Cheap flights from Heathrow to Seattle
How to find the cheapest flight from Heathrow to Seattle
All the information you need to plan the best LHR to SEA flight in 2022: compare Heathrow to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
LHR - SEA Price | £425 - £786 |
|---|---|
SEA Temperature | 5 - 19 °C |
SEA Rainfall | 18 - 168 mm |
| Popular in | July | High demand for flights, 28% potential price rise |
|---|---|---|
| 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 |
How far in advance should I book a flight from London Heathrow Airport to Seattle?
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.
What is the cheapest month to fly from London Heathrow Airport to Seattle?
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 is the cheapest time to fly from London Heathrow Airport to Seattle (LHR - SEA)?
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.
Cheap flights from Heathrow to Seattle in May, June 2022
The best prices found for LHR to SEA flights in May, June
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
Heathrow to Seattle 2022 flight deals
Cheap flights to Seattle from Heathrow found for this year
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
Cheap Lufthansa flights from Heathrow to Seattle
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.
Cheap Air Canada flights from Heathrow to Seattle
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.
Direct flights to Seattle from Heathrow
Save time with Heathrow to Seattle direct flight deals
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
Last-minute flights from Heathrow to Seattle
Late deals on return flights to Seattle from Heathrow, departing today and this week
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
One-way flights to Seattle/Tacoma Intl from Heathrow
The cheapest one-way flights from Heathrow to Seattle
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
Related info for your journey
Useful info, stats and facts about Heathrow to Seattle flights.
What airport do you fly into for flights to Seattle from London Heathrow?
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.
Which airlines flying from London Heathrow to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?
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.
Can I find flights from London Heathrow Airport to Seattle for under £500 on Cheapflights?
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.
Are there nonstop flights from London Heathrow Airport to Seattle for under £500 on Cheapflights?
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.
Are there last-minute flights available from London Heathrow Airport to Seattle for under £600?
There are currently 20+ open flights from London Heathrow Airport to Seattle within the next 7 days for less than £600.
What are the cheapest airlines flying from London Heathrow Airport to Seattle round-trip?
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.
What are the cheapest airlines to fly from London Heathrow Airport to Seattle one-way?
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.
What are the most popular airlines that fly from London Heathrow Airport to Seattle?
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.
What are the most reliable airlines from London Heathrow Airport to Seattle?
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.
What are the cheapest flights 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.
Other flights from Heathrow
Flights to Seattle from Heathrow
Can I fly to Seattle/Tacoma Intl from London Heathrow right now?
Most visitors from London Heathrow need to provide a negative COVID-19 test result and/or quarantine to enter Seattle/Tacoma Intl.
COVID-19 testing requirements
Visitors from London Heathrow must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Seattle/Tacoma Intl.
Quarantine requirements
Visitors from London Heathrow are not required to quarantine after entering Seattle/Tacoma Intl.
Can I fly back to London Heathrow from Seattle/Tacoma Intl?
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 London Heathrow.
Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering London Heathrow.
Alternative routes for Heathrow to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Heathrow to Seattle
The chart below displays the airlines Cheapflights users travelling from Heathrow to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Hourly flight availability from Heathrow to Seattle
See what time of day planes typically take off from Heathrow to Seattle
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 36%of flight departures | Morning6 am to noon |
| 63%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |
Weekly flight availability from Heathrow to Seattle
See how many times per day planes take to the skies headed from Heathrow to Seattle
| Sunday | 14daily flights |
|---|---|
| Monday | 20daily flights |
| Tuesday | 20daily flights |
| Wednesday | 14daily flights |
| Thursday | 19daily flights |
| Friday | 19daily flights |
| Saturday | 19daily flights |