Cheap flights from London to Seattle

London
LON
Seattle-Tacoma
SEA

Flight deals from London to Seattle

Below you can see the best deals on flights London — Seattle for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 1 October, from AED 1,681.

Top 10 cheap flights from London to Seattle

FI
FI
 1,896

London — Seattle

21:25—11:45
7 Sep 2026
22 h 20 m
1 stop
FI
FI
 1,896

London — Seattle

21:25—11:45
8 Sep 2026
22 h 20 m
1 stop
FI
FI
 1,899

London — Seattle

15:40—11:45
8 Sep 2026
28 h 5 m
1 stop
FI
FI
 1,899

London — Seattle

13:00—11:45
8 Sep 2026
30 h 45 m
1 stop
FI
FI
 1,937

London — Seattle

15:40—20:40
2 Sep 2026
13 h
1 stop
FI
FI
 1,939

London — Seattle

21:25—11:45
6 Sep 2026
22 h 20 m
1 stop
FI
FI
 1,941

London — Seattle

21:25—11:45
1 Sep 2026
22 h 20 m
1 stop
FI
FI
 1,942

London — Seattle

15:40—11:45
6 Sep 2026
28 h 5 m
1 stop
FI
FI
 1,942

London — Seattle

13:00—11:45
6 Sep 2026
30 h 45 m
1 stop
FI
FI
 1,947

London — Seattle

21:25—20:40
1 Sep 2026
31 h 15 m
1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the London — Seattle flight

Looking for cheap flights from London to Seattle? Compare fares from different airlines, check the flight schedule and travel time — and book your London — Seattle ticket online at the best price.

The route has direct flights — around 113 flights per week, flights are operated by British Airways, Aer Lingus, Alaska Airlines, Virgin Atlantic and 7 more airlines, a nonstop flight takes about 9 h 45 min, the distance between the cities is around 7,723 km.

Planning your trip? You may find our Seattle travel guide, how to get from the airport into town and Seattle weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from AED 1,588Min. price
MayCheapest
AugustPeak season
YesDirect flights
7,723 kmDistance
9 h 45 minTravel time
11Airlines
113 / wkFlights

Flight schedule from London to Seattle

The table shows direct flights from London to Seattle on the selected date. The flight takes approximately 9 h 45 min. Regular flights are operated by British Airways, Aer Lingus, Alaska Airlines and Virgin Atlantic. Departures from Heathrow Airport, London Gatwick Airport and Stansted Airport airports, arrivals at Seattle-Tacoma International Airport and Paine Field.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 26 Aug 2026

Flight ticket prices by day: London — Seattle

Below is a calendar of the lowest flight ticket prices for London — Seattle by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from AED 1,588 in May, and the most expensive are around AED 2,346 in August. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from London to Seattle by month. Tickets are usually cheapest in February (around AED 1,718) and priciest in July (about AED 2,555) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
JanAED 1,806lowMayAED 2,071mediumSepAED 2,115medium
FebAED 1,718lowJunAED 2,379highOctAED 1,850low
MarAED 1,938mediumJulAED 2,555highNovAED 1,762low
AprAED 1,983mediumAugAED 2,467highDecAED 2,423high

Some values are estimated based on seasonality.

When to fly

Weather in Seattle: it is warmest in August (up to 25 °C on average) and coolest in December (around 8 °C). The driest month is July.

Tickets are usually cheapest in May and most expensive in August. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Seattle

Dry and wet days · Seattle

Wind speed and direction · Seattle

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How to get the best deal on a London — Seattle ticket

  • Book ahead: fares for London — Seattle are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • London is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to Seattle is usually May — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the London — Seattle route are operated by 11 airlines; British Airways runs the most flights (around 25% of all flights). Compare carriers, flight shares and schedules below.

  • British AirwaysBA
    9x/week
    WebsiteFleet: 29243M pax/year
    • Direct flight LHR → SEA9x/week
      Duration
      9h 45m
      Days
      MTWTFSS
    24.8%Open →
  • Aer LingusEI
    9x/week
    WebsiteFleet: 5710.7M pax/year
    • Direct flight LHR → SEA9x/week
      Duration
      9h 45m
      Days
      MTWTFSS
    24.8%Open →
  • Alaska AirlinesAS
    5x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight LHR → SEA5x/week
    14.2%Open →
  • Virgin AtlanticVS
    5x/week
    WebsiteFleet: 415.3M pax/year
    • Direct flight LHR → SEA5x/week
      Duration
      10h 20m
      Days
      MTWTFSS
    13.3%Open →
  • DeltaDL
    5x/week
    WebsiteFleet: 986190M pax/year
    • Direct flight LHR → SEA5x/week
    13.3%Open →
  • American AirlinesAA
    1x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight LHR → SEA1x/week
    1.8%Open →
  • Air FranceAF
    1x/week
    WebsiteFleet: 22045M pax/year
    • Direct flight LHR → SEA1x/week
    1.8%Open →
  • IberiaIB
    1x/week
    WebsiteFleet: 9224M pax/year
    • Direct flight LHR → SEA1x/week
    1.8%Open →
  • KLMKL
    1x/week
    WebsiteFleet: 11230.3M pax/year
    • Direct flight LHR → SEA1x/week
    1.8%Open →
  • FinnairAY
    1x/week
    WebsiteFleet: 7911M pax/year
    • Direct flight LHR → SEA1x/week
    1.8%Open →
  • SASSK
    1x/week
    WebsiteFleet: 13524M pax/year
    • Direct flight LHR → SEA1x/week
    0.9%Open →

Cities and airports on the London — Seattle route

Flights London — Seattle depart from Heathrow Airport, London Gatwick Airport, Stansted Airport and London Luton Airport and arrive at Seattle-Tacoma International Airport and Paine Field. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

London

LON
United Kingdom
About the cityHow to get thereWeatherAll about the country United Kingdom
Arrival

Seattle

SEA
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the London — Seattle flight

How long is the flight from London to Seattle?

A nonstop London — Seattle flight takes about 9 h 45 min — the distance between the cities is around 7,723 km.

How far is it from London to Seattle?

The distance from London to Seattle is about 7,723 km, which a nonstop flight covers in around 9 h 45 min.

Are there direct flights from London to Seattle?

Yes, there are nonstop flights London — Seattle — around 113 flights per week.

Which airlines fly from London to Seattle?

Airlines operating London — Seattle include British Airways, Aer Lingus, Alaska Airlines, Virgin Atlantic, Delta. See the full list with schedules in the "Airlines" section on this page.

Which airports do London — Seattle flights use?

Flights from London depart from Heathrow Airport, London Gatwick Airport, Stansted Airport, and arrive at Seattle-Tacoma International Airport, Paine Field. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from London to Seattle?

The price of a London — Seattle ticket depends on your travel date, season and demand: it is usually cheapest to fly in May, and most expensive in August. Tickets typically cost between AED 1,588 and AED 2,346. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights London — Seattle?

Flights London — Seattle are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is May. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from London to Seattle?

To catch a low fare London — Seattle, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually May.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from London

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Where else you can fly from Seattle

See all
Los AngelesAnchorageVancouverSan FranciscoPhoenixSan DiegoSan JoseSpokanePortlandSanta AnaNew York CityBoiseDenverChicagoDallasSalt Lake CitySacramentoLas VegasRedmondBostonAtlantaHonoluluWashington, D.C.MinneapolisPascoAustinBurbankFairbanksJuneauEugeneNashvilleHoustonCalgaryBozemanDetroitPalm SpringsMissoulaMedfordRenoOrlando

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