₹72,402 Cheap Flights from London (LHR) to Seattle (SEA)

View ₹72,402 flight on Fri, 15 Aug 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from London (LHR) to Seattle (SEA)

Prices were available within the past 7 days and start at ₹72,402 for one-way flights and ₹55,661 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Fri, 15 Aug - Sun, 17 Aug
LHR
London
SEA
Seattle
₹55,661 Return, found 5 days ago
₹55,661
Return
found 5 days ago
Select Icelandair flight, departing Fri, 15 Aug from London to Seattle, returning Sun, 17 Aug, priced at ₹55,661 found 5 days ago
American Airlines
Mon, 18 Aug - Wed, 3 Sep
LHR
London
SEA
Seattle
₹58,413 Return, found 5 days ago
₹58,413
Return
found 5 days ago
Select American Airlines flight, departing Mon, 18 Aug from London to Seattle, returning Wed, 3 Sep, priced at ₹58,413 found 5 days ago
Virgin Atlantic
Wed, 20 Aug - Tue, 9 Sep
LHR
London
SEA
Seattle
₹58,899 Return, found 3 days ago
₹58,899
Return
found 3 days ago
Select Virgin Atlantic flight, departing Wed, 20 Aug from London to Seattle, returning Tue, 9 Sep, priced at ₹58,899 found 3 days ago
Virgin Atlantic
Mon, 8 Sep - Thu, 25 Sep
LHR
London
SEA
Seattle
₹59,474 Return, found 5 days ago
₹59,474
Return
found 5 days ago
Select Virgin Atlantic flight, departing Mon, 8 Sep from London to Seattle, returning Thu, 25 Sep, priced at ₹59,474 found 5 days ago
Delta
Mon, 4 Aug - Wed, 13 Aug
LHR
London
SEA
Seattle
₹59,897 Return, found 5 days ago
₹59,897
Return
found 5 days ago
Select Delta flight, departing Mon, 4 Aug from London to Seattle, returning Wed, 13 Aug, priced at ₹59,897 found 5 days ago
Virgin Atlantic
Wed, 20 Aug - Mon, 8 Sep
LHR
London
SEA
Seattle
₹61,432 Return, found 3 days ago
₹61,432
Return
found 3 days ago
Select Virgin Atlantic flight, departing Wed, 20 Aug from London to Seattle, returning Mon, 8 Sep, priced at ₹61,432 found 3 days ago
United
Wed, 1 Oct - Sun, 12 Oct
LHR
London
SEA
Seattle
₹61,550 Return, found 5 days ago
₹61,550
Return
found 5 days ago
Select United flight, departing Wed, 1 Oct from London to Seattle, returning Sun, 12 Oct, priced at ₹61,550 found 5 days ago
United
Tue, 30 Sep - Sun, 12 Oct
LHR
London
SEA
Seattle
₹61,760 Return, found 5 days ago
₹61,760
Return
found 5 days ago
Select United flight, departing Tue, 30 Sep from London to Seattle, returning Sun, 12 Oct, priced at ₹61,760 found 5 days ago
American Airlines
Thu, 21 Aug - Mon, 25 Aug
LHR
London
SEA
Seattle
₹61,868 Return, found 3 days ago
₹61,868
Return
found 3 days ago
Select American Airlines flight, departing Thu, 21 Aug from London to Seattle, returning Mon, 25 Aug, priced at ₹61,868 found 3 days ago
Delta
Wed, 27 Aug - Mon, 8 Sep
LHR
London
SEA
Seattle
₹62,007 Return, found 5 days ago
₹62,007
Return
found 5 days ago
Select Delta flight, departing Wed, 27 Aug from London to Seattle, returning Mon, 8 Sep, priced at ₹62,007 found 5 days ago

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

February is typically the cheapest month to fly

From ₹41,665 - ₹82,948 per traveller.

Graph displaying average flight prices per month

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Flight from London to Seattle route information
Origin airport
Heathrow
Destination airport
Seattle - Tacoma Intl.
Return price
₹55,661
Distance
7657 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 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 LHR 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 Heathrow Airport to Sea-Tac Airport?
Start packing your bags, because round-trip journeys from LHR to Seattle - Tacoma Intl. Airport (SEA) start from ₹55,661. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to secure the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport (LHR) to Sea-Tac Airport?
Most flights can be cancelled online, but whether you incur a fee depends on your airline. If you do have to cancel your trip, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Heathrow Airport to SEA 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 Heathrow to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Heathrow Airport (LHR) to Seattle - Tacoma Intl. Airport (SEA)?
With around 7,700 kilometres separating LHR and Seattle - Tacoma Intl. Airport (SEA), your flight will be a long one. Pack wisely to make your time on board more comfortable. Little things like an extra pair of socks and a good neck pillow can make a big difference.
Which airlines fly direct from Heathrow Airport to Sea-Tac Airport?
Getting from London Heathrow to Sea-Tac Airport is easy when you have a good range of airlines to choose from. Here are a few of the best:

  • 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 Heathrow Airport to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes score a bargain, with some of the cheapest airfares from London Heathrow to SEA surfacing a few weeks before the departure date. If you'd rather book ahead, Expedia compares and updates all the best flight deals continuously — as early as a year in advance in some cases. It depends on the carrier though, as not all airlines advertise prices that far in advance.

Explore a world of travel with Expedia

London Airports

London

Gatwick to Seattle
₹150,598.00
*Available to Expedia members.