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Cheap flights from Seattle to the United Kingdom from $207

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to the United Kingdom departing on 5/19. 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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0 bags

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Find the cheapest flights from Seattle to the United Kingdom

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 pm - 10:00 am
SEA
-
EDI
11h 25m1 stop
Icelandair Logo
12:20 pm - 5:00 pm
EDI
-
SEA
12h 40m1 stop
$491Icelandair
Mon, Feb 2 - Fri, Feb 6
Icelandair Logo
2:35 pm - 9:55 am
SEA
-
GLA
11h 20m1 stop
Icelandair Logo
12:35 pm - 5:00 pm
GLA
-
SEA
12h 25m1 stop
$492Icelandair
Tue, Feb 3 - Wed, Feb 11
Icelandair Logo
2:35 pm - 9:55 am
SEA
-
GLA
11h 20m1 stop
Icelandair Logo
12:35 pm - 5:00 pm
GLA
-
SEA
12h 25m1 stop
$493Icelandair
Sat, Jan 24 - Tue, Feb 17
British Airways Logo
5:45 pm - 6:35 pm
SEA
-
EDI
16h 50m2 stops
British Airways Logo
2:15 pm - 2:36 pm
EDI
-
SEA
32h 21m2 stops
$546British Airways
Wed, Feb 4 - Wed, Feb 11
British Airways Logo
6:50 pm - 3:10 pm
SEA
-
EDI
12h 20m1 stop
British Airways Logo
9:35 am - 6:20 pm
EDI
-
SEA
16h 45m1 stop
$547British Airways
Wed, Feb 18 - Wed, Feb 25
Virgin Atlantic Logo
8:00 am - 9:30 am
SEA
-
BHX
17h 30m2 stops
Virgin Atlantic Logo
8:45 pm - 11:35 am
BHX
-
SEA
22h 50m1 stop
$617Virgin Atlantic
Wed, Feb 25 - Sun, Mar 1
Delta Logo
8:30 am - 10:20 am
SEA
-
NCL
17h 50m2 stops
Delta Logo
6:05 am - 1:20 pm
NCL
-
SEA
15h 15m1 stop
$620Delta
Fri, Feb 20 - Fri, Feb 27
Virgin Atlantic Logo
1:30 pm - 9:30 am
SEA
-
BHX
12h 00m1 stop
Virgin Atlantic Logo
5:55 am - 4:35 pm
BHX
-
SEA
18h 40m1 stop
$624Virgin Atlantic
Tue, Apr 14 - Tue, Sep 22
Delta Logo
11:11 am - 1:40 pm
SEA
-
BHX
18h 29m2 stops
Delta Logo
5:55 am - 4:35 pm
BHX
-
SEA
18h 40m1 stop
$629Delta
Tue, Apr 14 - Wed, Sep 23
Aer Lingus Logo
8:05 pm - 4:25 pm
SEA
-
BHX
12h 20m1 stop
Aer Lingus Logo
1:20 pm - 6:20 pm
BHX
-
SEA
13h 00m1 stop
$698Aer Lingus
Sun, Mar 1 - Fri, Mar 6

Lufthansa flights from Seattle to United Kingdom

Our best Lufthansa deals on Seattle to United Kingdom flight tickets
Lufthansa
Jan 20
SEA9:55 amSeattle/Tacoma Intl
16h 15m
2 stops
LHR10:10 amLondon Heathrow
Jan 28
LHR6:35 amLondon Heathrow
14h 45m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$556
Lufthansa
Jan 20
SEA9:55 amSeattle/Tacoma Intl
16h 15m
2 stops
LHR10:10 amLondon Heathrow
Jan 28
LHR6:35 amLondon Heathrow
14h 45m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$557
Lufthansa
Feb 1
SEA10:05 amSeattle/Tacoma Intl
17h 45m
1 stop
LHR11:50 amLondon Heathrow
Feb 10
LHR6:35 amLondon Heathrow
20h 41m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$561

United Airlines flights from Seattle to United Kingdom

Our best United Airlines deals on Seattle to United Kingdom flight tickets
United Airlines
Jan 13
SEA8:10 amSeattle/Tacoma Intl
39h 20m
2 stops
LHR7:30 amLondon Heathrow
Jan 20
LHR2:30 pmLondon Heathrow
26h 45m
1 stop
SEA9:15 amSeattle/Tacoma Intl
$593
United Airlines
Jan 18
SEA9:25 amSeattle/Tacoma Intl
14h 00m
1 stop
LHR7:25 amLondon Heathrow
Feb 3
LHR10:00 amLondon Heathrow
38h 01m
2 stops
SEA4:01 pmSeattle/Tacoma Intl
$601
United Airlines
Jan 19
SEA9:55 amSeattle/Tacoma Intl
17h 55m
1 stop
LHR11:50 amLondon Heathrow
Feb 2
LHR1:50 pmLondon Heathrow
36h 36m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
$603

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to United Kingdom that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Seattle to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Mon 2/2

2:35 pm-10:00 am

1 stop11h 25m

Edinburgh Turnhouse

Fri 2/6

12:20 pm-5:00 pm

1 stop12h 40m

$491

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 2/3

2:35 pm-9:55 am

1 stop11h 20m

Glasgow Intl

Wed 2/11

12:35 pm-5:00 pm

1 stop12h 25m

$492

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sat 1/24

2:35 pm-9:55 am

1 stop11h 20m

Glasgow Intl

Tue 2/17

12:35 pm-5:00 pm

1 stop12h 25m

$493

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Wed 2/4

5:45 pm-6:35 pm

2 stops16h 50m

Edinburgh Turnhouse

Wed 2/11

2:15 pm-2:36 pm

2 stops32h 21m

$546

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Wed 2/18

6:50 pm-3:10 pm

1 stop12h 20m

Edinburgh Turnhouse

Wed 2/25

9:35 am-6:20 pm

1 stop16h 45m

$547

SeattleBirmingham

SEA - BHX

SEABHX

Seattle/Tacoma Intl

Wed 2/25

8:00 am-9:30 am

2 stops17h 30m

Birmingham

Sun 3/1

8:45 pm-11:35 am

1 stop22h 50m

$617

SeattleNewcastle upon Tyne

SEA - NCL

SEANCL

Seattle/Tacoma Intl

Fri 2/20

8:30 am-10:20 am

2 stops17h 50m

Newcastle upon Tyne

Fri 2/27

6:05 am-1:20 pm

1 stop15h 15m

$620

SeattleBirmingham

SEA - BHX

SEABHX

Seattle/Tacoma Intl

Tue 4/14

1:30 pm-9:30 am

1 stop12h 00m

Birmingham

Tue 9/22

5:55 am-4:35 pm

1 stop18h 40m

$624

SeattleBirmingham

SEA - BHX

SEABHX

Seattle/Tacoma Intl

Tue 4/14

11:11 am-1:40 pm

2 stops18h 29m

Birmingham

Wed 9/23

5:55 am-4:35 pm

1 stop18h 40m

$629

SeattleBirmingham

SEA - BHX

SEABHX

Seattle/Tacoma Intl

Sun 3/1

8:05 pm-4:25 pm

1 stop12h 20m

Birmingham

Fri 3/6

1:20 pm-6:20 pm

1 stop13h 00m

$698

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Seattle to United Kingdom

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 to United Kingdom?

In general, January is the cheapest month to fly from Seattle to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $641. If you aren’t able to travel to United Kingdom during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $644.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Seattle to United Kingdom is on a Wednesday when prices can be found for as low as $782. The most expensive day to fly to United Kingdom is Friday, with ticket prices averaging around $877.

What is the cheapest time of day to depart on your flight to United Kingdom?

According to our data, the cheapest time of day to fly to United Kingdom is in the evening. momondo users have found flights departing from Seattle to United Kingdom in the evening for as low as $827. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the afternoon, with an average ticket price of $840. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Seattle/Tacoma Intl to United Kingdom flight route?

Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle/Tacoma Intl - United Kingdom flight prices

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $782 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Seattle for as low as $682 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to United Kingdom flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to United Kingdom 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 Seattle to United Kingdom flights?

You could potentially save up to 20% on your flight if you consider stops on a Seattle to United Kingdom flight.

Cheap Seattle to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to United Kingdom

Best Price Found

$388

Fastest flight time

9h 15m

Direct flights

Every day

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from Seattle in the past 72 hours is $388. The best round-trip flight deal from Seattle to United Kingdom found on momondo in the last 72 hours is $622.
The fastest flight from Seattle to United Kingdom takes 9h 15m
Direct flights go from Seattle to United Kingdom every day.
There are 1,286 airports in United Kingdom. From Seattle there are direct flights to London Heathrow (LHR).
Search flight deals

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

    Prices for flights from Seattle/Tacoma Intl Airport to United Kingdom refresh daily.

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

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

    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 Seattle/Tacoma Intl Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The necessary travel and health documents for your United Kingdom 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 Seattle to United Kingdom?

Best airlines flying from Seattle to United Kingdom

Compare and see reviews for airlines that fly from Seattle to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $213Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
Scandinavian AirlinesPriceFrom $465Free CancellationRating
7.3
1,635 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $481Free CancellationRating
7.1
593 reviews
Search Icelandair flights
Aer LingusPriceFrom $500Free CancellationRating
7.2
1,427 reviews
Search Aer Lingus flights
American AirlinesPriceFrom $517Free CancellationRating
7.2
11,095 reviews
Search American Airlines flights
Air FrancePriceFrom $532Free CancellationRating
7.4
1,519 reviews
Search Air France flights
British AirwaysPriceFrom $543Free CancellationRating
6.7
7,657 reviews
Search British Airways flights
United AirlinesPriceFrom $547Free CancellationRating
7.4
9,139 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom $552Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
Alaska AirlinesPriceFrom $553Free CancellationRating
8.0
11,661 reviews
Search Alaska Airlines flights

Why use momondo?

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

It is quick and easy to find Seattle to United Kingdom 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 United Kingdom that suits you.

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

All flight searches from Seattle to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to United Kingdom?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to United Kingdom.

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

If you are not ready to book a flight from Seattle to United Kingdom now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to United Kingdom and let you know when they change.

An easier way to manage your United Kingdom trip

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Find better results for your trip to the United Kingdom

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom $345
Flights to Manchesterfrom $389
Flights to Edinburghfrom $368
Flights to Birminghamfrom $374
Flights to Glasgowfrom $392
Flights to Newcastle upon Tynefrom $463
Flights to Belfastfrom $482
Flights to Bristolfrom $416
Flights to Invernessfrom $387
Flights to Liverpoolfrom $438
Flights to Aberdeenfrom $491
Flights to Leedsfrom $429