Dulles Intl

$156+ Cheap flights from Austin (AUS) 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — IAD
Apr 9 — Apr 161
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Austin to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Austin Bergstrom to Washington, D.C. Dulles Intl are usually found in August or June, booked 81 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Austin to Dulles Intl

Cheapest flights from Austin to Dulles Intl
Explore the most affordable flight options available from Austin to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Mon 3/304:14 pm
AUS
-
IAD
1 stop7h 17m
Multiple Airlines
Wed 4/16:00 am
IAD
-
AUS
2 stops19h 24m
Multiple Airlines
Deal found 3/9$256
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Thu 5/145:40 pm
AUS
-
IAD
1 stop5h 56m
Multiple Airlines
Sat 5/167:05 am
IAD
-
AUS
2 stops17h 35m
Multiple Airlines
Deal found 3/6$257
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Fri 5/155:40 pm
AUS
-
IAD
2 stops12h 47m
Frontier
Mon 5/188:09 am
IAD
-
AUS
1 stop12h 37m
Frontier
Deal found 3/9$258
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/133:52 pm
AUS
-
IAD
Nonstop3h 21m
Multiple Airlines
Thu 7/1612:50 pm
IAD
-
AUS
2 stops22h 10m
Multiple Airlines
Deal found 3/8$259
This Frontier deal was found by Cheapflights users on 3/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:40 pm
AUS
-
IAD
1 stop5h 56m
Frontier
Sat 5/167:05 am
IAD
-
AUS
1 stop10h 40m
Frontier
Deal found 3/9$260
This CheapOair deal was found by Cheapflights users on 3/5. 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 8/215:16 pm
AUS
-
IAD
1 stop16h 14m
Frontier
Thu 8/275:28 pm
IAD
-
AUS
1 stop23h 53m
Frontier
Deal found 3/5$261
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/103:52 pm
AUS
-
IAD
Nonstop3h 21m
Multiple Airlines
Fri 7/175:28 pm
IAD
-
AUS
1 stop23h 53m
Multiple Airlines
Deal found 3/8$262
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Fri 5/155:40 pm
AUS
-
IAD
2 stops12h 47m
Frontier
Sun 5/178:09 am
IAD
-
AUS
1 stop12h 37m
Frontier
Deal found 3/9$263
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 4/258:50 pm
AUS
-
IAD
2 stops11h 06m
Frontier
Sun 4/2611:17 am
IAD
-
AUS
1 stop9h 08m
Frontier
Deal found 3/7$265
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Wed 5/139:25 am
AUS
-
IAD
2 stops14h 11m
Multiple Airlines
Sun 5/178:09 am
IAD
-
AUS
1 stop12h 37m
Multiple Airlines
Deal found 3/9$266
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:16 pm
AUS
-
IAD
1 stop22h 57m
Multiple Airlines
Fri 7/174:30 pm
IAD
-
AUS
Nonstop3h 16m
Multiple Airlines
Deal found 3/8$267
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Fri 4/104:44 pm
AUS
-
IAD
1 stop6h 52m
Multiple Airlines
Tue 4/146:05 am
IAD
-
AUS
2 stops10h 59m
Multiple Airlines
Deal found 3/9$268

Find flight deals from Austin to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$256
(Kiwi.com)

One-way from

$156
(Kiwi.com)

Popular in

January

Cheapest in

August

Average price

$551

Good round-trip deal

$524 or less

Good one-way deal

$268 or less
Provider with most accurate pricing for Austin Bergstrom-Washington, D.C. Dulles Intl flight deals.
Provider most trusted by Cheapflights users for Austin Bergstrom-Washington, D.C. Dulles Intl flights.
From Austin Bergstrom to Washington, D.C. Dulles Intl
One-way flight from Austin Bergstrom to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 18% potential increase in price ($109 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from Austin Bergstrom to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Austin Bergstrom to Washington, D.C. Dulles Intl.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin 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 March 10, 2026.
Use the filters below to find and compare flights from Austin to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Tue 5/5

6:30 am-2:04 pm

1 stop6h 34m

Washington, D.C. Dulles Intl

Sat 5/16

6:00 am-10:59 am

1 stop5h 59m

$301

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Wed 5/20

5:25 am-11:39 am

1 stop5h 14m

Washington, D.C. Dulles Intl

Mon 5/25

3:08 pm-8:33 pm

1 stop6h 25m

$405

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Fri 4/3

5:22 am-11:52 am

1 stop5h 30m

Washington, D.C. Dulles Intl

Mon 4/6

6:01 am-10:55 am

1 stop5h 54m

$410

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Fri 4/17

2:10 pm-8:56 pm

1 stop5h 46m

Washington, D.C. Dulles Intl

Mon 4/20

5:55 pm-8:43 pm

Nonstop3h 48m

$454

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Tue 4/7

7:15 am-11:31 am

Nonstop3h 16m

Washington, D.C. Dulles Intl

Fri 4/10

8:30 am-3:24 pm

1 stop7h 54m

$454

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Fri 5/8

7:15 am-11:31 am

Nonstop3h 16m

Washington, D.C. Dulles Intl

Mon 5/11

12:55 pm-3:41 pm

Nonstop3h 46m

$472

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Sat 5/23

5:09 pm-12:45 am

1 stop6h 36m

Washington, D.C. Dulles Intl

Sun 5/31

6:00 pm-8:35 pm

Nonstop3h 35m

$474

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Tue 4/14

7:15 am-11:31 am

Nonstop3h 16m

Washington, D.C. Dulles Intl

Sat 4/18

12:50 pm-3:49 pm

Nonstop3h 59m

$478
Quickest round-trip

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Thu 5/28

7:15 am-11:33 am

Nonstop3h 18m

Washington, D.C. Dulles Intl

Wed 6/3

6:00 pm-8:35 pm

Nonstop3h 35m

$479

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Thu 4/9

12:14 pm-4:30 pm

Nonstop3h 16m

Washington, D.C. Dulles Intl

Mon 4/13

5:55 pm-8:43 pm

Nonstop3h 48m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Austin 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 Austin to Dulles Intl in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust 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 Austin-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 Austin-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Austin-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 Austin-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Austin-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 Austin to Dulles Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Austin to Dulles Intl. Price data was last updated on March 6, 2026.

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from Austin to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, June is the cheapest month in which you can book a flight from Austin to Washington, D.C. Dulles Intl Airport (average of $100). Flying from Austin to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $329). 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 AUS to IAD?

Find hourly flight availability from Austin 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 March 10, 2026.

A simple way to save on the total cost of your ticket is to fly from Austin to Washington, D.C. Dulles Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 43% on your trip compared to booking a flight at noon.

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

The best insider tips for Austin to Washington, D.C. Dulles Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Austin to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on IAD and AUS

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.

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 March 10, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAllegiant Air from Austin to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Austin 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 Austin to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Austin, you will be flying from Austin Bergstrom, which is the city’s only airport. Austin Bergstrom (AUS) is located 7.5 mi from the center of Austin. There are 2 flights from Austin Bergstrom to Washington, D.C. Dulles Intl per day from 5 different airlines.

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

    Airlines like Delta and United Airlines fly from Austin to Washington, D.C. Dulles Intl Airport in about 5h 46m. The time it takes to get you to your destination can typically vary by up to 48m. Austin and Washington, D.C. Dulles Intl Airport are separated by a distance of 1295 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 Austin to Washington, D.C. Dulles Intl Airport round-trip?

    Allegiant Air, at $92, was found to be the cheapest airline from Austin to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Delta and Frontier. Allegiant Air is priced at 81% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airlines for a one-way flight from Austin to Washington, D.C. Dulles Intl Airport are Frontier ($75), Allegiant Air ($75), and American Airlines ($118).

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

    The top 3 most reliable airlines when flying from Austin to Washington, D.C. Dulles Intl Airport are Brussels Airlines (90%), United Airlines (86%) and Mesa Airlines (83%).

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

    On average you can expect to pay $939 for a flight from Austin to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $198 while the most popular route, (Austin Bergstrom - Washington, D.C. Dulles Intl) is currently priced at $141.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from Austin to Washington, D.C. Dulles Intl Airport (average of $100). Flying from Austin to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $329). 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
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from Austin to Dulles Intl

Discover the top 5 airlines that operate flights from Austin 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$92Average$161FlexibilityNo cancel feeOn-time88%
DeltaCheapest$118Average$368FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$141Average$205FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$210Average$431FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$275Average$502FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.