LHR - SEA Price | £425 - £786 |
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SEA Temperature | 5 - 19 °C |
SEA Rainfall | 18 - 168 mm |
Popular in | July | High demand for flights, 28% potential price rise |
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Cheapest in | February | Best time to find cheap flights, 25% potential price drop |
Average price | £388 | Average for round-trip flights in May 2022 |
Round-trip from | £339 | From London Heathrow to Seattle/Tacoma Intl |
Find a great deal and save up to 51% by booking at least 52 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London Heathrow Airport to Seattle within the next two weeks, with the cheapest ticket starting at £494.
Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to Seattle. Flights to Seattle from London Heathrow Airport in February are about £436 on average during February, but can be found for as low as £287.
When flying from London Heathrow Airport 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.
London Heathrow
Seattle/Tacoma Intl
2 stops
32h 22mSeattle/Tacoma Intl
London Heathrow
1 stop
14h 20mLufthansa
London Heathrow
Seattle/Tacoma Intl
2 stops
34h 52mSeattle/Tacoma Intl
London Heathrow
2 stops
40h 30mAir Canada
London Heathrow
Seattle/Tacoma Intl
2 stops
34h 52mSeattle/Tacoma Intl
London Heathrow
2 stops
21h 55mAir Canada
London Heathrow
Seattle/Tacoma Intl
1 stop
16h 10mSeattle/Tacoma Intl
London Heathrow
1 stop
20h 30mIcelandair
London Heathrow
Seattle/Tacoma Intl
1 stop
16h 10mSeattle/Tacoma Intl
London Heathrow
1 stop
20h 30mIcelandair
London Heathrow
Seattle/Tacoma Intl
1 stop
16h 10mSeattle/Tacoma Intl
London Heathrow
1 stop
12h 05mIcelandair
London Heathrow
Seattle/Tacoma Intl
1 stop
14h 00mSeattle/Tacoma Intl
London Heathrow
1 stop
12h 45mLufthansa
London Heathrow
Seattle/Tacoma Intl
1 stop
14h 00mSeattle/Tacoma Intl
London Heathrow
1 stop
12h 20mLufthansa
London Heathrow
Seattle/Tacoma Intl
1 stop
17h 23mSeattle/Tacoma Intl
London Heathrow
1 stop
14h 20mLufthansa
One of the most popular airlines travelling from London Heathrow Airport to Seattle is Lufthansa. Flights from Lufthansa travelling this route typically cost £836.98 RT. This price is typically 54% cheaper than other airlines that offer London Heathrow Airport to Seattle flights. When booking this route, the cheapest RT price found was £592. The most popular departure airport in London Heathrow Airport when flying to Seattle is London Heathrow Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from London Heathrow Airport to Seattle, Lufthansa flights are 8% more popular than any other airline flying that same route.
London Heathrow
Seattle/Tacoma Intl
2 stops
34h 52mSeattle/Tacoma Intl
London Heathrow
2 stops
21h 55mAir Canada
London Heathrow
Seattle/Tacoma Intl
2 stops
27h 58mSeattle/Tacoma Intl
London Heathrow
2 stops
31h 00mAir Canada
London Heathrow
Seattle/Tacoma Intl
1 stop
16h 02mSeattle/Tacoma Intl
London Heathrow
2 stops
29h 30mAir Canada
Air Canada is one of the most popular airlines used for those travelling from London Heathrow Airport to Seattle. Flights from Air Canada travelling this route typically cost £738.36 RT. This price is typically 64% more expensive than other airlines that offer London Heathrow Airport to Seattle flights. When booking this route, the cheapest RT price found was £397. The most popular departure airport in London Heathrow Airport when flying to Seattle is London Heathrow Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from London Heathrow Airport to Seattle, Air Canada flights are 7% more popular than any other airline flying that same route.
London Heathrow
Seattle/Tacoma Intl
Nonstop
9h 45mSeattle/Tacoma Intl
London Heathrow
Nonstop
9h 25mBritish Airways
London Heathrow
Seattle/Tacoma Intl
Nonstop
10h 20mSeattle/Tacoma Intl
London Heathrow
Nonstop
9h 45mVirgin Atlantic
London Heathrow
Seattle/Tacoma Intl
Nonstop
9h 45mSeattle/Tacoma Intl
London Heathrow
Nonstop
9h 25mVirgin Atlantic
London Heathrow
Seattle/Tacoma Intl
1 stop
11h 37mSeattle/Tacoma Intl
London Heathrow
1 stop
12h 20mMultiple Airlines
London Heathrow
Seattle/Tacoma Intl
1 stop
11h 37mSeattle/Tacoma Intl
London Heathrow
1 stop
12h 20mLufthansa
London Heathrow
Seattle/Tacoma Intl
1 stop
31h 50mSeattle/Tacoma Intl
London Heathrow
1 stop
17h 15mIcelandair
London Heathrow
Seattle/Tacoma Intl
2 stops
29h 37mScandinavian Airlines
London Heathrow
Seattle/Tacoma Intl
2 stops
29h 37mMultiple Airlines
London Heathrow
Seattle/Tacoma Intl
2 stops
29h 37mMultiple Airlines
If you book a flight to Seattle from London Heathrow, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 17 flights from London Heathrow to Seattle/Tacoma Intl per day from 15 different airlines.
Some of our airline partners flying from London Heathrow to Seattle/Tacoma Intl have new flexible policies in place due to COVID-19. Virgin Atlantic, British Airways, and Finnair are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like Virgin Atlantic with this kind of flexibility.
Yes, there are multiple flights from London Heathrow Airport to Seattle for under £500. The cheapest flight booked recently is on Icelandair for just £425, but on average you can expect to pay £446.
Cheapflights has at least 20 direct flights from London Heathrow Airport to Seattle under £500. A good price for a nonstop flight from London Heathrow Airport to Seattle is less than £523.
There are currently 20+ open flights from London Heathrow Airport to Seattle within the next 7 days for less than £600.
According to our current data, Icelandair (£425), Lufthansa (£451), and United Airlines (£454) offers the cheapest pricing from London Heathrow Airport to Seattle. Icelandair is priced at 5% lower than the current average price of a flight leaving 3 months from now.
The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as £289. However, be on the lookout for offers from Virgin Atlantic and WestJet, as they are both options that can get you from London Heathrow Airport to Seattle for a low price.
When booking a flight from London Heathrow Airport to Seattle, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.
Consider Alaska Airlines (91%), American Airlines (75%) or Finnair (75%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Seattle.
The cheapest flight price from London Heathrow Airport to Seattle is £436. On average you can expect to pay £1,992. The most popular route, (London Heathrow - Seattle/Tacoma Intl), can usually be booked for £425.
1%of flight departures | Early morningMidnight to 6 am |
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36%of flight departures | Morning6 am to noon |
63%of flight departures | AfternoonNoon to 6 pm |
0%of flight departures | Evening6 pm to midnight |
Sunday | 14daily flights |
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Monday | 20daily flights |
Tuesday | 20daily flights |
Wednesday | 14daily flights |
Thursday | 19daily flights |
Friday | 19daily flights |
Saturday | 19daily flights |