- Fastest outbound flight
- Fastest inbound flight
- non-stop flights
- 41x / week
- Flight distance
- 7,721 km
- Time difference
- Airports in London
- Heathrow
- Gatwick
- City Airport
- Stansted
- Luton
- Southend
- Most popular airlines
- British Airways
- Alaska Airlines
- Delta Air Lines
- Virgin Atlantic Airways
- British Airways
Flight schedule from London (LON) to Seattle-Tacoma (SEA)
Select a travel date in the flight schedule for the route from London (LON) to Seattle-Tacoma (SEA) and compare affordable flight deals.
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Matching outbound flights9 of 9
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- September 20 – 26, 2026
- Sep 27 – Oct 3, 2026
- October 4 – 10, 2026
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- LHRSEAnonstop
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- LHRSEAnonstop
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- LHRSEAnonstop
- LHRSEAnonstop
- LHRSEA1 stopover
Important flight information
Frequently Asked Questions (FAQ)
How long is the flight from London to Seattle-Tacoma?
A nonstop flight from London to Seattle-Tacoma typically takes around 10 hours 5 minutes. If you choose a connecting flight, allow more travel time. Typical one-stop itineraries take around 12 hours 45 minutes. For the quickest trip, a nonstop flight is usually the most comfortable choice.
Are there nonstop flights from London to Seattle-Tacoma?
Yes, there are nonstop flights from London to Seattle-Tacoma, averaging around 5 to 6 flights per day, operated by, among others, British Airways, Alaska Airlines and Delta. If you want to fly without a layover, it is worth filtering specifically for nonstop flights when searching.
Which airlines fly from London to Seattle-Tacoma?
Direct flights from London to Seattle-Tacoma are operated by, among others, British Airways, Alaska Airlines and Delta. Connecting flights with one stop are also available, for example with Icelandair (via Reykjavik-Keflavik). If travel time matters to you, a direct flight is usually the most convenient option. Connecting flights often give you more choice of departure times and airlines.
On which days are there nonstop flights from London to Seattle-Tacoma?
Nonstop flights from London to Seattle-Tacoma operate daily. The schedule may vary by season, so it is worth comparing several travel dates. If your preferred day does not have a nonstop flight, nearby departure days or short connecting flights may be a good alternative.
How many flights are there per day from London to Seattle-Tacoma?
From London to Seattle-Tacoma, there are on average around 5 to 6 flights per day. This usually means you have a good choice of departure times. If you are flexible, you can easily compare times, prices, and airlines.
How many flights per week are there from London to Seattle-Tacoma?
From London to Seattle-Tacoma, there are around 41 to 42 flights per week. This means you usually have connections available on several days and at various times. Beyond the price, it is worth comparing flight duration, airline, and any potential additional fees.
When does the first flight from London to Seattle-Tacoma depart?
The earliest nonstop flight from London to Seattle-Tacoma usually departs at 9:25 AM. The exact departure time may vary by day of the week and airline. Early flights are especially useful if you want to make the most of your arrival day in Seattle-Tacoma.
When does the last flight from London to Seattle-Tacoma depart?
The last nonstop flight from London to Seattle-Tacoma usually departs at 6:30 PM. Late flights can be convenient if you want to travel after work or in the evening. Do check whether it is a nonstop flight, as a connecting itinerary could push the arrival time significantly later.