Informational Guide to Macdonald-Cartier International Airport - Non Official

UA4455 United Airlines - Flight Status

Codeshare Flights
The flight AC4694 from Air Canada (AC) is a codeshare flight operated by United Airlines (UA) under the flight number UA4455. Check this page for details about flight UA4455.

Below, you can find details about United Airlines flight UA4455, which currently operates between the airports of Ottawa - Ottawa Macdonald-Cartier International Airport (Airport Code YOW) and Dulles - Washington Dulles International Airport (Airport Code IAD).
This flight data pertains specifically to the flight's details for Monday, December 08, 2025.

UA4455 On Time performance:
71
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

UA4455 United Airlines to Dulles

Scheduled - On-time
Flight Status for Monday December 08, 2025
This flight was also scheduled for Yesterday (December 07, 2025). See it here
This flight is also scheduled for Tomorrow (December 09, 2025). See it here

Airline information

United Airlines
United Airlines
Equipment: Canadair (Bombardier) Regional Jet 550

Departure

Ottawa (YOW)
December 08, 2025
Ottawa Macdonald-Cartier International Airport
Estimated Departure Time:
07:30 pm
Gate:
2
Scheduled Departure Time: 07:30 pm

Arrival

Dulles (IAD)
December 08, 2025
Washington Dulles International Airport
Estimated Arrival Time:
09:22 pm
Terminal:
-
Gate:
C28
Scheduled Arrival Time: 09:22 pm
Baggage: 3
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.ottawa-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:

- AC4694 - Air Canada

Additional Information

Which is the frequency of flight UA4455?
The flight UA4455 is scheduled to flight on daily basis.

Which is the distance of flight UA4455?
The distance between the two airports is 449 miles.

Which is the flight time of flight UA4455?
The scheduled flight time gate to gate is: 01:52 hours.
The real flight time gate to gate on average is: 01:42 hours.

Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.

Alternative Flights

The following airline serve the same route between Ottawa and Dulles:
United Airlines - Flight Number: UA3655. (On Time performance: 78 - Average Delay: 27 minutes)

Punctuality and delays

We have gathered data from recent months and present below an analysis of how timely the flights have been.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from September 06, 2025 to December 05, 2025, we have obtained these figures.
Total number of flights: 90
On Time: 64 ( 71 % )
Moderate Delay: 7 ( 8 % )
Significant Delay: 6 ( 7 % )
Major Delay: 11 ( 12 % )
Canceled: 0 ( 0 % )
Diverted: 2 ( 2 % )

Average Delay: 29 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from June 06, 2025 to December 05, 2025. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from December 02, 2024 to November 30, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Last Past Flights UA4455

Date
Departure
Arrival
Duration
Aircraft
Status
Sunday
07 December
08:11 pm
Ottawa (YOW)
10:24 pm
Dulles (IAD)
02h 13min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Saturday
06 December
10:02 pm
Ottawa (YOW)
11:50 pm
Dulles (IAD)
01h 48min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Friday
05 December
09:35 pm
Ottawa (YOW)
11:33 pm
Dulles (IAD)
01h 58min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Thursday
04 December
07:35 pm
Ottawa (YOW)
09:48 pm
Dulles (IAD)
02h 13min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Wednesday
03 December
07:26 pm
Ottawa (YOW)
09:31 pm
Dulles (IAD)
02h 05min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Tuesday
02 December
10:20 pm
Ottawa (YOW)
12:15 am
Dulles (IAD)
01h 55min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Monday
01 December
08:49 pm
Ottawa (YOW)
10:45 pm
Dulles (IAD)
01h 56min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Sunday
30 November
07:29 pm
Ottawa (YOW)
09:15 pm
Dulles (IAD)
01h 46min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Saturday
29 November
08:01 pm
Ottawa (YOW)
09:27 pm
Dulles (IAD)
01h 26min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Friday
28 November
12:43 am
()
02:30 am
Dulles (IAD)
Canadair (Bomb
Canadair (Bomb
Landed - DIVERTED