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Cheap flights from Seattle (SEA) to London (LON)

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Cheap flights from Seattle to London in May, June 2020

The best prices found for SEA to LGW flights for May, June
21 Jun - 8 Jul
$524pp
SEA
Seattle/Tacoma Intl
$self.airline
   
2 STOPS
LGW
London Gatwick
LGW
London Gatwick
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
21 Jun - 8 Jul
$536pp
SEA
Seattle/Tacoma Intl
$self.airline
   
2 STOPS
LGW
London Gatwick
LGW
London Gatwick
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
3 Jun - 10 Jun
$543pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to London 2020 flight deals

Cheap flights to London from Seattle found for this year
3 Nov - 10 Nov
$423pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
22 Sep - 29 Sep
$427pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
14 Sep - 29 Sep
$429pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to London from Seattle

Save time with Seattle to London direct flight deals
22 Jul - 29 Jul
$585pp
SEA
Seattle/Tacoma Intl
Norwegian Air UK
Non-Stop
LGW
London Gatwick
LGW
London Gatwick
Norwegian Air UK
Non-Stop
SEA
Seattle/Tacoma Intl
10 Jun - 3 Aug
$602pp
SEA
Seattle/Tacoma Intl
Norwegian Air UK
Non-Stop
LGW
London Gatwick
LGW
London Gatwick
Norwegian Air UK
Non-Stop
SEA
Seattle/Tacoma Intl
8 Jul - 13 Jul
$634pp
SEA
Seattle/Tacoma Intl
Norwegian Air UK
Non-Stop
LGW
London Gatwick
LGW
London Gatwick
Norwegian Air UK
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to London

Late deals on round-trip flights to London from Seattle, departing today and this week
26 May - 31 May
$754pp
SEA
Seattle/Tacoma Intl
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
SEA
Seattle/Tacoma Intl
28 May - 14 Jun
$758pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
27 May - 14 Jun
$775pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to London from Seattle

The cheapest one-way flights from Seattle to London
9:45 am - 3:00 am
Norwegian Air UK
Nonstop
9h 15m
SEA - LGW
Norwegian Air UK
$245
KAYAK
11:50 am - 7:45 am
Icelandair
1 Stop
11h 55m
SEA - LHR
Icelandair
$282
StudentUniverse
2:10 am - 6:20 am
TAP AIR PORTUGAL
2 Stops
20h 10m
SEA - LHR
TAP AIR PORTUGAL
$348
FlightNetwork

Related info for your journey

Useful info, stats and facts about Seattle to London flights.

Flight FAQs

From Seattle to London

Are flight prices decreasing from Seattle to London due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and London for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Seattle to London for under $500 on Cheapflights?

Yes, there are multiple flights from Seattle to London for under $500. The cheapest flight booked recently is on Icelandair for just $423, but on average you can expect to pay $441.

Are there nonstop flights from Seattle to London for under $600 on Cheapflights?

Cheapflights has at least 6 direct flights from Seattle to London under $600. A good price for a nonstop flight from Seattle to London is less than $714.

Are there last-minute flights available from Seattle to London for under $800?

There are currently 5+ open flights from Seattle to London within the next 7 days for less than $800.

How popular is this flight route?

Within the past month, 11 users have taken a look at flights from Seattle to London.

What is the cheapest airline for this route?

While looking for the best option consider British Airways, our data currently shows that they have the cheapest flight available for the flight path. When traveling from Seattle to London, generally 29 flights depart for this route daily.

Is Seattle weather warmer or cooler than London?

Our data indicates that the weather will be 77 °F on average in the month of July. The temperature in London is typically colder than in Seattle. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

Destination information for London

Things to know before you go. Useful info for your trip from Seattle to London
Today's exchange rate
$1 = £0.83
Average temperature for May in London
64.4 °F
Avg rainfall for May in London
2.0 ″

Airports servicing Seattle

Seattle King County/Boeing (BFI)
Seattle Lake Union Spb (LKE)

Airports servicing London

Heathrow (LHR)
Luton (LTN)
Stansted (STN)
City (LCY)
Southend (SEN)

Hourly flight availability

Afternoon Noon to 6 PM 100% of flight departures
Early morning Midnight to 6 AM 0% of flight departures
Morning 6 AM to noon 0% of flight departures
Evening 6 PM to midnight 0% of flight departures
Midnight
6 AM
Noon
6 PM