₹27,236 Cheap Flights from Seattle (SEA) to London (LHR)

View ₹27,236 flight on Tue, 18 Nov 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at ₹27,236 for one-way flights and ₹51,318 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹51,318 Return, found 6 hours ago
₹51,318
Return
found 6 hours ago
Select Delta flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹51,318 found 6 hours ago
Virgin Atlantic
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹51,810 Return, found 6 hours ago
₹51,810
Return
found 6 hours ago
Select Virgin Atlantic flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹51,810 found 6 hours ago
Delta
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹51,810 Return, found 6 hours ago
₹51,810
Return
found 6 hours ago
Select Delta flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹51,810 found 6 hours ago
Delta
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹53,053 Return, found 6 hours ago
₹53,053
Return
found 6 hours ago
Select Delta flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹53,053 found 6 hours ago
Virgin Atlantic
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹53,545 Return, found 6 hours ago
₹53,545
Return
found 6 hours ago
Select Virgin Atlantic flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹53,545 found 6 hours ago
Delta
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹53,602 Return, found 6 hours ago
₹53,602
Return
found 6 hours ago
Select Delta flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹53,602 found 6 hours ago
United
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹54,072 Return, found 6 hours ago
₹54,072
Return
found 6 hours ago
Select United flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹54,072 found 6 hours ago
Virgin Atlantic
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹54,094 Return, found 6 hours ago
₹54,094
Return
found 6 hours ago
Select Virgin Atlantic flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹54,094 found 6 hours ago
Air Canada
Mon, 10 Nov - Mon, 24 Nov
SEA
Seattle
LHR
London
₹55,763 Return, found 11 hours ago
₹55,763
Return
found 11 hours ago
Select Air Canada flight, departing Mon, 10 Nov from Seattle to London, returning Mon, 24 Nov, priced at ₹55,763 found 11 hours ago
Lufthansa
Sun, 2 Nov - Tue, 18 Nov
SEA
Seattle
LHR
London
₹56,354 Return, found 6 hours ago
₹56,354
Return
found 6 hours ago
Select Lufthansa flight, departing Sun, 2 Nov from Seattle to London, returning Tue, 18 Nov, priced at ₹56,354 found 6 hours ago

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

October is typically the cheapest month to fly

From ₹42,459 - ₹91,838 per traveller.

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city centre is 28 minutes. Flights from ₹55,708
LHR
Heathrow
Cheapest
Average driving time to city centre28 min
Flights from ₹55,708

Frequently asked questions

How much is a flight from Sea-Tac Airport to Heathrow Airport (LHR)?
If you're travelling between SEA and London Heathrow, round-trip journeys start from ₹51,318. This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don't delay. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Heathrow Airport?
The majority of flights can be cancelled online, but whether you are charged a fee all comes down to your airline. If you do need to cancel your trip, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to LHR 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 Seattle - Tacoma Intl. Airport (SEA) to London Heathrow flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Seattle - Tacoma Intl. Airport (SEA) to Heathrow Airport?
With a flight distance of 7,700 kilometres between Sea-Tac Airport and Heathrow Airport (LHR), this is a long trip. Be sure to drink plenty of water and go for a short walk down the aisle every now and then.
Which airlines fly direct from SEA to Heathrow Airport (LHR)?
It's easy to fly directly from Sea-Tac Airport to Heathrow Airport. Below are the most sought-after carriers that offer nonstop services on this route:

  • 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 SEA to LHR flight tickets cheaper when they're purchased at the last minute?
Flight prices are constantly going up and down, so there are no guarantees. While last-minute deals between Seattle - Tacoma Intl. Airport (SEA) and Heathrow Airport are of course possible, it's also a good idea to keep track of prices well before you fly. In fact, some airlines announce their prices up to a year prior to the departure date. Expedia is constantly updating the best bargains around, so keep checking back and be ready to lock in your seat when the price dips.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, Turkish Airlines, United, Virgin Atlantic
Return price
₹51,318
Distance
7657 km
Average flight time
16 hours 35 mins

Book with confidence

Seattle to London 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 Seattle to London 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 London.

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 SEA to LHR flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle 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 LHR 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.

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