Book Alaska Airlines flights from Seattle to London from £582

Popular flight offers from Seattle to London

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Prices shown below were available within the past 3 days for the period specified and should not be considered the final price offered. Please note that availability and prices are subject to change.

Alaska Airlines flights from Seattle to London

Seattle London

BEST

DEAL

Wed, 12 Jun SEA - LHR

£598 £582

Prime price per passenger

Best prices from all airlines

Seattle London

BEST

DEAL

Sat, 11 May SEA - LHR

Tue, 14 May LHR - SEA

£600 £587

Prime price per passenger

Seattle London

BEST

DEAL

Fri, 10 May SEA - LHR

Mon, 13 May LHR - SEA

£723 £710

Prime price per passenger

Seattle London

BEST

DEAL

Fri, 10 May SEA - LHR

Mon, 13 May LHR - SEA

£730 £714

Prime price per passenger

Seattle London

BEST

DEAL

Fri, 10 May SEA - LHR

Sun, 12 May LHR - SEA

£731 £718

Prime price per passenger

Seattle London

BEST

DEAL

Sat, 27 Jul SEA - LGW

£420 £392

Prime price per passenger

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Alaska Airlines Seattle-London flights faq's

What do Alaska Airlines flights from Seattle to London cost?

One of Alaska Airlines cheapest prices for a Seattle to London flight we have right now is £ 582. On average though, flights with Alaska Airlines cost £ 597.97 for the route Seattle to London, though it depends a lot on the season and how far in advance you book your tickets.

Cheapest Ticket Price £582 The cheapest fare within the past 72 hours for flights operated by Alaska Airlines from Seattle to London, as booked by our customers.

Flight time 11 h and 28 m The flight duration for Alaska Airlines between Seattle and London is roughly 11 h and 28 m, although it could be affected by other factors.

Departure Airport Seattle All Airports When you fly with Alaska Airlines from Seattle to London, you will depart from Heathrow

Arrival Airport Heathrow When you fly with Alaska Airlines from Seattle to London, you will arrive at Heathrow.