| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 13 | SEA | LHR | 22:22 | 15:17 |
En-Route
|
Track > |
| Jul 12 | SEA | LHR | 22:33 | 15:05 |
Landed
|
Track > |
| Jul 11 | SEA | LHR | 22:22 | 15:09 |
Landed
|
Track > |
| Jul 10 | SEA | LHR | 22:10 | 14:48 |
Landed
|
Track > |
| Jul 09 | SEA | LHR | 22:32 | 15:25 |
Landed Late
|
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| Jul 08 | SEA | LHR | 22:06 | 14:51 |
Landed
|
Track > |
| Jul 07 | SEA | LHR | 22:24 | 15:33 |
Landed Late
|
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| Jul 06 | SEA | LHR | 22:28 | 15:06 |
Landed
|
Track > |
| Jul 05 | SEA | LHR | 22:12 | 14:47 |
Landed
|
Track > |
| Jul 04 | SEA | LHR | 21:54 | 14:26 |
Landed
|
Track > |
Alaska Airlines Flight AS100 connects Seattle, United States to London, United Kingdom, taking off from Seattle Tacoma International Airport SEA and landing at London Heathrow Airport LHR.
How long is the AS100 flight from Seattle to London?
The average flight time from Seattle to London is 8 hours and 44 minutes. The flight distance is 7701 km / 4785 miles and the average flight speed is 882 km/h / 548 mph.
How many AS100 flights are operated per week?
7 flights per week. The flight AS100 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of Alaska Airlines Flight AS100 Seattle to London?
The Airportia On-Time Performance Rating for Alaska Airlines Flight AS100 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight AS100 arriving at?
Flight AS100 arrives at London Heathrow Airport (LHR) Terminal 3.
When was the latest AS100 flight?
The latest flight took off on Tuesday, July 14th, 2026 with the flight status being En-Route on 15:17.
How else can the flight AS100 be referenced as?
This Alaska Airlines flight can also be referenced as ASA100, AS0100, AS 100, ASA 100.
How often is flight AS100 delayed?
On average, 50% of all AS100 flights are delayed. The average delay is 13 minutes.
Can I get compensation for my delayed or cancelled AS100 flight or baggage issues?
If your AS100 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 AS100 Flight Tracker above for more details.
Other flights departing from Seattle SEA: DL567, DL3893, DL2512, DL20
Other flights arriving at London LHR: CX257, LA8084, BA288, EY65
All flights connecting Seattle SEA to London LHR.