Cheap flights from Washington, D.C. Dulles Intl Airport to Austin from $156

The cheapest month to fly to Austin from Washington, D.C. Dulles Intl Airport is in August. Flight prices, which tend to average around $458, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in August, then September is your next best option. Flight prices from Washington, D.C. Dulles Intl Airport to Austin during September average around $470.

The cheapest day to depart on your flight to Austin is on a Saturday when prices can be found for as low as $495. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to Austin for around $676.

In the afternoon is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Austin when you can find flight prices for as low as $535. Flying to Austin in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly at noon, with an average ticket price of $570. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Washington, D.C. Dulles Intl to Austin Bergstrom for the best Washington, D.C. Dulles Intl - Austin Bergstrom flight prices

You are more likely to see cheaper flights to Austin from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Austin for around $537 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Austin from Washington, D.C. Dulles Intl Airport for as low as $287 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport to Austin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 4% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Austin flight.

As of August 2026, prices for Washington, D.C. Dulles Intl Airport to Austin flights are approximately 1% cheaper when compared to flights at the same time last year.

United Airlines and American Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Austin Bergstrom

United Airlines, Frontier and Allegiant Air are the top three most popular airlines that fly to Austin from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 87% of people opting to fly with this airline when traveling to Austin. Keep in mind that there are 6 different airlines that fly to Austin on a routine basis, so you have a few additional options to choose from.

Atlanta (ATL) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $349.

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 8h 04m.

Houston (IAH) has the shortest average layover time for this route: 2h 08m.

3 flights are operational daily from Washington, D.C. Dulles Intl Airport to Austin as of August 2026. The most popular departure time for this route is 6:00PM, with 72% of flights per day taking off in the evening.

The number of flights available between Washington, D.C. Dulles Intl Airport and Austin is 22 per week as of August 2026. The most frequent departure day is Mon, with 27% of weekly flights leaving on this day.