4322)

Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Copa Airlines CM1239

08:25

Dulles, Washington (IAD)

09:46

Buffalo (BUF)

Effective 2025-10-07 through 2025-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 4322)

Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Avianca AV2042

17:10

Dulles, Washington (IAD)

18:21

Buffalo (BUF)

Effective 2025-08-19 through 2025-09-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 6101)

Duration: 1:11, non-stop
Embraer EMB 175 (E7W)

Avianca AV2042

17:10

Dulles, Washington (IAD)

18:21

Buffalo (BUF)

Effective from 2025-10-26

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 4823)

Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Avianca AV2042

17:25

Dulles, Washington (IAD)

18:51

Buffalo (BUF)

Valid until 2025-05-21

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 3558)

Duration: 1:26, non-stop
Embraer EMB 175 (E7W)

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A domestic route departing from the Dulles, Washington 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 1:03 and 1:31.

Return (BUF-IAD) flights

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