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Cheap flights from London to Seattle

One-way from £373, found by travellers in the last 7 days. Aviasales checks the live price.

Departure
Return
Prices for nearby dates
Sun, Jan 3Any priceMon, Jan 4Any priceTue, Jan 5Any priceWed, Jan 6£373Thu, Jan 7Any priceFri, Jan 8Any priceSat, Jan 9£373Sun, Jan 10Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Baggage and fare rules are shown on Aviasales, where the price is checked live.

Cheapest
£373
Icelandair, flight FI 455Found 7 days ago, 1 adult
Check price on Aviasales
20:35LondonWed, Jan 6
Travel time 11h 15m, 1 stopLHRSEA
23:50SeattleWed, Jan 6
£373
Icelandair, flight FI 455Found 4 days ago, 1 adult
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20:35LondonSat, Jan 9
Travel time 11h 15m, 1 stopLHRSEA
23:50SeattleSat, Jan 9
£377
Lufthansa City Airlines, flight VL 2487Found 7 days ago, 1 adult
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07:40LondonFri, Nov 13
Travel time 12h 25m, 1 stopLHRSEA
12:05SeattleFri, Nov 13
Cheapest nonstop
£431
Virgin Atlantic, flight VS 105Found 4 days ago, 1 adult
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10:50LondonSun, Aug 1
Travel time 10h 20m, nonstopLHRSEA
13:10SeattleSun, Aug 1
£834
Icelandair, flight FI 473Found 2 days ago, 1 adult
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15:40LondonThu, Oct 8
Travel time 11h 10m, 1 stopLGWSEA
18:50SeattleThu, Oct 8

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in United StatesTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Seattle, booked ahead at a fixed price.
    See options
  • Things to do in SeattlePopular tours from $32 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for United States from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Arrived 3+ hours late, cancelled at short notice or bumped? Up to £520 per person under UK261.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu1234£8595£8606£8407£8468£8349–10–11–12–13–14–15–16–17–18–19–20–21–22–23–24–25–26–27–28–29–30–31–

November 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9–10–11–12–13£37714–15–16–17–18–19–20–21–22–23–24–25–26–27–28–29–30–

December 2026

MoTuWeThFrSaSu1–2–345678910111213141516171819202122232425262728293031
£373 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Nov 13, £377.

Lowest fares by month

In the fares found this week, January 2027 has the lowest: from £373 one-way, against £431 in August 2027. Pick a month to see its cheapest date.

£0£200£400£600OctNovDec£373JanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October—
November£377Fri, Nov 131 stop
December—
January 2027£373Wed, Jan 61 stop
February 2027—
March 2027—
April 2027—
May 2027—
June 2027—
July 2027—
August 2027£431Sun, Aug 1Nonstop
September 2027—

Questions travellers ask

What is the cheapest month to fly from London to Seattle?

In the fares found this week, January 2027 has the lowest: from £373 one-way, against £431 in August 2027.

Are there direct flights from London to Seattle?

Yes. Recent fares include nonstop flights with Virgin Atlantic.

How long is the flight from London to Seattle?

A nonstop flight takes about 10h 20m. The distance is 7,702 km.

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