$78 Cheap Porter Airlines flights Washington (IAD) to Toronto (YTZ)

Apply the "Price (lowest to highest)" filter on Expedia to look for cheap Porter Airlines round-trip flights from $189 from IAD to YTZ. Affordable one-way fares from $78 are available as well.**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.

To get cheap flights from IAD to YTZ with Porter Airlines, begin your search about one month before your intended departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Want another tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**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.

The earliest flight from IAD to YTZ with Porter Airlines leaves at 2:00PM UTC-5. You'll touch down at 3:30PM UTC-5. The last Porter Airlines flight of the day leaves at 2:10PM UTC-5 and arrives at 3:40PM UTC-5. With 20% fewer cancellations for morning and mid-morning flights, beginning your travel day early is typically the smartest choice.**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.

With an excellent in-flight experience, Porter Airlines is a top pick for many passengers flying from IAD to YTZ. Plus, as a VIPorter and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.