$260 Cheap WestJet flights Toronto (YYZ) to Washington (IAD)

Finding cheap one-way WestJet flights from YYZ to IAD from $260 on Expedia is easy — just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Snagging the best WestJet deals from YYZ to IAD often comes down to timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. To top it off, you can pocket 17% on average by buying your tickets on a Sunday compared to a Friday, which is usually the most expensive day to book.* It's a good idea to start searching for flights about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Sort your results by "Morning" and "Early Morning" to find the earliest departures from YYZ to IAD. Leaving early means you're 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Jetting off from YYZ to IAD with WestJet comes with plenty of perks, including a rewarding loyalty program and top-tier customer service. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to redeem on select future travel purchases. That's in addition to the WestJet Rewards points you can earn with WestJet.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.