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£313+ Direct flights from Seattle

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 22/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — LHR
23 Apr — 30 Apr1
1 adult

Direct flights from Seattle

Cheapest flights from Seattle
Explore the most affordable flight options available from Seattle. Find the lowest fares based on data from user searches, with prices last updated on 18 April 2025.

Wed 10/913:30SEA - LHR
Nonstop9h 20mIberia
Mon 22/916:30LHR - SEA
Nonstop9h 50mIberia
Deal found 17/4£477
Mon 6/1009:30SEA - MEX
Nonstop5h 40mDelta
Mon 20/1014:55MEX - SEA
Nonstop6h 05mDelta
Deal found 18/4£493
Wed 1/1017:35SEA - LHR
Nonstop9h 45mVirgin Atlantic
Tue 14/1013:25LHR - SEA
Nonstop10h 20mVirgin Atlantic
Deal found 17/4£500
Mon 25/820:20SEA - LHR
Nonstop9h 20mBritish Airways
Thu 4/909:50LHR - SEA
Nonstop9h 45mBritish Airways
Deal found 18/4£520
Tue 2/917:35SEA - LHR
Nonstop9h 45mDelta
Fri 3/1018:00LHR - SEA
Nonstop10h 25mDelta
Deal found 16/4£529
Sun 31/820:25SEA - LHR
Nonstop9h 50mAir France
Wed 1/1017:25LHR - SEA
Nonstop10h 25mAir France
Deal found 16/4£607
Thu 22/509:34SEA - MEX
Nonstop5h 21mAeromexico
Sun 1/615:00MEX - SEA
Nonstop6h 00mAeromexico
Deal found 17/4£629
Tue 13/513:30SEA - LHR
Nonstop9h 20mFinnair
Tue 20/509:25LHR - SEA
Nonstop9h 45mFinnair
Deal found 17/4£644
Wed 7/520:20SEA - LHR
Nonstop9h 20mAlaska Airlines
Wed 14/509:50LHR - SEA
Nonstop9h 45mAlaska Airlines
Deal found 18/4£798

Find direct flights from Seattle within your budget

Use the slider to find direct flights from Seattle within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 858,174 searches. This data was last updated on 18 April 2025.

Fly to

Heathrow

Route

Depart

Return

Price

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Wed 10/9

13:30-06:50

Nonstop9h 20m

London Heathrow

Mon 22/9

16:30-18:20

Nonstop9h 50m

£477

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Mon 6/10

09:30-16:10

Nonstop5h 40m

Mexico City Benito Juarez

Mon 20/10

14:55-20:00

Nonstop6h 05m

£493

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Wed 1/10

17:35-11:20

Nonstop9h 45m

London Heathrow

Tue 14/10

13:25-15:45

Nonstop10h 20m

£500

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 2/9

17:35-11:20

Nonstop9h 45m

London Heathrow

Fri 3/10

18:00-20:25

Nonstop10h 25m

£529

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 7/9

13:30-06:50

Nonstop9h 20m

London Heathrow

Wed 17/9

09:50-11:35

Nonstop9h 45m

£550

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 31/8

20:25-14:15

Nonstop9h 50m

London Heathrow

Wed 1/10

17:25-19:50

Nonstop10h 25m

£607

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Thu 22/5

09:34-15:55

Nonstop5h 21m

Mexico City Benito Juarez

Sat 31/5

15:00-20:00

Nonstop6h 00m

£629

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 13/5

13:30-06:50

Nonstop9h 20m

London Heathrow

Tue 20/5

09:25-11:10

Nonstop9h 45m

£644

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 22/7

13:30-06:50

Nonstop9h 20m

£313

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 20/7

20:25-14:15

Nonstop9h 50m

£316

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 17 results
1
2

Best time to book a flight from Seattle

Have a flexible travel schedule? Discover the best time to fly from Seattle with our price prediction graph.
Estimated return 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.

Reviews of airlines flying non-stop to Seattle

Get insights into the airlines that provide direct flights from Seattle. 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 from Seattle. Reviews last updated Cheapflights.
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,917 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Alaska Airlines
8.0
Very Good
9,887 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Access useful and relevant information related to your journey from Seattle. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 18 April 2025.

  • Where can you fly direct from Seattle?

    Currently, the most popular direct flight destination from Seattle is London Heathrow Airport.

  • How much are direct flights from Seattle?

    On average, a one-way direct flight from Seattle will cost users approximately £288. If you're looking for a direct round-trip flight from Seattle, you can expect to pay around £390.

  • How long is a direct flight from Seattle?

    While the flight duration depends heavily on the destination, on average, travelers can expect non-stop flights from Seattle to last approximately 4h 31m on average. The quickest direct flight from Seattle at this time departs from Seattle (0h 52m), while the longest leaves from Seattle (15h 33m).

  • What is the best time of year to fly direct from Seattle?

    If you're seeking the lowest price on a direct flight from Seattle, September is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, January offers travelers the most options.

See more FAQs

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