Cheap flights from Seattle (SEA) to United Kingdom

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How to find the cheapest flight from
Seattle (SEA) to United Kingdom

All the information you need to plan the best SEA to LHR flight in 2022: compare Seattle to United Kingdom flight prices with the expected peak season, weather and rainfall in United Kingdom.
What is the cheapest month to fly from Seattle to United Kingdom?

Our data shows that February tends to be the cheapest month to fly to United Kingdom from Seattle. Users have commonly found prices around $902 for the month, but tickets can be as low as $622. Due to multiple factors, prepare for potentially higher prices in June.

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

To save up to 46% on this flight, we recommend booking at least 31 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to United Kingdom from $1,040 1-2 weeks out and tickets from $1,412 for flights departing within the next 72 hours.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to United Kingdom as you normally would.

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

The best prices found for SEA to United Kingdom flights for June, July
26 Jul - 6 Dec
$840pp
SEA
Seattle/Tacoma Intl
Aer Lingus
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
Aer Lingus
 
1 STOP
SEA
Seattle/Tacoma Intl
12 Jul - 25 Oct
$847pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
24 Jul - 2 Dec
$849pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to United Kingdom 2022 flight deals

Cheap flights to United Kingdom from Seattle found for this year
3 Nov - 16 Nov
$545pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
GLA
Glasgow Intl
GLA
Glasgow Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
14 Oct - 24 Oct
$606pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
EDI
Edinburgh Turnhouse
EDI
Edinburgh Turnhouse
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
13 Oct - 22 Oct
$609pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
EDI
Edinburgh Turnhouse
EDI
Edinburgh Turnhouse
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to United Kingdom from Seattle

Save time with Seattle to United Kingdom direct flight deals
5 Oct - 12 Oct
$769pp
SEA
Seattle/Tacoma Intl
Virgin Atlantic
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Virgin Atlantic
Non-Stop
SEA
Seattle/Tacoma Intl
20 Dec - 31 Dec
$798pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
26 Oct - 2 Nov
$816pp
SEA
Seattle/Tacoma Intl
British Airways
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to United Kingdom

Late deals on round-trip flights to United Kingdom from Seattle, departing today and this week
5 Jul - 30 Aug
$971pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
5 Jul - 25 Aug
$972pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
5 Jul - 25 Aug
$1,236pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Aer Lingus
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to United Kingdom from Seattle

The cheapest one-way flights from Seattle to United Kingdom
5:55 pm - 2:40 am
Multiple Airlines
1 Stop
24h 45m
SEA - LGW
Multiple Airlines
$262
Kiwi.com
7:25 pm - 2:40 am
Multiple Airlines
1 Stop
23h 15m
SEA - LGW
Multiple Airlines
$315
Kiwi.com
7:25 pm - 2:40 am
Multiple Airlines
1 Stop
23h 15m
SEA - LGW
Multiple Airlines
$320
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">United Kingdom</span> flights.

Flight FAQs

From Seattle to United Kingdom

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

Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to United Kingdom from Seattle.

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

Some of the carriers operating flights from Seattle/Tacoma Intl to United Kingdom that may be offering flexible cancellation policies are British Airways, Icelandair, and Delta. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Seattle to United Kingdom for under $600 on Cheapflights?

Yes, there are multiple flights from Seattle to United Kingdom for under $600. The cheapest flight booked recently is on Multiple Airlines for just $545, but on average you can expect to pay $648.

Are there nonstop flights from Seattle to United Kingdom for under $800 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to United Kingdom under $800. A good price for a nonstop flight from Seattle to United Kingdom is less than $833.

Are there last-minute flights available from Seattle to United Kingdom for under $1,000?

There are currently 20+ open flights from Seattle to United Kingdom within the next 7 days for less than $1,000.

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

Consider KLM (84%), Air France (84%) or Delta (84%) when booking your flight. These represent the most reliable airlines when flying from Seattle to United Kingdom.

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

While some choose either Seattle/Tacoma Intl - London Gatwick or Seattle/Tacoma Intl - London City, Seattle/Tacoma Intl - London Heathrow is the most popular route from Seattle to United Kingdom.

What are the cheapest flights from Seattle to United Kingdom?

On average you can expect to pay $4,574 for a flight from Seattle to United Kingdom. The cheapest flight overall is $441 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at $707.

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

The most popular airlines flying from Seattle to United Kingdom are American Airlines, Air Canada and Air France. Something to consider prior to booking your flight.

Related searches

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Rent a Car

Car Rentals in United Kingdom Car Rentals at Heathrow

COVID Restrictions

View COVID Travel Restrictions for United Kingdom

Do I need a COVID test to fly to United Kingdom from Seattle?

Information is based on travel restrictions from Seattle/Tacoma Intl to United Kingdom

Most visitors from Seattle/Tacoma Intl can enter United Kingdom without restrictions.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering United Kingdom.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering United Kingdom.

Do I need a test to fly back to Seattle from United Kingdom?

Returning to Seattle/Tacoma Intl from United Kingdom

COVID-19 testing requirements
Visitors from United Kingdom are not required to present a negative COVID-19 PCR test or antigen result upon entering Seattle/Tacoma Intl.

Quarantine requirements
Visitors from United Kingdom are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for United Kingdom

Destination information for United Kingdom

Things to know before you go - useful duration and weather info for your trip from Seattle to United Kingdom.
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Airports servicing Seattle

Top 10 airlines flying from Seattle/Tacoma Intl to United Kingdom

The chart below displays the airlines Cheapflights users traveling from Seattle to United Kingdom choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Juneyao Airlines
$10 $18 No cancel fee 66%

We couldn't confirm the COVID-19 safety measures taken by Juneyao Airlines. Please check directly on their website for additional information.

Norwegian Air UK
$377 $635 No cancel fee N/A
Norwegian
$403 $697 No cancel fee 74%
American Airlines
$435 $1,090 No cancel fee 71%
Austrian Airlines
$438 $877 No cancel fee 78%
Malta MedAir
$476 $743 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by Malta MedAir. Please check directly on their website for additional information.

Iberia
$480 $742 No cancel fee 77%
Delta
$515 $952 No cancel fee N/A
United Airlines
$519 $876 No cancel fee 69%
Air Canada
$525 $985 No cancel fee 67%
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