Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London, Ontario to Seattle
Cheap round-trip flights
Cheap one-way flights
United Airlines flights from London, Ontario to Seattle
Our best United Airlines deals on London, Ontario to Seattle flight tickets
WestJet flights from London, Ontario to Seattle
Our best WestJet deals on London, Ontario to Seattle flight tickets
See travel insights to Seattle from
How to get the cheapest flight ticket from London, Ontario to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from London, Ontario is on a Saturday. momondo users have found tickets for Saturday departures for as low as $316. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from London, Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $449.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from London, Ontario in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $330 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $477. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest airline that flies from London to Seattle/Tacoma Intl?
Air Canada, United Airlines, and WestJet are the most popular carriers operating from London to Seattle/Tacoma Intl
What airlines fly to Seattle?
Air Canada, Alaska Airlines and WestJet are the top three most popular airlines that fly to Seattle from London, Ontario according to our data. Air Canada is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
When to book flights from London, Ontario to Seattle
Cheap London, Ontario to Seattle (YXU to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London, Ontario to Seattle
How far is London to Seattle/Tacoma Intl by plane?
Seattle/Tacoma Intl is 1997.9 mi away from London. Flights usually cover this in 7h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Airport to Seattle/Tacoma Intl Airport?
Prices for flights from London Airport to Seattle/Tacoma Intl Airport are updated daily.
How old do you have to be to fly from London Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Seattle?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from London.
Can I find flights from London to Seattle with flexible booking policies on momondo?
momondo does allow users to show only those flights to Seattle from London which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from London to Seattle?
momondo provides multiple filters to help you find the best flight to Seattle from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from London to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from London and alert you when they change.