Copa Airlines flight CM 2148: Buffalo - Dulles, Washington

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 19:30 Buffalo (BUF) 20:41 Dulles, Washington (IAD)
CM 2148 Non-stop Embraer EMB 175 (E7W) 1:11 Effective 2025-08-19 through 2025-09-03
Codeshare flight, operated by United Airlines.(UA 6048)
Mon-Wed,Fri,Sat 19:30 Buffalo (BUF) 20:41 Dulles, Washington (IAD)
CM 2148 Non-stop Embraer EMB 175 (E7W) 1:11 Effective 2025-09-05 through 2025-09-17
Codeshare flight, operated by United Airlines.(UA 6048)
Mon-Sat 19:30 Buffalo (BUF) 20:41 Dulles, Washington (IAD)
CM 2148 Non-stop Embraer EMB 175 (E7W) 1:11 Effective 2025-09-18 through 2025-09-24
Codeshare flight, operated by United Airlines.(UA 6048)
Daily 19:30 Buffalo (BUF) 20:41 Dulles, Washington (IAD)
CM 2148 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)
CM 2148 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)
CM 2148 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)
Mon-Sat 19:51 Buffalo (BUF) 21:10 Dulles, Washington (IAD)
CM 2148 Non-stop Canadair CRJ 550 (CR5) 1:19 Effective 2025-09-26 through 2025-10-04
Codeshare flight, operated by United Airlines.(UA 4172)
Daily 19:51 Buffalo (BUF) 21:10 Dulles, Washington (IAD)
CM 2148 Non-stop Canadair CRJ 550 (CR5) 1:19 Effective 2025-10-05 through 2025-10-25
Codeshare flight, operated by United Airlines.(UA 4172)
Mon,Wed-Sun 19:55 Buffalo (BUF) 21:14 Dulles, Washington (IAD)
CM 2148 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)
CM 2148 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)
CM 2148 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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Copa Airlines flight CM 2148:
Buffalo - Dulles, Washington
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Copa Airlines CM2148
19:30
Buffalo (BUF)

20:41
Dulles, Washington (IAD)
Effective 2025-08-19 through 2025-09-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 6048)
Duration: 1:11, non-stop
Embraer EMB 175 (E7W)
Copa Airlines CM2148
19:30
Buffalo (BUF)

20:41
Dulles, Washington (IAD)
Effective 2025-09-05 through 2025-09-17
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 6048)
Duration: 1:11, non-stop
Embraer EMB 175 (E7W)
Copa Airlines CM2148
19:30
Buffalo (BUF)

20:41
Dulles, Washington (IAD)
Effective 2025-09-18 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)
Copa Airlines CM2148
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)
Copa Airlines CM2148
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)
Copa Airlines CM2148
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)
Copa Airlines CM2148
19:51
Buffalo (BUF)

21:10
Dulles, Washington (IAD)
Effective 2025-09-26 through 2025-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 4172)
Duration: 1:19, non-stop
Canadair CRJ 550 (CR5)
Copa Airlines CM2148
19:51
Buffalo (BUF)

21:10
Dulles, Washington (IAD)
Effective 2025-10-05 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)
Copa Airlines CM2148
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)
Copa Airlines CM2148
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)
Copa Airlines CM2148
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)
  • CM 2148 is a domestic flight 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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