UA646 United Airlines - Flight Status
Codeshare Flights
The flight CM2819 from Copa Airlines (CM) is a codeshare flight operated by United Airlines (UA) under the flight number UA646. Check this page for details about flight UA646.
Below, you can find details about United Airlines flight UA646, which currently operates between the airports of Chicago - Chicago O'Hare International Airport (Airport Code ORD) and Montreal - Montreal-Trudeau International Airport (Airport Code YUL).
This flight data pertains specifically to the flight's details for Sunday, August 23, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA646
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA646
UA646 On Time performance:
64
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays Flight Status
UA646 United Airlines from Chicago
Scheduled - On-time
Flight Status for Sunday August 23, 2026
Scheduled - On-time
Flight Status for Sunday August 23, 2026
Airline information
United Airlines
Equipment: Boeing 737MAX 8 Passenger
Departure
Chicago (ORD)
August 23, 2026
Chicago O'Hare International Airport
Estimated Departure Time:
02:01 pm
Terminal:
2
Gate:
E10
Scheduled Departure Time: 02:01 pm
Arrival
Montreal (YUL)
August 23, 2026
Montreal-Trudeau International Airport
Estimated Arrival Time:
05:21 pm
Gate:
80
Scheduled Arrival Time: 05:30 pm
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.montreal-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.
Codeshare Flights
This flight is shared with other airlines, this means that these other flights are the same:
- AC3335 - Air Canada
- CM2819 - Copa Airlines
- EK6670 - Emirates
- NH7804 - ANA All Nippon Airways
- NZ9856 - Air New Zealand
Additional Information
Which is the frequency of flight UA646?
The flight UA646 is scheduled to flight on daily basis.
Which is the distance of flight UA646?
The distance between the two airports is 746 miles.
Which is the flight time of flight UA646?
The scheduled flight time gate to gate is: 02:29 hours.
The real flight time gate to gate on average is: 02:23 hours.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Chicago: 2026-08-23 12:45:13
Current Time in Montreal: 2026-08-23 13:45:13
The flight UA646 is scheduled to flight on daily basis.
Which is the distance of flight UA646?
The distance between the two airports is 746 miles.
Which is the flight time of flight UA646?
The scheduled flight time gate to gate is: 02:29 hours.
The real flight time gate to gate on average is: 02:23 hours.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Chicago: 2026-08-23 12:45:13
Current Time in Montreal: 2026-08-23 13:45:13
Alternative Flights
The following airlines serves the same route between Chicago and Montreal:
American Airlines
- Flight Number: AA3600. (On Time performance: 93 - Average Delay: 4 minutes)
- Flight Number: AA3602. (On Time performance: 73 - Average Delay: 22 minutes)
Air Canada
- Flight Number: AC520. (On Time performance: 37 - Average Delay: 54 minutes)
- Flight Number: AC8480. (On Time performance: 60 - Average Delay: 24 minutes)
- Flight Number: AC8484. (On Time performance: 57 - Average Delay: 28 minutes)
United Airlines
- Flight Number: UA1862. (On Time performance: 70 - Average Delay: 28 minutes)
- Flight Number: UA3521. (On Time performance: 73 - Average Delay: 48 minutes)
- Flight Number: UA3536. (On Time performance: 93 - Average Delay: 10 minutes)
- Flight Number: UA3670. (On Time performance: 62 - Average Delay: 25 minutes)
American Airlines
- Flight Number: AA3600. (On Time performance: 93 - Average Delay: 4 minutes)
- Flight Number: AA3602. (On Time performance: 73 - Average Delay: 22 minutes)
Air Canada
- Flight Number: AC520. (On Time performance: 37 - Average Delay: 54 minutes)
- Flight Number: AC8480. (On Time performance: 60 - Average Delay: 24 minutes)
- Flight Number: AC8484. (On Time performance: 57 - Average Delay: 28 minutes)
United Airlines
- Flight Number: UA1862. (On Time performance: 70 - Average Delay: 28 minutes)
- Flight Number: UA3521. (On Time performance: 73 - Average Delay: 48 minutes)
- Flight Number: UA3536. (On Time performance: 93 - Average Delay: 10 minutes)
- Flight Number: UA3670. (On Time performance: 62 - Average Delay: 25 minutes)
Punctuality and delays
We have gathered data from recent months and present below an analysis of how timely the flights have been.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from August 11, 2026 to August 21, 2026, we have obtained these figures.
Total number of flights: 11
On Time: 7 ( 64 % )
Moderate Delay: 1 ( 9 % )
Significant Delay: 1 ( 9 % )
Major Delay: 2 ( 18 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 23 minutes.
Total number of flights: 11
On Time: 7 ( 64 % )
Moderate Delay: 1 ( 9 % )
Significant Delay: 1 ( 9 % )
Major Delay: 2 ( 18 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 23 minutes.
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Last Past Flights UA646
Date
Departure
Arrival
Duration
Aircraft
Status
Saturday
22 August
22 August
01:59 pm
Chicago (ORD)
Chicago (ORD)
05:17 pm
Montreal (YUL)
Montreal (YUL)
02h 18min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Friday
21 August
21 August
01:55 pm
Chicago (ORD)
Chicago (ORD)
05:25 pm
Montreal (YUL)
Montreal (YUL)
02h 30min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
20 August
20 August
03:40 pm
Chicago (ORD)
Chicago (ORD)
06:54 pm
Montreal (YUL)
Montreal (YUL)
02h 14min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Wednesday
19 August
19 August
02:04 pm
Chicago (ORD)
Chicago (ORD)
05:10 pm
Montreal (YUL)
Montreal (YUL)
02h 06min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Tuesday
18 August
18 August
01:59 pm
Chicago (ORD)
Chicago (ORD)
05:13 pm
Montreal (YUL)
Montreal (YUL)
02h 14min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Monday
17 August
17 August
01:56 pm
Chicago (ORD)
Chicago (ORD)
05:08 pm
Montreal (YUL)
Montreal (YUL)
02h 12min
Boeing 737-800
Boeing 737-800
Landed - On-time
Sunday
16 August
16 August
03:03 pm
Chicago (ORD)
Chicago (ORD)
06:57 pm
Montreal (YUL)
Montreal (YUL)
02h 54min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Saturday
15 August
15 August
02:11 pm
Chicago (ORD)
Chicago (ORD)
05:36 pm
Montreal (YUL)
Montreal (YUL)
02h 25min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Friday
14 August
14 August
02:12 pm
Chicago (ORD)
Chicago (ORD)
05:38 pm
Montreal (YUL)
Montreal (YUL)
02h 26min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
13 August
13 August
02:09 pm
Chicago (ORD)
Chicago (ORD)
05:53 pm
Montreal (YUL)
Montreal (YUL)
02h 44min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed