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Cheap flights from Seattle to London

One-way from $312, found by travellers in the last 7 days. Aviasales checks the live price.

Departure
Return
Prices for nearby dates
Mon, Oct 26Any priceTue, Oct 27Any priceWed, Oct 28Any priceThu, Oct 29$312Fri, Oct 30Any priceSat, Oct 31Any priceSun, Nov 1$368Mon, Nov 2Any 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
$312
Icelandair, flight FI 680Found 2 days ago, 1 adult
Check price on Aviasales
3:35pmSeattleThu, Oct 29
Travel time 12h 50m, 2 stopsSEASTN
11:25amLondonFri, Oct 30
$320
Icelandair, flight FI 680Found 3 days ago, 1 adult
Check price on Aviasales
2:35pmSeattleSun, Nov 15
Travel time 10h 55m, 1 stopSEALGW
9:30amLondonMon, Nov 16
$337
Air Canada, flight AC 8807Found 6 days ago, 1 adult
Check price on Aviasales
3:15pmSeattleMon, Mar 1
Travel time 10h 27m, 1 stopSEALHR
9:42amLondonTue, Mar 2
$338
Icelandair, flight FI 680Found 6 days ago, 1 adult
Check price on Aviasales
2:35pmSeattleMon, Feb 1
Travel time 10h 55m, 1 stopSEALHR
9:30amLondonTue, Feb 2
$340
Icelandair, flight FI 680Found 6 days ago, 1 adult
Check price on Aviasales
2:35pmSeattleFri, Jan 1
Travel time 10h 55m, 1 stopSEALHR
9:30amLondonSat, Jan 2

Round trips

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

Plan the rest of the trip

  • Mobile data in United KingdomTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in London, booked ahead at a fixed price.
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  • Things to do in LondonPopular tours from $51.11 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for United Kingdom from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? With a UK or EU airline you may be owed up to £520 per person under UK261.
    Check

Lowest fares by month

In the fares found this week, October has the lowest: from $312 one-way, against $562 in July 2027. Pick a month to see its cheapest date.

$0$200$400$600$312OctNovDecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October$312Thu, Oct 292 stops
November$320Sun, Nov 151 stop
December—
January 2027$340Fri, Jan 11 stop
February 2027$338Mon, Feb 11 stop
March 2027$337Mon, Mar 11 stop
April 2027—
May 2027$343Sat, May 11 stop
June 2027$453Tue, Jun 11 stop
July 2027$562Thu, Jul 11 stop
August 2027—
September 2027—

Questions travellers ask

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

In the fares found this week, October has the lowest: from $312 one-way, against $562 in July 2027.

Are there direct flights from Seattle to London?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

More cheap flights from Seattle

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