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

Prices for flights from London Airport to Washington were last updated today.

How old do you have to be to fly from London Airport to Washington?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport 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.

$167 Cheap Flights from London to Washington in 2026

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Find the cheapest flights from London, Ontario to Washington

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:15 am - 6:45 pm

YXU

SEA

15h 30m

1 stop

7:35 pm - 5:25 am

SEA

YXU

6h 50m

1 stop

$255WestJet

dom, mai 24 - qui, mai 28

9:40 am - 7:16 pm

YXU

SEA

12h 36m

2 stops

5:40 am - 9:21 pm

SEA

YXU

12h 41m

2 stops

$396Air Canada

dom, mar 8 - qua, mar 11

8:10 pm - 2:19 pm

YXU

SEA

21h 09m

1 stop

11:55 am - 6:35 am

SEA

YXU

39h 40m

2 stops

$411WestJet

dom, mar 1 - dom, mar 8

5:40 pm - 10:16 pm

YXU

SEA

7h 36m

1 stop

8:00 pm - 8:46 am

SEA

YXU

9h 46m

2 stops

$415Air Canada

dom, mar 15 - seg, mar 16

8:10 pm - 8:57 am

YXU

SEA

15h 47m

2 stops

3:10 pm - 6:35 am

SEA

YXU

12h 25m

1 stop

$418Multiple Airlines

dom, mar 1 - dom, mar 8

2:35 pm - 9:40 am

YXU

SEA

22h 05m

2 stops

7:35 pm - 5:25 am

SEA

YXU

6h 50m

1 stop

$423WestJet

dom, mai 24 - qui, mai 28

5:40 pm - 10:16 pm

YXU

SEA

7h 36m

1 stop

8:00 am - 9:21 pm

SEA

YXU

10h 21m

1 stop

$433Air Canada

dom, mar 8 - qua, mar 11

5:40 pm - 10:16 pm

YXU

SEA

7h 36m

1 stop

8:00 am - 9:21 pm

SEA

YXU

10h 21m

1 stop

$434Air Canada

qua, mar 11 - sáb, mar 14

2:35 pm - 9:40 am

YXU

SEA

22h 05m

2 stops

10:30 am - 1:45 pm

SEA

YXU

24h 15m

2 stops

$442WestJet

dom, mai 24 - qui, mai 28

9:25 am - 12:38 pm

YXU

PDX

30h 13m

2 stops

3:50 pm - 9:21 pm

PDX

YXU

26h 31m

2 stops

$594United Airlines

seg, mar 2 - qua, mar 4

Air Canada flights from London, Ontario to State of Washington

Our best Air Canada deals on London, Ontario to State of Washington flight tickets

Air Canada

Mar 8

YXU5:40 pmLondon

7h 36m

1 stop

SEA10:16 pmSeattle/Tacoma Intl

Mar 11

SEA5:40 amSeattle/Tacoma Intl

12h 41m

2 stops

YXU9:21 pmLondon

$396

Air Canada

Mar 15

YXU5:40 pmLondon

7h 36m

1 stop

SEA10:16 pmSeattle/Tacoma Intl

Mar 16

SEA8:00 pmSeattle/Tacoma Intl

9h 46m

2 stops

YXU8:46 amLondon

$415

Air Canada

Mar 8

YXU5:40 pmLondon

7h 36m

1 stop

SEA10:16 pmSeattle/Tacoma Intl

Mar 11

SEA8:00 amSeattle/Tacoma Intl

10h 21m

1 stop

YXU9:21 pmLondon

$433

United Airlines flights from London, Ontario to State of Washington

Our best United Airlines deals on London, Ontario to State of Washington flight tickets

United Airlines

Mar 2

YXU9:25 amLondon

30h 13m

2 stops

PDX12:38 pmPortland

Mar 4

PDX3:50 pmPortland

26h 31m

2 stops

YXU9:21 pmLondon

$594

United Airlines

Mar 8

YXU5:10 amLondon

18h 48m

3 stops

SEA7:58 pmSeattle/Tacoma Intl

Mar 11

SEA8:00 amSeattle/Tacoma Intl

10h 21m

2 stops

YXU9:21 pmLondon

$1,114

United Airlines

Mar 8

YXU5:10 amLondon

18h 48m

3 stops

SEA7:58 pmSeattle/Tacoma Intl

Mar 11

SEA8:00 amSeattle/Tacoma Intl

10h 21m

2 stops

YXU9:21 pmLondon

$1,138

momondo Fare Finder

Use the filters below to find and compare flights from London, Ontario to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

YXU - SEA

YXUSEA

London

dom 5/24

6:15 am-6:45 pm

1 stop15h 30m

Seattle/Tacoma Intl

qui 5/28

7:35 pm-5:25 am

1 stop6h 50m

$255

LondonSeattle

YXU - SEA

YXUSEA

London

dom 3/8

9:40 am-7:16 pm

2 stops12h 36m

Seattle/Tacoma Intl

qua 3/11

5:40 am-9:21 pm

2 stops12h 41m

$396

LondonSeattle

YXU - SEA

YXUSEA

London

dom 3/1

8:10 pm-2:19 pm

1 stop21h 09m

Seattle/Tacoma Intl

dom 3/8

11:55 am-6:35 am

2 stops39h 40m

$411

LondonSeattle

YXU - SEA

YXUSEA

London

dom 3/15

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

seg 3/16

8:00 pm-8:46 am

2 stops9h 46m

$415

LondonSeattle

YXU - SEA

YXUSEA

London

dom 3/1

8:10 pm-8:57 am

2 stops15h 47m

Seattle/Tacoma Intl

dom 3/8

3:10 pm-6:35 am

1 stop12h 25m

$418

LondonSeattle

YXU - SEA

YXUSEA

London

dom 5/24

2:35 pm-9:40 am

2 stops22h 05m

Seattle/Tacoma Intl

qui 5/28

7:35 pm-5:25 am

1 stop6h 50m

$423

LondonSeattle

YXU - SEA

YXUSEA

London

dom 3/8

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

qua 3/11

8:00 am-9:21 pm

1 stop10h 21m

$433

LondonSeattle

YXU - SEA

YXUSEA

London

qua 3/11

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

sáb 3/14

8:00 am-9:21 pm

1 stop10h 21m

$434

LondonSeattle

YXU - SEA

YXUSEA

London

dom 5/24

2:35 pm-9:40 am

2 stops22h 05m

Seattle/Tacoma Intl

qui 5/28

10:30 am-1:45 pm

2 stops24h 15m

$442

LondonPortland

YXU - PDX

YXUPDX

London

seg 3/2

9:25 am-12:38 pm

2 stops30h 13m

Portland

qua 3/4

3:50 pm-9:21 pm

2 stops26h 31m

$594

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London, Ontario 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 airline that flies from London to Washington?

Air Canada and WestJet are the most popular carriers operating from London to Washington

What airlines fly to State of Washington?

Alaska Airlines, Air Canada and WestJet are the top three most popular airlines that fly to State of Washington from London, Ontario according to our data. Alaska Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 6 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

Cheap London, Ontario to State of Washington flight deals and tips

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

Fastest flight time	16h 15m
Direct flights	None

The fastest flight from London, Ontario to State of Washington takes 16h 15m

There are no direct flights from London, Ontario to State of Washington. There are no popular flight routes from London, Ontario to State of Washington.

Search flight deals

When did momondo last update prices for flights from London Airport to Washington?
Prices for flights from London Airport to Washington were last updated today.
How old do you have to be to fly from London Airport to Washington?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport 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.

Why use momondo?

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

Finding the right flight to Washington from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.

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

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

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

Once you have performed a search for London to Washington 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 Washington right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Washington 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 State of Washington trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from London, Ontario to Washington from $167

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, Ontario to Washington departing on 2/21. 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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Air Canada flights from London, Ontario to State of Washington

Our best Air Canada deals on London, Ontario to State of Washington flight tickets

United Airlines flights from London, Ontario to State of Washington

Our best United Airlines deals on London, Ontario to State of Washington flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from London, Ontario to Washington that are best for you.

See travel insights to Washington from

How to get the cheapest flight ticket from London, Ontario to State of Washington

What is the cheapest airline that flies from London to Washington?

Air Canada and WestJet are the most popular carriers operating from London to Washington

What airlines fly to State of Washington?

Cheap London, Ontario to State of Washington flight deals and tips

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

Fastest flight time

Direct flights

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

How old do you have to be to fly from London Airport to Washington?

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

Why use momondo?

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

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

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

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

An easier way to manage your State of Washington trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington

Popular cities in Washington

Popular flights according to clicks in the last 7 days on momondo

State of Washington flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Washington

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