Copa Airlines
flight
CM 2148:
Buffalo - Washington Dulles
Buffalo - Washington Dulles
FLIGHT SCHEDULE
Direct Codeshare Flights:
Copa Airlines CM2148
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4270)
Duration: 1:28, non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Codeshare Flights:
Copa Airlines CM2148
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4270)
Duration: 1:19, non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Codeshare Flights:
Copa Airlines CM2148
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4270)
Duration: 1:32, non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Codeshare Flights:
Copa Airlines CM2148
Effective 2026-03-29 through 2026-04-07
Mon
Tue
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4270)
Duration: 1:19, non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Codeshare Flights:
Copa Airlines CM2148
Effective 2026-04-08 through 2026-04-15
Mon
Tue
Wed
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4270)
Duration: 1:19, non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Codeshare Flights:
Copa Airlines CM2148
Effective 2026-04-16 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4270)
Duration: 1:19, 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 Washington Dulles 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 1:19 and 1:32.