$90 Cheap Flights from Dayton (DAY) to Washington (IAD)

View $90 flight on Mon, Nov 24, 2025Opens in a new window

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

Cheap Flights from Dayton to Washington (DAY-IAD)

Prices were available within the past 7 days and start at $90 for one-way flights and $179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Feb 20 - Sat, Feb 21
DAY
Dayton
IAD
Washington
$179 Roundtrip, found 1 day ago
$179
Roundtrip
found 1 day ago
Select United flight, departing Fri, Feb 20 from Dayton to Washington, returning Sat, Feb 21, priced at $179 found 1 day ago
United
Mon, Nov 24 - Fri, Nov 28
DAY
Dayton
IAD
Washington
$184 Roundtrip, found 3 hours ago
$184
Roundtrip
found 3 hours ago
Select United flight, departing Mon, Nov 24 from Dayton to Washington, returning Fri, Nov 28, priced at $184 found 3 hours ago
United
Thu, Oct 9 - Sat, Oct 11
DAY
Dayton
IAD
Washington
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Oct 9 from Dayton to Washington, returning Sat, Oct 11, priced at $189 found 1 hour ago
United
Fri, Oct 10 - Sun, Oct 12
DAY
Dayton
IAD
Washington
$194 Roundtrip, found 1 hour ago
$194
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Oct 10 from Dayton to Washington, returning Sun, Oct 12, priced at $194 found 1 hour ago
Delta
Tue, Oct 7 - Tue, Oct 14
DAY
Dayton
IAD
Washington
$209 Roundtrip, found 1 hour ago
$209
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Oct 7 from Dayton to Washington, returning Tue, Oct 14, priced at $209 found 1 hour ago
United
Fri, Oct 24 - Sun, Oct 26
DAY
Dayton
IAD
Washington
$210 Roundtrip, found 5 days ago
$210
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 24 from Dayton to Washington, returning Sun, Oct 26, priced at $210 found 5 days ago
United
Thu, Oct 9 - Sat, Oct 11
DAY
Dayton
IAD
Washington
$212 Roundtrip, found 1 hour ago
$212
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Oct 9 from Dayton to Washington, returning Sat, Oct 11, priced at $212 found 1 hour ago
United
Fri, Nov 21 - Thu, Nov 27
DAY
Dayton
IAD
Washington
$212 Roundtrip, found 12 hours ago
$212
Roundtrip
found 12 hours ago
Select United flight, departing Fri, Nov 21 from Dayton to Washington, returning Thu, Nov 27, priced at $212 found 12 hours ago
United
Sat, Feb 21 - Sun, Feb 22
DAY
Dayton
IAD
Washington
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from Dayton to Washington, returning Sun, Feb 22, priced at $213 found 2 days ago
American Airlines
Wed, Oct 22 - Sat, Oct 25
DAY
Dayton
IAD
Washington
$251 Roundtrip, found 13 hours ago
$251
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Wed, Oct 22 from Dayton to Washington, returning Sat, Oct 25, priced at $251 found 13 hours ago

Find the cheapest month to fly from Dayton (DAY) to Washington (IAD)

November is typically the cheapest month to fly

From $179 - $515 per traveler.

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $199
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $199
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
$179
Distance
367 mi
Average flight time
1 hour 37 mins

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 February. 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 $90 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?
Lock in a cheap one-way flight from $90 or cheap return flight from $179 from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from DAY to IAD is February, when there's less demand. Off-peak months are usually when you'll find cheap fares for travel between these airports.
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 James M. Cox Dayton Intl. Airport (DAY) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest DAY to IAD flight.
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.