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Is AS101 usually on time? London to Seattle
Alaska Airlines flight 101, LHR to SEA.
Window: last 90 days, about 90 flights observed. Last refreshed: 2026-10-07.
On time
~60%
within 15 min
Typical arrival
+5 min
median, rounded
Worst 1 in 10
about 55 min
late or worse
Cancelled
about 1 in 50
over the window
What we have seen
- Over the last 90 days, about 60% of AS101 arrivals from London to Seattle landed within 15 minutes of schedule.
- The typical arrival was about 5 minutes behind schedule.
- One arrival in ten was about 55 minutes late or worse.
- Cancellations over the window: about 1 in 50, across about 90 flights observed.
- Usual aircraft: Boeing 787-9.
- Usual departure terminal at LHR: Terminal 3.
These describe the last 90 days. They are not a forecast for any one departure.
Related
Frequently asked
- Is AS101 usually on time?
- Over the last 90 days, about 60% of AS101 arrivals from London to Seattle landed within 15 minutes of schedule. The typical arrival was about 5 minutes behind schedule.
- How late does AS101 get?
- One arrival in ten was about 55 minutes late or worse.
- How often is AS101 cancelled?
- Cancellations over the window: about 1 in 50, across about 90 flights observed.
- What aircraft flies AS101?
- AS101 has most often been operated by a Boeing 787-9 over the last 90 days.
- Which terminal does AS101 leave from at LHR?
- AS101 has most often departed from Terminal 3 at London (LHR). Check your airline on the day; terminals change.
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