Direct flights to Seattle | Cheapflights

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Best

Last-minute

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Cheapest flights to Seattle
Explore the most affordable flight options available to Seattle. Find the lowest fares based on data from user searches, with prices last updated on 5 May 2026.

Sun 31/517:00

LHR

-

SEA

Nonstop9h 50m

Alaska Airlines

Tue 16/621:45

SEA

-

LHR

Nonstop9h 20m

Alaska Airlines

Deal found 1/5£569

Tue 2/609:50

LHR

-

SEA

Nonstop9h 45m

Finnair

Tue 9/620:20

SEA

-

LHR

Nonstop9h 25m

Finnair

Deal found 3/5£572

Wed 22/717:45

LHR

-

SEA

Nonstop10h 18m

Multiple Airlines

Wed 26/818:20

SEA

-

LHR

Nonstop9h 50m

Multiple Airlines

Deal found 3/5£574

Mon 18/509:50

LHR

-

SEA

Nonstop9h 45m

British Airways

Mon 25/520:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 1/5£575

Wed 28/1014:55

LHR

-

SEA

Nonstop10h 00m

American Airlines

Wed 4/1118:50

SEA

-

LHR

Nonstop9h 30m

American Airlines

Deal found 30/4£577

Thu 15/1017:00

LHR

-

SEA

Nonstop9h 55m

Alaska Airlines

Wed 21/1021:45

SEA

-

LHR

Nonstop9h 20m

Alaska Airlines

Deal found 4/5£578

Sun 31/511:40

LHR

-

SEA

Nonstop10h 20m

Air France

Sun 7/618:20

SEA

-

LHR

Nonstop9h 50m

Air France

Deal found 1/5£579

Mon 12/1016:30

LHR

-

SEA

Nonstop9h 55m

British Airways

Wed 21/1020:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 4/5£580

Wed 28/1010:00

LHR

-

SEA

Nonstop10h 05m

KLM

Wed 4/1116:48

SEA

-

LHR

Nonstop9h 42m

KLM

Deal found 3/5£583

Best time to book a flight to Seattle

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

LON-SEA

LHR-SEA

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.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 26/9

11:40-14:00

Nonstop10h 20m

Seattle/Tacoma Intl

Thu 22/10

21:50-15:35

Nonstop9h 45m

£603

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 4/6

11:40-14:00

Nonstop10h 20m

Seattle/Tacoma Intl

Thu 11/6

22:05-15:35

Nonstop9h 30m

£609

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 3/9

17:45-20:13

Nonstop10h 28m

Seattle/Tacoma Intl

Thu 17/9

20:10-14:00

Nonstop9h 50m

£624

Fastest return journey

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 3/6

17:00-18:50

Nonstop9h 50m

Seattle/Tacoma Intl

Sat 24/10

20:00-12:20

Nonstop9h 20m

£630

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 3/6

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 19/10

20:20-13:45

Nonstop9h 25m

£632

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 3/8

11:40-14:00

Nonstop10h 20m

Seattle/Tacoma Intl

Fri 14/8

18:20-12:10

Nonstop9h 50m

£634

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 7/7

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

Wed 29/7

21:50-15:35

Nonstop9h 45m

£636

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 21/6

18:30-20:42

Nonstop10h 12m

Seattle/Tacoma Intl

Mon 29/6

22:05-15:35

Nonstop9h 30m

£641

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 3/9

17:45-20:13

Nonstop10h 28m

Seattle/Tacoma Intl

Thu 17/9

20:10-14:00

Nonstop9h 50m

£643

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 28/7

11:40-14:00

Nonstop10h 20m

Seattle/Tacoma Intl

Tue 25/8

18:20-12:10

Nonstop9h 50m

£651

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 21 resultsSorted by cheapest first

1

2

3

Reviews of airlines flying non-stop to Seattle

Check out reviews from past customers who have flown KLM,Air France, andVirgin Atlantic to the United States to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

7.8

Good

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

7.4

Good

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Virgin Atlantic

7.4

Good

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

7.0

Good

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

British Airways

6.7

Okay

7.8

Good

Reviews

1 / 20

6.0

Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

FAQ about direct flights to Seattle

How much are direct flights to Seattle?
On average, a one-way direct flight to Seattle will cost users approximately £651. If you're looking for a direct return flight to Seattle, you can expect to pay around £4,060.
Which airlines fly direct to Seattle?
At the moment, Virgin Atlantic, British Airways, KLM, Air France, Alaska Airlines, American Airlines, Delta, Aer Lingus, Finnair, Iberia offer direct flights to Seattle. Virgin Atlantic is currently the most popular airline that flies direct to Seattle.
How long is a direct flight to Seattle?
While the flight duration depends heavily on the origin, travellers can expect non-stop flights to Seattle to last approximately 9h 45m on average. The quickest direct flight to Seattle at this time departs from London Heathrow Airport (9h 45m), while the longest leaves from London Heathrow Airport (9h 45m).
What is the best time of year to fly direct to Seattle?
If you're seeking the lowest price on a direct flight to Seattle, February is worth consideration, as prices are usually at their lowest, on average. January may be most appealing to users looking for the quietest time to visit Seattle, when demand is typically at its lowest.
What is the most popular direct flight origin to Seattle?
Currently, the most popular direct flight origin to Seattle is London Heathrow Airport. A return direct flight from London Heathrow Airport to Seattle typically costs around £2,355.

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