$759 Cheap Aer Lingus flights Düsseldorf (DUS) to Washington (IAD)

Use the "Price (lowest to highest)" filter on Expedia to look for cheap Aer Lingus round-trip flights from $535 from DUS to IAD. Affordable one-way options from $759 are also available.**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.

Getting the best Aer Lingus deals from DUS to IAD often comes down to booking at the right moment. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better yet, you can pocket 17% on average by buying your fare on a Sunday rather than 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 browse the earliest flights from DUS to IAD. Leaving early means flight cancellations are less likely.**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.

Aer Lingus makes traveling from DUS to IAD more enjoyable with a rewarding loyalty program and a 4-star airline rating. You could even start earning points with Aer Lingus AerClub. Be sure to sign up to our 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.