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Dulles Intl

$154+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — IAD
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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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

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3. Compare prices and book

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Cheapflights Tip: The best prices from Austin Bergstrom to Washington, D.C. Dulles Intl are usually found in August or July, booked 90 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 July 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:45 pm
AUS
-
IAD
1 stop13h 40m
Multiple Airlines
Tue 8/1811:05 am
IAD
-
AUS
1 stop24h 05m
Multiple Airlines
Deal found 7/19$252
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/152:51 pm
AUS
-
IAD
1 stop7h 01m
Frontier
Wed 8/198:59 am
IAD
-
AUS
2 stops15h 42m
Frontier
Deal found 7/20$253
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:45 pm
AUS
-
IAD
2 stops15h 05m
Multiple Airlines
Tue 8/117:48 am
IAD
-
AUS
1 stop9h 51m
Multiple Airlines
Deal found 7/19$257
This Frontier deal was found by Cheapflights users on 7/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:51 pm
AUS
-
IAD
1 stop7h 01m
Frontier
Sat 8/156:49 am
IAD
-
AUS
1 stop6h 49m
Frontier
Deal found 7/20$258
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:27 am
AUS
-
IAD
2 stops12h 01m
Multiple Airlines
Sun 11/18:16 am
IAD
-
AUS
1 stop25h 32m
Multiple Airlines
Deal found 7/19$259
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/152:51 pm
AUS
-
IAD
1 stop7h 01m
Frontier
Mon 8/177:48 am
IAD
-
AUS
1 stop5h 50m
Frontier
Deal found 7/19$260
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/71:33 pm
AUS
-
IAD
1 stop26h 01m
Frontier
Tue 8/1811:05 am
IAD
-
AUS
1 stop24h 05m
Frontier
Deal found 7/19$261
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/206:15 am
AUS
-
IAD
2 stops15h 37m
Frontier
Mon 8/248:39 pm
IAD
-
AUS
1 stop21h 00m
Frontier
Deal found 7/22$264
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:45 pm
AUS
-
IAD
2 stops15h 05m
Multiple Airlines
Sat 8/156:49 am
IAD
-
AUS
1 stop6h 49m
Multiple Airlines
Deal found 7/19$265
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:15 am
AUS
-
IAD
1 stop6h 54m
Frontier
Mon 10/199:16 pm
IAD
-
AUS
1 stop13h 32m
Frontier
Deal found 7/20$266
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:15 pm
AUS
-
IAD
2 stops12h 52m
Frontier
Wed 8/268:59 am
IAD
-
AUS
1 stop27h 53m
Frontier
Deal found 7/20$267
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/2110:50 am
AUS
-
IAD
1 stop5h 46m
Frontier
Fri 9/259:16 pm
IAD
-
AUS
1 stop13h 32m
Frontier
Deal found 7/22$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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$252
(Kiwi.com)

One-way from

$154
(Kiwi.com)

Popular in

January

Cheapest in

August

Average price

$440

Good round-trip deal

$425 or less

Good one-way deal

$264 or less
Provider with most accurate pricing for Austin Bergstrom-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Austin Bergstrom-Washington, D.C. Dulles Intl flights.
Search Deals
From Austin Bergstrom to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Austin Bergstrom to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Austin Bergstrom to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Austin Bergstrom to Washington, D.C. Dulles Intl.
Search Deals

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 July 23, 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
Quickest round-trip

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Thu 9/17

7:15 am-11:29 am

Nonstop3h 14m

Washington, D.C. Dulles Intl

Sat 9/19

12:38 pm-3:07 pm

Nonstop3h 29m

$377

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Wed 9/2

12:05 pm-4:21 pm

Nonstop3h 16m

Washington, D.C. Dulles Intl

Sat 9/12

10:41 am-4:23 pm

1 stop6h 42m

$387

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Fri 9/11

5:04 pm-9:20 pm

Nonstop3h 16m

Washington, D.C. Dulles Intl

Mon 9/14

6:00 pm-8:34 pm

Nonstop3h 34m

$402

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Wed 9/2

4:55 pm-9:11 pm

Nonstop3h 16m

Washington, D.C. Dulles Intl

Mon 9/14

12:35 pm-3:04 pm

Nonstop3h 29m

$427

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Sat 8/15

5:32 pm-12:44 am

1 stop6h 12m

Washington, D.C. Dulles Intl

Thu 8/20

6:00 pm-8:34 pm

Nonstop3h 34m

$437

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Fri 10/2

7:15 am-11:29 am

Nonstop3h 14m

Washington, D.C. Dulles Intl

Mon 10/5

12:35 pm-3:05 pm

Nonstop3h 30m

$455

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Sat 9/5

7:30 am-11:44 am

Nonstop3h 14m

Washington, D.C. Dulles Intl

Sun 9/6

12:35 pm-3:04 pm

Nonstop3h 29m

$467

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Wed 10/7

12:07 pm-4:23 pm

Nonstop3h 16m

Washington, D.C. Dulles Intl

Tue 10/13

8:30 am-11:01 am

Nonstop3h 31m

$467

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Fri 8/21

1:00 pm-9:20 pm

1 stop7h 20m

Washington, D.C. Dulles Intl

Mon 8/24

12:35 pm-3:04 pm

Nonstop3h 29m

$470

AustinWashington, D.C.

AUS - IAD

AUSIAD

Austin Bergstrom

Wed 8/12

2:24 pm-8:56 pm

1 stop5h 32m

Washington, D.C. Dulles Intl

Sat 8/15

6:00 pm-8:34 pm

Nonstop3h 34m

$477

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 23 resultsSorted by cheapest first
1
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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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
BudgetAirPrice Accuracy2 starsTrust Score*3 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?

Booking 87 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, August is the cheapest month in which you can book a flight from Austin to Washington, D.C. Dulles Intl Airport (average of $417). Flying from Austin to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $761). 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 July 23, 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?

Airfare is below average for this route at the moment.

Austin to Washington, D.C. Dulles Intl Airport flights typically cost between $328 and $545 in August.
The cheapest round-trip price found within the last 5 days was $252 on Multiple Airlines (Aug 2-Aug 18).

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.

Read more

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 July 23, 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.
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
Delta
7.8
Good
8,481 reviews
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
United Airlines
7.4
Good
10,025 reviews
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
Allegiant Air
7.3
Good
682 reviews
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
American Airlines
7.1
Good
11,836 reviews
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.
Frontier
5.6
Fair
2,771 reviews
Delta
7.8
Good
8,481 reviews

Comfort

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Stacey-Ann,Aug 2023

IAH - ATL

The staff made boarding as easy as possible. Although it was a full flight, everyone was seated in a timely manner and we arrived early.

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 6 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 United Airlines fly from Austin to Washington, D.C. Dulles Intl Airport in about 3h 14m. The time it takes to get you to your destination is usually consistent. Austin and Washington, D.C. Dulles Intl Airport are separated by a distance of 1295 mi. Most flights are nonstop.

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

    Delta, at $118, was found to be the cheapest airline from Austin to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Allegiant Air and Frontier. Delta is priced at 77% 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 ($102), and American Airlines ($136).

  • 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 Mesa Airlines (97%), United Airlines (93%) and Brussels Airlines (92%).

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

    On average you can expect to pay $1,552 for a flight from Austin to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $145 while the most popular route, (Austin Bergstrom - Washington, D.C. Dulles Intl) is currently priced at $207.

  • 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, August is the cheapest month in which you can book a flight from Austin to Washington, D.C. Dulles Intl Airport (average of $417). Flying from Austin to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $761). 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
Tysons
Arlington
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Sterling
Clinton
Hunt Valley
Cordova

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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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$552FlexibilityNo cancel feeOn-timeN/A
Allegiant AirCheapest$121Average$281FlexibilityNo cancel feeOn-time88%
FrontierCheapest$141Average$207FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$210Average$528FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$333Average$551FlexibilityNo cancel feeOn-time69%

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