Cheap flights from the United Kingdom to Seattle

LHR — SEA
17 May — 24 May1
Return
1 adult
Economy
From?
To?
Tue 17/5
Tue 24/5

How far in advance should I book a flight from United Kingdom to Seattle?

To save up to 51% on this flight, we recommend booking at least 52 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from United Kingdom to Seattle from £503 1-2 weeks out and tickets from £659 for flights departing within the next 72 hours.

What is the cheapest month to fly from United Kingdom to Seattle?

February can be a great time to fly to Seattle from United Kingdom with a flight ticket averaging about £444. Cheapflights users have found deals in the month of February for as cheap as £292. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from United Kingdom to Seattle (GB - SEA)?

When flying from United Kingdom to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from United Kingdom to Seattle in May, June 2022

The best prices found for United Kingdom to SEA flights in May, June
6 Jun - 12 Jun
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

31h 50m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

17h 15m
£465

Icelandair

View Deal

Deal found 11/5/22

26 Jun - 10 Jul
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

31h 50m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

17h 15m
£469

Icelandair

View Deal

Deal found 11/5/22

26 May - 24 Sep
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

14h 00m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

2 stops

20h 21m
£472

United Airlines

View Deal

Deal found 12/5/22

United Kingdom to Seattle 2022 flight deals

Cheap flights to Seattle from United Kingdom found for this year
20 Sep - 4 Oct
LGW

London Gatwick

SEA

Seattle/Tacoma Intl

1 stop

16h 10m
SEA

Seattle/Tacoma Intl

LGW

London Gatwick

1 stop

12h 00m
£422

Icelandair

View Deal

Deal found 12/5/22

12 Oct - 24 Oct
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

12h 50m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

12h 05m
£426

Icelandair

View Deal

Deal found 11/5/22

7 Sep - 21 Sep
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

16h 10m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

17h 15m
£431

Icelandair

View Deal

Deal found 11/5/22

Cheap Icelandair flights from United Kingdom to Seattle

12 Oct - 24 Oct
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

12h 50m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

12h 05m
£426

Icelandair

View Deal

Deal found 11/5/22

7 Sep - 21 Sep
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

16h 10m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

17h 15m
£431

Icelandair

View Deal

Deal found 11/5/22

7 Sep - 21 Sep
LGW

London Gatwick

SEA

Seattle/Tacoma Intl

1 stop

16h 10m
SEA

Seattle/Tacoma Intl

LGW

London Gatwick

1 stop

32h 45m
£432

Icelandair

View Deal

Deal found 11/5/22

Cheap KLM flights from United Kingdom to Seattle

24 May - 26 Sep
BHX

Birmingham

SEA

Seattle/Tacoma Intl

2 stops

17h 45m
SEA

Seattle/Tacoma Intl

BHX

Birmingham

2 stops

17h 01m
£537

KLM

View Deal

Deal found 10/5/22

14 Sep - 20 Sep
LCY

London City

SEA

Seattle/Tacoma Intl

1 stop

13h 55m
SEA

Seattle/Tacoma Intl

LCY

London City

1 stop

15h 15m
£551

KLM

View Deal

Deal found 11/5/22

1 Jun - 26 Sep
BHX

Birmingham

SEA

Seattle/Tacoma Intl

1 stop

17h 55m
SEA

Seattle/Tacoma Intl

BHX

Birmingham

2 stops

17h 01m
£555

KLM

View Deal

Deal found 10/5/22

Direct flights to Seattle from United Kingdom

Save time with United Kingdom to Seattle direct flight deals
3 Nov - 15 Nov
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

Nonstop

10h 20m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

Nonstop

9h 25m
£492

British Airways

View Deal

Deal found 11/5/22

19 Oct - 13 Nov
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

Nonstop

9h 45m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

Nonstop

9h 25m
£493

Finnair

View Deal

Deal found 10/5/22

22 Jun - 27 Jun
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

Nonstop

10h 10m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

Nonstop

9h 40m
£503

Virgin Atlantic

View Deal

Deal found 9/5/22

Last-minute flights from United Kingdom to Seattle

Late deals on return flights to Seattle from United Kingdom, departing today and this week
18 May - 1 Jun
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

19h 37m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

14h 20m
£549

Air Canada

View Deal

Deal found 11/5/22

18 May - 7 Jun
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

16h 10m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

17h 15m
£554

Icelandair

View Deal

Deal found 11/5/22

21 May - 7 Jun
LHR

London Heathrow

SEA

Seattle/Tacoma Intl

1 stop

31h 50m
SEA

Seattle/Tacoma Intl

LHR

London Heathrow

1 stop

17h 15m
£555

Icelandair

View Deal

Deal found 11/5/22

One-way flights to Seattle/Tacoma Intl from United Kingdom

The cheapest one-way flights from United Kingdom to Seattle
20 Sep
STN

London Stansted

SEA

Seattle/Tacoma Intl

2 stops

32h 47m
£262

Multiple Airlines

View Deal

Deal found 10/5/22

3 Sep
STN

London Stansted

SEA

Seattle/Tacoma Intl

2 stops

34h 15m
£272

Multiple Airlines

View Deal

Deal found 10/5/22

24 Sep
STN

London Stansted

SEA

Seattle/Tacoma Intl

2 stops

34h 17m
£275

Multiple Airlines

View Deal

Deal found 10/5/22

Related info for your journey

Useful info, stats and facts about United Kingdom to Seattle flights.

What airport do you fly into for flights to Seattle from United Kingdom?

For a flight from United Kingdom to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

Which airlines flying from United Kingdom to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

British Airways, Virgin Atlantic, and Lufthansa are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from United Kingdom to Seattle for under £500 on Cheapflights?

Yes, there are multiple flights from United Kingdom to Seattle for under £500. The cheapest flight booked recently is on Icelandair for just £426, but on average you can expect to pay £445.

Are there nonstop flights from United Kingdom to Seattle for under £500 on Cheapflights?

Cheapflights has at least 20 direct flights from United Kingdom to Seattle under £500. A good price for a nonstop flight from United Kingdom to Seattle is less than £513.

Are there last-minute flights available from United Kingdom to Seattle for under £600?

There are currently 20+ open flights from United Kingdom to Seattle within the next 7 days for less than £600.

What are the most popular routes from United Kingdom to Seattle?

The most popular flight routes from United Kingdom to Seattle are London Heathrow - Seattle/Tacoma Intl, London Gatwick - Seattle/Tacoma Intl and London City - Seattle/Tacoma Intl.

What are the most popular airlines that fly from United Kingdom to Seattle?

American Airlines, Air Canada and Air France are the most popular airlines when flying from United Kingdom to Seattle.

What are the most reliable airlines from United Kingdom to Seattle?

The top 3 most reliable airlines when flying from United Kingdom to Seattle are Alaska Airlines (96%), American Airlines (77%) and Finnair (77%).

What are the cheapest flights from United Kingdom to Seattle?

Looking for the cheapest flight from United Kingdom to Seattle? While on average our users pay £1,609, our data indicates the cheapest price to be £399. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around £426.

Departure points for flights from United Kingdom to Seattle

Select to see more specific information for flights to Seattle from all departure points in United Kingdom

Top 5 airlines flying from United Kingdom to Seattle

The chart below displays the airlines Cheapflights users travelling from United Kingdom to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Norwegian Air UKCheapest£314Average£574FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Norwegian Air UK flights
DeltaCheapest£322Average£782FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
United AirlinesCheapest£333Average£558FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
NorwegianCheapest£346Average£472FlexibilityNo cancel feeOn-time74%COVID-19 safety
Search Norwegian flights
IcelandairCheapest£367Average£550FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Icelandair flights

Hourly flight availability from United Kingdom to Seattle

See what time of day planes typically take off from United Kingdom to Seattle
1%of flight departuresEarly morningMidnight to 6 am
36%of flight departuresMorning6 am to noon
63%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM