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Cheap flights from Washington to London from $333

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to London departing on 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:35 pm - 4:05 pm
SEA
-
LTN
17h 30m2 stops
Multiple Airlines Logo
6:00 am - 5:00 pm
LTN
-
SEA
19h 00m2 stops
$590Multiple Airlines
Sat, Jan 10 - Sat, Jan 17
Multiple Airlines Logo
8:05 pm - 11:05 pm
SEA
-
LTN
19h 00m1 stop
Multiple Airlines Logo
1:05 pm - 6:20 pm
LTN
-
SEA
13h 15m1 stop
$611Multiple Airlines
Wed, Feb 18 - Fri, Feb 27
Multiple Airlines Logo
9:05 pm - 11:05 pm
SEA
-
LTN
19h 00m1 stop
Multiple Airlines Logo
6:50 am - 7:20 pm
LTN
-
SEA
19h 30m1 stop
$625Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
3:35 pm - 8:05 pm
SEA
-
LTN
21h 30m2 stops
Multiple Airlines Logo
7:00 am - 6:00 pm
LTN
-
SEA
18h 00m2 stops
$634Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
6:45 pm - 3:25 pm
SEA
-
LTN
12h 40m1 stop
Multiple Airlines Logo
6:15 am - 4:59 pm
LTN
-
SEA
18h 44m1 stop
$640Multiple Airlines
Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
2:35 pm - 9:50 pm
SEA
-
LTN
23h 15m2 stops
Multiple Airlines Logo
7:20 am - 5:00 pm
LTN
-
SEA
17h 40m2 stops
$642Multiple Airlines
Mon, Jan 12 - Mon, Jan 26
Multiple Airlines Logo
2:45 pm - 9:15 pm
PDX
-
LTN
22h 30m2 stops
Multiple Airlines Logo
6:15 am - 6:00 pm
LTN
-
PDX
18h 45m2 stops
$648Multiple Airlines
Sat, Mar 7 - Fri, Mar 13
Multiple Airlines Logo
2:35 pm - 4:20 pm
SEA
-
LTN
17h 45m2 stops
Multiple Airlines Logo
6:15 am - 5:00 pm
LTN
-
SEA
18h 45m2 stops
$669Multiple Airlines
Sun, Feb 1 - Sat, Feb 7
Multiple Airlines Logo
2:35 pm - 4:20 pm
SEA
-
LTN
17h 45m2 stops
Multiple Airlines Logo
9:00 am - 5:00 pm
LTN
-
SEA
16h 00m2 stops
$671Multiple Airlines
Sun, Feb 1 - Tue, Feb 17
Multiple Airlines Logo
2:35 pm - 2:00 pm
SEA
-
LTN
15h 25m2 stops
Multiple Airlines Logo
7:05 am - 5:00 pm
LTN
-
SEA
17h 55m2 stops
$673Multiple Airlines
Fri, Jan 23 - Sun, Feb 1

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to London Luton Airport 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 December 15, 2025.
Use the filters below to find and compare flights from Washington to London Luton Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Sat 1/10

2:35 pm-4:05 pm

2 stops17h 30m

London Luton

Sat 1/17

6:00 am-5:00 pm

2 stops19h 00m

$590

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Wed 2/18

8:05 pm-11:05 pm

1 stop19h 00m

London Luton

Fri 2/27

1:05 pm-6:20 pm

1 stop13h 15m

$611

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Wed 3/11

9:05 pm-11:05 pm

1 stop19h 00m

London Luton

Wed 3/18

6:50 am-7:20 pm

1 stop19h 30m

$625

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Wed 3/11

3:35 pm-8:05 pm

2 stops21h 30m

London Luton

Wed 3/18

7:00 am-6:00 pm

2 stops18h 00m

$634

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Wed 4/15

6:45 pm-3:25 pm

1 stop12h 40m

London Luton

Wed 4/22

6:15 am-4:59 pm

1 stop18h 44m

$640

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Mon 1/12

2:35 pm-9:50 pm

2 stops23h 15m

London Luton

Mon 1/26

7:20 am-5:00 pm

2 stops17h 40m

$642

PortlandLondon

PDX - LTN

PDXLTN

Portland

Sat 3/7

2:45 pm-9:15 pm

2 stops22h 30m

London Luton

Fri 3/13

6:15 am-6:00 pm

2 stops18h 45m

$648

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Sun 2/1

2:35 pm-4:20 pm

2 stops17h 45m

London Luton

Sat 2/7

6:15 am-5:00 pm

2 stops18h 45m

$669

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Sun 2/1

2:35 pm-4:20 pm

2 stops17h 45m

London Luton

Tue 2/17

9:00 am-5:00 pm

2 stops16h 00m

$671

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Fri 1/23

2:35 pm-2:00 pm

2 stops15h 25m

London Luton

Sun 2/1

7:05 am-5:00 pm

2 stops17h 55m

$673

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from State of Washington to London Luton Airport

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

How long does it take to fly to London Luton Airport?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into London Luton Airport, then you can expect flight times to average 9h 25m and 12h 27m, respectively.

Cheap State of Washington to London Luton Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to London Luton Airport

Fastest flight time

12h 10m

Direct flights

None
The fastest flight from State of Washington to London Luton Airport takes 12h 10m
There are no direct flights from State of Washington to London Luton Airport. There are no popular flight routes from State of Washington to London Luton Airport.
Search flight deals

  • When did momondo last update prices for flights from Washington to London Luton Airport?

    Prices for flights from Washington to London Luton Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Washington to London Luton 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 Washington to London Luton Airport.

  • What documentation or ID do you need to fly to London Luton Airport?

    The travel and health documents you'll need for your trip to London Luton Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Luton Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Wembley
Watford
Ilford
Cobham
Folkestone
Romford
Richmond
Uxbridge
Stansted

Why use momondo?

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

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 Washington to London for you.

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

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

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

momondo helps you find the best flight between Washington and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Washington to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your London Luton Airport trip

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