$276 Cheap Flights from Lethbridge (YQL) to Seattle (SEA)

View $276 flight on Thu, Sep 18, 2025Opens in a new window

Popular airlines from Lethbridge, AB (YQL-Lethbridge County) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Lethbridge to Seattle (YQL-SEA)

Prices were available within the past 7 days and start at $276 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Lethbridge (YQL) to Seattle (SEA)
Origin airport
Lethbridge County
Destination airport
Seattle - Tacoma Intl.
Distance
460 mi

Lethbridge to Seattle Flights

The cheapest times to fly from Lethbridge to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Lethbridge to Seattle are during the month of . You can find some of the cheapest flights from Lethbridge to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Lethbridge to Seattle

Sunday is one of the best days to book for cheap flights from Lethbridge to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Lethbridge to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Lethbridge to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $276 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Lethbridge to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Lethbridge to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA) cost?
Snag a cheap one-way flight from $276 or cheap return flight from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from YQL to SEA is , when there's less demand. Off-peak season is usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest YQL to SEA flight.
How many flights per day from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA)?
Direct flights from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from YQL to SEA?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a range of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA)?
To touch down at Seattle - Tacoma Intl. Airport (SEA) on time, pick a flight that takes off from Lethbridge County Airport (YQL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute bookings from YQL to SEA are generally more expensive. To secure the lowest prices, start searching for flights ahead of time. That said, if you're flexible with your travel plans, you may find a cheap fare right before your trip.
Is it cheaper to book a YQL to SEA flight and hotel package?
You'll generally save money by booking a YQL to SEA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've chosen your ideal flights and accommodations, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Lethbridge County Airport (YQL) to Seattle - Tacoma Intl. Airport (SEA)?
It's generally possible to cancel or reschedule your YQL to SEA flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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