Informational Guide to Philadelphia Airport - PHL - NON OFFICIAL

UA4383 United Airlines - Flight Status

Codeshare Flights
The flight AC3634 from Air Canada (AC) is a codeshare flight operated by United Airlines (UA) under the flight number UA4383. Check this page for details about flight UA4383.

Below, you can find details about United Airlines flight UA4383, which currently operates between the airports of Philadelphia - Philadelphia International Airport (Airport Code PHL) and Dulles - Washington Dulles International Airport (Airport Code IAD).
This flight data pertains specifically to the flight's details for Sunday, February 01, 2026.

UA4383 On Time performance:
58
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

UA4383 United Airlines to Dulles

Scheduled - On-time
Flight Status for Sunday February 01, 2026

Airline information

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

Departure

Philadelphia (PHL)
February 01, 2026
Philadelphia International Airport
Estimated Departure Time:
07:45 pm
Terminal:
D
Gate:
D9
Scheduled Departure Time: 07:45 pm

Arrival

Dulles (IAD)
February 01, 2026
Washington Dulles International Airport
Estimated Arrival Time:
09:02 pm
Terminal:
-
Gate:
C28
Scheduled Arrival Time: 09:02 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.philadelphia-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:

- AC3634 - Air Canada

- AV2241 - Avianca

- CM2267 - Copa Airlines

Additional Information

Which is the frequency of flight UA4383?
The flight UA4383 is scheduled to flight on Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.

Which is the distance of flight UA4383?
The distance between the two airports is 134 miles.

Which is the flight time of flight UA4383?
The scheduled flight time gate to gate is: 01:17 hours.
The real flight time gate to gate on average is: 01:01 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 Philadelphia and Dulles:
United Airlines - Flight Number: UA4337.

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 January 06, 2026 to January 30, 2026, we have obtained these figures.
Total number of flights: 19
On Time: 11 ( 58 % )
Moderate Delay: 0 ( 0 % )
Significant Delay: 2 ( 11 % )
Major Delay: 5 ( 26 % )
Canceled: 0 ( 0 % )
Diverted: 1 ( 5 % )

Average Delay: 122 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from January 06, 2026 to January 30, 2026. 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.

Note: We have excluded some days from the graph, since the quantity and quality of the data is not representative enough.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from January 06, 2026 to January 30, 2026. 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 UA4383

Date
Departure
Arrival
Duration
Aircraft
Status
Friday
30 January
11:08 pm
Philadelphia (PHL)
12:07 am
Dulles (IAD)
00h 59min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Thursday
29 January
09:36 pm
Philadelphia (PHL)
10:48 pm
Dulles (IAD)
01h 12min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Wednesday
28 January
07:36 pm
Philadelphia (PHL)
08:50 pm
Dulles (IAD)
01h 14min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Tuesday
27 January
08:03 pm
Philadelphia (PHL)
09:10 pm
Dulles (IAD)
01h 07min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Sunday
25 January
07:45 pm
Philadelphia (PHL)
09:02 pm
Dulles (IAD)
01h 17min
Canadair (Bomb
Canadair (Bomb
Friday
23 January
08:42 pm
Philadelphia (PHL)
09:43 pm
Dulles (IAD)
01h 01min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Thursday
22 January
07:33 pm
Philadelphia (PHL)
08:36 pm
Dulles (IAD)
01h 03min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Wednesday
21 January
07:43 pm
Philadelphia (PHL)
08:44 pm
Dulles (IAD)
01h 01min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Tuesday
20 January
07:31 pm
Philadelphia (PHL)
08:31 pm
Dulles (IAD)
01h 00min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Sunday
18 January
10:37 am
()
12:37 pm
Dulles (IAD)
Canadair (Bomb
Canadair (Bomb
- DIVERTED