| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 18 | YUL | STL | 20:16 | 21:31 |
Delayed
|
Track > |
| Jul 17 | YUL | STL | 17:31 | 18:53 |
Landed
|
Track > |
| Jul 16 | YUL | STL | 17:49 | 19:08 |
Landed Late
|
Track > |
| Jul 15 | YUL | STL | 17:18 | 18:25 |
Landed
|
Track > |
| Jul 14 | YUL | STL | 17:30 | 18:37 |
Landed
|
Track > |
| Jul 13 | YUL | STL | 16:55 | 18:42 |
Cancelled
|
Track > |
| Claim > | ||||||
| Jul 12 | YUL | STL | 18:17 | 19:20 |
Landed Late
|
Track > |
| Jul 11 | YUL | STL | 16:55 | 18:42 |
Cancelled
|
Track > |
| Jul 10 | YUL | STL | 17:33 | 19:06 |
Landed Late
|
Track > |
| Jul 09 | YUL | STL | 18:25 | 19:43 |
Delayed
|
Track > |
United Airlines Flight UA6645 connects Montreal, Canada to St. Louis, United States, taking off from Montreal Pierre Elliott Trudeau Airport YUL and landing at St. Louis Lambert International Airport STL.
How long is the UA6645 flight from Montreal to St. Louis?
The average flight time from Montreal to St. Louis is 2 hours and 15 minutes. The flight distance is 1558 km / 968 miles and the average flight speed is 666 km/h / 414 mph.
How many UA6645 flights are operated per week?
6 flights per week. The flight UA6645 is operated on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday.
What is the On-Time Performance (OTP) of United Airlines Flight UA6645 Montreal to St. Louis?
The Airportia On-Time Performance Rating for United Airlines Flight UA6645 is 4.5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA6645 arriving at?
Flight UA6645 arrives at St. Louis Lambert International Airport (STL) Terminal 1.
When was the latest UA6645 flight?
The latest flight took off on Saturday, July 18th, 2026 with the flight status being En-Route on 21:31.
How else can the flight UA6645 be referenced as?
This United Airlines flight can also be referenced as UAL6645, UA 6645, UAL 6645.
How often is flight UA6645 delayed?
On average, 60% of all UA6645 flights are delayed. The average delay is 54 minutes.
Can I get compensation for my delayed or cancelled UA6645 flight or baggage issues?
If your UA6645 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA6645 Flight Tracker above for more details.
Claim compensation for your flight delay or cancellation!
Flight delays happen, but that doesn’t mean you have to accept them. You may be entitled to as much as 600€ in compensation if your flight has been delayed, cancelled or overbooked within the last three years. Claim Compensation Now >
Other flights departing from Montreal YUL: AC777, RV1741, AC8687, UA3549
Other flights arriving at St. Louis STL: AS647, WN1986, AC8687, WN493
All flights connecting Montreal YUL to St. Louis STL.
