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Dulles Intl

$90+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — IAD
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheap 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 September 19, 2025.

Round-trip from

$189
(United Airlines)

One-way from

$90
(United Airlines)

Popular in

November

Cheapest in

October

Average price

$364

Good round-trip deal

$285 or less

Good one-way deal

$199 or less
From Dayton to Washington, D.C. Dulles Intl
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One-way flight from Dayton to Washington, D.C. Dulles Intl
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High demand for flights, 6% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Dayton to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Dayton to Washington, D.C. Dulles Intl.
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Find 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 September 19, 2025.

This United Airlines deal was found by Cheapflights users on 9/18. 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 11/77:45 pmDAY - IAD
Nonstop1h 32mUnited Airlines
Tue 11/1112:35 pmIAD - DAY
Nonstop1h 39mUnited Airlines
Deal found 9/18$189
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/87:43 pmDAY - IAD
Nonstop1h 38mUnited Airlines
Thu 10/1612:35 pmIAD - DAY
Nonstop1h 37mUnited Airlines
Deal found 9/18$194
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/37:43 pmDAY - IAD
Nonstop1h 38mUnited Airlines
Mon 10/68:15 amIAD - DAY
Nonstop1h 35mUnited Airlines
Deal found 9/17$199
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/107:43 pmDAY - IAD
Nonstop1h 38mUnited Airlines
Sun 10/1212:35 pmIAD - DAY
Nonstop1h 37mUnited Airlines
Deal found 9/18$207
This Delta deal was found by Cheapflights users on 9/17. 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.
Thu 11/206:34 pmDAY - IAD
1 stop5h 44mDelta
Mon 11/247:01 amIAD - DAY
1 stop5h 36mDelta
Deal found 9/17$209
This Delta deal was found by Cheapflights users on 9/17. 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.
Wed 10/16:37 pmDAY - IAD
1 stop4h 40mDelta
Wed 10/86:00 amIAD - DAY
1 stop4h 24mDelta
Deal found 9/17$214
This Delta deal was found by Cheapflights users on 9/17. 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 10/36:37 pmDAY - IAD
1 stop5h 36mDelta
Tue 10/77:05 amIAD - DAY
1 stop5h 39mDelta
Deal found 9/17$219
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/810:25 amDAY - IAD
Nonstop1h 37mUnited Airlines
Mon 10/1312:35 pmIAD - DAY
Nonstop1h 37mUnited Airlines
Deal found 9/18$223
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Mon 9/2910:25 amDAY - IAD
Nonstop1h 37mUnited Airlines
Sat 10/48:15 amIAD - DAY
Nonstop1h 35mUnited Airlines
Deal found 9/17$224
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 9/3011:15 amDAY - IAD
1 stop5h 12mDelta
Thu 10/96:00 amIAD - DAY
1 stop4h 24mDelta
Deal found 9/17$239
This Trip.com deal was found by Cheapflights users on 9/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:50 pmDAY - IAD
Nonstop1h 29mUnited Airlines
Sun 11/212:35 pmIAD - DAY
Nonstop1h 39mUnited Airlines
Deal found 9/17$243
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 9/3011:15 amDAY - IAD
1 stop5h 12mDelta
Tue 10/76:00 amIAD - DAY
1 stop4h 24mDelta
Deal found 9/17$244

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 September 19, 2025.
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

Fri 11/7

7:45 pm-9:17 pm

Nonstop1h 32m

Washington, D.C. Dulles Intl

Tue 11/11

12:35 pm-2:14 pm

Nonstop1h 39m

$189

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Wed 10/15

7:43 pm-9:21 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Wed 10/22

8:15 am-9:50 am

Nonstop1h 35m

$189

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Fri 10/24

7:43 pm-9:21 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Sun 10/26

8:15 am-9:52 am

Nonstop1h 37m

$189

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Wed 10/8

7:43 pm-9:21 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Thu 10/16

12:35 pm-2:12 pm

Nonstop1h 37m

$194

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Sat 10/11

2:47 pm-4:25 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Mon 10/13

8:15 am-9:50 am

Nonstop1h 35m

$207

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Fri 10/10

7:43 pm-9:21 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Sun 10/12

12:35 pm-2:12 pm

Nonstop1h 37m

$207

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Sat 10/18

6:05 am-10:11 am

1 stop4h 06m

Washington, D.C. Dulles Intl

Sat 10/25

6:00 am-10:24 am

1 stop4h 24m

$209

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Wed 10/15

11:09 am-4:57 pm

1 stop5h 48m

Washington, D.C. Dulles Intl

Wed 10/22

6:00 am-10:24 am

1 stop4h 24m

$209

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Thu 11/20

6:34 pm-12:18 am

1 stop5h 44m

Washington, D.C. Dulles Intl

Mon 11/24

7:01 am-12:37 pm

1 stop5h 36m

$209

DaytonWashington, D.C.

DAY - IAD

DAYIAD

Dayton

Fri 10/3

6:37 pm-12:13 am

1 stop5h 36m

Washington, D.C. Dulles Intl

Tue 10/7

7:05 am-12:44 pm

1 stop5h 39m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 20 results
1
2

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, August is the cheapest month in which you can book a flight from Dayton to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Dayton to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 September 19, 2025.

It’s optimal to fly from Dayton to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 59% on the cost of your flight, compared to a flight at noon.

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 September 19, 2025.
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
8,926 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

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 9 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 32m. Dayton and Washington, D.C. Dulles Intl Airport are separated by a distance of 367 mi. Generally, flights for this route are nonstop.

  • 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 41% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Dayton to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $90. American Airlines flights start at $160 while deals on Delta start at $160 one-way.

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

    Consider GoJet (100%), Copa Airlines (93%) or Avianca (87%) 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 $1,896, our data shows the cheapest flight currently is $119. When looking at the most popular route, (Dayton - Washington, D.C. Dulles Intl), you can expect to pay $179 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, August is the cheapest month in which you can book a flight from Dayton to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Dayton to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

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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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Pittsburgh to Baltimore flights
Columbus to Reagan-National flights
Pittsburgh to Reagan-National flights
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Dayton to Reagan-National flights
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Akron to Reagan-National flights
Akron to Baltimore flights
Erie to Reagan-National flights
Erie to Baltimore flights
Erie to Dulles Intl flights
Toledo to Baltimore flights
Toledo to Reagan-National flights
Toledo to Dulles Intl flights

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 September 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$189Average$307FlexibilityNo cancel feeOn-time69%

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