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Dulles Intl

$65+ Cheap flights from Dallas 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — IAD
Aug 22 — Aug 291
Fri 8/22
Fri 8/29
1 adult, Economy
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Cheapflights Tip: The best prices from Dallas to Washington, D.C. Dulles Intl are usually found in August or July, booked 77 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Dallas to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dallas (A78) 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 August 17, 2025.

Round-trip from

$119
(Frontier)

One-way from

$65
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$197
From Dallas to Washington, D.C. Dulles Intl
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One-way flight from Dallas to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 16% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Dallas to Dulles Intl

Cheapest flights from Dallas to Dulles Intl
Explore the most affordable flight options available from Dallas to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 17, 2025.

This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:15 amDFW - IAD
Nonstop3h 02mFrontier
Thu 9/41:55 pmIAD - DFW
1 stop6h 59mFrontier
Deal found 8/17$119
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:15 amDFW - IAD
Nonstop3h 02mFrontier
Mon 9/81:55 pmIAD - DFW
1 stop6h 59mFrontier
Deal found 8/17$120
This Frontier deal was found by Cheapflights users on 8/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/611:00 amDFW - IAD
1 stop6h 24mFrontier
Fri 9/1210:17 amIAD - DFW
Nonstop3h 17mFrontier
Deal found 8/15$122
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/138:00 amDFW - IAD
Nonstop3h 02mFrontier
Sat 9/207:14 pmIAD - DFW
1 stop15h 50mFrontier
Deal found 8/17$123
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:00 amDFW - IAD
Nonstop3h 02mFrontier
Mon 10/610:17 amIAD - DFW
Nonstop3h 17mFrontier
Deal found 8/16$124
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/315:25 amDFW - IAD
Nonstop3h 02mFrontier
Sun 9/71:55 pmIAD - DFW
1 stop9h 13mFrontier
Deal found 8/17$125
This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/37:09 pmDFW - IAD
1 stop16h 46mFrontier
Sat 9/61:02 pmIAD - DFW
Nonstop3h 17mFrontier
Deal found 8/17$126
This CheapOair deal was found by Cheapflights users on 8/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/128:18 pmDFW - IAD
1 stop21h 06mFrontier
Sun 9/2110:17 amIAD - DFW
Nonstop3h 17mFrontier
Deal found 8/15$127
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/118:00 amDFW - IAD
Nonstop2h 59mFrontier
Sun 10/123:10 pmIAD - DFW
1 stop7h 03mFrontier
Deal found 8/17$128
This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:15 amDFW - IAD
Nonstop3h 02mFrontier
Fri 10/109:38 pmIAD - DFW
1 stop25h 42mFrontier
Deal found 8/17$129
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/111:51 pmDFW - IAD
1 stop9h 05mFrontier
Mon 10/1310:04 amIAD - DFW
Nonstop3h 22mFrontier
Deal found 8/17$130
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:15 amDFW - IAD
Nonstop3h 02mFrontier
Fri 10/310:17 amIAD - DFW
Nonstop3h 17mFrontier
Deal found 8/16$132

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dallas 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 August 17, 2025.
Use the filters below to find and compare flights from Dallas to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Dallas

Fly to

Dulles Intl

Route

Depart

Return

Price

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Fri 10/17

2:03 pm-12:11 am

1 stop9h 08m

Washington, D.C. Dulles Intl

Sat 10/25

12:54 pm-3:16 pm

Nonstop3h 22m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Tue 10/14

12:00 pm-7:46 pm

1 stop6h 46m

Washington, D.C. Dulles Intl

Fri 10/24

10:11 am-12:33 pm

Nonstop3h 22m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Sat 10/11

8:00 am-11:59 am

Nonstop2h 59m

Washington, D.C. Dulles Intl

Tue 10/21

9:00 am-6:07 pm

1 stop10h 07m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Sat 10/11

8:00 am-11:59 am

Nonstop2h 59m

Washington, D.C. Dulles Intl

Wed 10/15

9:00 am-6:10 pm

1 stop10h 10m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Wed 10/15

12:00 pm-7:46 pm

1 stop6h 46m

Washington, D.C. Dulles Intl

Fri 10/24

10:11 am-12:33 pm

Nonstop3h 22m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Thu 9/4

5:45 pm-12:15 am

1 stop5h 30m

Washington, D.C. Dulles Intl

Fri 9/12

10:17 am-12:34 pm

Nonstop3h 17m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Mon 10/6

5:15 am-9:17 am

Nonstop3h 02m

Washington, D.C. Dulles Intl

Wed 10/8

9:00 am-6:07 pm

1 stop10h 07m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Mon 9/15

1:53 pm-12:15 am

1 stop9h 22m

Washington, D.C. Dulles Intl

Mon 9/22

10:17 am-12:34 pm

Nonstop3h 17m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Sat 9/6

8:00 am-12:02 pm

Nonstop3h 02m

Washington, D.C. Dulles Intl

Mon 9/8

1:55 pm-10:08 pm

1 stop9h 13m

$119

DallasWashington, D.C.

DFW - IAD

DFWIAD

Dallas/Fort Worth

Thu 10/16

9:06 am-3:39 pm

1 stop5h 33m

Washington, D.C. Dulles Intl

Mon 10/20

10:04 am-12:26 pm

Nonstop3h 22m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 28 results
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The best insider tips for Dallas to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Dallas to Washington, D.C. Dulles Intl Airport trip
Airports
DFW

DFW offers a DART Orange Line connecting downtown Dallas to Terminal A, making public transit a viable option for reaching the airport.

Read more about DFWby Chris Dong
IAD

The Washington Metro Silver Line reaches IAD in under 40 minutes, offering a cost-effective way to travel to the city.

Read more about IADby Ramsey Qubein
Our travel experts
Chris Dong

Chris Dong

Expert on DFW

Chris Dong

Chris Dong

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Dallas to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Dallas 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 Dallas to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Dallas to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Dallas to Dulles Intl. Price data was last updated on August 8, 2025.

The price you pay for your flight from Dallas to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, July is the cheapest month in which you can book a flight from Dallas to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Dallas 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 DFW to IAD?

Find hourly flight availability from Dallas 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 August 17, 2025.

When flying from Dallas to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 63% versus a flight at noon.

What is the cheapest day to fly from Dallas to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Dallas to Dulles Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Dallas to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Dallas to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Dallas to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 17, 2025.

The most flights from A78 to IAD are scheduled on a Sunday (16 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).

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 August 17, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Dallas to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,986 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,986 reviews
Delta
8.0
Very good
7,986 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,919 reviews
Delta
8.0
Very good
7,986 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,986 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,038 reviews
Delta
8.0
Very good
7,986 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,212 reviews
Delta
8.0
Very good
7,986 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Dallas 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 are the cheapest airlines flying from Dallas to Washington, D.C. Dulles Intl Airport round-trip?

    Our cheapest airline available from Dallas to Washington, D.C. Dulles Intl Airport is Frontier. Our recent data shows that you can find tickets from as low as $84 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $107 and $134 round-trip. Frontier is currently priced 70% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $65. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Dallas to Washington, D.C. Dulles Intl Airport for a low price.

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

    The top 3 most reliable airlines when flying from Dallas to Washington, D.C. Dulles Intl Airport are Frontier (100%), GOL (100%) and Iberia (84%).

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

    Looking at all options, your cheapest flight can be booked for $54. While the most popular route (Dallas/Fort Worth - Washington, D.C. Dulles Intl) can be booked for $78 on average our data indicates $863 when flying from Dallas to Washington, D.C. Dulles Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dallas 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 Dallas to Washington, D.C. Dulles Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Dallas to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Dallas 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
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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Alternative routes for Dallas to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Dallas to Dulles Intl

Discover the top 5 airlines that operate flights from Dallas 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 August 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$152FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$107Average$223FlexibilityNo cancel feeOn-time65%
DeltaCheapest$134Average$389FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$157Average$300FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$195Average$367FlexibilityNo cancel feeOn-time69%

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