UA4173 United Airlines - Flight Status
Below, you can find details about United Airlines flight UA4173, 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, December 21, 2025.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA4173
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA4173
UA4173 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions. Flight Status
UA4173 United Airlines to Dulles
Scheduled - On-time
Flight Status for Sunday December 21, 2025
This flight was also scheduled for Yesterday (December 20, 2025). See it here
This flight is also scheduled for Tomorrow (December 22, 2025). See it here
Scheduled - On-time
Flight Status for Sunday December 21, 2025
Airline information
United Airlines
Equipment: Canadair (Bombardier) Regional Jet 550
Departure
Philadelphia (PHL)
December 21, 2025
Philadelphia International Airport
Estimated Departure Time:
02:50 pm
Terminal:
D
Gate:
D7
Scheduled Departure Time: 02:50 pm
Arrival
Dulles (IAD)
December 21, 2025
Washington Dulles International Airport
Estimated Arrival Time:
04:05 pm
Terminal:
-
Gate:
C22
Scheduled Arrival Time: 04:05 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
- SN8955 - Brussels Airlines
Additional Information
Which is the frequency of flight UA4173?
The flight UA4173 is scheduled to flight on Thursday, Friday, Saturday, Sunday on a weekly basis.
Which is the distance of flight UA4173?
The distance between the two airports is 134 miles.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
The flight UA4173 is scheduled to flight on Thursday, Friday, Saturday, Sunday on a weekly basis.
Which is the distance of flight UA4173?
The distance between the two airports is 134 miles.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
Alternative Flights
The following airlines serves the same route between Philadelphia and Dulles:
FedEx
- Flight Number: FX1054. (On Time performance: 60 - Average Delay: 19 minutes)
United Airlines
- Flight Number: UA3494. (On Time performance: 85 - Average Delay: 9 minutes)
- Flight Number: UA3605. (On Time performance: 83 - Average Delay: 7 minutes)
- Flight Number: UA4530. (On Time performance: 81 - Average Delay: 17 minutes)
- Flight Number: UA4611. (On Time performance: 71 - Average Delay: 40 minutes)
FedEx
- Flight Number: FX1054. (On Time performance: 60 - Average Delay: 19 minutes)
United Airlines
- Flight Number: UA3494. (On Time performance: 85 - Average Delay: 9 minutes)
- Flight Number: UA3605. (On Time performance: 83 - Average Delay: 7 minutes)
- Flight Number: UA4530. (On Time performance: 81 - Average Delay: 17 minutes)
- Flight Number: UA4611. (On Time performance: 71 - Average Delay: 40 minutes)
Punctuality and delays
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.
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
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
Last Past Flights UA4173
Date
Departure
Arrival
Duration
Aircraft
Status
Saturday
20 December
20 December
02:46 pm
Philadelphia (PHL)
Philadelphia (PHL)
03:52 pm
Dulles (IAD)
Dulles (IAD)
01h 06min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Friday
19 December
19 December
04:02 pm
Philadelphia (PHL)
Philadelphia (PHL)
05:24 pm
Dulles (IAD)
Dulles (IAD)
01h 22min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Thursday
18 December
18 December
02:43 pm
Philadelphia (PHL)
Philadelphia (PHL)
03:58 pm
Dulles (IAD)
Dulles (IAD)
01h 15min
Canadair (Bomb
Canadair (Bomb
Landed - On-time