₹66,548 Cheap Flights from London (LHR) to Seattle (SEA)

View ₹66,548 flight on Fri, 8 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 ₹66,548 for one-way flights and ₹61,779 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Wed, 17 Sep - Wed, 24 Sep
LHR
London
SEA
Seattle
₹61,779 Return, found 3 days ago
₹61,779
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Wed, 17 Sep from London to Seattle, returning Wed, 24 Sep, priced at ₹61,779 found 3 days ago
United
Wed, 26 Nov - Sun, 14 Dec
LHR
London
SEA
Seattle
₹62,118 Return, found 6 days ago
₹62,118
Return
found 6 days ago
Select United flight, departing Wed, 26 Nov from London to Seattle, returning Sun, 14 Dec, priced at ₹62,118 found 6 days ago
United
Wed, 17 Sep - Wed, 24 Sep
LHR
London
SEA
Seattle
₹62,280 Return, found 3 days ago
₹62,280
Return
found 3 days ago
Select United flight, departing Wed, 17 Sep from London to Seattle, returning Wed, 24 Sep, priced at ₹62,280 found 3 days ago
Lufthansa
Mon, 1 Sep - Mon, 15 Sep
LHR
London
SEA
Seattle
₹62,430 Return, found 2 days ago
₹62,430
Return
found 2 days ago
Select Lufthansa flight, departing Mon, 1 Sep from London to Seattle, returning Mon, 15 Sep, priced at ₹62,430 found 2 days ago
United
Wed, 17 Sep - Wed, 24 Sep
LHR
London
SEA
Seattle
₹62,991 Return, found 3 days ago
₹62,991
Return
found 3 days ago
Select United flight, departing Wed, 17 Sep from London to Seattle, returning Wed, 24 Sep, priced at ₹62,991 found 3 days ago
Delta
Mon, 1 Sep - Mon, 15 Sep
LHR
London
SEA
Seattle
₹63,117 Return, found 2 days ago
₹63,117
Return
found 2 days ago
Select Delta flight, departing Mon, 1 Sep from London to Seattle, returning Mon, 15 Sep, priced at ₹63,117 found 2 days ago
Lufthansa
Wed, 20 May - Sun, 31 May
LHR
London
SEA
Seattle
₹63,243 Return, found 4 days ago
₹63,243
Return
found 4 days ago
Select Lufthansa flight, departing Wed, 20 May from London to Seattle, returning Sun, 31 May, priced at ₹63,243 found 4 days ago
Lufthansa
Wed, 20 May - Sun, 31 May
LHR
London
SEA
Seattle
₹63,397 Return, found 4 days ago
₹63,397
Return
found 4 days ago
Select Lufthansa flight, departing Wed, 20 May from London to Seattle, returning Sun, 31 May, priced at ₹63,397 found 4 days ago
American Airlines
Wed, 17 Sep - Wed, 24 Sep
LHR
London
SEA
Seattle
₹63,477 Return, found 3 days ago
₹63,477
Return
found 3 days ago
Select American Airlines flight, departing Wed, 17 Sep from London to Seattle, returning Wed, 24 Sep, priced at ₹63,477 found 3 days ago
Virgin Atlantic
Mon, 1 Sep - Mon, 15 Sep
LHR
London
SEA
Seattle
₹63,599 Return, found 2 days ago
₹63,599
Return
found 2 days ago
Select Virgin Atlantic flight, departing Mon, 1 Sep from London to Seattle, returning Mon, 15 Sep, priced at ₹63,599 found 2 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.
Airlines serving
Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, Turkish Airlines, United, Virgin Atlantic
Return price
₹61,779
Distance
7657 km

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 ₹61,779. 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.

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London Airports

London

Gatwick to Seattle
₹100,399.00
*Available to Expedia members.