Informational Guide to Boston Logan Airport (BOS) - NON OFFICIAL

UA503 United Airlines - Flight Status

Below, you can find details about United Airlines flight UA503, which currently operates between the airports of Denver - Denver International Airport (Airport Code DEN) and Boston - Boston Logan International Airport (Airport Code BOS).
This flight data pertains specifically to the flight's details for Wednesday, July 02, 2025.

UA503 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

UA503 United Airlines from Denver

Scheduled - On-time
Flight Status for Wednesday July 02, 2025
This flight was also scheduled for Yesterday (June 30, 2025). See it here
This flight is also scheduled for Today (July 01, 2025). See it here

Airline information

United Airlines
United Airlines
Equipment: Airbus A321neo

Departure

Denver (DEN)
July 02, 2025
Denver International Airport
Estimated Departure Time:
05:52 pm
Terminal:
-
Gate:
-
Scheduled Departure Time: 05:52 pm

Arrival

Boston (BOS)
July 02, 2025
Boston Logan International Airport
Estimated Arrival Time:
11:55 pm
Terminal:
B
Gate:
-
Scheduled Arrival Time: 11:55 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.boston-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.

Additional Information

Which is the frequency of flight UA503?
The flight UA503 is scheduled to flight on Monday, Tuesday, Thursday, Friday, Saturday, Sunday on a weekly basis.

Which is the distance of flight UA503?
The distance between the two airports is 1750 miles.

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 Denver: 2025-07-01 02:22:16
Current Time in Boston: 2025-07-01 04:22:16

Alternative Flights

The following airlines serves the same route between Denver and Boston:

JetBlue
- Flight Number: B6394. (On Time performance: 68 - Average Delay: 22 minutes)
- Flight Number: B6494. (On Time performance: 67 - Average Delay: 9 minutes)
- Flight Number: B6994. (On Time performance: 84 - Average Delay: 14 minutes)

Delta Air Lines
- Flight Number: DL499. (On Time performance: 74 - Average Delay: 20 minutes)
- Flight Number: DL719. (On Time performance: 56 - Average Delay: 12 minutes)

United Airlines
- Flight Number: UA1027. (On Time performance: 62 - Average Delay: 22 minutes)
- Flight Number: UA1218. (On Time performance: 51 - Average Delay: 35 minutes)
- Flight Number: UA1292.
- Flight Number: UA2454. (On Time performance: 95 - Average Delay: 4 minutes)
- Flight Number: UA2461. (On Time performance: 68 - Average Delay: 19 minutes)
- Flight Number: UA2610. (On Time performance: 89 - Average Delay: 4 minutes)
- Flight Number: UA558. (On Time performance: 86 - Average Delay: 5 minutes)
- Flight Number: UA597. (On Time performance: 60 - Average Delay: 29 minutes)
- Flight Number: UA642.

Southwest Airlines
- Flight Number: WN2437. (On Time performance: 48 - Average Delay: 30 minutes)
- Flight Number: WN2850. (On Time performance: 40 - Average Delay: 57 minutes)
- Flight Number: WN3019. (On Time performance: 52 - Average Delay: 35 minutes)
- Flight Number: WN3244. (On Time performance: 42 - Average Delay: 48 minutes)
- Flight Number: WN3499. (On Time performance: 57 - Average Delay: 39 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

Last Past Flights UA503

Date
Departure
Arrival
Duration
Aircraft
Status
Monday
30 June
07:49 pm
Denver (DEN)
01:28 am
Boston (BOS)
03h 39min
Airbus A321neo
Airbus A321neo
Landed - Delayed
Sunday
29 June
06:09 pm
Denver (DEN)
12:10 am
Boston (BOS)
04h 01min
Airbus A321neo
Airbus A321neo
Landed - Delayed
Saturday
28 June
06:06 pm
Denver (DEN)
12:20 am
Boston (BOS)
04h 14min
Airbus A321neo
Airbus A321neo
Landed - Delayed
Friday
27 June
06:38 pm
Denver (DEN)
12:28 am
Boston (BOS)
03h 50min
Airbus A321neo
Airbus A321neo
Landed - Delayed
Thursday
26 June
05:56 pm
Denver (DEN)
12:51 am
Boston (BOS)
04h 55min
Airbus A321neo
Airbus A321neo
Landed - Delayed