United Airlines
flight
UA 8431:
New York LaGuardia - Montreal-Trudeau
New York LaGuardia - Montreal-Trudeau
FLIGHT SCHEDULE
Direct Codeshare Flights:
United Airlines UA8431
Valid until 2026-01-05
Mon
Tue
Wed
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:27, non-stop Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-01-06 through 2026-01-09
Mon
-
-
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:27, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-01-12 through 2026-01-21
Mon
Tue
Wed
Thu
-
-
Fri
-
-
Sat
-
-
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:27, non-stop Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-01-15 through 2026-01-16
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:27, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-01-22 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:27, non-stop Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-03-29 through 2026-04-07
Mon
Tue
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:30, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
United Airlines UA8431
Operates only on 2026-04-01
Mon
-
-
Tue
-
-
Wed
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:28, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-04-08 through 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:30, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-05-01 through 2026-06-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:28, non-stop Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-06-18 through 2026-09-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:30, non-stop Canadair CRJ 900 (CR9)
Direct Codeshare Flights:
United Airlines UA8431
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:31, non-stop Embraer EMB 175 (E75)
Direct Codeshare Flights:
United Airlines UA8431
Effective 2026-09-08 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada.
(AC 8631)
Duration: 1:33, non-stop Embraer EMB 175 (E75)
- UA 8431 is an international flight departing from New York LaGuardia airport, United States (LGA) and arriving at Montreal-Trudeau airport, Canada (YUL).
- The flight distance is 324 miles, or 521 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 1:27 and 1:33.