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.

$180 Cheap Flights from London, Ontario to Washington in 2026

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Find the cheapest flights from London, Ontario to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:40 pm - 9:00 pm

YXU

SEA

27h 20m

1 stop

7:00 am - 4:45 pm

SEA

YXU

6h 45m

1 stop

$254WestJet

Tue, Aug 18 - Thu, Aug 27

5:55 pm - 9:40 am

YXU

SEA

18h 45m

1 stop

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

$255WestJet

Sun, Jul 26 - Wed, Jul 29

6:10 am - 6:45 pm

YXU

SEA

15h 35m

1 stop

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

$286WestJet

Sun, Oct 4 - Sun, Oct 11

6:10 am - 1:50 pm

YXU

PDX

10h 40m

1 stop

2:30 pm - 5:20 am

PDX

YXU

11h 50m

1 stop

$343WestJet

Tue, Aug 11 - Wed, Aug 12

3:30 pm - 9:08 pm

YXU

SEA

8h 38m

1 stop

7:20 pm - 5:33 pm

SEA

YXU

19h 13m

2 stops

$511Air Canada

Tue, Jun 9 - Wed, Jun 10

5:40 am - 2:22 pm

YXU

SEA

11h 42m

2 stops

7:20 pm - 9:20 am

SEA

YXU

11h 00m

2 stops

$514Air Canada

Sun, Oct 4 - Sun, Oct 11

3:30 pm - 9:08 pm

YXU

SEA

8h 38m

1 stop

8:00 am - 9:38 pm

SEA

YXU

10h 38m

1 stop

$516Air Canada

Tue, Jun 9 - Wed, Jun 10

6:10 am - 1:50 pm

YXU

PDX

10h 40m

1 stop

5:54 pm - 5:20 am

PDX

YXU

8h 26m

2 stops

$547Delta

Tue, Aug 11 - Wed, Aug 12

6:10 am - 1:50 pm

YXU

PDX

10h 40m

1 stop

5:54 pm - 5:20 am

PDX

YXU

8h 26m

2 stops

$548Delta

Tue, Aug 11 - Wed, Aug 12

6:10 am - 1:50 pm

YXU

PDX

10h 40m

1 stop

5:54 pm - 5:20 am

PDX

YXU

8h 26m

2 stops

$552Delta

Tue, Aug 11 - Wed, Aug 12

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

Aug 18

YXU5:40 amLondon

16h 28m

3 stops

SEA7:08 pmSeattle/Tacoma Intl

Aug 27

SEA11:00 pmSeattle/Tacoma Intl

19h 40m

2 stops

YXU9:40 pmLondon

$595

United Airlines

Jun 22

YXU6:10 pmLondon

18h 00m

2 stops

PDX9:10 amPortland

Jun 28

PDX11:30 pmPortland

12h 27m

2 stops

YXU2:57 pmLondon

$680

United Airlines

Jul 26

YXU5:10 amLondon

21h 00m

2 stops

SEA11:10 pmSeattle/Tacoma Intl

Jul 29

SEA5:00 pmSeattle/Tacoma Intl

21h 45m

3 stops

YXU5:45 pmLondon

$681

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

Jun 9

YXU3:30 pmLondon

8h 38m

1 stop

SEA9:08 pmSeattle/Tacoma Intl

Jun 10

SEA7:20 pmSeattle/Tacoma Intl

19h 13m

2 stops

YXU5:33 pmLondon

$511

Air Canada

Oct 4

YXU5:40 amLondon

11h 42m

2 stops

SEA2:22 pmSeattle/Tacoma Intl

Oct 11

SEA7:20 pmSeattle/Tacoma Intl

11h 00m

2 stops

YXU9:20 amLondon

$514

Air Canada

Jun 9

YXU3:30 pmLondon

8h 38m

1 stop

SEA9:08 pmSeattle/Tacoma Intl

Jun 10

SEA8:00 amSeattle/Tacoma Intl

10h 38m

1 stop

YXU9:38 pmLondon

$516

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

Cheapest round-trip

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 8/18

8:40 pm-9:00 pm

1 stop27h 20m

Seattle/Tacoma Intl

Thu 8/27

7:00 am-4:45 pm

1 stop6h 45m

$254

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 7/26

5:55 pm-9:40 am

1 stop18h 45m

Seattle/Tacoma Intl

Wed 7/29

7:35 pm-5:20 am

1 stop6h 45m

$255

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 10/4

6:10 am-6:45 pm

1 stop15h 35m

Seattle/Tacoma Intl

Sun 10/11

7:35 pm-5:20 am

1 stop6h 45m

$286

LondonPortland

YXU - PDX

YXUPDX

London

Tue 8/11

6:10 am-1:50 pm

1 stop10h 40m

Portland

Wed 8/12

2:30 pm-5:20 am

1 stop11h 50m

$343

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 6/9

3:30 pm-9:08 pm

1 stop8h 38m

Seattle/Tacoma Intl

Wed 6/10

7:20 pm-5:33 pm

2 stops19h 13m

$511

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 10/4

5:40 am-2:22 pm

2 stops11h 42m

Seattle/Tacoma Intl

Sun 10/11

7:20 pm-9:20 am

2 stops11h 00m

$514

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 6/9

3:30 pm-9:08 pm

1 stop8h 38m

Seattle/Tacoma Intl

Wed 6/10

8:00 am-9:38 pm

1 stop10h 38m

$516

Quickest round-trip

LondonPortland

YXU - PDX

YXUPDX

London

Tue 8/11

6:10 am-1:50 pm

1 stop10h 40m

Portland

Wed 8/12

5:54 pm-5:20 am

2 stops8h 26m

$547

LondonPortland

YXU - PDX

YXUPDX

London

Tue 8/11

6:10 am-1:50 pm

1 stop10h 40m

Portland

Wed 8/12

5:54 pm-5:20 am

2 stops8h 26m

$548

LondonPortland

YXU - PDX

YXUPDX

London

Tue 8/11

6:10 am-1:50 pm

1 stop10h 40m

Portland

Wed 8/12

5:54 pm-5:20 am

2 stops8h 26m

$552

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?

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

What airlines fly to State of Washington?

Alaska Airlines, Air Canada and Delta 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 38% 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	8h 38m
Direct flights	None

The fastest flight from London, Ontario to State of Washington takes 8h 38m

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.

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Frequently asked questions about flying from London, Ontario to Washington

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.