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Cheap flights from the United Kingdom to Washington from $410

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Washington departing on 6/7. 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 the United Kingdom to Washington

Recent round-trip flight deals from the United Kingdom to Washington

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:25 am - 5:10 pm
MAN
-
SEA
15h 45m
1 stop
Multiple Airlines Logo
7:10 pm - 5:25 pm
SEA
-
MAN
14h 15m
1 stop
$691Multiple Airlines
Tue, Jun 23 - Tue, Jun 30
Multiple Airlines Logo
6:15 am - 5:10 pm
MAN
-
SEA
18h 55m
1 stop
Multiple Airlines Logo
7:10 pm - 4:45 pm
SEA
-
MAN
13h 35m
1 stop
$695Multiple Airlines
Fri, Jun 19 - Fri, Jun 26
Virgin Atlantic Logo
6:20 am - 11:25 am
LHR
-
SEA
13h 05m
1 stop
Virgin Atlantic Logo
4:48 pm - 10:30 am
SEA
-
LHR
9h 42mnonstop
$710Virgin Atlantic
Thu, Nov 12 - Mon, Nov 23
Icelandair Logo
1:05 pm - 8:40 pm
LHR
-
SEA
15h 35m
1 stop
Icelandair Logo
7:00 pm - 8:20 pm
SEA
-
LHR
17h 20m
1 stop
$712Icelandair
Tue, Sep 22 - Tue, Oct 13
Icelandair Logo
9:25 pm - 8:40 pm
LHR
-
SEA
31h 15m
1 stop
Icelandair Logo
7:00 pm - 8:20 pm
SEA
-
LHR
17h 20m
1 stop
$715Icelandair
Sat, Sep 26 - Thu, Oct 22
Scandinavian Airlines Logo
7:10 pm - 1:45 pm
EDI
-
SEA
26h 35m
1 stop
Scandinavian Airlines Logo
3:55 pm - 6:25 pm
SEA
-
EDI
18h 30m
1 stop
$752Scandinavian Airlines
Sat, Sep 5 - Sat, Sep 12
Scandinavian Airlines Logo
6:50 pm - 1:45 pm
EDI
-
SEA
26h 55m
2 stops
Scandinavian Airlines Logo
3:55 pm - 6:25 pm
SEA
-
EDI
18h 30m
1 stop
$781Scandinavian Airlines
Sat, Sep 5 - Sat, Sep 12
Virgin Atlantic Logo
8:05 pm - 11:47 am
LCY
-
SEA
23h 42m
1 stop
Virgin Atlantic Logo
6:00 am - 9:30 am
SEA
-
LCY
19h 30m
2 stops
$797Virgin Atlantic
Fri, Nov 13 - Thu, Nov 19
Delta Logo
12:10 pm - 4:24 pm
LCY
-
SEA
12h 14m
1 stop
Delta Logo
5:45 pm - 4:40 pm
SEA
-
LCY
14h 55m
1 stop
$819Delta
Sat, Jun 20 - Mon, Jun 29
Delta Logo
10:00 am - 4:24 pm
LCY
-
SEA
14h 24m
1 stop
Delta Logo
1:55 pm - 9:30 am
SEA
-
LCY
11h 35m
1 stop
$831Delta
Thu, Jun 18 - Mon, Jun 29

KLM flights from United Kingdom to State of Washington

Our best KLM deals on United Kingdom to State of Washington flight tickets
KLM
Nov 13
LHR6:30 amLondon Heathrow
16h 17m
2 stops
SEA2:47 pmSeattle/Tacoma Intl
Nov 19
SEA11:45 amSeattle/Tacoma Intl
13h 00m
1 stop
LHR8:45 amLondon Heathrow
$763
KLM
Jun 24
LCY10:00 amLondon City
14h 24m
1 stop
SEA4:24 pmSeattle/Tacoma Intl
Jun 29
SEA1:55 pmSeattle/Tacoma Intl
11h 35m
1 stop
LCY9:30 amLondon City
$821
KLM
Oct 15
LCY9:20 amLondon City
15h 19m
1 stop
SEA4:39 pmSeattle/Tacoma Intl
Nov 1
SEA2:35 pmSeattle/Tacoma Intl
18h 00m
1 stop
LCY4:35 pmLondon City
$822

Icelandair flights from United Kingdom to State of Washington

Our best Icelandair deals on United Kingdom to State of Washington flight tickets
Icelandair
Sep 22
LHR1:05 pmLondon Heathrow
15h 35m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 13
SEA7:00 pmSeattle/Tacoma Intl
17h 20m
1 stop
LHR8:20 pmLondon Heathrow
$712
Icelandair
Sep 26
LHR9:25 pmLondon Heathrow
31h 15m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 22
SEA7:00 pmSeattle/Tacoma Intl
17h 20m
1 stop
LHR8:20 pmLondon Heathrow
$715
Icelandair
Jun 21
LGW1:00 pmLondon Gatwick
30h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Jul 5
SEA3:40 pmSeattle/Tacoma Intl
15h 00m
1 stop
LGW2:40 pmLondon Gatwick
$716

momondo Fare Finder

 
Customize your flight search to find flights from United Kingdom to State of Washington 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 May 22, 2026.
Use the filters below to find and compare flights from the United Kingdom to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Tue 6/23

9:25 am-5:10 pm

1 stop15h 45m

Seattle/Tacoma Intl

Tue 6/30

7:10 pm-5:25 pm

1 stop14h 15m

$691

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Fri 6/19

6:15 am-5:10 pm

1 stop18h 55m

Seattle/Tacoma Intl

Fri 6/26

7:10 pm-4:45 pm

1 stop13h 35m

$695
Quickest round-trip

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 11/12

6:20 am-11:25 am

1 stop13h 05m

Seattle/Tacoma Intl

Mon 11/23

4:48 pm-10:30 am

Nonstop9h 42m

$710

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 9/22

1:05 pm-8:40 pm

1 stop15h 35m

Seattle/Tacoma Intl

Tue 10/13

7:00 pm-8:20 pm

1 stop17h 20m

$712

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 9/26

9:25 pm-8:40 pm

1 stop31h 15m

Seattle/Tacoma Intl

Thu 10/22

7:00 pm-8:20 pm

1 stop17h 20m

$715

EdinburghSeattle

EDI - SEA

EDISEA

Edinburgh Turnhouse

Sat 9/5

7:10 pm-1:45 pm

1 stop26h 35m

Seattle/Tacoma Intl

Sat 9/12

3:55 pm-6:25 pm

1 stop18h 30m

$752

EdinburghSeattle

EDI - SEA

EDISEA

Edinburgh Turnhouse

Sat 9/5

6:50 pm-1:45 pm

2 stops26h 55m

Seattle/Tacoma Intl

Sat 9/12

3:55 pm-6:25 pm

1 stop18h 30m

$781

LondonSeattle

LCY - SEA

LCYSEA

London City

Fri 11/13

8:05 pm-11:47 am

1 stop23h 42m

Seattle/Tacoma Intl

Thu 11/19

6:00 am-9:30 am

2 stops19h 30m

$797

LondonSeattle

LCY - SEA

LCYSEA

London City

Sat 6/20

12:10 pm-4:24 pm

1 stop12h 14m

Seattle/Tacoma Intl

Mon 6/29

5:45 pm-4:40 pm

1 stop14h 55m

$819

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 6/18

10:00 am-4:24 pm

1 stop14h 24m

Seattle/Tacoma Intl

Mon 6/29

1:55 pm-9:30 am

1 stop11h 35m

$831

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 Washington from

How to get the cheapest flight ticket from United Kingdom to State of Washington

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 State of Washington?

The month of February is, on average, the cheapest month to fly to State of Washington from United Kingdom, with most prices found around $390. If you aren’t able to travel to State of Washington during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $398.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from United Kingdom to State of Washington is on a Monday. Travelers who choose to depart for State of Washington on a Monday will often find tickets for as low as $841. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to State of Washington for around $947.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is at noon when flights can be purchased for as low as $855. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $905 on average. Flights to State of Washington from United Kingdom in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest United Kingdom to Washington flight route?

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

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

You are more likely to see cheaper flights to State of Washington from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $783 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from United Kingdom for as low as $703 on momondo.

What cabin class options are available on United Kingdom to State of Washington flights?

There are 4 cabin classes available to choose from on United Kingdom to State of Washington 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 United Kingdom to State of Washington flights?

You could potentially save up to 17% on your flight if you consider stops on a United Kingdom to State of Washington flight.

Cheap United Kingdom to State of Washington flight deals and tips

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

Best Price Found

$717

Fastest flight time

9h 45m

Direct flights

Every day

Airports in State of Washington

96 airports
The best one-way flight to State of Washington from United Kingdom in the past 72 hours is $717. The best round-trip flight deal from United Kingdom to State of Washington found on momondo in the last 72 hours is $881.
The fastest flight from United Kingdom to State of Washington takes 9h 45m
Direct flights go from United Kingdom to State of Washington every day.
There are 96 airports in State of Washington. From United Kingdom there are direct flights to Portland (PDX), Seattle/Tacoma Intl (SEA).
Search flight deals

Frequently asked questions about flying from the United Kingdom to Washington

  • When did momondo last update prices for flights from United Kingdom to Washington?

    Prices for flights from United Kingdom to Washington are updated daily.

  • How many operators does momondo search for flights from United Kingdom to Washington?

  • How old do you have to be to fly from United Kingdom to Washington?

    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 United Kingdom to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from United Kingdom to State of Washington?

Best airlines flying from United Kingdom to State of Washington

Compare and see reviews for airlines that fly from United Kingdom to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $403Free CancellationRating
7.0
657 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom $574Free CancellationRating
7.5
689 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $600Free CancellationRating
7.9
8,445 reviews
Search Delta flights
American AirlinesPriceFrom $618Free CancellationRating
7.1
11,645 reviews
Search American Airlines flights
British AirwaysPriceFrom $660Free CancellationRating
6.7
7,995 reviews
Search British Airways flights
Air FrancePriceFrom $780Free CancellationRating
7.4
1,590 reviews
Search Air France flights
Scandinavian AirlinesPriceFrom $981Free CancellationRating
7.4
1,784 reviews
Search Scandinavian Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from United Kingdom to Washington for you.

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

Yes. All flights to Washington from United Kingdom on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from United Kingdom.

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

Price alerts on flights to Washington from United Kingdom 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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