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

Prices for flights from London Airport to Washington are refreshed on a daily basis.

How many operators does momondo search for flights from London Airport to Washington?

There is 1 operator available for flights from London Airport to Washington as of August 2026.

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 required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

C$ 263 Cheap Flights from London, Ontario to Washington in 2026

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.

5:55 p.m. - 9:40 a.m.YXU London-SEA Seattle/Tacoma Intl

18h 45m1 stop Calgary

7:35 p.m. - 5:20 a.m.SEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

C$ 485WestJet

Thu, 24 Sep - Mon, 28 Sep

8:00 p.m. - 1:20 p.m.YXU London-SEA Seattle/Tacoma Intl

20h 20m1 stop Calgary

3:10 p.m. - 6:15 p.m.SEA Seattle/Tacoma Intl-YXU London

24h 05m1 stop Calgary

C$ 522WestJet

Wed, 18 Nov - Thu, 10 Dec

8:00 p.m. - 1:20 p.m.YXU London-SEA Seattle/Tacoma Intl

20h 20m1 stop Calgary

3:10 p.m. - 6:15 p.m.SEA Seattle/Tacoma Intl-YXU London

24h 05m1 stop Calgary

C$ 522WestJet

Tue, 17 Nov - Thu, 10 Dec

8:00 p.m. - 1:20 p.m.YXU London-SEA Seattle/Tacoma Intl

20h 20m1 stop Calgary

3:10 p.m. - 6:15 p.m.SEA Seattle/Tacoma Intl-YXU London

24h 05m1 stop Calgary

C$ 522WestJet

Thu, 19 Nov - Thu, 10 Dec

5:55 p.m. - 6:45 p.m.YXU London-SEA Seattle/Tacoma Intl

27h 50m1 stop Calgary

3:10 p.m. - 7:15 p.m.SEA Seattle/Tacoma Intl-YXU London

25h 05m1 stop Calgary

C$ 528WestJet

Mon, 19 Oct - Wed, 28 Oct

6:10 a.m. - 6:45 p.m.YXU London-SEA Seattle/Tacoma Intl

15h 35m1 stop Calgary

10:30 a.m. - 4:45 p.m.SEA Seattle/Tacoma Intl-YXU London

27h 15m1 stop Calgary

C$ 533WestJet

Sun, 27 Sep - Sun, 4 Oct

6:10 a.m. - 6:45 p.m.YXU London-SEA Seattle/Tacoma Intl

15h 35m1 stop Calgary

7:35 p.m. - 5:20 a.m.SEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

C$ 547WestJet

Wed, 9 Sep - Sat, 12 Sep

5:55 p.m. - 9:40 a.m.YXU London-SEA Seattle/Tacoma Intl

18h 45m1 stop Calgary

7:35 p.m. - 5:20 a.m.SEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

C$ 561WestJet

Thu, 24 Sep - Mon, 28 Sep

5:30 a.m. - 2:37 p.m.YXU London-SEA Seattle/Tacoma Intl

12h 07m2 stops Toronto Pearson Intl Vancouver Intl

7:05 p.m. - 8:37 a.m.SEA Seattle/Tacoma Intl-YXU London

10h 32m2 stops Vancouver Intl Toronto Pearson Intl

C$ 686Air Canada

Tue, 1 Dec - Wed, 9 Dec

6:10 a.m. - 6:45 p.m.YXU London-SEA Seattle/Tacoma Intl

15h 35m1 stop Calgary

9:45 p.m. - 5:20 a.m.SEA Seattle/Tacoma Intl-YXU London

28h 35m2 stops Las Vegas Harry Reid Intl Calgary

C$ 686Multiple Airlines

Wed, 9 Sep - Sat, 12 Sep

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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

24 Sep

YXU5:55 p.m.London

18h 45m

1 stop

SEA9:40 a.m.Seattle/Tacoma Intl

28 Sep

SEA7:35 p.m.Seattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 a.m.London

C$ 485

WestJet

17 Nov

YXU8:00 p.m.London

20h 20m

1 stop

SEA1:20 p.m.Seattle/Tacoma Intl

10 Dec

SEA3:10 p.m.Seattle/Tacoma Intl

24h 05m

1 stop

YXU6:15 p.m.London

C$ 522

WestJet

19 Oct

YXU5:55 p.m.London

27h 50m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

28 Oct

SEA3:10 p.m.Seattle/Tacoma Intl

25h 05m

1 stop

YXU7:15 p.m.London

C$ 528

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

1 Dec

YXU5:30 a.m.London

12h 07m

2 stops

SEA2:37 p.m.Seattle/Tacoma Intl

9 Dec

SEA7:05 p.m.Seattle/Tacoma Intl

10h 32m

2 stops

YXU8:37 a.m.London

C$ 686

Air Canada

19 Oct

YXU3:30 p.m.London

8h 34m

1 stop

SEA9:04 p.m.Seattle/Tacoma Intl

28 Oct

SEA8:40 a.m.Seattle/Tacoma Intl

10h 12m

2 stops

YXU9:52 p.m.London

C$ 688

Air Canada

28 Nov

YXU9:15 a.m.London

12h 07m

2 stops

SEA6:22 p.m.Seattle/Tacoma Intl

10 Dec

SEA8:15 a.m.Seattle/Tacoma Intl

10h 32m

2 stops

YXU9:47 p.m.London

C$ 814

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

Thu 24/9

5:55 p.m.-9:40 a.m.

1 stop18h 45m

Seattle/Tacoma Intl

Mon 28/9

7:35 p.m.-5:20 a.m.

1 stop6h 45m

C$ 485

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Wed 18/11

8:00 p.m.-1:20 p.m.

1 stop20h 20m

Seattle/Tacoma Intl

Thu 10/12

3:10 p.m.-6:15 p.m.

1 stop24h 05m

C$ 522

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Tue 17/11

8:00 p.m.-1:20 p.m.

1 stop20h 20m

Seattle/Tacoma Intl

Thu 10/12

3:10 p.m.-6:15 p.m.

1 stop24h 05m

C$ 522

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Thu 19/11

8:00 p.m.-1:20 p.m.

1 stop20h 20m

Seattle/Tacoma Intl

Thu 10/12

3:10 p.m.-6:15 p.m.

1 stop24h 05m

C$ 522

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Mon 19/10

5:55 p.m.-6:45 p.m.

1 stop27h 50m

Seattle/Tacoma Intl

Wed 28/10

3:10 p.m.-7:15 p.m.

1 stop25h 05m

C$ 528

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Sun 27/9

6:10 a.m.-6:45 p.m.

1 stop15h 35m

Seattle/Tacoma Intl

Sun 4/10

10:30 a.m.-4:45 p.m.

1 stop27h 15m

C$ 533

Quickest round-trip

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Wed 9/9

6:10 a.m.-6:45 p.m.

1 stop15h 35m

Seattle/Tacoma Intl

Sat 12/9

7:35 p.m.-5:20 a.m.

1 stop6h 45m

C$ 547

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Thu 24/9

5:55 p.m.-9:40 a.m.

1 stop18h 45m

Seattle/Tacoma Intl

Mon 28/9

7:35 p.m.-5:20 a.m.

1 stop6h 45m

C$ 561

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Tue 1/12

5:30 a.m.-2:37 p.m.

2 stops12h 07m

Seattle/Tacoma Intl

Wed 9/12

7:05 p.m.-8:37 a.m.

2 stops10h 32m

C$ 686

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Wed 9/9

6:10 a.m.-6:45 p.m.

1 stop15h 35m

Seattle/Tacoma Intl

Sat 12/9

9:45 p.m.-5:20 a.m.

2 stops28h 35m

C$ 686

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 and United Airlines are the most popular carriers operating from London to Washington

Which 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 38% of people opting to fly with this airline when travelling 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

Fastest flight time	12h 50m
Direct flights	None

The fastest flight from London, Ontario to State of Washington takes 12h 50m

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 are refreshed on a daily basis.
How many operators does momondo search for flights from London Airport to Washington?
There is 1 operator available for flights from London Airport to Washington as of August 2026.
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 required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London, Ontario to State of Washington

Compare and see reviews for airlines that fly from London, Ontario to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom C$ 273	Free Cancellation	Rating 7.2 3,433 reviews		Search WestJet flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Washington . Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Washington from London which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from London.

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

If you are not ready to book a flight from London to Washington now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington and let you know when they change.