$474 Cheap Air Canada flights Singapore (SIN) to Washington (IAD)

Scoring cheap one-way Air Canada flights from SIN to IAD from $474 on Expedia couldn't be easier --- just filter by "Price (lowest to highest)." Or check out our affordable return fares from $727 for your next 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.

To grab cheap flights from SIN to IAD with Air Canada, begin searching about one month before your planned departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Want another tip? Booking on Sunday can lead to 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.

Search Air Canada's earliest flights from SIN to IAD by selecting the "Morning" and "Early Morning" filters. Not only will you get to where you're going sooner, early departures also experience 20% fewer 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.

Air Canada makes flying from SIN to IAD enjoyable with top-tier customer service and an excellent in-flight experience. You also have the chance to earn points with Air Canada Aeroplan. Be sure to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.