| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Oct 03 | DEN | SEA | 19:57 | 21:19 |
Landed
|
Track > |
| Oct 02 | DEN | SEA | 19:59 | 21:20 |
Landed
|
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| Oct 01 | DEN | SEA | 18:20 | 19:54 |
Landed
|
Track > |
| Sep 30 | DEN | SEA | 18:36 | 19:58 |
Landed
|
Track > |
| Sep 29 | DEN | SEA | 20:07 | 21:30 |
Landed
|
Track > |
| Sep 28 | DEN | SEA | 19:47 | 21:04 |
Landed
|
Track > |
| Sep 27 | DEN | SEA | 19:06 | 20:13 |
Landed
|
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| Sep 26 | DEN | SEA | 19:42 | 21:02 |
Landed
|
Track > |
| Sep 25 | DEN | SEA | 19:46 | 21:09 |
Landed
|
Track > |
| Sep 24 | DEN | SEA | 18:38 | 19:51 |
Landed
|
Track > |
Alaska Airlines Flight AS621 connects Denver, United States to Seattle, United States, taking off from Denver International Airport DEN and landing at Seattle Tacoma International Airport SEA.
How long is the AS621 flight from Denver to Seattle?
The average flight time from Denver to Seattle is 2 hours and 20 minutes. The flight distance is 1645 km / 1022 miles and the average flight speed is 706 km/h / 438 mph.
What is the On-Time Performance (OTP) of Alaska Airlines Flight AS621 Denver to Seattle?
The Airportia On-Time Performance Rating for Alaska Airlines Flight AS621 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest AS621 flight?
The latest flight took off on Saturday, October 4th, 2025 with the flight status being Landed on 21:19.
How else can the flight AS621 be referenced as?
This Alaska Airlines flight can also be referenced as ASA621, AS0621, AS 621, ASA 621.
How often is flight AS621 delayed?
On average, 0% of all AS621 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled AS621 flight or baggage issues?
If your AS621 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 AS621 Flight Tracker above for more details.
Flight AS621 is code-shared by 3 airlines using the flight numbers HA4867, JX7039, TN2348
Other flights departing from Denver DEN: G4344, OO4705, DL1675, UA3902
Other flights arriving at Seattle SEA: AS521, DL481, AS2038, AS3426
All flights connecting Denver DEN to Seattle SEA.
