$93 Cheap Flights from Dayton (DAY) to Washington (IAD)

View $93 flight on Fri, May 30, 2025Opens in a new window

Popular airlines from Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)

Find available prices by choosing your travel dates.

Cheap Flights from Dayton to Washington (DAY-IAD)

Prices were available within the past 7 days and start at $93 for one-way flights and $185 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Jul 2 - Fri, Jul 4
DAY
Dayton
IAD
Washington
$185 Roundtrip, found 18 hours ago
$185
Roundtrip
found 18 hours ago
Select United flight, departing Wed, Jul 2 from Dayton to Washington, returning Fri, Jul 4, priced at $185 found 18 hours ago
United
Fri, May 30 - Sun, Jun 1
DAY
Dayton
IAD
Washington
$187 Roundtrip, found 4 hours ago
$187
Roundtrip
found 4 hours ago
Select United flight, departing Fri, May 30 from Dayton to Washington, returning Sun, Jun 1, priced at $187 found 4 hours ago
United
Sat, May 17 - Tue, May 20
DAY
Dayton
IAD
Washington
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select United flight, departing Sat, May 17 from Dayton to Washington, returning Tue, May 20, priced at $189 found 1 hour ago
United
Wed, Jul 2 - Thu, Jul 17
DAY
Dayton
IAD
Washington
$192 Roundtrip, found 6 days ago
$192
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jul 2 from Dayton to Washington, returning Thu, Jul 17, priced at $192 found 6 days ago
United
Thu, May 29 - Sun, Jun 1
DAY
Dayton
IAD
Washington
$194 Roundtrip, found 3 hours ago
$194
Roundtrip
found 3 hours ago
Select United flight, departing Thu, May 29 from Dayton to Washington, returning Sun, Jun 1, priced at $194 found 3 hours ago
United
Thu, Jul 31 - Sun, Aug 3
DAY
Dayton
IAD
Washington
$194 Roundtrip, found 2 hours ago
$194
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Jul 31 from Dayton to Washington, returning Sun, Aug 3, priced at $194 found 2 hours ago
United
Wed, Jul 2 - Fri, Jul 4
DAY
Dayton
IAD
Washington
$197 Roundtrip, found 18 hours ago
$197
Roundtrip
found 18 hours ago
Select United flight, departing Wed, Jul 2 from Dayton to Washington, returning Fri, Jul 4, priced at $197 found 18 hours ago
United
Sat, May 17 - Tue, May 20
DAY
Dayton
IAD
Washington
$199 Roundtrip, found 1 hour ago
$199
Roundtrip
found 1 hour ago
Select United flight, departing Sat, May 17 from Dayton to Washington, returning Tue, May 20, priced at $199 found 1 hour ago
Delta
Wed, May 28 - Thu, May 29
DAY
Dayton
IAD
Washington
$205 Roundtrip, found 1 day ago
$205
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, May 28 from Dayton to Washington, returning Thu, May 29, priced at $205 found 1 day ago
American Airlines
Sat, Sep 6 - Sun, Sep 7
DAY
Dayton
IAD
Washington
$260 Roundtrip, found 1 day ago
$260
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep 6 from Dayton to Washington, returning Sun, Sep 7, priced at $260 found 1 day ago
Flights from Dayton (DAY) to Washington (IAD)
Origin airport
James M. Cox Dayton Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$185
Distance
367 mi

Dayton to Washington Flights

The cheapest times to fly from Dayton to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Dayton to Washington are during the month of July. You can find some of the cheapest flights from Dayton to Washington with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Dayton to Washington

Sunday is one of the best days to book for cheap flights from Dayton to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Dayton to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Dayton to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $93 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Dayton to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Dayton to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD) cost?
Cheap return fares from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD) start from $189. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving DAY on May 16 2025 and touching down at IAD. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from DAY to IAD?
The cheapest flights from DAY to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
Catch a direct flight with United Airlines and travel straight from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD).
What is the cheapest airline that flies from DAY to IAD?
Currently, the cheapest carrier operating one-way flights from DAY to IAD is United. You can book a seat on this route from $116. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from DAY on June 7 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
On average, James M. Cox Dayton Intl. Airport (DAY) only has 1 direct flight to Washington Dulles Intl. Airport (IAD) every day. To explore more options, try Expedia’s easy-to-use filter tool. Simply enter your travel dates, then click on “1 Stop” or “2+ Stops” to find flights with layovers.
What are the most popular departure times for flights from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
The 2 PM departures from DAY to IAD are the top choice for many travelers. These flights can come with a higher price due to their popularity. If you want to save money, choose a less crowded time to fly.
What day of the week has the most flights from DAY to IAD?
Depart on a Monday if you’re searching for the biggest selection of flights from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
Catch the earliest flight at around 9:45AM UTC-5, leaving from James M. Cox Dayton Intl. Airport (DAY). You’ll be flying for around 1h 37m, reaching Washington Dulles Intl. Airport (IAD) at approximately 11:22AM UTC-5.
How long does it take to fly from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
Flights from DAY to IAD have an average travel time of 1 hour and 35 minutes. The distance between these two airports is 370 mi.
What is the best time to fly from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
To land at Washington Dulles Intl. Airport (IAD) on schedule, pick a flight that leaves from James M. Cox Dayton Intl. Airport (DAY) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Washington from James M. Cox Dayton Intl. Airport (DAY)?
You can land at Ronald Reagan Washington National Airport (DCA) or Washington Dulles Intl. Airport (IAD) when you travel to Washington on a direct flight from James M. Cox Dayton Intl. Airport (DAY).
Is it cheaper to buy a plane ticket from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD) last-minute?
Waiting until right before your break to book a ticket from DAY to IAD often results in higher prices. While it’s possible to find some last-minute deals, they’re not always guaranteed. Be flexible with your travel plans for the best chance of scoring a bargain.
Is it cheaper to book a DAY to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking a DAY to IAD flight and hotel package with Expedia could result in significant savings. What’s more, managing everything in one place takes the hassle out of travel planning. Just secure your flights and select from our extensive range of stays, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
If you booked your DAY to IAD flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you’d like more information.

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*Available to One Key members.