Direct flights to Seattle | Cheapflights

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Best

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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 12 July 2026.

Thu 13/809:50

LHR

-

SEA

Nonstop9h 45m

British Airways

Fri 21/820:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 7/7£450

Tue 15/909:50

LHR

-

SEA

Nonstop9h 45m

British Airways

Fri 7/513:35

SEA

-

LHR

Nonstop9h 15m

British Airways

Deal found 9/7£483

Tue 15/909:50

LHR

-

SEA

Nonstop9h 45m

British Airways

Sun 9/520:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 9/7£485

Mon 12/1017:45

LHR

-

SEA

Nonstop10h 29m

Virgin Atlantic

Tue 20/1018:20

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 7/7£513

Mon 12/1017:45

LHR

-

SEA

Nonstop10h 29m

Air France

Tue 20/1021:50

SEA

-

LHR

Nonstop9h 45m

Air France

Deal found 7/7£514

Thu 17/911:40

LHR

-

SEA

Nonstop10h 20m

Virgin Atlantic

Mon 28/918:20

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 10/7£518

Thu 27/809:50

LHR

-

SEA

Nonstop9h 45m

British Airways

Wed 9/920:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 8/7£521

Mon 12/1017:45

LHR

-

SEA

Nonstop10h 29m

Virgin Atlantic

Mon 19/1018:20

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 10/7£521

Wed 7/1011:40

LHR

-

SEA

Nonstop10h 20m

Air France

Wed 14/1018:20

SEA

-

LHR

Nonstop9h 50m

Air France

Deal found 8/7£523

Fri 9/1017:45

LHR

-

SEA

Nonstop10h 29m

Virgin Atlantic

Tue 13/1018:20

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 10/7£525

Thu 10/909:50

LHR

-

SEA

Nonstop9h 45m

British Airways

Mon 28/920:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 11/7£526

Wed 9/909:50

LHR

-

SEA

Nonstop9h 45m

British Airways

Wed 23/920:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 8/7£527

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

Fastest return journey

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 4/9

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 7/9

13:30-06:45

Nonstop9h 15m

£553

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 23/12

12:20-14:45

Nonstop10h 25m

Seattle/Tacoma Intl

Sat 23/1

16:45-10:30

Nonstop9h 45m

£554

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 7/9

11:40-14:00

Nonstop10h 20m

Seattle/Tacoma Intl

Mon 21/9

18:20-12:10

Nonstop9h 50m

£554

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 20/12

12:20-14:45

Nonstop10h 25m

Seattle/Tacoma Intl

Mon 18/1

16:45-10:30

Nonstop9h 45m

£555

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 9/9

11:40-14:00

Nonstop10h 20m

Seattle/Tacoma Intl

Sun 20/9

21:50-15:35

Nonstop9h 45m

£559

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 9/9

17:45-20:10

Nonstop10h 25m

Seattle/Tacoma Intl

Wed 16/9

21:50-15:35

Nonstop9h 45m

£562

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 9/9

17:45-20:10

Nonstop10h 25m

Seattle/Tacoma Intl

Fri 18/9

21:50-15:35

Nonstop9h 45m

£562

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 25/9

16:30-18:25

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 28/9

20:20-13:45

Nonstop9h 25m

£570

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 14/10

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Sun 18/10

20:20-13:45

Nonstop9h 25m

£572

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 13/8

17:00-18:55

Nonstop9h 55m

Seattle/Tacoma Intl

Thu 20/8

21:40-15:05

Nonstop9h 25m

£580

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 23 resultsSorted by cheapest first

1

2

3

Reviews of airlines flying non-stop to Seattle

Check out reviews from past customers who have flown Alaska Airlines,KLM, 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.

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Alaska Airlines

7.9

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

7.8

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Virgin Atlantic

7.5

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

7.0

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

British Airways

6.7

Okay

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

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 £2,150. If you're looking for a direct return flight to Seattle, you can expect to pay around £1,462.
Which airlines fly direct to Seattle?
At the moment, Virgin Atlantic, British Airways, Alaska Airlines, KLM, Air France, Aer Lingus, American Airlines, Finnair, Delta 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, January 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 £1,634.

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