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Cheap flights from London Heathrow Airport to Seattle from $288

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Seattle departing on 4/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Seattle

Cheap round-trip flights

These are some of the best round-trip flight deals from London Heathrow Airport to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from London Heathrow Airport to Seattle.

Cheap last minute flights

Planning a quick getaway from London Heathrow Airport to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from London Heathrow Airport to Seattle

Find recent round-trip train or bus tickets from London Heathrow Airport to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
2:50 pm - 2:21 pmLHR-SEA
31h 31m1 stop
2:35 pm - 10:50 amSEA-LHR
12h 15m1 stop
Mon, Jan 20 - Sun, Jan 26
12:15 pm - 5:00 pmLHR-SEA
12h 45m1 stop
2:35 pm - 7:30 pmSEA-LHR
20h 55m1 stop
$571Icelandair
Find Deal
Tue, Jan 28 - Tue, Feb 25
1:15 pm - 3:15 pmLHR-SEA
10h 00mnonstop
8:50 am - 7:05 amSEA-LHR
14h 15m1 stop
$671Virgin Atlantic
Find Deal
Mon, Dec 9 - Mon, Dec 16
3:50 pm - 6:30 pmLHR-SEA
10h 40mnonstop
1:35 pm - 10:00 amSEA-LHR
12h 25m1 stop
$678Virgin Atlantic
Find Deal
Wed, Dec 4 - Wed, Dec 11
10:00 am - 11:52 amLHR-SEA
33h 52m1 stop
5:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$685Delta
Find Deal
Mon, Dec 9 - Tue, Dec 24
11:45 am - 11:52 amLHR-SEA
32h 07m1 stop
5:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$687Delta
Find Deal
Mon, Dec 9 - Tue, Dec 24
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
1:35 pm - 11:40 amSEA-LHR
14h 05m1 stop
$695British Airways
Find Deal
Mon, Dec 9 - Tue, Jan 21
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
1:35 pm - 11:40 amSEA-LHR
14h 05m1 stop
$699British Airways
Find Deal
Wed, Dec 11 - Mon, Jan 20
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
7:14 am - 6:20 amSEA-LHR
15h 06m1 stop
$709Iberia
Find Deal
Tue, Dec 10 - Wed, Jan 22
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
1:59 pm - 12:05 pmSEA-LHR
14h 06m1 stop
$749Iberia
Find Deal
Mon, Dec 9 - Sat, Jan 18
6:55 am - 12:56 pmLHR-SEA
38h 01m2 stops
Wed, Apr 30
7:40 am - 8:21 pmLHR-SEA
20h 41m2 stops
Fri, May 2
2:50 pm - 2:21 pmLHR-SEA
31h 31m1 stop
$362WestJet
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Mon, Jan 20
2:50 pm - 2:21 pmLHR-SEA
31h 31m1 stop
$374WestJet
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Sat, Feb 1
12:15 pm - 5:00 pmLHR-SEA
12h 45m1 stop
$469Icelandair
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Tue, Dec 10
8:40 pm - 5:00 pmLHR-SEA
28h 20m1 stop
$470Icelandair
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Tue, Dec 3
8:50 am - 6:15 pmLHR-SEA
17h 25m1 stop
$522Aer Lingus
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Mon, Dec 9
7:50 am - 6:15 pmLHR-SEA
18h 25m1 stop
$539Aer Lingus
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Mon, Nov 18
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
$702Iberia
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Tue, Nov 26
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
$729British Airways
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Mon, Nov 25
12:15 pm - 5:00 pmLHR-SEA
12h 45m1 stop
2:35 pm - 10:50 amSEA-LHR
12h 15m1 stop
$728Icelandair
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Fri, Nov 8 - Mon, Dec 9
12:15 pm - 5:00 pmLHR-SEA
12h 45m1 stop
2:35 pm - 10:50 amSEA-LHR
12h 15m1 stop
$731Icelandair
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Fri, Nov 8 - Thu, Dec 5
6:40 am - 10:21 pmLHR-SEA
23h 41m2 stops
11:35 am - 4:00 pmSEA-LHR
20h 25m2 stops
$746Scandinavian Airlines
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Fri, Nov 8 - Fri, Dec 6
1:05 pm - 3:05 pmLHR-SEA
10h 00mnonstop
5:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$882Delta
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Sat, Nov 9 - Sat, Dec 7
6:30 am - 11:40 amLHR-SEA
13h 10m1 stop
5:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$896Delta
Find Deal
Thu, Nov 7 - Mon, Dec 9
1:05 pm - 3:05 pmLHR-SEA
10h 00mnonstop
7:25 pm - 1:10 pmSEA-LHR
9h 45mnonstop
$926Virgin Atlantic
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Sat, Nov 9 - Fri, Nov 29
9:10 am - 5:00 pmLHR-SEA
15h 50m1 stop
5:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$931Virgin Atlantic
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Sat, Nov 9 - Fri, Nov 29
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
6:50 pm - 12:15 pmSEA-LHR
9h 25mnonstop
$17,656British Airways
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Thu, Nov 7 - Mon, Dec 9
10:40 am - 7:35 pmLHR-SEA
16h 55m1 stop
6:50 pm - 12:15 pmSEA-LHR
9h 25mnonstop
$17,665British Airways
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Thu, Nov 7 - Mon, Dec 9
10:40 am - 7:35 pmLHR-SEA
16h 55m1 stop
7:20 am - 6:20 amSEA-LHR
15h 00m1 stop
$18,440American Airlines
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Thu, Nov 7 - Mon, Dec 9
3:50 pm - 7:10 pmLHR-SEA
10h 20mnonstop
7:55 pm - 12:40 pmSEA-LHR
9h 45mnonstop
$653KLM
Find Deal
Wed, Mar 12 - Wed, Mar 26
1:15 pm - 3:15 pmLHR-SEA
10h 00mnonstop
7:55 pm - 1:30 pmSEA-LHR
9h 35mnonstop
$654Air France
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Mon, Feb 3 - Tue, May 6
1:15 pm - 3:15 pmLHR-SEA
10h 00mnonstop
5:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$664Virgin Atlantic
Find Deal
Tue, Dec 3 - Tue, Dec 10
1:15 pm - 3:15 pmLHR-SEA
10h 00mnonstop
5:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$669Virgin Atlantic
Find Deal
Mon, Dec 9 - Tue, Dec 24
1:15 pm - 4:15 pmLHR-SEA
10h 00mnonstop
6:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$687Delta
Find Deal
Wed, Mar 12 - Mon, Mar 17
1:15 pm - 3:15 pmLHR-SEA
10h 00mnonstop
5:45 pm - 11:10 amSEA-LHR
9h 25mnonstop
$701Delta
Find Deal
Mon, Dec 9 - Tue, Dec 24
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
1:35 pm - 7:00 amSEA-LHR
9h 25mnonstop
$716American Airlines
Find Deal
Tue, Jan 28 - Tue, Feb 25
3:00 pm - 5:55 pmLHR-SEA
9h 55mnonstop
7:50 pm - 12:15 pmSEA-LHR
9h 25mnonstop
$726British Airways
Find Deal
Sun, Mar 9 - Tue, Mar 18
9:45 am - 11:30 amLHR-SEA
9h 45mnonstop
7:40 pm - 1:00 pmSEA-LHR
9h 20mnonstop
$729British Airways
Find Deal
Thu, May 1 - Mon, May 5
3:00 pm - 4:55 pmLHR-SEA
9h 55mnonstop
1:35 pm - 7:00 amSEA-LHR
9h 25mnonstop
$743American Airlines
Find Deal
Mon, Dec 9 - Tue, Dec 24

KLM flights from London Heathrow Airport to Seattle

Our best KLM deals on London Heathrow Airport to Seattle flight tickets
KLM
Mar 12
LHR6:30 amLondon Heathrow
13h 10m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
Mar 26
SEA7:55 pmSeattle/Tacoma Intl
9h 45m
LHR12:40 pmLondon Heathrow
KLM
Dec 4
LHR1:15 pmLondon Heathrow
10h 00m
SEA3:15 pmSeattle/Tacoma Intl
Dec 11
SEA5:45 pmSeattle/Tacoma Intl
9h 25m
LHR11:10 amLondon Heathrow
KLM
Mar 20
LHR6:30 amLondon Heathrow
13h 10m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
Mar 24
SEA6:05 pmSeattle/Tacoma Intl
9h 25m
LHR10:30 amLondon Heathrow

Air France flights from London Heathrow Airport to Seattle

Our best Air France deals on London Heathrow Airport to Seattle flight tickets
Air France
Feb 3
LHR1:15 pmLondon Heathrow
10h 00m
SEA3:15 pmSeattle/Tacoma Intl
May 6
SEA7:55 pmSeattle/Tacoma Intl
9h 35m
LHR1:30 pmLondon Heathrow
Air France
Dec 4
LHR1:15 pmLondon Heathrow
10h 00m
SEA3:15 pmSeattle/Tacoma Intl
Dec 12
SEA5:45 pmSeattle/Tacoma Intl
9h 25m
LHR11:10 amLondon Heathrow
Air France
Mar 20
LHR12:40 pmLondon Heathrow
10h 00m
SEA3:40 pmSeattle/Tacoma Intl
Mar 24
SEA6:45 pmSeattle/Tacoma Intl
9h 25m
LHR11:10 amLondon Heathrow

How to get the cheapest flight ticket from London Heathrow Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from London Heathrow Airport to Seattle?

January. The cheapest time of year to fly to Seattle from London Heathrow Airport is January. Most expensive is July

What is the cheapest day to depart London Heathrow Airport for Seattle?

Wednesday. The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday

When is the cheapest time to fly from London Heathrow Airport to Seattle?

At noon. London Heathrow Airport to Seattle flights are approximately 23% more expensive in the evening than at noon

What is the cheapest airline that flies to Seattle from London Heathrow Airport?

American Airlines. American Airlines, Virgin Atlantic, and Icelandair are the most popular carriers operating from London Heathrow Airport to Seattle

How far in advance should you book London Heathrow Airport to Seattle flights?

48 days before. The cheapest time to buy a flight from London Heathrow Airport to Seattle is approximately 48 days to departure

How many flights depart from London Heathrow Airport to Seattle on average per day?

As of November 2024, 12 flights take off from London Heathrow Airport and land in Seattle each day. The most common flight departure time for this route is 3:00PM, with 88% of daily flights taking off in the afternoon.

How many flights depart from London Heathrow Airport to Seattle on average per week?

84 flights are operational weekly from London Heathrow Airport to Seattle as of November 2024. The most popular departure day for this route is Sunday, with 19% of flights per week taking off on this day.

What cabin class options are available on London Heathrow Airport to Seattle flights?

There are 3 cabin classes available to choose from on London Heathrow Airport to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London Heathrow Airport to Seattle flights?

You could potentially save up to 25% on your flight if you consider stops on a London Heathrow Airport to Seattle flight.

How have London Heathrow Airport to Seattle flight prices changed over time?

As of November 2024, prices for London Heathrow Airport to Seattle flights are approximately 14% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Seattle (LHR to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Seattle

Best Price Found

$288

Fastest flight time

9h 45m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from London Heathrow Airport in the past 72 hours is $288. The best round-trip flight deal from London Heathrow Airport to Seattle found on momondo in the last 72 hours is $567.
The fastest flight from London Heathrow Airport to Seattle takes 9h 45m
Direct flights go from London Heathrow Airport to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is London Heathrow to Seattle/Tacoma Intl by plane?

    London Heathrow and Seattle/Tacoma Intl are 4774.1 mi apart from one another. Flights usually cover this in 9h 45m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Heathrow Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from London Heathrow Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from London Heathrow Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Seattle?

  • What is the most popular airline from London Heathrow Airport to Seattle?


Best airlines flying from London Heathrow Airport to Seattle

Compare and see reviews for airlines that fly from London Heathrow Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $505Free CancellationRating
7.2
578 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom $525Free CancellationRating
7.6
666 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $594Free CancellationRating
6.7
6,842 reviews
Search British Airways flights
DeltaPriceFrom $616Free CancellationRating
8.0
8,829 reviews
Search Delta flights
American AirlinesPriceFrom $621Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom $677Free CancellationRating
7.0
2,673 reviews
Search Iberia flights
Aer LingusPriceFrom $690Free CancellationRating
7.1
1,088 reviews
Search Aer Lingus flights
  • Delta Flights From London Heathrow Airport to Seattle

    Delta flies from London Heathrow Airport to Seattle around 8 times per week, with 8,829 momondo users rating the airline 8.0/10. The cheapest Delta deal from London Heathrow Airport to Seattle in the last 72 hours was $616 (round-trip), much lower than the average airfare cost of $832 for Delta flights on this route.

  • Virgin Atlantic Flights From London Heathrow Airport to Seattle

    Virgin Atlantic (7.6/10 from 666 reviews) operates around 8 flights from London Heathrow Airport to Seattle in any given week. The average Virgin Atlantic airfare for this route is around $794, with deals from around $525 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Seattle flight searches in the last 72 hours.


Why use momondo?

Why should I use momondo to find a flight deal from London to Seattle?

It is quick and easy to find London to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

Can I find flights from London to Seattle with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Seattle?

Once you have performed a search for London to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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