Cheap flights from London to Seattle-Tacoma International

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The best prices from London to Seattle-Tacoma International are usually found in October or September, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

How to find the cheapest flight from
London (LON) to Seattle-Tacoma International (SEA)

LON - SEA
Price
£369 - £623
Popular in July High demand for flights, 26% potential price rise
Cheapest in October Best time to find cheap flights, 20% potential price drop
Average price £381 Average for round-trip flights in septiembre 2020
Round-trip from €369 From London to Seattle-Tacoma International
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly return from London to Seattle-Tacoma International?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 16% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from London to Seattle-Tacoma International?

To save up to 31% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from London to Seattle-Tacoma International from £425 1-2 weeks out and tickets from £515 for flights departing within the next 72 hours.

What is the cheapest month to fly from London to Seattle-Tacoma International?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, October can be a great choice for travel to Seattle-Tacoma International. Flights to Seattle-Tacoma International from London in October are about £462 on average during October, but can be found for as low as £319.

When is the cheapest time to fly from London to Seattle-Tacoma International (LON - SEA)?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 11% on flights from London to Seattle-Tacoma International by exploring options for tickets at midday.

Cheap flights from London to Seattle-Tacoma International in September, October 2020

The best prices found for LON to SEA flights in September, October
28 Oct - 11 Nov
£385pp
LHR
London Heathrow
Lufthansa
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Lufthansa
   
2 STOPS
LHR
London Heathrow
28 Oct - 11 Nov
£400pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Austrian Airlines
 
1 STOP
LHR
London Heathrow
28 Oct - 11 Nov
£407pp
LHR
London Heathrow
KLM
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
KLM
 
1 STOP
LHR
London Heathrow

London to Seattle-Tacoma International 2020 flight deals

Cheap flights to Seattle-Tacoma International from London found for this year
28 Oct - 11 Nov
£385pp
LHR
London Heathrow
Lufthansa
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Lufthansa
   
2 STOPS
LHR
London Heathrow
30 Dec - 12 Jan
£388pp
LHR
London Heathrow
Lufthansa
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Lufthansa
 
1 STOP
LHR
London Heathrow
21 Nov - 5 Dec
£399pp
LHR
London Heathrow
Lufthansa
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Lufthansa
 
1 STOP
LHR
London Heathrow

Direct flights to Seattle-Tacoma International from London

Save time with London to Seattle-Tacoma International direct flight deals
31 Jan - 9 Feb
£412pp
LHR
London Heathrow
KLM
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
KLM
Direct
LHR
London Heathrow
30 Jan - 13 Feb
£414pp
LHR
London Heathrow
KLM
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
KLM
Direct
LHR
London Heathrow
21 Nov - 22 Feb
£415pp
LHR
London Heathrow
Multiple airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Iberia
Direct
LHR
London Heathrow

Last-minute flights from London to Seattle-Tacoma International

Late deals on return flights to Seattle-Tacoma International from London, departing today and this week
25 Sep - 27 Sep
£562pp
LHR
London Heathrow
Lufthansa
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Lufthansa
 
1 STOP
LHR
London Heathrow
25 Sep - 26 Sep
£606pp
LHR
London Heathrow
Finnair
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Finnair
   
2 STOPS
LHR
London Heathrow
25 Sep - 27 Sep
£878pp
LCY
London City
KLM
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
KLM
 
1 STOP
LCY
London City

One-way flights to Seattle-Tacoma International from London

The cheapest one-way flights from London to Seattle-Tacoma International
12:50 - 06:25
Virgin Atlantic
1 stop
25h 35m
LCY - SEA
Virgin Atlantic
£289
Travelgenio
07:30 - 19:20
KLM
1 stop
19h 50m
LHR - SEA
KLM
£293
KLM
16:35 - 05:37
Multiple Airlines
3 stops
45h 02m
LGW - SEA
Multiple Airlines
£296
Kiwi.com

Related info for your journey

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

Flight FAQs

From London to Seattle-Tacoma International

Are flight prices decreasing from London to Redmond 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 London and Redmond 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 London to Seattle-Tacoma International for under £400 on Cheapflights?

Yes, there are multiple flights from London to Seattle-Tacoma International for under £400. The cheapest flight booked recently is on Lufthansa for just £385, but on average you can expect to pay £405.

Are there direct flights from London to Seattle-Tacoma International for under £500 on Cheapflights?

Cheapflights has 20 direct flights from London to Seattle-Tacoma International under £500. A good price for a direct flight from London to Seattle-Tacoma International is less than £435.

Are there last-minute flights available from London to Seattle-Tacoma International for under £600?

There are currently 6+ open flights from London to Seattle-Tacoma International within the next 7 days for less than £600.

How long does is the flight from London to Seattle-Tacoma International?

Airlines like British Airways, Finnair, and Icelandair fly from London to Seattle-Tacoma International in about 10h. The time it takes to get you to your destination can typically vary by up to 2h 50m. This flight may include one or multiple stops.

What are the cheapest airlines to flying from London to Seattle-Tacoma International return?

Flying on Lufthansa is currently your cheapest option to Seattle-Tacoma International, with prices starting at £298. Additional return tickets that might be worth considering are offered by KLM and British Airways, with the lowest prices starting at £310 and £314, respectively. Lufthansa is 35% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from London to Seattle-Tacoma International one-way?

£247 is the cheapest one-way deal found within the past few days, from KLM. You may also be able to find cheap deals on Virgin Atlantic and Delta, with prices starting from £261 and £272, respectively.

Alternative routes for London to Seattle-Tacoma International

Destination information for Seattle-Tacoma International

Things to know before you go. Useful info for your trip from London to Seattle-Tacoma International
Today's exchange rate
£1 = $1.30
Flight duration
9h 42m

Airports servicing London

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

Airports servicing Seattle

Hourly flight availability from London to Seattle-Tacoma International

Afternoon Midday to 6 PM 100% of flight departures
Early morning Midnight to 6 AM 0% of flight departures
Morning 6 AM to midday 0% of flight departures
Evening 6 PM to midnight 0% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from London to Seattle-Tacoma International
Sunday
5 daily flights
Monday
0 flights
Tuesday
0 flights
Wednesday
5 daily flights
Thursday
0 flights
Friday
5 daily flights
Saturday
0 flights
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