Direct flights to Seattle | Cheapflights

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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 22 August 2026.

Thu 22/1017:00 -

Nonstop10h 00m

Tue 3/1118:55 -

Nonstop9h 25m

Deal found 17/8£518

Tue 6/1017:00 -

Nonstop10h 00m

Wed 21/1021:40 -

Nonstop9h 25m

Deal found 19/8£519

Tue 20/1017:00 -

Nonstop10h 00m

Tue 27/1019:40 -

Nonstop9h 40m

Deal found 20/8£520

Mon 28/917:00 -

Nonstop10h 00m

Wed 28/1019:40 -

Nonstop9h 40m

Deal found 20/8£520

Wed 21/1017:00 -

Nonstop10h 00m

Thu 5/1118:55 -

Nonstop9h 25m

Deal found 21/8£521

Thu 5/1114:45 -

Nonstop10h 05m

Sun 15/1118:55 -

Nonstop9h 25m

Deal found 19/8£525

Tue 29/917:00 -

Nonstop10h 00m

Wed 7/1021:40 -

Nonstop9h 25m

Deal found 17/8£528

Thu 1/1017:00 -

Nonstop10h 00m

Mon 19/1021:40 -

Nonstop9h 25m

Deal found 20/8£530

Wed 4/1114:45 -

Nonstop10h 05m

Sun 15/1118:55 -

Nonstop9h 25m

Deal found 22/8£531

Mon 5/1009:50 -

Nonstop9h 45m

Mon 12/1020:20 -

Nonstop9h 25m

Deal found 21/8£531

Thu 15/1017:45 -

Nonstop10h 29m

Thu 29/1017:45 -

Nonstop9h 55m

Deal found 20/8£533

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 London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Thu 1/10

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Thu 8/10

13:30-06:45

Nonstop9h 15m

£552

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Wed 30/9

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Sun 4/10

20:20-13:45

Nonstop9h 25m

£553

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Sat 26/12

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Tue 5/1

16:55-10:40

Nonstop9h 45m

£555

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Fri 25/9

17:00-19:00

Nonstop10h 00m

Seattle/Tacoma Intl

Sat 3/10

21:40-15:05

Nonstop9h 25m

£556

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Thu 1/10

17:00-19:00

Nonstop10h 00m

Seattle/Tacoma Intl

Fri 30/10

19:40-12:20

Nonstop9h 40m

£556

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Thu 1/10

17:00-19:00

Nonstop10h 00m

Seattle/Tacoma Intl

Sat 10/10

21:40-15:05

Nonstop9h 25m

£556

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Fri 16/10

17:00-19:00

Nonstop10h 00m

Seattle/Tacoma Intl

Sat 31/10

19:40-12:20

Nonstop9h 40m

£557

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Sat 26/12

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Sat 9/1

16:55-10:40

Nonstop9h 45m

£558

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Wed 30/9

17:00-19:00

Nonstop10h 00m

Seattle/Tacoma Intl

Sat 31/10

19:40-12:20

Nonstop9h 40m

£566

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Thu 15/10

16:30-18:25

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 19/10

13:30-06:45

Nonstop9h 15m

£566

Flights are sorted by cheapest return flights first.

Deals found on 17/8

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 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

7.4

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.

6.9

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.

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 £1,433. If you're looking for a direct return flight to Seattle, you can expect to pay around £1,035.
Which airlines fly direct to Seattle?
At the moment, Virgin Atlantic, British Airways, Alaska Airlines, KLM, Air France, Aer Lingus, American Airlines, Delta, Finnair 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 £1,234.

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