Alaska Airlines flights from Ronald Reagan Washington (DCA) to Buffalo (BUF).

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 22:00 Ronald Reagan Washington (DCA) 2 23:24 Buffalo (BUF)
Alaska Airlines AS 4542 Non-stop Embraer EMB 175 (E75) 1:24 Effective 2025-02-13 through 2025-03-05
Codeshare flight, operated by American Airlines.(AA 4336)
Thu-Sat 22:00 Ronald Reagan Washington (DCA) 2 23:35 Buffalo (BUF)
Alaska Airlines AS 4542 Non-stop Embraer EMB 175 (E75) 1:35 Effective 2025-03-06 through 2025-03-08
Codeshare flight, operated by American Airlines.(AA 4336)
Daily 22:00 Ronald Reagan Washington (DCA) 2 23:28 Buffalo (BUF)
Alaska Airlines AS 4542 Non-stop Embraer EMB 175 (E75) 1:28 Effective 2025-04-04 through 2025-05-04
Codeshare flight, operated by American Airlines.(AA 4447)
Daily 22:00 Ronald Reagan Washington (DCA) 2 23:23 Buffalo (BUF)
Alaska Airlines AS 4542 Non-stop Embraer EMB 175 (E75) 1:23 Effective 2025-05-05 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 4336)
Sat 20:15 Ronald Reagan Washington (DCA) 2 21:53 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:38 Effective 2024-11-09 through 2024-11-16
Codeshare flight, operated by American Airlines.(AA 5243)
Sat 20:20 Ronald Reagan Washington (DCA) 2 21:45 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Embraer EMB 175 (E75) 1:25 Effective 2024-09-07 through 2024-10-05
Codeshare flight, operated by American Airlines.(AA 4344)
Sat 20:20 Ronald Reagan Washington (DCA) 2 21:46 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:26 Effective 2024-10-12 through 2024-11-02
Codeshare flight, operated by American Airlines.(AA 5241)
Thu,Fri 22:00 Ronald Reagan Washington (DCA) 2 23:30 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:30 Effective 2024-11-29 through 2024-12-06
Codeshare flight, operated by American Airlines.(AA 5243)
Daily 22:00 Ronald Reagan Washington (DCA) 2 23:30 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:30 Effective 2024-12-07 through 2024-12-18
Codeshare flight, operated by American Airlines.(AA 5243)
Daily 22:00 Ronald Reagan Washington (DCA) 2 23:23 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 900 (CR9) 1:23 Effective 2024-12-19 through 2025-01-06
Codeshare flight, operated by American Airlines.(AA 5243)
Daily 22:00 Ronald Reagan Washington (DCA) 2 23:29 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 900 (CR9) 1:29 Effective 2025-01-07 through 2025-02-12
Codeshare flight, operated by American Airlines.(AA 5243)
Daily 22:00 Ronald Reagan Washington (DCA) 2 23:35 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Embraer EMB 175 (E75) 1:35 Effective 2025-03-09 through 2025-04-03
Codeshare flight, operated by American Airlines.(AA 4336)
Daily 22:00 Ronald Reagan Washington (DCA) 2 23:21 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:21 Effective from 2025-06-05
Codeshare flight, operated by American Airlines.(AA 5241)
Mon-Fri,Sun 22:15 Ronald Reagan Washington (DCA) 2 23:46 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:31 Effective 2024-11-05 through 2024-11-22
Codeshare flight, operated by American Airlines.(AA 5243)
Mon-Wed,Sat,Sun 22:15 Ronald Reagan Washington (DCA) 2 23:46 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:31 Effective 2024-11-23 through 2024-12-04
Codeshare flight, operated by American Airlines.(AA 5243)
Mon-Fri,Sun 22:21 Ronald Reagan Washington (DCA) 2 23:44 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:23 Effective 2024-10-07 through 2024-10-30
Codeshare flight, operated by American Airlines.(AA 5241)
Mon,Fri,Sun 22:21 Ronald Reagan Washington (DCA) 2 23:44 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:23 Effective 2024-11-01 through 2024-11-04
Codeshare flight, operated by American Airlines.(AA 5241)
Mon-Fri,Sun 22:27 Ronald Reagan Washington (DCA) 2 23:44 Buffalo (BUF)
Alaska Airlines AS 6220 Non-stop Canadair CRJ 700 (CR7) 1:17 Effective 2024-09-04 through 2024-10-06
Codeshare flight, operated by American Airlines.(AA 5241)
Mon-Fri,Sun 22:26 Ronald Reagan Washington (DCA) 2 23:47 Buffalo (BUF)
Alaska Airlines AS 8181 Non-stop Canadair CRJ 700 (CR7) 1:21 Valid until 2024-09-03
Codeshare flight, operated by American Airlines.(AA 5241)




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Alaska Airlines flights from Ronald Reagan Washington (DCA) to Buffalo (BUF).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS4542
22:00
Ronald Reagan Washington (DCA) 2

23:24
Buffalo (BUF)
Effective 2025-02-13 through 2025-03-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4336)
Duration: 1:24, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4542
22:00
Ronald Reagan Washington (DCA) 2

23:35
Buffalo (BUF)
Effective 2025-03-06 through 2025-03-08
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 4336)
Duration: 1:35, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4542
22:00
Ronald Reagan Washington (DCA) 2

23:28
Buffalo (BUF)
Effective 2025-04-04 through 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4447)
Duration: 1:28, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS4542
22:00
Ronald Reagan Washington (DCA) 2

23:23
Buffalo (BUF)
Effective 2025-05-05 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4336)
Duration: 1:23, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS6220
20:15
Ronald Reagan Washington (DCA) 2

21:53
Buffalo (BUF)
Effective 2024-11-09 through 2024-11-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 5243)
Duration: 1:38, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
20:20
Ronald Reagan Washington (DCA) 2

21:45
Buffalo (BUF)
Effective 2024-09-07 through 2024-10-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 4344)
Duration: 1:25, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS6220
20:20
Ronald Reagan Washington (DCA) 2

21:46
Buffalo (BUF)
Effective 2024-10-12 through 2024-11-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 5241)
Duration: 1:26, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
22:00
Ronald Reagan Washington (DCA) 2

23:30
Buffalo (BUF)
Effective 2024-11-29 through 2024-12-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 5243)
Duration: 1:30, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
22:00
Ronald Reagan Washington (DCA) 2

23:30
Buffalo (BUF)
Effective 2024-12-07 through 2024-12-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5243)
Duration: 1:30, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
22:00
Ronald Reagan Washington (DCA) 2

23:23
Buffalo (BUF)
Effective 2024-12-19 through 2025-01-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5243)
Duration: 1:23, non-stop
Canadair CRJ 900 (CR9)
Alaska Airlines AS6220
22:00
Ronald Reagan Washington (DCA) 2

23:29
Buffalo (BUF)
Effective 2025-01-07 through 2025-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5243)
Duration: 1:29, non-stop
Canadair CRJ 900 (CR9)
Alaska Airlines AS6220
22:00
Ronald Reagan Washington (DCA) 2

23:35
Buffalo (BUF)
Effective 2025-03-09 through 2025-04-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 4336)
Duration: 1:35, non-stop
Embraer EMB 175 (E75)
Alaska Airlines AS6220
22:00
Ronald Reagan Washington (DCA) 2

23:21
Buffalo (BUF)
Effective from 2025-06-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5241)
Duration: 1:21, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
22:15
Ronald Reagan Washington (DCA) 2

23:46
Buffalo (BUF)
Effective 2024-11-05 through 2024-11-22
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 5243)
Duration: 1:31, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
22:15
Ronald Reagan Washington (DCA) 2

23:46
Buffalo (BUF)
Effective 2024-11-23 through 2024-12-04
Mon
Tue
Wed
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 5243)
Duration: 1:31, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
22:21
Ronald Reagan Washington (DCA) 2

23:44
Buffalo (BUF)
Effective 2024-10-07 through 2024-10-30
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 5241)
Duration: 1:23, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
22:21
Ronald Reagan Washington (DCA) 2

23:44
Buffalo (BUF)
Effective 2024-11-01 through 2024-11-04
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 5241)
Duration: 1:23, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS6220
22:27
Ronald Reagan Washington (DCA) 2

23:44
Buffalo (BUF)
Effective 2024-09-04 through 2024-10-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 5241)
Duration: 1:17, non-stop
Canadair CRJ 700 (CR7)
Alaska Airlines AS8181
22:26
Ronald Reagan Washington (DCA) 2

23:47
Buffalo (BUF)
Valid until 2024-09-03
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 5241)
Duration: 1:21, non-stop
Canadair CRJ 700 (CR7)
  • A domestic route departing from the Ronald Reagan Washington airport (DCA) and arriving at Buffalo airport (BUF).
  • The flight distance is 296 miles, or 476 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 1:17 and 1:38.
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