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Cheap flights from the United Kingdom to Washington from $310

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 4/15. 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 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
10:35 pm - 7:25 pm
MAN
-
SEA
28h 50m
2 stops
Multiple Airlines Logo
3:40 pm - 11:40 am
SEA
-
MAN
12h 00m
1 stop
$498Multiple Airlines
Mon, Apr 13 - Mon, Apr 27
Multiple Airlines Logo
10:45 pm - 9:35 am
STN
-
SEA
42h 50m
3 stops
Multiple Airlines Logo
3:40 pm - 7:15 pm
SEA
-
STN
19h 35m
2 stops
$498Multiple Airlines
Mon, Apr 13 - Mon, Apr 27
Multiple Airlines Logo
10:35 pm - 7:25 pm
MAN
-
SEA
28h 50m
2 stops
Multiple Airlines Logo
3:40 pm - 11:40 am
SEA
-
MAN
12h 00m
1 stop
$499Multiple Airlines
Mon, Apr 13 - Sun, Apr 26
Icelandair Logo
11:55 am - 5:00 pm
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
3:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
$571Icelandair
Thu, Mar 5 - Tue, Mar 10
Icelandair Logo
11:55 am - 5:00 pm
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
3:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
$572Icelandair
Thu, Mar 5 - Tue, Mar 10
Air Canada Logo
3:05 pm - 9:10 am
LHR
-
PDX
26h 05m
1 stop
Air Canada Logo
7:15 am - 1:20 pm
PDX
-
LHR
46h 05m
2 stops
$727Air Canada
Tue, Apr 14 - Sat, Apr 18
Air Canada Logo
3:00 pm - 9:10 am
LHR
-
PDX
26h 10m
1 stop
Air Canada Logo
7:45 pm - 1:20 pm
PDX
-
LHR
33h 35m
2 stops
$750Air Canada
Thu, Apr 16 - Sat, May 2
Lufthansa Logo
6:15 pm - 1:10 pm
LCY
-
SEA
25h 55m
1 stop
Lufthansa Logo
2:10 pm - 5:55 pm
SEA
-
LCY
19h 45m
1 stop
$792Lufthansa
Mon, Mar 16 - Tue, Apr 28
Virgin Atlantic Logo
9:20 am - 10:10 pm
LCY
-
PDX
19h 50m
2 stops
Virgin Atlantic Logo
2:25 pm - 9:30 am
PDX
-
LCY
12h 05m
1 stop
$893Virgin Atlantic
Wed, Mar 18 - Wed, Mar 25
Virgin Atlantic Logo
5:10 pm - 11:10 am
LCY
-
PDX
26h 00m
1 stop
Virgin Atlantic Logo
1:05 pm - 8:50 am
PDX
-
LCY
11h 45m
1 stop
$896Virgin Atlantic
Mon, Apr 13 - Mon, Apr 27

Icelandair flights from United Kingdom to State of Washington

Our best Icelandair deals on United Kingdom to State of Washington flight tickets
Icelandair
Mar 5
LGW11:55 amLondon Gatwick
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Mar 10
SEA3:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
LGW10:55 amLondon Gatwick
$571
Icelandair
Mar 5
LGW11:55 amLondon Gatwick
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Mar 10
SEA3:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
LGW10:55 amLondon Gatwick
$572
Icelandair
Mar 5
LHR12:15 pmLondon Heathrow
12h 45m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Mar 10
SEA3:35 pmSeattle/Tacoma Intl
12h 15m
1 stop
LHR10:50 amLondon Heathrow
$574

Scandinavian Airlines flights from United Kingdom to State of Washington

Our best Scandinavian Airlines deals on United Kingdom to State of Washington flight tickets
Scandinavian Airlines
May 22
LHR7:05 amLondon Heathrow
38h 40m
2 stops
SEA1:45 pmSeattle/Tacoma Intl
May 26
SEA3:55 pmSeattle/Tacoma Intl
17h 45m
1 stop
LHR5:40 pmLondon Heathrow
$603
Scandinavian Airlines
May 22
LHR5:00 pmLondon Heathrow
28h 45m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
May 26
SEA3:55 pmSeattle/Tacoma Intl
17h 45m
1 stop
LHR5:40 pmLondon Heathrow
$604
Scandinavian Airlines
May 22
LHR5:00 pmLondon Heathrow
28h 45m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
May 31
SEA3:55 pmSeattle/Tacoma Intl
17h 45m
1 stop
LHR5:40 pmLondon Heathrow
$607

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 February 21, 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

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Mon 4/13

10:35 pm-7:25 pm

2 stops28h 50m

Seattle/Tacoma Intl

Mon 4/27

3:40 pm-11:40 am

1 stop12h 00m

$498

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 4/13

10:45 pm-9:35 am

3 stops42h 50m

Seattle/Tacoma Intl

Mon 4/27

3:40 pm-7:15 pm

2 stops19h 35m

$498

ManchesterSeattle

MAN - SEA

MANSEA

Manchester

Mon 4/13

10:35 pm-7:25 pm

2 stops28h 50m

Seattle/Tacoma Intl

Sun 4/26

3:40 pm-11:40 am

1 stop12h 00m

$499

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 3/5

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 3/10

3:35 pm-10:55 am

1 stop12h 20m

$571

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 3/5

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 3/10

3:35 pm-10:55 am

1 stop12h 20m

$572

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 4/14

3:05 pm-9:10 am

1 stop26h 05m

Portland

Sat 4/18

7:15 am-1:20 pm

2 stops46h 05m

$727

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 4/16

3:00 pm-9:10 am

1 stop26h 10m

Portland

Sat 5/2

7:45 pm-1:20 pm

2 stops33h 35m

$750

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 3/16

6:15 pm-1:10 pm

1 stop25h 55m

Seattle/Tacoma Intl

Tue 4/28

2:10 pm-5:55 pm

1 stop19h 45m

$792

LondonPortland

LCY - PDX

LCYPDX

London City

Wed 3/18

9:20 am-10:10 pm

2 stops19h 50m

Portland

Wed 3/25

2:25 pm-9:30 am

1 stop12h 05m

$893

LondonPortland

LCY - PDX

LCYPDX

London City

Mon 4/13

5:10 pm-11:10 am

1 stop26h 00m

Portland

Mon 4/27

1:05 pm-8:50 am

1 stop11h 45m

$896

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 $650. 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 $667.

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 Wednesday. Travelers who choose to depart for State of Washington on a Wednesday will often find tickets for as low as $764. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to State of Washington for around $1,033.

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 in the afternoon when flights can be purchased for as low as $823. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $860 on average. Flights to State of Washington from United Kingdom in the morning 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 to State of 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 $764 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 $713 on momondo.

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

There are 4 cabin classes available to choose from on United Kingdom to 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 31% 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

$598

Fastest flight time

9h 45m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

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 $598. The best round-trip flight deal from United Kingdom to State of Washington found on momondo in the last 72 hours is $622.
The fastest flight from United Kingdom to State of Washington takes 9h 45m
Direct flights go from United Kingdom to State of Washington on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There are 96 airports in State of Washington. From United Kingdom there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

  • 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 $501Free CancellationRating
7.1
617 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom $574Free CancellationRating
7.5
679 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $594Free CancellationRating
7.9
8,241 reviews
Search Delta flights
American AirlinesPriceFrom $618Free CancellationRating
7.2
11,336 reviews
Search American Airlines flights
British AirwaysPriceFrom $660Free CancellationRating
6.7
7,757 reviews
Search British Airways flights
Air FrancePriceFrom $780Free CancellationRating
7.4
1,535 reviews
Search Air France 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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