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

WestJet, Air Canada, and United Airlines 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 35% 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.

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.

$171 Cheap Flights from London to Washington in 2025

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Find the cheapest flights from London, Ontario to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

6:15 am - 2:16 pmYXU-SEA

11h 01m2 stops

8:00 pm - 9:46 amSEA-YXU

10h 46m2 stops

$321Air Canada

Find Deal

Sat, Oct 25 - Sat, Nov 1

6:15 am - 10:59 amYXU-SEA

7h 44m1 stop

7:15 pm - 3:02 pmSEA-YXU

16h 47m2 stops

$354Air Canada

Find Deal

Mon, Oct 13 - Fri, Oct 24

6:00 am - 10:25 amYXU-SEA

31h 25m3 stops

11:55 am - 8:12 pmSEA-YXU

29h 17m3 stops

$455WestJet

Find Deal

Sat, Oct 25 - Sat, Nov 1

6:00 am - 12:59 pmYXU-SEA

9h 59m1 stop

3:20 pm - 8:12 pmSEA-YXU

25h 52m1 stop

$457WestJet

Find Deal

Sat, Oct 25 - Sat, Nov 1

6:00 am - 12:59 pmYXU-SEA

9h 59m1 stop

11:55 am - 8:12 pmSEA-YXU

29h 17m2 stops

$464WestJet

Find Deal

Sat, Oct 25 - Sat, Nov 1

6:00 am - 10:25 amYXU-SEA

31h 25m2 stops

11:55 am - 8:12 pmSEA-YXU

29h 17m3 stops

$472WestJet

Find Deal

Sat, Oct 25 - Sat, Nov 1

3:40 pm - 9:45 pmYXU-SEA

9h 05m1 stop

12:41 pm - 6:05 pmSEA-YXU

26h 24m3 stops

$477United Airlines

Find Deal

Sat, Oct 25 - Sat, Nov 1

6:15 am - 9:15 pmYXU-SEA

18h 00m3 stops

7:00 am - 9:21 pmSEA-YXU

11h 21m2 stops

$483United Airlines

Find Deal

Sat, Oct 25 - Sat, Nov 1

6:15 am - 2:16 pmYXU-SEA

11h 01m2 stops

7:15 pm - 3:02 pmSEA-YXU

16h 47m2 stops

$490Air Canada

Find Deal

Mon, Oct 13 - Fri, Oct 24

6:15 am - 11:29 pmYXU-SEA

20h 14m2 stops

1:00 pm - 9:27 pmSEA-YXU

29h 27m3 stops

$546United Airlines

Find Deal

Mon, Oct 13 - Fri, Oct 24

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

Oct 25

YXU3:40 pmLondon

9h 05m

1 stop

SEA9:45 pmSeattle/Tacoma Intl

Nov 1

SEA12:41 pmSeattle/Tacoma Intl

26h 24m

3 stops

YXU6:05 pmLondon

$477

Find similar

United Airlines

Oct 25

YXU6:15 amLondon

18h 00m

3 stops

SEA9:15 pmSeattle/Tacoma Intl

Nov 1

SEA7:00 amSeattle/Tacoma Intl

11h 21m

2 stops

YXU9:21 pmLondon

$483

Find similar

United Airlines

Oct 13

YXU6:15 amLondon

20h 14m

2 stops

SEA11:29 pmSeattle/Tacoma Intl

Oct 24

SEA1:00 pmSeattle/Tacoma Intl

29h 27m

3 stops

YXU9:27 pmLondon

$546

Find similar

WestJet flights from London, Ontario to State of Washington

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

WestJet

Oct 25

YXU6:00 amLondon

31h 25m

3 stops

SEA10:25 amSeattle/Tacoma Intl

Nov 1

SEA11:55 amSeattle/Tacoma Intl

29h 17m

3 stops

YXU8:12 pmLondon

$455

Find similar

WestJet

Oct 25

YXU6:00 amLondon

9h 59m

1 stop

SEA12:59 pmSeattle/Tacoma Intl

Nov 1

SEA3:20 pmSeattle/Tacoma Intl

25h 52m

1 stop

YXU8:12 pmLondon

$457

Find similar

WestJet

Oct 25

YXU6:00 amLondon

9h 59m

1 stop

SEA12:59 pmSeattle/Tacoma Intl

Nov 1

SEA11:55 amSeattle/Tacoma Intl

29h 17m

2 stops

YXU8:12 pmLondon

$464

Find similar

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

Sat 10/25

6:15 am-2:16 pm

2 stops11h 01m

Seattle/Tacoma Intl

Sat 11/1

8:00 pm-9:46 am

2 stops10h 46m

$321

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 10/13

6:15 am-10:59 am

1 stop7h 44m

Seattle/Tacoma Intl

Fri 10/24

7:15 pm-3:02 pm

2 stops16h 47m

$354

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 10/25

6:00 am-10:25 am

3 stops31h 25m

Seattle/Tacoma Intl

Sat 11/1

11:55 am-8:12 pm

3 stops29h 17m

$455

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 10/25

6:00 am-12:59 pm

1 stop9h 59m

Seattle/Tacoma Intl

Sat 11/1

3:20 pm-8:12 pm

1 stop25h 52m

$457

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 10/25

6:00 am-12:59 pm

1 stop9h 59m

Seattle/Tacoma Intl

Sat 11/1

11:55 am-8:12 pm

2 stops29h 17m

$464

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 10/25

6:00 am-10:25 am

2 stops31h 25m

Seattle/Tacoma Intl

Sat 11/1

11:55 am-8:12 pm

3 stops29h 17m

$472

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 10/25

3:40 pm-9:45 pm

1 stop9h 05m

Seattle/Tacoma Intl

Sat 11/1

12:41 pm-6:05 pm

3 stops26h 24m

$477

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 10/25

6:15 am-9:15 pm

3 stops18h 00m

Seattle/Tacoma Intl

Sat 11/1

7:00 am-9:21 pm

2 stops11h 21m

$483

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 10/13

6:15 am-2:16 pm

2 stops11h 01m

Seattle/Tacoma Intl

Fri 10/24

7:15 pm-3:02 pm

2 stops16h 47m

$490

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 10/13

6:15 am-11:29 pm

2 stops20h 14m

Seattle/Tacoma Intl

Fri 10/24

1:00 pm-9:27 pm

3 stops29h 27m

$546

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

Prices

Airlines

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

The cheapest day to depart from London, Ontario to State of Washington is on a Saturday. Travelers who choose to depart for State of Washington on a Saturday will often find tickets for as low as $316. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from London, Ontario to State of Washington for around $449.

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 $330. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $477 on average. Flights to State of Washington from London, Ontario in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights	None

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

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Cheap flights from London, Ontario to Washington from $171

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 10/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from London, Ontario to Washington

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United Airlines flights from London, Ontario to State of Washington

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

WestJet flights from London, Ontario to State of Washington

Our best WestJet 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.

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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 day to depart on your flight to State of Washington?

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

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

WestJet, Air Canada, and United Airlines 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

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