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 6 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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

United Airlines is the most popular carrier operating from London 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.

$176 Cheap Flights from London to Washington in 2025/26

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

5:40 pm - 10:16 pm

YXU

SEA

7h 36m1 stop

8:10 am - 9:21 pm

SEA

YXU

10h 11m2 stops

$311United Airlines

Fri, Jan 30 - Fri, Feb 6

5:10 am - 6:27 pm

YXU

SEA

16h 17m2 stops

12:35 pm - 5:05 pm

SEA

YXU

25h 30m3 stops

$317United Airlines

Fri, Jan 30 - Fri, Feb 6

5:40 pm - 10:16 pm

YXU

SEA

7h 36m1 stop

8:10 am - 9:21 pm

SEA

YXU

10h 11m1 stop

$347United Airlines

Fri, Jan 30 - Fri, Feb 6

5:10 am - 9:12 pm

YXU

SEA

19h 02m2 stops

7:00 am - 9:21 pm

SEA

YXU

11h 21m2 stops

$409United Airlines

Tue, Jan 13 - Tue, Jan 20

5:10 am - 9:12 pm

YXU

SEA

19h 02m3 stops

12:35 pm - 5:05 pm

SEA

YXU

25h 30m3 stops

$439United Airlines

Tue, Jan 13 - Tue, Jan 20

5:40 pm - 10:16 pm

YXU

SEA

7h 36m1 stop

5:00 am - 5:05 pm

SEA

YXU

9h 05m2 stops

$494United Airlines

Tue, Jan 13 - Tue, Jan 20

8:10 pm - 2:19 pm

YXU

SEA

21h 09m1 stop

3:10 pm - 6:35 am

SEA

YXU

12h 25m1 stop

$525WestJet

Mon, Mar 2 - Wed, Mar 4

9:25 am - 7:16 pm

YXU

SEA

12h 51m2 stops

5:50 am - 9:21 pm

SEA

YXU

12h 31m2 stops

$536Air Canada

Mon, Mar 2 - Wed, Mar 4

9:25 am - 7:16 pm

YXU

SEA

12h 51m2 stops

5:50 am - 9:21 pm

SEA

YXU

12h 31m2 stops

$543Air Canada

Mon, Mar 2 - Wed, Mar 4

5:40 pm - 10:16 pm

YXU

SEA

7h 36m1 stop

8:00 pm - 8:46 am

SEA

YXU

9h 46m2 stops

$555Air Canada

Mon, Mar 2 - Wed, Mar 4

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

Jan 30

YXU5:40 pmLondon

7h 36m

1 stop

SEA10:16 pmSeattle/Tacoma Intl

Feb 6

SEA12:35 pmSeattle/Tacoma Intl

25h 30m

3 stops

YXU5:05 pmLondon

$311

Find similar

United Airlines

Jan 30

YXU5:10 amLondon

19h 02m

3 stops

SEA9:12 pmSeattle/Tacoma Intl

Feb 6

SEA12:35 pmSeattle/Tacoma Intl

25h 30m

3 stops

YXU5:05 pmLondon

$317

Find similar

United Airlines

Jan 30

YXU5:40 pmLondon

7h 36m

1 stop

SEA10:16 pmSeattle/Tacoma Intl

Feb 6

SEA8:10 amSeattle/Tacoma Intl

10h 11m

1 stop

YXU9:21 pmLondon

$347

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

Mar 2

YXU8:10 pmLondon

21h 09m

1 stop

SEA2:19 pmSeattle/Tacoma Intl

Mar 4

SEA3:10 pmSeattle/Tacoma Intl

12h 25m

1 stop

YXU6:35 amLondon

$525

Find similar

WestJet

Mar 2

YXU8:10 pmLondon

21h 09m

1 stop

SEA2:19 pmSeattle/Tacoma Intl

Mar 4

SEA3:10 pmSeattle/Tacoma Intl

12h 25m

1 stop

YXU6:35 amLondon

$530

Find similar

WestJet

Jan 13

YXU8:10 pmLondon

21h 10m

1 stop

SEA2:20 pmSeattle/Tacoma Intl

Jan 20

SEA3:10 pmSeattle/Tacoma Intl

12h 24m

1 stop

YXU6:34 amLondon

$1,069

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

Fri 1/30

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Fri 2/6

8:10 am-9:21 pm

2 stops10h 11m

$311

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 1/30

5:10 am-6:27 pm

2 stops16h 17m

Seattle/Tacoma Intl

Fri 2/6

12:35 pm-5:05 pm

3 stops25h 30m

$317

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 1/30

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Fri 2/6

8:10 am-9:21 pm

1 stop10h 11m

$347

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 1/13

5:10 am-9:12 pm

2 stops19h 02m

Seattle/Tacoma Intl

Tue 1/20

7:00 am-9:21 pm

2 stops11h 21m

$409

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 1/13

5:10 am-9:12 pm

3 stops19h 02m

Seattle/Tacoma Intl

Tue 1/20

12:35 pm-5:05 pm

3 stops25h 30m

$439

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 1/13

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Tue 1/20

5:00 am-5:05 pm

2 stops9h 05m

$494

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 3/2

8:10 pm-2:19 pm

1 stop21h 09m

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-6:35 am

1 stop12h 25m

$525

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 3/2

9:25 am-7:16 pm

2 stops12h 51m

Seattle/Tacoma Intl

Wed 3/4

5:50 am-9:21 pm

2 stops12h 31m

$536

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 3/2

9:25 am-7:16 pm

2 stops12h 51m

Seattle/Tacoma Intl

Wed 3/4

5:50 am-9:21 pm

2 stops12h 31m

$543

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 3/2

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Wed 3/4

8:00 pm-8:46 am

2 stops9h 46m

$555

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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

Fastest flight time	7h 36m
Direct flights	None

The fastest flight from London, Ontario to State of Washington takes 7h 36m

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.