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.

$359 Cheap Flights from London, Ontario to Washington in 2026/27

Find the cheapest flights from London, Ontario to Washington

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:10 am - 6:45 pmYXU London-SEA Seattle/Tacoma Intl

15h 35m1 stop Calgary

7:35 pm - 5:20 amSEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

$359WestJet

Wed, Oct 21 - Thu, Oct 22

6:40 am - 1:40 pmYXU London-SEA Seattle/Tacoma Intl

10h 00m1 stop Calgary

5:48 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

8h 47m1 stop Calgary

$398Multiple Airlines

Tue, Nov 24 - Mon, Nov 30

6:10 am - 6:45 pmYXU London-SEA Seattle/Tacoma Intl

15h 35m1 stop Calgary

7:35 pm - 5:20 amSEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

$429WestJet

Wed, Oct 21 - Thu, Oct 22

6:40 am - 1:40 pmYXU London-SEA Seattle/Tacoma Intl

10h 00m1 stop Calgary

10:03 am - 5:35 amSEA Seattle/Tacoma Intl-YXU London

16h 32m2 stops Vancouver Intl Calgary

$565Multiple Airlines

Tue, Nov 24 - Mon, Nov 30

6:10 am - 7:08 amYXU London-SEA Seattle/Tacoma Intl

27h 58m2 stops Calgary Vancouver Intl

5:58 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

8h 37m1 stop Calgary

$581Multiple Airlines

Sun, Oct 25 - Tue, Nov 17

6:10 am - 6:45 pmYXU London-SEA Seattle/Tacoma Intl

15h 35m1 stop Calgary

2:30 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

12h 05m1 stop Calgary

$586WestJet

Fri, Oct 23 - Tue, Nov 17

6:10 am - 4:04 pmYXU London-SEA Seattle/Tacoma Intl

12h 54m2 stops Calgary San Francisco

5:58 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

8h 37m1 stop Calgary

$599Multiple Airlines

Sat, Oct 24 - Wed, Nov 18

6:10 am - 8:20 amYXU London-SEA Seattle/Tacoma Intl

29h 10m2 stops Calgary San Francisco

5:58 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

8h 37m1 stop Calgary

$607Multiple Airlines

Wed, Oct 21 - Tue, Nov 17

6:10 am - 7:08 amYXU London-SEA Seattle/Tacoma Intl

27h 58m2 stops Calgary Vancouver Intl

5:58 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

8h 37m1 stop Calgary

$620Multiple Airlines

Sun, Oct 25 - Mon, Nov 16

3:30 pm - 9:04 pmYXU London-SEA Seattle/Tacoma Intl

8h 34m1 stop Toronto Pearson Intl

10:10 am - 9:52 pmSEA Seattle/Tacoma Intl-YXU London

8h 42m2 stops Vancouver Intl Toronto Pearson Intl

$625Air Canada

Thu, Oct 22 - Mon, Nov 16

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WestJet flights from London, Ontario to State of Washington

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

WestJet

Oct 21

YXU6:10 amLondon

15h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Oct 22

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

$359

WestJet

Oct 21

YXU6:10 amLondon

15h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Oct 22

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

$429

WestJet

Oct 23

YXU6:10 amLondon

15h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Nov 17

SEA2:30 pmSeattle/Tacoma Intl

12h 05m

1 stop

YXU5:35 amLondon

$586

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

Oct 22

YXU3:30 pmLondon

8h 34m

1 stop

SEA9:04 pmSeattle/Tacoma Intl

Nov 16

SEA10:10 amSeattle/Tacoma Intl

8h 42m

2 stops

YXU9:52 pmLondon

$625

Air Canada

Oct 22

YXU3:30 pmLondon

10h 17m

2 stops

SEA10:47 pmSeattle/Tacoma Intl

Nov 16

SEA8:40 amSeattle/Tacoma Intl

10h 12m

2 stops

YXU9:52 pmLondon

$633

Air Canada

Nov 12

YXU3:25 pmLondon

8h 34m

1 stop

SEA8:59 pmSeattle/Tacoma Intl

Nov 14

SEA7:05 pmSeattle/Tacoma Intl

16h 37m

2 stops

YXU2:42 pmLondon

$640

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 London - SEA Seattle/Tacoma Intl

YXUSEA

London

Wed 10/21

6:10 am-6:45 pm

1 stop15h 35m

Seattle/Tacoma Intl

Thu 10/22

7:35 pm-5:20 am

1 stop6h 45m

$359

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Tue 11/24

6:40 am-1:40 pm

1 stop10h 00m

Seattle/Tacoma Intl

Mon 11/30

5:48 pm-5:35 am

1 stop8h 47m

$398

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Wed 10/21

6:10 am-6:45 pm

1 stop15h 35m

Seattle/Tacoma Intl

Thu 10/22

7:35 pm-5:20 am

1 stop6h 45m

$429

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Tue 11/24

6:40 am-1:40 pm

1 stop10h 00m

Seattle/Tacoma Intl

Mon 11/30

10:03 am-5:35 am

2 stops16h 32m

$565

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Sun 10/25

6:10 am-7:08 am

2 stops27h 58m

Seattle/Tacoma Intl

Tue 11/17

5:58 pm-5:35 am

1 stop8h 37m

$581

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Fri 10/23

6:10 am-6:45 pm

1 stop15h 35m

Seattle/Tacoma Intl

Tue 11/17

2:30 pm-5:35 am

1 stop12h 05m

$586

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Sat 10/24

6:10 am-4:04 pm

2 stops12h 54m

Seattle/Tacoma Intl

Wed 11/18

5:58 pm-5:35 am

1 stop8h 37m

$599

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Wed 10/21

6:10 am-8:20 am

2 stops29h 10m

Seattle/Tacoma Intl

Tue 11/17

5:58 pm-5:35 am

1 stop8h 37m

$607

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Sun 10/25

6:10 am-7:08 am

2 stops27h 58m

Seattle/Tacoma Intl

Mon 11/16

5:58 pm-5:35 am

1 stop8h 37m

$620

Quickest round-trip

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Thu 10/22

3:30 pm-9:04 pm

1 stop8h 34m

Seattle/Tacoma Intl

Mon 11/16

10:10 am-9:52 pm

2 stops8h 42m

$625

Flights are sorted by cheapest round-trip flights first.

Sorted 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 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 37% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 5 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

Best Price Found	$359
Fastest flight time	10h 00m
Direct flights	None

The best flight deal from London, Ontario to State of Washington found on momondo in the last 72 hours is $359

The fastest flight from London, Ontario to State of Washington takes 10h 00m

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

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.