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Cheap flights from Seattle (SEA) to Heathrow (LHR)

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Cheap flights from Seattle to Heathrow in April 2020

The best prices found for SEA to LHR flights for April
29 Apr - 6 May
$361pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl
15 Apr - 22 Apr
$367pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Apr - 6 May
$371pp
SEA
Seattle/Tacoma Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to Heathrow 2020 flight deals

Cheap flights to Heathrow from Seattle found for this year
15 Oct - 18 Oct
$338pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
16 Nov - 24 Nov
$354pp
SEA
Seattle/Tacoma Intl
Lufthansa
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Lufthansa
 
1 STOP
SEA
Seattle/Tacoma Intl
14 Oct - 21 Oct
$362pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to Heathrow from Seattle

Save time with Seattle to Heathrow direct flight deals
5 May - 12 May
$385pp
SEA
Seattle/Tacoma Intl
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
SEA
Seattle/Tacoma Intl
4 May - 15 May
$390pp
SEA
Seattle/Tacoma Intl
Finnair
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
SEA
Seattle/Tacoma Intl
1 May - 13 May
$400pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Heathrow

Late deals on round-trip flights to Heathrow from Seattle, departing today and this week
8 Apr - 29 Apr
$405pp
SEA
Seattle/Tacoma Intl
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
SEA
Seattle/Tacoma Intl
6 Apr - 13 Apr
$424pp
SEA
Seattle/Tacoma Intl
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
Non-Stop
SEA
Seattle/Tacoma Intl
7 Apr - 17 Apr
$461pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to Heathrow from Seattle

The cheapest one-way flights from Seattle to Heathrow
11:15 am - 4:40 am
Singapore Airlines
Nonstop
9h 25m
SEA - LHR
Singapore Airlines
$337
Fareboom
3:20 pm - 8:40 am
Aer Lingus
Nonstop
9h 20m
SEA - LHR
Aer Lingus
$452
Fareboom
11:15 am - 4:40 am
Delta
Nonstop
9h 25m
SEA - LHR
Delta
$463
Delta

Alternative routes for Seattle to Heathrow

Destination information for Heathrow

Things to know before you go. Useful info for your trip from Seattle to Heathrow
Today's exchange rate
$1 = £0.81
Flight duration
9h 33m
Average temperature for April in Heathrow
57.2 °F
Avg rainfall for April in Heathrow
1.9 ″

Airports servicing Seattle

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

Airports servicing London

Related info for your journey

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

Flight FAQs

From Seattle to Heathrow

Are flight prices decreasing from Seattle to Heathrow 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 Heathrow 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 Heathrow for under $400 on Cheapflights?

Yes, there are multiple flights from Seattle to Heathrow for under $400. The cheapest flight booked recently is on Icelandair for just $361, but on average you can expect to pay $366.

Are there nonstop flights from Seattle to Heathrow for under $400 on Cheapflights?

Cheapflights has 3 direct flights from Seattle to Heathrow under $400. A good price for a nonstop flight from Seattle to Heathrow is less than $392.

Are there last-minute flights available from Seattle to Heathrow for under $400?

There are currently just 3 open flights from Seattle to Heathrow within the next 7 days for less than $400.

What days are nonstop flights available from Seattle to Heathrow?

You can find nonstop flights on the following days: Tuesday, Thursday, Saturday.

What percent of flights are delayed?

Airlines departing from Seattle to Heathrow can be delayed by up to 91min. or more hours.

What is the cheapest airline for this route?

When searching, try setting your filters to view flights for British Airways, as currently they have the cheapest options available from Seattle to Heathrow. On average you can find 29 flights for this flight path daily.

How long does the flight from Seattle to Heathrow take?

A nonstop flight takes up to 10 hours, covering a distance of 2,990 miles.

How many flights depart from Seattle to Heathrow on average per day?

28 flight departures from Seattle to London Heathrow per day on average.
Afternoon (Noon - 6pm) - 54% of flight departures
Evening (6pm - Midnight) - 46% of flight departures

Is Seattle weather warmer or cooler than Heathrow?

We forecast the temperature to be around the 77 °F's in July, on average. The temperature in Heathrow is generally colder than in Seattle. Book flights in a timely manner in correlation to your departure date.