Avianca flights from Buffalo (BUF) to Dulles, Washington (IAD).

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Sat,Sun 06:15 Buffalo (BUF) 07:31 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:16 Effective 2025-05-24 through 2025-05-31
Codeshare flight, operated by United Airlines.(UA 4298)
Wed 06:15 Buffalo (BUF) 07:29 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Canadair CRJ 550 (CR5) 1:14 Effective 2025-05-28 through 2025-06-25
Codeshare flight, operated by United Airlines.(UA 4451)
Sat 06:15 Buffalo (BUF) 07:31 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:16 Effective 2025-06-07 through 2025-06-21
Codeshare flight, operated by United Airlines.(UA 4298)
Daily 10:20 Buffalo (BUF) 11:41 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer EMB 175 (E7W) 1:21 Effective 2025-08-19 through 2025-09-24
Codeshare flight, operated by United Airlines.(UA 6178)
Daily 10:20 Buffalo (BUF) 11:41 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective from 2025-10-26
Codeshare flight, operated by United Airlines.(UA 4935)
Mon,Tue,Thu,Fri 10:28 Buffalo (BUF) 11:44 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer EMB 175 (E7W) 1:16 Effective 2025-05-22 through 2025-06-24
Codeshare flight, operated by United Airlines.(UA 6178)
Sun 10:28 Buffalo (BUF) 11:44 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer EMB 175 (E7W) 1:16 Effective 2025-06-01 through 2025-06-22
Codeshare flight, operated by United Airlines.(UA 6178)
Mon-Fri,Sun 10:30 Buffalo (BUF) 11:46 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer EMB 175 (E7W) 1:16 Valid until 2025-05-21
Codeshare flight, operated by United Airlines.(UA 6155)
Sat 10:30 Buffalo (BUF) 11:48 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:18 Effective 2025-05-03 through 2025-05-17
Codeshare flight, operated by United Airlines.(UA 4274)
Mon,Tue,Thu,Fri 10:30 Buffalo (BUF) 11:46 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer EMB 175 (E7W) 1:16 Effective 2025-06-26 through 2025-08-18
Codeshare flight, operated by United Airlines.(UA 6155)
Wed,Sat,Sun 10:30 Buffalo (BUF) 11:47 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:17 Effective 2025-06-28 through 2025-08-17
Codeshare flight, operated by United Airlines.(UA 4242)
Daily 10:30 Buffalo (BUF) 11:46 Dulles, Washington (IAD)
Avianca AV 2043 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:16 Effective 2025-09-25 through 2025-10-25
Codeshare flight, operated by United Airlines.(UA 4935)
Fri 06:00 Buffalo (BUF) 07:14 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Canadair CRJ 550 (CR5) 1:14 Operates only on 2025-07-04
Codeshare flight, operated by United Airlines.(UA 4169)
Daily 06:00 Buffalo (BUF) 07:19 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:19 Effective from 2026-02-12
Codeshare flight, operated by United Airlines.(UA 4298)
Daily 19:30 Buffalo (BUF) 20:41 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Embraer EMB 175 (E7W) 1:11 Effective 2025-08-19 through 2025-09-24
Codeshare flight, operated by United Airlines.(UA 6048)
Daily 19:30 Buffalo (BUF) 20:41 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:11 Effective 2025-10-26 through 2026-02-11
Codeshare flight, operated by United Airlines.(UA 4270)
Daily 19:45 Buffalo (BUF) 21:06 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-06-26 through 2025-07-03
Codeshare flight, operated by United Airlines.(UA 4270)
Daily 19:45 Buffalo (BUF) 21:06 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-07-05 through 2025-08-18
Codeshare flight, operated by United Airlines.(UA 4270)
Daily 19:51 Buffalo (BUF) 21:10 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Canadair CRJ 550 (CR5) 1:19 Effective 2025-09-25 through 2025-10-25
Codeshare flight, operated by United Airlines.(UA 4172)
Mon,Wed-Sun 19:55 Buffalo (BUF) 21:14 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Embraer EMB 175 (E7W) 1:19 Valid until 2025-05-21
Codeshare flight, operated by United Airlines.(UA 3531)
Tue 19:55 Buffalo (BUF) 21:14 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:19 Effective 2025-05-06 through 2025-05-20
Codeshare flight, operated by United Airlines.(UA 3531)
Daily 19:55 Buffalo (BUF) 21:16 Dulles, Washington (IAD)
Avianca AV 2044 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:21 Effective 2025-05-22 through 2025-06-25
Codeshare flight, operated by United Airlines.(UA 4270)
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Avianca flights from Buffalo (BUF) to Dulles, Washington (IAD).
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Avianca AV2043
06:15
Buffalo (BUF)

07:31
Dulles, Washington (IAD)
Effective 2025-05-24 through 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4298)
Duration: 1:16, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2043
06:15
Buffalo (BUF)

07:29
Dulles, Washington (IAD)
Effective 2025-05-28 through 2025-06-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4451)
Duration: 1:14, non-stop
Canadair CRJ 550 (CR5)
Avianca AV2043
06:15
Buffalo (BUF)

07:31
Dulles, Washington (IAD)
Effective 2025-06-07 through 2025-06-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 4298)
Duration: 1:16, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2043
10:20
Buffalo (BUF)

11:41
Dulles, Washington (IAD)
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 6178)
Duration: 1:21, non-stop
Embraer EMB 175 (E7W)
Avianca AV2043
10:20
Buffalo (BUF)

11:41
Dulles, Washington (IAD)
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4935)
Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2043
10:28
Buffalo (BUF)

11:44
Dulles, Washington (IAD)
Effective 2025-05-22 through 2025-06-24
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 6178)
Duration: 1:16, non-stop
Embraer EMB 175 (E7W)
Avianca AV2043
10:28
Buffalo (BUF)

11:44
Dulles, Washington (IAD)
Effective 2025-06-01 through 2025-06-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 6178)
Duration: 1:16, non-stop
Embraer EMB 175 (E7W)
Avianca AV2043
10:30
Buffalo (BUF)

11:46
Dulles, Washington (IAD)
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 6155)
Duration: 1:16, non-stop
Embraer EMB 175 (E7W)
Avianca AV2043
10:30
Buffalo (BUF)

11:48
Dulles, Washington (IAD)
Effective 2025-05-03 through 2025-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 4274)
Duration: 1:18, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2043
10:30
Buffalo (BUF)

11:46
Dulles, Washington (IAD)
Effective 2025-06-26 through 2025-08-18
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 6155)
Duration: 1:16, non-stop
Embraer EMB 175 (E7W)
Avianca AV2043
10:30
Buffalo (BUF)

11:47
Dulles, Washington (IAD)
Effective 2025-06-28 through 2025-08-17
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4242)
Duration: 1:17, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2043
10:30
Buffalo (BUF)

11:46
Dulles, Washington (IAD)
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4935)
Duration: 1:16, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2044
06:00
Buffalo (BUF)

07:14
Dulles, Washington (IAD)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 4169)
Duration: 1:14, non-stop
Canadair CRJ 550 (CR5)
Avianca AV2044
06:00
Buffalo (BUF)

07:19
Dulles, Washington (IAD)
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4298)
Duration: 1:19, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2044
19:30
Buffalo (BUF)

20:41
Dulles, Washington (IAD)
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 6048)
Duration: 1:11, non-stop
Embraer EMB 175 (E7W)
Avianca AV2044
19:30
Buffalo (BUF)

20:41
Dulles, Washington (IAD)
Effective 2025-10-26 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4270)
Duration: 1:11, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2044
19:45
Buffalo (BUF)

21:06
Dulles, Washington (IAD)
Effective 2025-06-26 through 2025-07-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4270)
Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2044
19:45
Buffalo (BUF)

21:06
Dulles, Washington (IAD)
Effective 2025-07-05 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4270)
Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Avianca AV2044
19:51
Buffalo (BUF)

21:10
Dulles, Washington (IAD)
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4172)
Duration: 1:19, non-stop
Canadair CRJ 550 (CR5)
Avianca AV2044
19:55
Buffalo (BUF)

21:14
Dulles, Washington (IAD)
Valid until 2025-05-21
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 3531)
Duration: 1:19, non-stop
Embraer EMB 175 (E7W)
Avianca AV2044
19:55
Buffalo (BUF)

21:14
Dulles, Washington (IAD)
Effective 2025-05-06 through 2025-05-20
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 3531)
Duration: 1:19, non-stop
Embraer EMB 170 / EMB 175 (E70)
Avianca AV2044
19:55
Buffalo (BUF)

21:16
Dulles, Washington (IAD)
Effective 2025-05-22 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 4270)
Duration: 1:21, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
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  • A domestic route departing from the Buffalo airport (BUF) and arriving at Dulles, Washington airport (IAD).
  • 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 1:21.
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