$69 Cheap Delta flights Washington (IAD) to Detroit (DTW)

Landing cheap one-way Delta Air Lines flights from IAD to DTW from $69 on Expedia is a breeze --- just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares from $137 for your next exciting vacation.**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.

Begin your search one to three months ahead of your travel date to score cheaper fares on Delta Air Lines flights from Washington Dulles Intl. Airport (IAD) to Detroit Metropolitan Wayne County Airport (DTW). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic trips.*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 first Delta Air Lines flight from IAD to DTW departs at 6:00AM UTC-5, arriving at 7:44AM UTC-5. If you'd like to head off later, the last Delta Air Lines flight leaves IAD at 5:16PM UTC-5 and touches down at DTW at 7:06PM UTC-5. Flying before midday is generally a good idea as morning flights are least 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.

With a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a popular option for many passengers heading from IAD to DTW. What's more, if you're a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.