￥75,860 Cheap Flights from London (LON) to Seattle (SEA)

View ￥75,860 flight on Wed, Oct 15, 2025Opens in a new window

Popular airlines from London to Seattle, WA (SEA-Seattle - Tacoma Intl.)

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Cheap Flights from London to Seattle (LON-SEA)

Prices were available within the past 7 days and start at ￥75,860 for one-way flights and ￥77,550 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Tue, Jan 20 - Wed, Jan 28
LGW
London
SEA
Seattle
￥77,550 Roundtrip, found 5 days ago
￥77,550
Roundtrip
found 5 days ago
Select Icelandair flight, departing Tue, Jan 20 from London to Seattle, returning Wed, Jan 28, priced at ￥77,550 found 5 days ago
Icelandair
Mon, Oct 6 - Mon, Oct 13
LHR
London
SEA
Seattle
￥83,690 Roundtrip, found 4 days ago
￥83,690
Roundtrip
found 4 days ago
Select Icelandair flight, departing Mon, Oct 6 from London to Seattle, returning Mon, Oct 13, priced at ￥83,690 found 4 days ago
Scandinavian Airlines
Thu, Sep 4 - Fri, Sep 12
LHR
London
SEA
Seattle
￥86,710 Roundtrip, found 4 days ago
￥86,710
Roundtrip
found 4 days ago
Select Scandinavian Airlines flight, departing Thu, Sep 4 from London to Seattle, returning Fri, Sep 12, priced at ￥86,710 found 4 days ago
Delta
Tue, Jan 20 - Wed, Jan 28
LHR
London
SEA
Seattle
￥89,210 Roundtrip, found 5 days ago
￥89,210
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Jan 20 from London to Seattle, returning Wed, Jan 28, priced at ￥89,210 found 5 days ago
United
Mon, Apr 13 - Mon, Apr 20
LHR
London
SEA
Seattle
￥91,140 Roundtrip, found 18 hours ago
￥91,140
Roundtrip
found 18 hours ago
Select United flight, departing Mon, Apr 13 from London to Seattle, returning Mon, Apr 20, priced at ￥91,140 found 18 hours ago
Virgin Atlantic
Mon, Oct 6 - Mon, Oct 13
LHR
London
SEA
Seattle
￥91,180 Roundtrip, found 4 days ago
￥91,180
Roundtrip
found 4 days ago
Select Virgin Atlantic flight, departing Mon, Oct 6 from London to Seattle, returning Mon, Oct 13, priced at ￥91,180 found 4 days ago
American Airlines
Mon, Sep 8 - Thu, Sep 18
LHR
London
SEA
Seattle
￥92,680 Roundtrip, found 3 days ago
￥92,680
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Sep 8 from London to Seattle, returning Thu, Sep 18, priced at ￥92,680 found 3 days ago
Air Canada
Thu, Sep 4 - Fri, Sep 12
LHR
London
SEA
Seattle
￥92,700 Roundtrip, found 4 days ago
￥92,700
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Sep 4 from London to Seattle, returning Fri, Sep 12, priced at ￥92,700 found 4 days ago
British Airways
Mon, Oct 6 - Mon, Oct 13
LHR
London
SEA
Seattle
￥96,210 Roundtrip, found 4 days ago
￥96,210
Roundtrip
found 4 days ago
Select British Airways flight, departing Mon, Oct 6 from London to Seattle, returning Mon, Oct 13, priced at ￥96,210 found 4 days ago
KLM
Tue, Jan 20 - Wed, Jan 28
LHR
London
SEA
Seattle
￥97,030 Roundtrip, found 5 days ago
￥97,030
Roundtrip
found 5 days ago
Select KLM flight, departing Tue, Jan 20 from London to Seattle, returning Wed, Jan 28, priced at ￥97,030 found 5 days ago

Find the cheapest month to fly from London (LON) to Seattle (SEA)

February is typically the cheapest month to fly

From ￥62,031 - ￥133,556 per traveler.

Graph displaying average flight prices per month

Flights from London (LGW) to Seattle (SEA)
Origin airport
Gatwick
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Turkish Airlines, United, WestJet
Roundtrip price
￥77,550
Distance
7697 km

London to Seattle Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from London to will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Seattle.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with LON to SEA flights that won’t make your bank account wince. Ready to temporarily leave behind London for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SEA with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from London (LON-All Airports) to Sea-Tac Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from London (LON-All Airports) to Sea-Tac Airport was ￥77,550. Cheap tickets don't wait forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from London (LON-All Airports) to Seattle - Tacoma Intl. Airport (SEA)?
This can vary between airlines, as each has its own terms and conditions. Visit the Customer Service Portal, where you'll find easy-to-follow instructions on how to cancel your flight online.
How do I find cheap flights from London (LON-All Airports) to Sea-Tac Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London (LON-All Airports) to SEA flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from London (LON-All Airports) to Seattle - Tacoma Intl. Airport (SEA)?
From London (LON-All Airports) to SEA, you'll be in the air for roughly 14 hours and 48 minutes. If you've been looking forward to finishing that amazing novel, now's the time to do it.
How far is the flight from London (LON-All Airports) to Sea-Tac Airport?
The distance is around 7,700 kilometers, so fill your carry-on bag with all you need to make your journey comfortable. Not sure what to take on board your England to SeaTac flight? A travel pillow, earplugs and a sleep mask are a few essentials.
Which airlines fly direct from London (LON-All Airports) to SEA?
Whether you're after a one-way or return flight, you'll have your choice of airlines that will take you straight from London (LON-All Airports) to Sea-Tac Airport. These are some of the most popular ones:
  • Virgin Atlantic - (VS) with 30 monthly flights
  • American Airlines - (AA) with 30 monthly flights
  • British Airways - (BA) with 30 monthly flights
  • Delta Air Lines - (DL) with 17 monthly flights

Are London (LON-All Airports) to SEA flight tickets cheaper when they're purchased at the last minute?
Flight prices go up and down like a yo-yo, so not always. While last-minute deals between London (LON-All Airports) and Sea-Tac Airport are of course possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some carriers publish their prices up to a year before the departure date. Expedia is continuously updating the biggest bargains around, so keep checking back and be ready to book when the price is right.
Can I fly from London (LON-All Airports) to Seattle - Tacoma Intl. Airport (SEA) right now?
To see what travel restrictions and quarantine requirements are in place for different citizens flying from London (LON-All Airports) to Seattle - Tacoma Intl. Airport (SEA) please visit our COVID 19 travel advisor portal link.

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Seattle nearby Airports

Seattle Paine Field Intl. Airport

London nearby Airports

London

Heathrow to Seattle
￥83,690
*Available to Expedia members.