| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Aug 18 | DEN | BOS | 18:23 | 00:12 |
Landed Late
|
Track > |
| Aug 17 | DEN | BOS | 18:17 | 23:45 |
Landed
|
Track > |
| Aug 16 | DEN | BOS | 18:47 | 00:18 |
Landed Late
|
Track > |
| Aug 15 | DEN | BOS | 20:52 | 02:21 |
Delayed
|
Track > |
| Aug 14 | DEN | BOS | 21:05 | 02:30 |
Delayed
|
Track > |
| Aug 13 | DEN | BOS | 18:37 | 00:00 |
Landed
|
Track > |
| Aug 12 | DEN | BOS | 18:25 | 23:57 |
Landed
|
Track > |
| Aug 11 | DEN | BOS | 18:19 | 23:55 |
Landed
|
Track > |
| Aug 10 | DEN | BOS | 18:19 | 23:47 |
Landed
|
Track > |
| Aug 09 | DEN | BOS | 18:22 | 00:17 |
Landed Late
|
Track > |
United Airlines Flight UA503 connects Denver, United States to Boston, United States, taking off from Denver International Airport DEN and landing at Boston Logan International Airport BOS.
How long is the UA503 flight from Denver to Boston?
The average flight time from Denver to Boston is 3 hours and 33 minutes. The flight distance is 2816 km / 1749 miles and the average flight speed is 792 km/h / 492 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA503 Denver to Boston?
The Airportia On-Time Performance Rating for United Airlines Flight UA503 is 4.4/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA503 arriving at?
Flight UA503 arrives at Boston Logan International Airport (BOS) Terminal B.
When was the latest UA503 flight?
The latest flight took off on Tuesday, August 19th, 2025 with the flight status being Landed on 00:12.
How else can the flight UA503 be referenced as?
This United Airlines flight can also be referenced as UAL503, UA0503, UA 503, UAL 503.
How often is flight UA503 delayed?
On average, 70% of all UA503 flights are delayed. The average delay is 52 minutes.
Can I get compensation for my delayed or cancelled UA503 flight or baggage issues?
If your UA503 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA503 Flight Tracker above for more details.
Other flights departing from Denver DEN: UA1691, UA1764, UA1356, UA1246
Other flights arriving at Boston BOS: B61308, UA1129, B68354, UA297
All flights connecting Denver DEN to Boston BOS.
