Cheap flights from Seattle to London, ON from C$ 558
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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Seattle to London
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to London (YXU). 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 30 December 2024.
Find flight deals from Seattle to London
Best flights from Seattle to LondonDiscover carefully curated flight deals from Seattle to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 December 2024.
Discover carefully curated flight deals from Seattle to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 December 2024.
Find flights from Seattle to London within your budget
Customize your flight search to find flights from Seattle to London 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 629,999 searches. Data last updated 30 December 2024.
Fly from
Fly to
Route
Depart
Return
Price
SeattleLondon
SEA - YXU
SEAYXU
Seattle/Tacoma Intl
Mon 10/2
11:30 a.m.-7:13 p.m.
2 stops28h 43m
London
Mon 17/2
8:00 p.m.-2:21 p.m.
1 stop21h 21m
SeattleLondon
SEA - YXU
SEAYXU
Seattle/Tacoma Intl
Mon 10/2
5:45 a.m.-7:13 p.m.
3 stops34h 28m
London
Mon 17/2
8:00 p.m.-10:00 a.m.
2 stops17h 00m
SeattleLondon
SEA - YXU
SEAYXU
Seattle/Tacoma Intl
Thu 13/2
3:05 p.m.-9:15 a.m.
2 stops15h 10m
London
Thu 20/2
5:45 a.m.-2:30 p.m.
2 stops11h 45m
SeattleLondon
SEA - YXU
SEAYXU
Seattle/Tacoma Intl
Tue 11/2
11:17 p.m.-2:50 p.m.
2 stops12h 33m
London
Tue 18/2
3:25 p.m.-9:30 p.m.
1 stop9h 05m
Best time to book a flight from Seattle to London
Have a flexible travel schedule? Discover the best time to fly to London from Seattle with our price prediction graph.
Travel insights for flights from Seattle to London
Get recent, data-driven insights about flights from Seattle to London including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Seattle to London, Ontario?
Currently, October is the cheapest month in which you can book a flight from Seattle to London, Ontario (average of C$ 243). Flying from Seattle to London, Ontario in March is currently the most expensive (average of C$ 538). 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.
Rainfall in London by month
Plan your trip to London by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London, Ontario ranges from 70.0 - 100.0 mm per month. January is typically the wettest month, when rainfall can reach 100.0 mm. March is typically the driest time to visit London, Ontario when rainfall is around 70.0 mm.
Temperature in London by month
Plan your trip to London by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of February, when temperatures are typically at their lowest (around -6.0 C).
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. 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 London. Reviews last updated 30 December 2024.
Crew
Overall
Comfort
Entertainment
Boarding
Food
Reviews
United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Crew
Overall
Comfort
Entertainment
Boarding
Food
Reviews
United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Crew
Overall
Comfort
Entertainment
Boarding
Food
Reviews
United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Crew
Overall
Comfort
Entertainment
Boarding
Food
Reviews
United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
Related info for your journey
Find useful and relevant information for your journey from Seattle to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Seattle to London
See prices for flight routes from nearby airports that may be better suited for you.
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 Seattle to London?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from Seattle today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Seattle to London?
Cheapflights simply makes it quick and affordable to book flights from Seattle to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Seattle to London with no change fees?
Need flexible booking options for your flight to London from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Seattle to London become cheaper?
Not ready to book yet? You can track prices for flights from Seattle to London on Cheapflights with our Price Alert feature and get notified when better prices are available.