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 27 July 2026.

Wed 12/809:50

LHR

-

SEA

Nonstop9h 45m

British Airways

Sun 16/820:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 22/7£496

Thu 24/911:40

LHR

-

SEA

Nonstop10h 20m

Virgin Atlantic

Fri 2/1021:50

SEA

-

LHR

Nonstop9h 45m

Virgin Atlantic

Deal found 26/7£500

Tue 8/917:45

LHR

-

SEA

Nonstop10h 25m

Virgin Atlantic

Tue 15/921:50

SEA

-

LHR

Nonstop9h 45m

Virgin Atlantic

Deal found 25/7£507

Mon 7/917:45

LHR

-

SEA

Nonstop10h 25m

Virgin Atlantic

Mon 14/921:50

SEA

-

LHR

Nonstop9h 45m

Virgin Atlantic

Deal found 24/7£512

Mon 21/911:40

LHR

-

SEA

Nonstop10h 20m

Virgin Atlantic

Tue 29/917:30

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 23/7£514

Mon 21/917:45

LHR

-

SEA

Nonstop10h 25m

Virgin Atlantic

Mon 28/921:50

SEA

-

LHR

Nonstop9h 45m

Virgin Atlantic

Deal found 23/7£517

Thu 15/1017:45

LHR

-

SEA

Nonstop10h 29m

Virgin Atlantic

Wed 21/1017:30

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 24/7£520

Sun 27/918:30

LHR

-

SEA

Nonstop10h 23m

Virgin Atlantic

Sun 4/1021:50

SEA

-

LHR

Nonstop9h 45m

Virgin Atlantic

Deal found 23/7£521

Mon 28/911:40

LHR

-

SEA

Nonstop10h 20m

Virgin Atlantic

Mon 5/1021:50

SEA

-

LHR

Nonstop9h 45m

Virgin Atlantic

Deal found 22/7£522

Thu 1/1011:40

LHR

-

SEA

Nonstop10h 20m

Virgin Atlantic

Thu 8/1017:30

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 22/7£523

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

Wed 16/12

12:20-14:45

Nonstop10h 25m

Seattle/Tacoma Intl

Fri 1/1

16:45-10:30

Nonstop9h 45m

£544

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 27/10

12:20-15:54

Nonstop10h 34m

Seattle/Tacoma Intl

Sun 8/11

16:50-10:40

Nonstop9h 50m

£545

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 13/11

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Sat 28/11

18:55-12:20

Nonstop9h 25m

£551

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 24/10

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

Sat 31/10

14:40-07:10

Nonstop9h 30m

£554

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

£555

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 13/11

12:20-14:45

Nonstop10h 25m

Seattle/Tacoma Intl

Wed 25/11

16:48-10:30

Nonstop9h 42m

£557

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 4/9

17:00-19:00

Nonstop10h 00m

Seattle/Tacoma Intl

Mon 21/9

21:40-15:05

Nonstop9h 25m

£559

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 23/11

14:45-16:50

Nonstop10h 05m

Seattle/Tacoma Intl

Wed 20/1

18:55-12:20

Nonstop9h 25m

£560

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 17/11

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Wed 20/1

16:55-10:40

Nonstop9h 45m

£560

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 18/11

12:20-14:50

Nonstop10h 30m

Seattle/Tacoma Intl

Wed 20/1

16:55-10:40

Nonstop9h 45m

£560

Flights are sorted by cheapest return flights first.

Deals found on 23/7

Showing 1-10 of 20 resultsSorted by cheapest first

1

2

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 £1,910. If you're looking for a direct return flight to Seattle, you can expect to pay around £2,499.
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 £2,302.

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