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 21 juni 2026.

lø. 4/717:45

LHR

-

SEA

Nonstop10h 18m

Virgin Atlantic

ma. 13/721:50

SEA

-

LHR

Nonstop9h 45m

Virgin Atlantic

Deal found 19/6£478

to. 9/717:45

LHR

-

SEA

Nonstop10h 18m

Virgin Atlantic

ti. 14/718:15

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 21/6£479

sø. 4/1009:50

LHR

-

SEA

Nonstop9h 45m

British Airways

fr. 9/1013:30

SEA

-

LHR

Nonstop9h 15m

British Airways

Deal found 21/6£480

fr. 28/809:50

LHR

-

SEA

Nonstop9h 45m

Finnair

lø. 5/920:20

SEA

-

LHR

Nonstop9h 25m

Finnair

Deal found 21/6£481

ti. 7/717:45

LHR

-

SEA

Nonstop10h 18m

Virgin Atlantic

ti. 14/718:15

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 18/6£483

ma. 28/909:50

LHR

-

SEA

Nonstop9h 45m

British Airways

lø. 10/1020:20

SEA

-

LHR

Nonstop9h 25m

British Airways

Deal found 19/6£484

lø. 26/917:45

LHR

-

SEA

Nonstop10h 25m

Virgin Atlantic

to. 22/1020:10

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 17/6£486

fr. 7/817:45

LHR

-

SEA

Nonstop10h 18m

Virgin Atlantic

ma. 17/821:45

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 17/6£489

fr. 3/717:45

LHR

-

SEA

Nonstop10h 18m

Virgin Atlantic

ma. 6/721:50

SEA

-

LHR

Nonstop9h 45m

Virgin Atlantic

Deal found 19/6£489

lø. 17/1009:50

LHR

-

SEA

Nonstop9h 45m

Iberia

sø. 1/1118:50

SEA

-

LHR

Nonstop9h 30m

Iberia

Deal found 19/6£491

to. 20/817:45

LHR

-

SEA

Nonstop10h 18m

Virgin Atlantic

ma. 24/821:45

SEA

-

LHR

Nonstop9h 50m

Virgin Atlantic

Deal found 21/6£493

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

ti. 27/10

14:55-17:55

Nonstop10h 00m

Seattle/Tacoma Intl

sø. 8/11

18:50-12:20

Nonstop9h 30m

£480

Fastest return journey

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

to. 15/10

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

ma. 19/10

13:30-06:45

Nonstop9h 15m

£496

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

fr. 3/7

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

ti. 7/7

21:50-15:35

Nonstop9h 45m

£504

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

ti. 7/7

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

ma. 13/7

18:15-12:05

Nonstop9h 50m

£507

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

to. 2/7

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

on. 8/7

21:50-15:35

Nonstop9h 45m

£508

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

fr. 10/7

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

lø. 10/4

21:50-15:35

Nonstop9h 45m

£548

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

ti. 21/7

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

ma. 7/12

16:48-10:30

Nonstop9h 42m

£554

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

ma. 14/9

17:00-19:00

Nonstop10h 00m

Seattle/Tacoma Intl

ma. 21/9

21:40-15:05

Nonstop9h 25m

£576

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

to. 9/7

17:45-20:03

Nonstop10h 18m

Seattle/Tacoma Intl

ti. 21/7

21:50-15:35

Nonstop9h 45m

£585

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

ti. 7/7

09:50-11:35

Nonstop9h 45m

Seattle/Tacoma Intl

on. 29/7

13:30-06:45

Nonstop9h 15m

£588

Flights are sorted by cheapest return flights first.

Deals found on 17/6

Showing 1-10 of 22 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 £1,098. If you're looking for a direct return flight to Seattle, you can expect to pay around £2,391.
Which airlines fly direct to Seattle?
At the moment, Virgin Atlantic, British Airways, KLM, Alaska Airlines, 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 £1,745.

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