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.

$276 Cheap Flights from London to Washington in 2026

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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 pm - 6:45 pm

YXU

SEA

27h 50m

1 stop

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

$407WestJet

Thu, Apr 30 - Mon, May 4

6:10 am - 6:45 pm

YXU

SEA

15h 35m

1 stop

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

$414WestJet

Fri, Jun 5 - Tue, Jun 9

5:55 pm - 9:40 am

YXU

SEA

18h 45m

1 stop

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

$478WestJet

Thu, Apr 30 - Mon, May 4

5:55 pm - 6:45 pm

YXU

SEA

27h 50m

1 stop

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

$479WestJet

Thu, Apr 30 - Mon, May 4

3:30 pm - 9:08 pm

YXU

SEA

8h 38m

1 stop

7:20 pm - 11:43 am

SEA

YXU

13h 23m

2 stops

$480Air Canada

Fri, Jun 5 - Tue, Jun 9

9:25 am - 9:53 pm

YXU

SEA

15h 28m

1 stop

7:20 pm - 8:53 am

SEA

YXU

10h 33m

2 stops

$486Air Canada

Thu, Apr 30 - Mon, May 4

9:25 am - 10:47 pm

YXU

SEA

16h 22m

2 stops

7:05 pm - 5:33 pm

SEA

YXU

19h 28m

2 stops

$523United Airlines

Thu, Apr 30 - Mon, May 4

9:25 am - 11:59 pm

YXU

SEA

17h 34m

2 stops

7:00 am - 9:38 pm

SEA

YXU

11h 38m

2 stops

$524United Airlines

Thu, Apr 30 - Mon, May 4

6:10 am - 1:50 pm

YXU

PDX

10h 40m

1 stop

6:05 pm - 5:20 am

PDX

YXU

8h 15m

2 stops

$776Delta

Fri, May 1 - Tue, May 5

6:10 am - 1:50 pm

YXU

PDX

10h 40m

1 stop

6:05 pm - 5:20 am

PDX

YXU

8h 15m

2 stops

$777Delta

Fri, May 1 - Tue, May 5

WestJet flights from London, Ontario to State of Washington

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

WestJet

Apr 30

YXU5:55 pmLondon

27h 50m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

May 4

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

$407

WestJet

Jun 5

YXU6:10 amLondon

15h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Jun 9

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

$414

WestJet

Apr 30

YXU5:55 pmLondon

18h 45m

1 stop

SEA9:40 amSeattle/Tacoma Intl

May 4

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

$478

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 5

YXU3:30 pmLondon

8h 38m

1 stop

SEA9:08 pmSeattle/Tacoma Intl

Jun 9

SEA7:20 pmSeattle/Tacoma Intl

13h 23m

2 stops

YXU11:43 amLondon

$480

Air Canada

Apr 30

YXU9:25 amLondon

15h 28m

1 stop

SEA9:53 pmSeattle/Tacoma Intl

May 4

SEA7:20 pmSeattle/Tacoma Intl

10h 33m

2 stops

YXU8:53 amLondon

$486

Air Canada

Apr 30

YXU9:25 amLondon

15h 28m

1 stop

SEA9:53 pmSeattle/Tacoma Intl

May 4

SEA7:20 pmSeattle/Tacoma Intl

10h 33m

2 stops

YXU8:53 amLondon

$487

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

Thu 4/30

5:55 pm-6:45 pm

1 stop27h 50m

Seattle/Tacoma Intl

Mon 5/4

7:35 pm-5:20 am

1 stop6h 45m

$407

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 6/5

6:10 am-6:45 pm

1 stop15h 35m

Seattle/Tacoma Intl

Tue 6/9

7:35 pm-5:20 am

1 stop6h 45m

$414

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 4/30

5:55 pm-9:40 am

1 stop18h 45m

Seattle/Tacoma Intl

Mon 5/4

7:35 pm-5:20 am

1 stop6h 45m

$478

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 4/30

5:55 pm-6:45 pm

1 stop27h 50m

Seattle/Tacoma Intl

Mon 5/4

7:35 pm-5:20 am

1 stop6h 45m

$479

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 6/5

3:30 pm-9:08 pm

1 stop8h 38m

Seattle/Tacoma Intl

Tue 6/9

7:20 pm-11:43 am

2 stops13h 23m

$480

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 4/30

9:25 am-9:53 pm

1 stop15h 28m

Seattle/Tacoma Intl

Mon 5/4

7:20 pm-8:53 am

2 stops10h 33m

$486

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 4/30

9:25 am-10:47 pm

2 stops16h 22m

Seattle/Tacoma Intl

Mon 5/4

7:05 pm-5:33 pm

2 stops19h 28m

$523

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 4/30

9:25 am-11:59 pm

2 stops17h 34m

Seattle/Tacoma Intl

Mon 5/4

7:00 am-9:38 pm

2 stops11h 38m

$524

Quickest round-trip

LondonPortland

YXU - PDX

YXUPDX

London

Fri 5/1

6:10 am-1:50 pm

1 stop10h 40m

Portland

Tue 5/5

6:05 pm-5:20 am

2 stops8h 15m

$776

LondonPortland

YXU - PDX

YXUPDX

London

Fri 5/1

6:10 am-1:50 pm

1 stop10h 40m

Portland

Tue 5/5

6:05 pm-5:20 am

2 stops8h 15m

$777

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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?

Air Canada, United Airlines, and Delta 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 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	12h 09m
Direct flights	None

The fastest flight from London, Ontario to State of Washington takes 12h 09m

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.