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$155+ Cheap flights from London, ON (YXU) to Washington

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SEA
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from London to Washington

Keep the following information in mind while searching for London to Washington flight deals. Data was last updated April 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$415
(Trip.com)

One-way from

$155
(United Airlines)

Popular in

April

Cheapest in

May

Average price

$1,098
Provider with most accurate pricing for London-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for London-Seattle/Tacoma Intl flights.
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From London to Washington
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One-way flight from London to Washington
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Highest demand for flights based on searches. 32% potential increase in price ($208 potential increase over avg. RT price).
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Cheapest flight prices on average. 20% potential price decrease ($74 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from London to Washington

Cheapest flights from London to Washington
Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This Trip.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/276:00 amYXU - SEA
2 stops21h 34mMultiple Airlines
Sun 7/67:05 amSEA - YXU
1 stop19h 09mMultiple Airlines
Deal found 4/28$415
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/193:35 pmYXU - PDX
2 stops20h 22mUnited Airlines
Thu 6/2610:55 pmPDX - YXU
2 stops13h 02mUnited Airlines
Deal found 4/28$496
This Trip.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/278:00 pmYXU - SEA
1 stop19h 58mWestJet
Sun 7/67:05 amSEA - YXU
1 stop19h 09mWestJet
Deal found 4/28$522
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/126:15 amYXU - SEA
1 stop7h 36mUnited Airlines
Thu 6/1911:50 pmSEA - YXU
2 stops18h 37mUnited Airlines
Deal found 4/28$534
This Air Canada deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/126:15 amYXU - SEA
1 stop7h 36mAir Canada
Thu 6/1911:35 amSEA - YXU
1 stop6h 52mAir Canada
Deal found 4/28$538
This FlightHub deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/198:00 pmYXU - PDX
1 stop19h 52mWestJet
Thu 6/261:28 pmPDX - YXU
2 stops26h 41mWestJet
Deal found 4/28$623

Cheapflights Fare Finder

Customize your flight search to find flights from London to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2025.
Use the filters below to find and compare flights from London to Washington that are best for you.

Fly from

London

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 6/27

6:00 am-12:34 am

2 stops21h 34m

Seattle/Tacoma Intl

Sun 7/6

7:05 am-5:14 am

1 stop19h 09m

$415

LondonPortland

YXU - PDX

YXUPDX

London

Thu 6/19

3:35 pm-8:57 am

2 stops20h 22m

Portland

Thu 6/26

10:55 pm-2:57 pm

2 stops13h 02m

$496

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 6/27

8:00 pm-12:58 pm

1 stop19h 58m

Seattle/Tacoma Intl

Sun 7/6

7:05 am-5:14 am

1 stop19h 09m

$522

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 6/12

6:15 am-10:51 am

1 stop7h 36m

Seattle/Tacoma Intl

Thu 6/19

11:50 pm-9:27 pm

2 stops18h 37m

$534

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 6/12

6:15 am-10:51 am

1 stop7h 36m

Seattle/Tacoma Intl

Thu 6/19

11:35 am-9:27 pm

1 stop6h 52m

$538

LondonPortland

YXU - PDX

YXUPDX

London

Thu 6/19

8:00 pm-12:52 pm

1 stop19h 52m

Portland

Thu 6/26

1:28 pm-7:09 pm

2 stops26h 41m

$623

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 6/13

6:15 am-10:51 am

1 stop7h 36m

$155

LondonSeattle

YXU - SEA

YXUSEA

London

Fri 6/13

8:00 pm-12:31 pm

2 stops43h 31m

$250

LondonPortland

YXU - PDX

YXUPDX

London

Thu 6/12

6:00 am-12:52 pm

1 stop9h 52m

$332

LondonPortland

YXU - PDX

YXUPDX

London

Thu 6/12

3:35 pm-8:47 pm

2 stops32h 12m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 11 results
1
2

Best time to book a flight from London to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from London with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Washington

What is the cheapest month to book a flight from London, Ontario to State of Washington?

Currently, January is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $238). Flying from London, Ontario to State of Washington in July is currently the most expensive (average of $405). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YXU to WA?

Find hourly flight availability from London to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London, Ontario to State of Washington as you normally would.

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated April 30, 2025.
Read through reviews of airlines operating flights from London to Washington, such as Delta, United Airlines and WestJet. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
WestJet
7.2
Good
2,823 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.0
Good
9,242 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from London to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from London to Washington?

    For a flight from London to Washington, you will be flying from London. London (YXU) is just 5.3 mi from the center of the city.

  • What are the cheapest airlines to fly from London, Ontario to State of Washington one-way?

    $155 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on WestJet and Delta, with prices starting from $250 and $332, respectively.

  • Can I find deals for flights from London to Washington that include hotel bookings?

    Yes. In addition to deals on London to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Washington.

  • Can I find deals for business class flights from London to Washington?

    Yes. Cheapflights offers flight deals from London to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London, Ontario to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $238). Flying from London, Ontario to State of Washington in July is currently the most expensive (average of $405). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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