Cheap flights from London Heathrow Airport to Seattle from C$ 764
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
The best prices from London Heathrow to Seattle/Tacoma Intl are usually found in November or February, booked 48 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday
Cheap flight deals from Heathrow to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 May 2024.
Popular in | July |
|---|---|
Cheapest in | November |
Average price | C$ 978 |
Round-trip from | C$ 413 |
What is the cheapest day to fly round-trip from London Heathrow Airport to Seattle?
Flights from London Heathrow Airport to Seattle are generally found to be more expensive on Sunday. This shouldn't discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle.
How far in advance should I book a flight from London Heathrow Airport to Seattle?
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 44 days in advance, which can save you up to 35% on flights from London Heathrow Airport to Seattle compared to booking the week you need them. Waiting 44 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 918. For sooner than that we have options available in the next 3 days from C$ 1,260.
What is the cheapest month to fly from London Heathrow Airport to Seattle?
The best pricing can be found in the month of November. Prices to Seattle from London Heathrow Airport average C$ 946. You can even find prices in November for less than C$ 946, as users have found deals to Seattle from as low as C$ 520. The month of July appears to be one of the more expensive times to travel to Seattle from London Heathrow Airport. Flying in the targeted month can save you up to 30%.
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 fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 23% versus a flight at noon.
Cheap Icelandair flights from Heathrow to Seattle
Explore cheap flight options specifically provided by Icelandair for the route between Heathrow and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 407,867 searches. Data last updated 18 May 2024.
Peruse some of the lowest-priced Icelandair flights we've found from London to Seattle. Make sure to check back often as deals are often changing.
Cheap British Airways flights from Heathrow to Seattle
Explore cheap flight options specifically provided by British Airways for the route between Heathrow and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 407,867 searches. Data last updated 18 May 2024.
Browse through some of the cheapest British Airways flights travelling from London to Seattle. Check back soon if you're not seeing flights that suit your needs.
Cheap Heathrow to Seattle flights in May & June 2024
Find cheap flight options from Heathrow to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 407,867 searches. Prices were last updated on 18 May 2024.
Listed are some of the best fares we've found on flights departing from London to Seattle in 2024. Check back regularly for other flight deals.
Heathrow to Seattle 2024 flight deals
Discover exclusive flight deals for travel between Heathrow and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 407,867 searches. Data last updated 18 May 2024.
Listed are some of the best fares we've found on flights departing from London to Seattle in 2024. Check back regularly for other flight deals.
Direct flights to Seattle from Heathrow
Discover non-stop flight options from Heathrow to Seattle. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 407,867 searches. Data last updated 18 May 2024.
For a shorter flight, select one of these non-stop flights from London to Seattle. Select from other flights from London to Seattle by using the search form above.
Heathrow to Seattle flights leaving soon
Find last-minute flight options from Heathrow to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 407,867 searches. Data last updated 18 May 2024.
Have a look at some of the last-minute flights available departing from London to Seattle. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
One-way flights to Seattle from Heathrow
Search for one-way flight options from Heathrow to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 407,867 searches. Data last updated 18 May 2024.
Users in need of a one-way flight from London to Seattle can choose from these deals. For those needing a return trip from London, there is a search form available above.
Find flights from Heathrow to Seattle within your budget
Customize your flight search to find flights from Heathrow to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 407,867 searches. Data last updated 18 May 2024.
Fly from
Fly to
Budget
C$ 793 - C$ 1,032
Route
Depart
Return
Price
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Mon 2/9
1 stop15h 30m
Seattle/Tacoma Intl
Sun 15/9
1 stop17h 25m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 1/10
Nonstop9h 45m
Seattle/Tacoma Intl
Tue 5/11
1 stop13h 53m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Mon 4/11
Nonstop10h 25m
Seattle/Tacoma Intl
Mon 11/11
Nonstop9h 35m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Sat 2/11
Nonstop10h 00m
Seattle/Tacoma Intl
Tue 12/11
Nonstop9h 25m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 1/10
Nonstop10h 25m
Seattle/Tacoma Intl
Mon 4/11
1 stop22h 30m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Mon 9/9
2 stops16h 00m
Seattle/Tacoma Intl
Thu 24/10
1 stop14h 00m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 18/6
Nonstop10h 20m
Seattle/Tacoma Intl
Sun 23/3
Nonstop9h 25m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Sat 21/9
2 stops16h 00m
Seattle/Tacoma Intl
Sat 5/10
1 stop14h 40m
London HeathrowSeattle/Tacoma Intl
LHR - SEA
LHRSEA
London Heathrow
Tue 18/6
2 stops20h 40m
Seattle/Tacoma Intl
Sun 23/3
2 stops38h 55m
When is the best time to book a flight from London Heathrow Airport to Seattle?
Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Seattle. Price data was last updated on 10 May 2024.
The price you pay for your flight from London Heathrow Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
When is the cheapest time to fly from London Heathrow Airport to Seattle?
Use this chart to determine the cheapest time to fly round-trip from Heathrow to Seattle. Price data was last updated on 12 May 2024.
Average price of flights to Seattle by month
Plan your trip from Heathrow to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Heathrow to Seattle is currently C$ 1,157 while a round-trip flight costs C$ 916. Price data was last updated on 12 May 2024.
Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Seattle (average of C$ 303). Flying from London Heathrow Airport to Seattle in March is currently the most expensive (average of C$ 420). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
January
C$ 444
February
C$ 459
March
C$ 572
April
C$ 561
May
C$ 433
June
C$ 488
July
C$ 560
August
C$ 571
September
C$ 552
October
C$ 413
November
C$ 430
December
C$ 482
Temperature and rainfall in Seattle by month
Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.
SEA Temperature | 5 - 19 °C |
|---|
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 18 May 2024.
See what other customers who have flown with Icelandair, British Airways and KLM from London to Seattle have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your tripComplete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Heathrow to Seattle by cabin class
Find flights from Heathrow to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from Heathrow to Seattle
Find hourly flight availability from Heathrow to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 May 2024.
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 43%of flight departures | Morning6 am to noon |
| 56%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |
Weekly flight availability from Heathrow to Seattle
Explore weekly flight availability from Heathrow to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 May 2024.
| Sunday | 20daily flights |
|---|---|
| Monday | 20daily flights |
| Tuesday | 24daily flights |
| Wednesday | 20daily flights |
| Thursday | 20daily flights |
| Friday | 20daily flights |
| Saturday | 25daily flights |
Book a flight to one of these trending destinations
User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to Seattle?
Deals for Heathrow to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Seattle?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Seattle for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Heathrow to Seattle with no change fees?
Yes, we can. To see specific flights from Heathrow to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Heathrow to Seattle become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Heathrow today and book when prices fit your budget.