| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 24 | DEN | BOS | 18:24 | 23:56 |
Delayed
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| Sep 23 | DEN | BOS | 15:09 | 20:33 |
Landed Late
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| Sep 22 | DEN | BOS | 14:50 | 20:19 |
Landed Late
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| Sep 21 | DEN | BOS | 14:43 | 20:25 |
Landed Late
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| Sep 20 | DEN | BOS | 14:19 | 19:50 |
Landed
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| Sep 19 | DEN | BOS | 14:56 | 20:45 |
Landed Late
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| Sep 18 | DEN | BOS | 17:27 | 22:59 |
Delayed
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| Sep 17 | DEN | BOS | 15:06 | 20:52 |
Delayed
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| Sep 16 | DEN | BOS | 14:51 | 20:28 |
Landed Late
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| Sep 15 | DEN | BOS | 16:04 | 21:36 |
Delayed
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United Airlines Flight UA645 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 UA645 flight from Denver to Boston?
The average flight time from Denver to Boston is 3 hours and 35 minutes. The flight distance is 2816 km / 1749 miles and the average flight speed is 785 km/h / 488 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA645 Denver to Boston?
The Airportia On-Time Performance Rating for United Airlines Flight UA645 is 3.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA645 arriving at?
Flight UA645 arrives at Boston Logan International Airport (BOS) Terminal B.
When was the latest UA645 flight?
The latest flight took off on Thursday, September 25th, 2025 with the flight status being En-Route on 23:56.
How else can the flight UA645 be referenced as?
This United Airlines flight can also be referenced as UAL645, UA0645, UA 645, UAL 645.
How often is flight UA645 delayed?
On average, 90% of all UA645 flights are delayed. The average delay is 78 minutes.
Can I get compensation for my delayed or cancelled UA645 flight or baggage issues?
If your UA645 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 UA645 Flight Tracker above for more details.
Claim compensation for your flight delay or cancellation!
Flight delays happen, but that doesn’t mean you have to accept them. You may be entitled to as much as 600€ in compensation if your flight has been delayed, cancelled or overbooked within the last three years. Claim Compensation Now >
Other flights departing from Denver DEN: UA743, WN2294, UA439, WN1247
Other flights arriving at Boston BOS: UA664, WN2329, WN452, UA1393
All flights connecting Denver DEN to Boston BOS.
