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Dulles Intl

$139+ Cheap flights from Dayton (DAY) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — IAD
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Dayton to Dulles Intl

Cheapest flights from Dayton to Dulles Intl
Explore the most affordable flight options available from Dayton to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:33 pm
DAY
-
IAD
Nonstop1h 37m
United Airlines
Mon 4/278:22 am
IAD
-
DAY
Nonstop1h 38m
United Airlines
Deal found 1/21$189
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:44 pm
DAY
-
IAD
1 stop5h 37m
Delta
Sat 3/147:18 am
IAD
-
DAY
1 stop5h 47m
Delta
Deal found 1/20$209
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:45 am
DAY
-
IAD
Nonstop1h 38m
United Airlines
Tue 2/175:50 pm
IAD
-
DAY
Nonstop1h 48m
United Airlines
Deal found 1/21$221
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/136:44 pm
DAY
-
IAD
1 stop5h 37m
Delta
Tue 2/176:00 am
IAD
-
DAY
1 stop4h 55m
Delta
Deal found 1/21$224
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:45 am
DAY
-
IAD
Nonstop1h 38m
United Airlines
Fri 2/205:50 pm
IAD
-
DAY
Nonstop1h 48m
United Airlines
Deal found 1/21$229
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/69:45 am
DAY
-
IAD
Nonstop1h 38m
United Airlines
Mon 3/912:35 pm
IAD
-
DAY
Nonstop1h 47m
United Airlines
Deal found 1/20$234
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:20 am
DAY
-
IAD
Nonstop1h 32m
United Airlines
Wed 9/1612:35 pm
IAD
-
DAY
Nonstop1h 26m
United Airlines
Deal found 1/20$238
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:57 pm
DAY
-
IAD
Nonstop1h 33m
United Airlines
Sun 3/812:35 pm
IAD
-
DAY
Nonstop1h 47m
United Airlines
Deal found 1/20$247
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:45 pm
DAY
-
IAD
Nonstop1h 34m
United Airlines
Wed 9/28:15 am
IAD
-
DAY
Nonstop1h 32m
United Airlines
Deal found 1/20$249
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/129:45 am
DAY
-
IAD
Nonstop1h 38m
United Airlines
Mon 2/1612:34 pm
IAD
-
DAY
Nonstop1h 48m
United Airlines
Deal found 1/21$252
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:44 pm
DAY
-
IAD
1 stop5h 37m
Delta
Sat 2/216:00 am
IAD
-
DAY
1 stop4h 55m
Delta
Deal found 1/19$254
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:45 am
DAY
-
IAD
Nonstop1h 38m
United Airlines
Sun 2/155:50 pm
IAD
-
DAY
Nonstop1h 48m
United Airlines
Deal found 1/20$257

Find flight deals from Dayton to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dayton (DAY) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$189
(United Airlines)

One-way from

$139
(United Airlines)

Popular in

April

Cheapest in

January

Average price

$234

Good round-trip deal

$310 or less

Good one-way deal

$259 or less
Provider with most accurate pricing for Dayton-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dayton-Washington, D.C. Dulles Intl flights.
Search Deals
From Dayton to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Dayton to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Dayton to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Dayton to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dayton to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
Use the filters below to find and compare flights from Dayton to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Dayton

Fly to

Dulles Intl

Route

Depart

Return

Price

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Thu 6/18

7:45 pm-9:19 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

Sun 6/21

8:15 am-9:47 am

Nonstop1h 32m

$189

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Wed 4/15

7:33 pm-9:10 pm

Nonstop1h 37m

Washington, D.C. Dulles Intl

Sun 4/26

8:22 am-10:00 am

Nonstop1h 38m

$189

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Sat 3/7

6:00 am-11:35 am

1 stop5h 35m

Washington, D.C. Dulles Intl

Sat 3/14

7:18 am-1:05 pm

1 stop5h 47m

$209

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Fri 4/17

6:44 pm-12:28 am

1 stop5h 44m

Washington, D.C. Dulles Intl

Sun 4/19

6:00 am-10:45 am

1 stop4h 45m

$209

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Sat 4/18

11:31 am-5:23 pm

1 stop5h 52m

Washington, D.C. Dulles Intl

Wed 4/22

7:05 am-2:01 pm

1 stop6h 56m

$209

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Thu 3/5

6:00 am-11:35 am

1 stop5h 35m

Washington, D.C. Dulles Intl

Tue 3/10

3:35 pm-10:48 pm

1 stop7h 13m

$209

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Fri 4/17

7:33 pm-9:10 pm

Nonstop1h 37m

Washington, D.C. Dulles Intl

Mon 4/20

8:22 am-10:00 am

Nonstop1h 38m

$249

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Thu 2/12

9:45 am-11:23 am

Nonstop1h 38m

Washington, D.C. Dulles Intl

Mon 2/16

12:34 pm-2:22 pm

Nonstop1h 48m

$252

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Fri 2/20

6:44 pm-12:21 am

1 stop5h 37m

Washington, D.C. Dulles Intl

Sat 2/21

6:00 am-10:55 am

1 stop4h 55m

$254

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Wed 4/15

6:44 pm-12:28 am

1 stop5h 44m

Washington, D.C. Dulles Intl

Sun 4/26

6:00 am-10:45 am

1 stop4h 45m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 20 results
1
2

Compare providers for flights from Dayton to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dayton to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Dayton-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Dayton-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Dayton-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dayton-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Dayton-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dayton to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Dayton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Dayton to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Dayton to Washington, D.C. Dulles Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Dayton to Washington, D.C. Dulles Intl Airport (average of $77). Flying from Dayton to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $193). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DAY to IAD?

Find hourly flight availability from Dayton to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2026.

When flying from Dayton to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Dayton to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated January 21, 2026.
See what other customers who have flown with United Airlines from Dayton to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,191 reviews

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,191 reviews
United Airlines
7.4
Good
9,191 reviews

Boarding

7.7

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Dayton to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Dayton to Washington, D.C. Dulles Intl?

    Most people fly from Dayton (DAY) if they book a flight from Dayton to Washington, D.C. Dulles Intl. On average, Dayton has 7 outbound flights to Washington, D.C. Dulles Intl per day from 1 airline. Dayton is conveniently located just 10.0 mi from Dayton’s city center.

  • How long is the flight from Dayton to Washington, D.C. Dulles Intl Airport?

    Departing from Dayton to Washington, D.C. Dulles Intl Airport will take you 1h 34m. Dayton and Washington, D.C. Dulles Intl Airport are separated by a distance of 367 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Dayton to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, United Airlines ($189), offers the cheapest pricing from Dayton to Washington, D.C. Dulles Intl Airport. United Airlines is 40% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Dayton to Washington, D.C. Dulles Intl Airport?

    Consider GoJet (80%), United Airlines (76%) or CommutAir (73%) when booking your flight. These represent the most reliable airlines when flying from Dayton to Washington, D.C. Dulles Intl Airport.

  • What are the cheapest flights from Dayton to Washington, D.C. Dulles Intl Airport?

    While on average a flight from Dayton to Washington, D.C. Dulles Intl Airport is generally $1,915, our data shows the cheapest flight currently is $124. When looking at the most popular route, (Dayton - Washington, D.C. Dulles Intl), you can expect to pay $189 for that flight.

  • Can I find deals for flights from Dayton to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Dayton to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dayton to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dayton to Dulles Intl.

  • Can I find deals for business class flights from Dayton to Dulles Intl?

    Yes. Cheapflights offers flight deals from Dayton to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dayton to Washington, D.C. Dulles Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Dayton to Washington, D.C. Dulles Intl Airport (average of $77). Flying from Dayton to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $193). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Hanover
Herndon
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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Alternative routes for Dayton to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Dayton to Dulles Intl

Discover the top airline that operate flights from Dayton to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$189Average$299FlexibilityNo cancel feeOn-time69%

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