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$70+ Cheap flights from Dulles Intl (IAD) to Dallas

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DFW
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Dallas are usually found in July or August, booked 66 days in advance, depart on a Friday or Saturday and return on a Friday

Cheap flight deals from Dulles Intl to Dallas

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Dallas (A78). 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 11, 2025.

Round-trip from

$122
(Cheapflightsfares)

One-way from

$70
(American Airlines)

Popular in

April

Cheapest in

July

Average price

$273
From Washington, D.C. Dulles Intl to Dallas
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One-way flight from Washington, D.C. Dulles Intl to Dallas
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Highest demand for flights based on searches. 12% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dulles Intl to Dallas

Cheapest flights from Dulles Intl to Dallas
Explore the most affordable flight options available from Dulles Intl to Dallas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2510:17 amIAD - DFW
Nonstop3h 17mFrontier
Mon 9/295:15 amDFW - IAD
Nonstop3h 02mFrontier
Deal found 9/9$122
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2610:17 amIAD - DFW
Nonstop3h 17mFrontier
Sun 9/285:15 amDFW - IAD
Nonstop3h 02mFrontier
Deal found 9/10$123
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2510:17 amIAD - DFW
Nonstop3h 17mFrontier
Sun 10/55:15 amDFW - IAD
Nonstop3h 02mFrontier
Deal found 9/11$124
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2512:54 pmIAD - DFW
Nonstop3h 22mFrontier
Sun 10/269:19 pmDFW - IAD
1 stop23h 19mFrontier
Deal found 9/9$125
This CheapOair deal was found by Cheapflights users on 9/9. 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.
Wed 10/159:00 amIAD - DFW
1 stop10h 10mFrontier
Sat 10/188:00 amDFW - IAD
Nonstop2h 59mFrontier
Deal found 9/9$127
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2410:11 amIAD - DFW
Nonstop3h 22mFrontier
Mon 10/275:10 amDFW - IAD
Nonstop2h 59mFrontier
Deal found 9/11$128
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2510:17 amIAD - DFW
Nonstop3h 17mFrontier
Sun 9/285:15 amDFW - IAD
Nonstop3h 02mFrontier
Deal found 9/11$129
This Mytrip deal was found by Cheapflights users on 9/8. 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.
Fri 9/193:15 pmIAD - DFW
1 stop7h 56mFrontier
Mon 9/225:15 amDFW - IAD
Nonstop3h 02mFrontier
Deal found 9/8$130
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/271:02 pmIAD - DFW
Nonstop3h 17mFrontier
Sat 10/186:43 amDFW - IAD
1 stop7h 43mFrontier
Deal found 9/9$131
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1112:54 pmIAD - DFW
Nonstop3h 22mFrontier
Mon 10/135:10 amDFW - IAD
Nonstop2h 59mFrontier
Deal found 9/11$132
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/255:37 pmIAD - DFW
Nonstop3h 36mAmerican Airlines
Wed 10/296:53 pmDFW - IAD
Nonstop2h 58mAmerican Airlines
Deal found 9/10$133
This CheapOair deal was found by Cheapflights users on 9/11. 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 9/263:15 pmIAD - DFW
1 stop7h 56mFrontier
Sat 9/278:00 amDFW - IAD
Nonstop3h 02mFrontier
Deal found 9/11$134

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Dallas 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 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Dallas that are best for you.

Fly from

Dulles Intl

Fly to

Dallas

Route

Depart

Return

Price

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Tue 10/21

5:20 pm-7:36 pm

Nonstop3h 16m

Dallas/Fort Worth

Tue 10/28

5:35 pm-9:24 pm

Nonstop2h 49m

$149

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Wed 10/1

5:20 pm-7:37 pm

Nonstop3h 17m

Dallas/Fort Worth

Sat 10/4

11:32 am-3:35 pm

Nonstop3h 03m

$159

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Wed 10/8

6:01 am-11:06 am

1 stop6h 05m

Dallas/Fort Worth

Wed 10/15

5:25 pm-9:25 pm

Nonstop3h 00m

$188

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Sun 11/2

8:30 am-11:06 am

Nonstop3h 36m

Dallas/Fort Worth

Sat 11/15

2:16 pm-8:52 pm

1 stop5h 36m

$204

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Sat 10/4

5:20 pm-7:37 pm

Nonstop3h 17m

Dallas/Fort Worth

Sun 10/12

5:46 pm-11:51 pm

1 stop5h 05m

$210

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Tue 10/7

5:20 pm-7:36 pm

Nonstop3h 16m

Dallas/Fort Worth

Wed 10/8

5:25 pm-9:25 pm

Nonstop3h 00m

$210

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Tue 9/30

5:20 pm-7:36 pm

Nonstop3h 16m

Dallas/Fort Worth

Wed 10/8

2:25 pm-9:00 pm

1 stop5h 35m

$223

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Wed 11/19

5:39 pm-8:15 pm

Nonstop3h 36m

Dallas/Fort Worth

Fri 11/28

12:10 pm-4:00 pm

Nonstop2h 50m

$229

Washington, D.C.Dallas

IAD - DAL

IADDAL

Washington, D.C. Dulles Intl

Fri 10/24

7:25 am-3:10 pm

2 stops8h 45m

Dallas Love Field

Tue 10/28

1:50 pm-11:05 pm

1 stop8h 15m

$230

Washington, D.C.Dallas

IAD - DFW

IADDFW

Washington, D.C. Dulles Intl

Wed 11/19

12:54 pm-3:30 pm

Nonstop3h 36m

Dallas/Fort Worth

Sun 11/23

2:26 pm-9:23 pm

1 stop5h 57m

$230

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 41 results
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The best insider tips for Washington, D.C. Dulles Intl Airport to Dallas 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 Washington, D.C. Dulles Intl Airport to Dallas trip
Airports
IAD

Expect long security queues at IAD, especially in the afternoon. Plan ahead to ensure a smooth departure experience.

Read more about IADby Ramsey Qubein
DFW

Use the DART Orange Line for a convenient train ride from DFW to downtown Dallas, with a station at Terminal A.

Read more about DFWby Chris Dong
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 Dulles Intl to Dallas

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Dallas. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Dallas, you should look to book at least 66 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Dallas (average of $216). Flying from Washington, D.C. Dulles Intl Airport to Dallas in March is currently the most expensive (average of $295). 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 IAD to DFW?

Find hourly flight availability from Dulles Intl to Dallas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Dallas is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 75% on airfare.

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

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

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

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

Explore weekly flight availability from Dulles Intl to Dallas. 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 September 11, 2025.

The most flights from IAD to A78 are scheduled on a Thursday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

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

Reviews of airlines servicing Dallas

Get insights into the airlines that provide service to Dallas. 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 Dallas. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Washington, D.C. Dulles Intl Airport to Dallas. 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
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
8,023 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
3,177 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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 Dulles Intl to Dallas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    United Airlines, Southwest, and Delta can get you from Washington, D.C. Dulles Intl Airport to Dallas in just under 3h 16m. Your travel time can differ by up to 5h 29m. The distance between Washington, D.C. Dulles Intl Airport and Dallas is about 1169 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Dallas round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Dallas round-trip from $62. Other airlines that can offer you cheap pricing are Frontier, from $93, and Southwest, from $140. These flights start at 78% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $83. Southwest flights start at $102 while deals on Delta start at $119 one-way.

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

    Consider Mesa Airlines (96%), Frontier (93%) or Royal Air Maroc (88%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Dallas.

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

    On average you can expect to pay $854 for a flight from Washington, D.C. Dulles Intl Airport to Dallas. The cheapest flight overall is $53 while the most popular route, (Washington, D.C. Dulles Intl - Dallas/Fort Worth) is currently priced at $69.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Dallas (average of $216). Flying from Washington, D.C. Dulles Intl Airport to Dallas in March is currently the most expensive (average of $295). 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

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Alternative routes for Dulles Intl to Dallas

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dallas/Fort Worth flights
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Reagan-National to Dallas/Fort Worth flights
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Dulles Intl to Waco flights
Dulles Intl to Midland flights
Reagan-National to Midland flights
Reagan-National to College Station flights
Baltimore to College Station flights
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Top 6 airlines flying from Dulles Intl to Dallas

Discover the top 6 airlines that operate flights from Dulles Intl to Dallas. 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$62Average$172FlexibilityNo cancel feeOn-time65%
FrontierCheapest$93Average$159FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$140Average$508FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$159Average$300FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$374FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$318FlexibilityNo cancel feeOn-timeN/A

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