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Cheap Flights from London Heathrow to Seattle / Tacoma International

Compare London Heathrow to Seattle / Tacoma International flight deals

Find the cheapest month or even day of the year to fly to Seattle / Tacoma International

Book the best Seattle / Tacoma International fare with no extra fees

Flight deals from London Heathrow to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from London Heathrow to Seattle / Tacoma International? Find the lowest prices on one-way and return tickets right here.
Seattle.$1,017 per passenger.Departing Tue, 12 Nov, returning Tue, 19 Nov.Return flight with Lufthansa and Austrian Airlines.Outbound indirect flight with Lufthansa, departs from London Heathrow on Tue, 12 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with Austrian Airlines, departs from Seattle / Tacoma International on Tue, 19 Nov, arriving in London Heathrow.Price includes taxes and charges.From $1,017, select.
Seattle.$1,017 per passenger.Departing Tue, 11 Feb, returning Tue, 18 Feb.Return flight with Lufthansa and Austrian Airlines.Outbound indirect flight with Lufthansa, departs from London Heathrow on Tue, 11 Feb, arriving in Seattle / Tacoma International.Inbound indirect flight with Austrian Airlines, departs from Seattle / Tacoma International on Tue, 18 Feb, arriving in London Heathrow.Price includes taxes and charges.From $1,017, select.
Seattle.$1,017 per passenger.Departing Tue, 26 Nov, returning Tue, 3 Dec.Return flight with Lufthansa and Austrian Airlines.Outbound indirect flight with Lufthansa, departs from London Heathrow on Tue, 26 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with Austrian Airlines, departs from Seattle / Tacoma International on Tue, 3 Dec, arriving in London Heathrow.Price includes taxes and charges.From $1,017, select.
Seattle.$1,028 per passenger.Departing Wed, 8 May, returning Mon, 13 May.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Wed, 8 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Mon, 13 May, arriving in London Heathrow.Price includes taxes and charges.From $1,028, select.

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Find the cheapest month to fly from London Heathrow to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Seattle / Tacoma International flights are currently cheapest in November.
Apr
Find prices
May
from $1,028
Jun
from $1,087
Jul
from $1,182
Aug
from $1,522
Sep
from $1,034
Oct
from $1,108
Nov
from $1,017
Dec
from $1,224
Jan
from $1,091
Feb
from $1,017
Mar
from $1,116

Direct flights from London Heathrow to Seattle / Tacoma International

London Heathrow to Seattle / Tacoma International: Alternative routes

Compare routes from London Heathrow to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

London to Seattle: Flight information

The things to know before you go.
Cheapest flight found$1,017
Cheapest month to flyFebruary
Average flight time10 hrs, 3 mins
Most popular airlineIberia
Average flights per week142

Finding cheap flights from London Heathrow to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from London Heathrow to Seattle / Tacoma International is $1,017. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
10 hours and 3 minutes is the average flight time from London Heathrow to Seattle / Tacoma International.
Iberia, KLM and Virgin Atlantic fly direct from London Heathrow to Seattle / Tacoma International.
As of April 2024, there are 142 flights per week flying from London Heathrow to Seattle / Tacoma International.
The cheapest month to fly from London Heathrow to Seattle / Tacoma International is usually February.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Seattle / Tacoma International Airport on Tuesday, 11 February 2025.
Yes – the average flight time is 10 hours and 3 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle / Tacoma International is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Lufthansa and British Airways offer the cheapest flight tickets to Seattle / Tacoma International.

How to find the best cheap flights from London Heathrow to Seattle / Tacoma International with Skyscanner Flight Search

Whether you’re looking for a one-way or return flight, compare deals on plane tickets from London Heathrow to Seattle / Tacoma International with all major carriers, and find the cheapest fares, using Skyscanner’s Flight Search.

  • Simply hit ‘search’ – our Flight Search tool compares prices from all major online travel agents and airlines that offer flights from London Heathrow to Seattle / Tacoma International to help you find the best and cheapest tickets – with no hidden fees or extra costs

  • Flex your dates – use Skyscanner’s ‘whole month’ tool to find the cheapest time to fly from London Heathrow to Seattle / Tacoma International within your selected dates

  • Find direct flights – tick ‘direct flights only’ to only see direct plane tickets from London Heathrow to Seattle / Tacoma International, if available

  • Search for nearby airports - broaden your search and potentially find even better deals for nearby airports in London Heathrow and Seattle / Tacoma International by selecting "add nearby airports" in the Flight Search tool

  • Book a multi-city trip – planning on visiting more than one location on your journey? Select ‘multi-city’ when searching for flights to find the best deals for stop-overs

  • Choose your flight class – compare prices for economy, business, and first class plane tickets from London Heathrow to Seattle / Tacoma Internationaland get the best deals however you choose to fly

  • Use airline points – check whether your chosen airline has a points system, such as Airpoints, to unlock flight ticket discounts and make savings on future trips from London Heathrow to Seattle / Tacoma International - and other destinations

Get Price Alerts to keep track of airfare changes

Score the best prices on cheap flights from London Heathrow to Seattle / Tacoma International with Skyscanner’s Price Alerts. Use Flight Search to find flights for your route, then click the “Get Price Alerts” button on the top left of the results page to get a notification to your phone or e-mail whenever ticket prices go up or down. For mobile users, click the bell on the top right. You can also create Price Alerts using the free Skyscanner app.

Plan your trip to Seattle / Tacoma International all in one place with hotels and car hire

Discover the best deals on hotels and car hire in Seattle / Tacoma International to keep all your bookings in one place and make your journey as smooth as possible. Simply use Skyscanner’s search tool to compare prices from top hotel and car providers across the country, from global to local brands.

Find hotels in Seattle / Tacoma International
Find car hire in Seattle / Tacoma International

Book flights from London Heathrow to Seattle / Tacoma International with peace of mind

Fly from London Heathrow to Seattle / Tacoma International with peace of mind using Skyscanner’s helpful tips and resources.

  • Find flexible tickets – use Flight Search to book flexible tickets from London Heathrow to Seattle / Tacoma International (with eligible airlines) to protect your money if your flights are changed or cancelled

  • Keep track of travel information– make sure you check the latest travel guidance before you fly to Seattle / Tacoma International - including visa requirements, health alerts, and more - to avoid unexpected delays

  • Check your travel insurance – make sure you have the right travel insurance before your trip from London Heathrow to Seattle / Tacoma International to cover you for any unexpected events, such as cancellations, delays, and lost luggage

  • Add travel cost protection - avoid travel pitfalls and choose Travel Cost Protection with Skyscanner when booking flights from London Heathrow to Seattle / Tacoma International. It's available at the checkout for eligible destinations

Make greener choices with sustainable flights from London Heathrow to Seattle / Tacoma International

Did you know that with Skyscanner Flight Search, you can filter flights from London Heathrow to Seattle / Tacoma International to only see routes with lower-than-average carbon emissions? Simply select "Only show flights with lower CO2 emissions" under "Greener choices" in the filter menu, or look for the "Greener Choices" label at the top of flights listings.


Read more about Skyscanner's commitment to sustainable travel

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Prices shown on this page are estimated lowest prices only. Found in the last 45 days.