$89 Cheap Delta flights Washington (IAD) to Pittsburgh (PIT)

Finding cheap one-way Delta Air Lines flights from IAD to PIT from $89 on Expedia is easy — just filter by “Price (lowest to highest).” Or check out our affordable round-trip fares from $177 for your next getaway.**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.

Delta Air Lines flights to Pittsburgh are typically cheaper in the quieter months of January and February. Whether you’re in search of a one-way or a return ticket, you could land a better deal then.

For cheap Delta Air Lines fares from Washington Dulles Intl. Airport (IAD) to Pittsburgh Intl. Airport (PIT), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the cost. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**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.

Enter your dates, click search and select “Nonstop” on Expedia to find any direct flights from IAD to PIT with Delta Air Lines or another airline.

To find the earliest departures from IAD to PIT with Delta Air Lines, sort your results by “Morning” and “Early Morning.” Booking an early flight generally means 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.

Pittsburgh Intl. Airport (PIT) is the main Pittsburgh gateway for Delta Air Lines flights from Washington Dulles Intl. Airport (IAD).

Taking off from IAD to PIT with Delta Air Lines means enjoying a host of benefits, including an excellent in-flight experience and a rewarding loyalty program. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to redeem on select future travel purchases. That’s on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the ticket type you purchased, a fee will generally apply if you change or cancel your booking more than 24 hours after confirmation. To secure plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes while searching for flights. For more information on canceling or modifying your reservation, head to “Trips,” select your flight and click on “Manage Booking.”