Cheap flights from Seattle (SEA) to London (YXU) from $573

This is the cheapest one-way flight price, found on 12/6. Prices may vary by date and flight preferences.
SEA — YXU
dic. 12 — dic. 191

How to find the cheapest flight from Seattle (SEA) to London (YXU)

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to London (YXU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 7, 2023.

Round-trip from

$328
From Seattle/Tacoma Intl to London

When is the cheapest time to fly from Seattle to London, Ontario (SEA - YXU)?

It’s optimal to fly from Seattle to London, Ontario at noon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the morning.

Cheap Air Canada flights from Seattle to London

Explore cheap flight options specifically provided by Air Canada for the route between Seattle and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated diciembre 7, 2023.

Cheap Seattle to London flights in December & January 2023

Find cheap flight options from Seattle to London specifically for the months of December and January 2023. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,618,515 searches. Prices were last updated on diciembre 7, 2023.

Find flights from Seattle to London within your budget

Customize your flight search to find flights from Seattle to London 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 2,618,515 searches. Data last updated diciembre 7, 2023.

Fly from

Any airport

Fly to

Any airport

Budget

$573 - $613

Route

Depart

Return

Price

Seattle/Tacoma IntlLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

jue. 1/4

1 stop9h 46m

London

jue. 1/11

1 stop9h 18m

$573

Seattle/Tacoma IntlLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

jue. 1/4

1 stop9h 46m

London

jue. 1/11

2 stops11h 31m

$578

Seattle/Tacoma IntlLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

jue. 1/4

2 stops20h 21m

London

jue. 1/11

2 stops11h 31m

$613

Flights are sorted by cheapest first

Deals found on 12/6

Average price of flights to London by month

Plan your trip from Seattle to London by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to London is currently 0 while a round-trip flight costs 588.00 USD. Price data was last updated on December 3, 2023.

Currently, February is the cheapest month in which you can book a flight from Seattle to London, Ontario (average of $0). Flying from Seattle to London, Ontario in April is currently the most expensive (average of $552). 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.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated diciembre 7, 2023.
6.7
Okay
989 reviews

Comfort

6.9

Crew

7.6

Food

5.9

Overall

6.7

Entertainment

6.6

Boarding

6.9

Reviews

1 / 10

The plane and crew were excellent. The flight was smooth and we arrived ahead of schedule

6.7
Okay
989 reviews
6.7
Okay
989 reviews

Comfort

6.9

Crew

7.6

Food

5.9

Overall

6.7

Entertainment

6.6

Boarding

6.9

Reviews

1 / 10

The plane and crew were excellent. The flight was smooth and we arrived ahead of schedule

Average temperature in London by month

Plan your trip to London by selecting the month that matches your preferred temperature. July sees the highest average temperature while February sees the lowest average temperature. Temperature data was last updated on December 3, 2023.

YXU

Temperature

21.2 - 68 °F

Average rainfall in London by month

Keep in mind the precipitation totals in London when planning your trip. London sees an average of 3.03 precipitation per year with the most occurring in January. Precipitation data was last updated on December 3, 2023.

YXU

Rainfall

2.8 - 3.9 inches

Related info for your journey

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

Can I find flights from Seattle to London, Ontario for under $600 on Cheapflights?

Yes, there are multiple flights from Seattle to London, Ontario for under $600. The cheapest flight booked recently is on Air Canada for just $573, but on average you can expect to pay $588.

What is the cheapest airline to fly from Seattle to London, Ontario round-trip?

Cheapflights users have booked flights from Seattle to London, Ontario round-trip from $573.

What does SEA to YXU mean?

SEA stands for Seattle/Tacoma Intl Airport, while YXU stands for London Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to London
See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Seattle to London

Discover the top airline that operate flights from Seattle to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated diciembre 7, 2023.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$444Average$574FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Search flights to London by cabin class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

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How does Cheapflights help users find flights from Seattle to London?

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Why should you use Cheapflights to find cheap flight tickets from Seattle to London?

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Can Cheapflights find flights from Seattle to London with no change fees?

Need flexible booking options for your flight to London from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to London become cheaper?

Of course! You can now track prices for flights from Seattle to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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