Air Canada
flight
AC 3791:
Washington Dulles - Luis Munoz Marin, San Juan
Washington Dulles - Luis Munoz Marin, San Juan
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC3791
Valid until 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:50, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-02-05 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:50, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:50, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air Canada AC3791
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:50, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-03-29 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 4:00, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-08-18 through 2026-08-31
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:55, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-08-22 through 2026-09-19
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:55, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-09-06 through 2026-09-20
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:55, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-09-24 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:55, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-05-21 through 2026-08-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:54, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC3791
Effective 2026-09-01 through 2026-09-23
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2021)
Duration: 3:54, non-stop Boeing 737 MAX 8 (7M8)
- AC 3791 is an international flight departing from Washington Dulles airport, United States (IAD) and arriving at Luis Munoz Marin, San Juan airport, Puerto Rico (SJU).
- The flight distance is 1574 miles, or 2532 km.
- The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-4 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
- For direct flights, the flight time varies between 3:50 and 4:00.