NT$21,516 Cheap Flights from London (LON) to Seattle (SEA)

View NT$21,516 flight on Thu, 2026/1/8Opens 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 NT$21,516 for one-way flights and NT$21,874 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$21,874 Roundtrip, found 3 days ago
NT$21,874
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$21,874 found 3 days ago
American Airlines
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,112 Roundtrip, found 3 days ago
NT$22,112
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,112 found 3 days ago
Delta
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,112 Roundtrip, found 3 days ago
NT$22,112
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,112 found 3 days ago
Swiss International Air Lines
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,155 Roundtrip, found 3 days ago
NT$22,155
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,155 found 3 days ago
United
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,278 Roundtrip, found 3 days ago
NT$22,278
Roundtrip
found 3 days ago
Select United flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,278 found 3 days ago
American Airlines
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,314 Roundtrip, found 3 days ago
NT$22,314
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,314 found 3 days ago
United
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,338 Roundtrip, found 3 days ago
NT$22,338
Roundtrip
found 3 days ago
Select United flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,338 found 3 days ago
KLM
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,387 Roundtrip, found 3 days ago
NT$22,387
Roundtrip
found 3 days ago
Select KLM flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,387 found 3 days ago
Air Canada
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,548 Roundtrip, found 3 days ago
NT$22,548
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,548 found 3 days ago
American Airlines
Mon, Sep 1 - Mon, Sep 15
LHR
London
SEA
Seattle
NT$22,627 Roundtrip, found 3 days ago
NT$22,627
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Sep 1 from London to Seattle, returning Mon, Sep 15, priced at NT$22,627 found 3 days ago
Flights from London (LHR) to Seattle (SEA)
Origin airport
Heathrow
Destination airport
Seattle - Tacoma Intl.
Roundtrip price
NT$21,874
Distance
7657 km

England 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 England to Seattle 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 England 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 NT$21,874. 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 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.

Explore a world of travel with Expedia

London nearby Airports

London

Heathrow to Seattle
NT$21,874
*Available to Expedia members.