$215 Cheap Flights from Toronto (YYZ) to Seattle (SEA)

Toronto (YYZ) to Seattle (SEA) at a glance

Travel from Toronto (YYZ) to Seattle (SEA) with a selection of airlines offering various options on this international short-haul route. Whether you prefer full-service or budget-friendly carriers, you can compare Seattle flights to find the itinerary that aligns with your budget and schedule. Explore the renowned sights and neighborhoods of Seattle while discovering key details for flights from Toronto's Pearson International Airport to Seattle-Tacoma International Airport.

• Fastest flight duration: around 5h 30m non-stop
• Route distance: roughly 2,100 miles (3,380 km)
• Flights per week: around 15+ flights with multiple daily departures on average
• Typical fares (one-way): economy tickets often range from $125–$500, depending on seasonality and how far ahead you book

Flights from Pearson International Airport (YYZ) to Seattle - Tacoma International Airport (SEA)

According to recent traveler bookings, here are the top airlines favored by passengers flying from Toronto to Seattle, particularly for non-stop and one-stop flights. Many travelers opt for popular layover spots such as Calgary International Airport (YYC) with around a 2-hour and 15-minute layover, Vancouver International Airport (YVR) also at approximately 2 hours and 15 minutes, and Detroit Metropolitan Wayne County Airport (DTW) with about a 3-hour and 15-minute layover. This variety allows you to mix and match options based on price, total travel time, and cabin class for your ideal travel experience.

• Alaska Airlines: This full-service airline provides non-stop flights, with one-way prices generally ranging from $125 to $580. It represents about 33% of departures for this route, and the total travel time is approximately 5 hours and 30 minutes.
• Air Canada: Another full-service option, Air Canada offers both non-stop and one-stop flights, with one-way fares typically between $125 and $525. It accounts for around 28% of departures, with non-stop travel taking about 5 hours and 30 minutes.
• United: As a full-service carrier, United provides both non-stop and one-stop services, with one-way tickets usually priced from $140 to $525. This airline covers roughly 15% of departures, with non-stop flight times at about 5 hours and 30 minutes.
• Delta: Delta, a full-service airline, primarily offers one-stop flights, with one-way fares ranging from $160 to $495. It constitutes roughly 12% of departures on this route, with an in-flight duration of 6 hours and 30 minutes and a total journey time of around 8 hours and 45 minutes, including layovers.
• WestJet: This low-cost airline specializes in one-stop services, with one-way fares typically between $135 and $505. WestJet makes up about 9% of departures, featuring an in-flight time of 6 hours and 30 minutes and a total travel duration of roughly 8 hours and 45 minutes, including layovers.

Travelers flying from Toronto to Seattle can enhance their experience by upgrading their flight. Alaska Airlines provides first class and business class options, while Delta features first class and premium economy. Air Canada offers its business class service for a comfortable journey.

Best time to fly from Toronto (YYZ) to Seattle (SEA)

The most popular months for travelers flying from Toronto to Seattle are April, July, and August, when peak temperatures in Seattle reach up to 67.5°F in August. If you prefer quieter travel, consider May, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 55.8°F. For better deals, March usually offers the lowest average one-way fare around $241. Flight availability peaks in August, with approximately 33 flights per week, making it easier to find convenient departure times. February and March have the fewest flights, with approximately 13 flights per week.

• Cheapest time to fly: March usually offers good deals with average one-way fare around $241, roughly 15% cheaper than the yearly average.
• More budget-friendly months to fly: February and April typically offer average one-way fares of around $257.
• Most flight options: August has the highest number of flights from Toronto to Seattle, with approximately 33 flights per week, giving you more flexibility in scheduling your trip.

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Toronto (YYZ) to Seattle (SEA)

• Toronto to Seattle (YYZ-BFI): Boeing Field Airport (BFI) lies approximately 6 miles from Seattle - Tacoma International Airport (SEA), providing a convenient option for travelers heading to Seattle.
• Toronto to Seattle (YTZ-SEA): Billy Bishop Toronto City Airport (YTZ) is situated roughly 11 miles from Pearson International Airport (YYZ), making it a viable choice for those flying to Seattle.
• Hamilton to Seattle (YHM-SEA): John C. Munro Hamilton International Airport (YHM) is located about 39 miles from Pearson International Airport (YYZ), serving as another alternative for flights to Seattle.

How to find the best prices for flights from Toronto (YYZ) to Seattle (SEA)

Getting some of the best deals on flights from Toronto to Seattle is all about timing and flexibility. Here are some key tips to help you save:

1. Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, coinciding with when most travelers make their reservations. Evening departures (6 PM-12 AM) often offer lower prices, although afternoon flights (12 PM-6 PM) are more popular. Additionally, flying on Wednesday typically provides cheaper rates, while Sunday remains the busiest travel day.
2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Seattle - Tacoma International Airport from Pearson International Airport

Seattle welcomes travelers from Toronto with a range of transport options based on price, convenience, and proximity. For departures, Pearson International Airport is roughly a 25-minute drive (covering about 19 miles) from central Toronto. Seattle city center is approximately a 20-minute drive (covering about 14 miles) from Seattle - Tacoma International Airport, depending on traffic. Here's how to reach Seattle efficiently:

• Hotel transfer: Transfers offer a convenient way to reach your hotel in Seattle, with private rides that can be arranged in advance.
• Car rental: Renting a car from Seattle - Tacoma International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Seattle - Tacoma International Airport on Expedia.
• Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
• Public transportation: From Seattle - Tacoma International Airport, SeaTac/Airport Station, a metro station, is located about 0.3 miles away on foot, while Tukwila Station, a train station, sits approximately 4.3 miles away by car, providing convenient transport options for travelers.

Toronto to Seattle Flights

The cheapest times to fly from Toronto 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 Toronto to Seattle are during the month of January. You can find some of the cheapest flights from Toronto to Seattle with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Toronto to Seattle

Sunday is one of the best days to book for cheap flights from Toronto 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 Toronto 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 Toronto to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $215 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 Toronto 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 Toronto 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.