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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 1 October 2026.

Wed 6/112:20 -

Nonstop10h 25m

Wed 13/116:55 -

Nonstop9h 45m

Deal found 28/9£415

Mon 19/1009:50 -

Nonstop9h 45m

Mon 2/1118:45 -

Nonstop9h 25m

Deal found 28/9£415

Wed 25/1114:55 -

Nonstop9h 55m

Sun 29/1118:45 -

Nonstop9h 25m

Deal found 29/9£416

Wed 6/112:20 -

Nonstop10h 25m

Wed 13/116:55 -

Nonstop9h 45m

Deal found 28/9£417

Wed 6/112:20 -

Nonstop10h 25m

Sun 10/116:55 -

Nonstop9h 45m

Deal found 28/9£418

Sun 10/114:55 -

Nonstop9h 55m

Fri 15/118:45 -

Nonstop9h 25m

Deal found 29/9£419

Thu 5/1112:20 -

Nonstop10h 30m

Wed 18/1116:50 -

Nonstop9h 50m

Deal found 27/9£420

Sun 18/1018:30 -

Nonstop10h 25m

Tue 3/1116:50 -

Nonstop9h 50m

Deal found 29/9£421

Thu 12/1112:20 -

Nonstop10h 30m

Thu 26/1116:50 -

Nonstop9h 50m

Deal found 28/9£422

Thu 22/1011:40 -

Nonstop10h 20m

Thu 5/1116:50 -

Nonstop9h 50m

Deal found 29/9£422

Wed 25/1112:20 -

Nonstop10h 30m

Sun 6/1216:50 -

Nonstop9h 50m

Deal found 28/9£424

Sat 24/1017:45 -

Nonstop10h 29m

Tue 27/1017:45 -

Nonstop9h 55m

Deal found 28/9£425

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 7/1

14:45-16:40

Nonstop9h 55m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£392

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Tue 22/12

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£425

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Fri 18/12

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£425

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Mon 21/12

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£425

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Mon 7/12

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Fri 15/1

16:55-10:40

Nonstop9h 45m

£429

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Mon 9/11

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Mon 8/3

17:00-10:40

Nonstop9h 40m

£429

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Fri 13/11

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Sat 13/3

17:00-10:40

Nonstop9h 40m

£429

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Sat 21/11

14:45-17:00

Nonstop10h 15m

Seattle/Tacoma Intl

Mon 23/11

18:45-12:20

Nonstop9h 35m

£430

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Thu 19/11

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Thu 3/12

16:50-10:40

Nonstop9h 50m

£430

LondonSeattle

LHR London Heathrow - SEA Seattle/Tacoma Intl

LHRSEA

London Heathrow

Fri 27/11

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Thu 3/12

16:50-10:40

Nonstop9h 50m

£430

Flights are sorted by cheapest return flights first.

Deals found on 29/9

Showing 1-10 of 24 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 £1,497. If you're looking for a direct return flight to Seattle, you can expect to pay around £2,914.
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 £2,347.

See more FAQs

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