$70 Cheap Flights from Washington (IAD) to Austin (AUS)

Washington (IAD) to Austin (AUS) at a glance

Travel from Washington Dulles International Airport (IAD) to Austin-Bergstrom International Airport (AUS) with a range of airlines on this domestic short-haul route. Compare flights from various full-service and low-cost carriers to discover the itinerary that aligns with your budget and schedule as you plan your visit to explore the vibrant sights and neighborhoods of Austin. Here you'll find essential details for your journey from Washington to Austin.

• Fastest flight duration: around 3h 45m non-stop
• Route distance: roughly 1,300 miles (2,090 km)
• Flights per week: around 20+ flights with multiple daily departures on average
• Typical fares (one-way): economy tickets often range from $100–$545, depending on seasonality and how far ahead you book

Flights from Washington Dulles International Airport (IAD) to Austin-Bergstrom International Airport (AUS)

According to recent traveler bookings, the top airlines flying from Washington to Austin are favored for both non-stop and one-stop flights. Popular layover options include Hartsfield-Jackson Atlanta International Airport (ATL) with a layover time of about 1 hour and 45 minutes, Charlotte-Douglas International Airport (CLT) at approximately 1 hour and 15 minutes, and Dallas-Fort Worth International Airport (DFW), also around 1 hour and 15 minutes. These choices provide flexibility in balancing price, total travel duration, and cabin class to help you find the ideal itinerary.

• United: As a full-service airline, United provides both non-stop and one-stop options, with one-way fares generally between $115 and $570. It dominates this route, representing around 81% of departures, with non-stop flights taking about 3 hours and 45 minutes.
• American Airlines: This full-service airline offers one-stop journeys, with one-way ticket prices typically ranging from $100 to $510. It contributes roughly 7% of the departures on this route, featuring an in-flight duration of 4 hours and 45 minutes, leading to an overall travel time of about 6 hours and 15 minutes when including the layover.
• Delta: Delta operates as a full-service carrier providing one-stop services, with one-way fares usually between $120 and $535. This airline accounts for around 7% of departures on this route, with a flight time of 4 hours and 45 minutes, resulting in a total journey time of approximately 6 hours and 15 minutes, including layover time.
• Frontier Airlines: As a low-cost option, Frontier Airlines offers one-stop service, with one-way fares typically falling between $100 and $230. It represents about 5% of the departures on this route, featuring an in-flight duration of 4 hours and 45 minutes and a total travel time of approximately 6 hours and 15 minutes, including layover.
• Southwest Airlines: This low-cost carrier provides one-stop services, with one-way fares generally ranging from $160 to $425. Southwest makes up about 1% of departures on this route, offering an in-flight time of 4 hours and 45 minutes, leading to a total journey time of around 6 hours and 15 minutes, including the layover.

Travelers flying from Washington to Austin can opt to enhance their experience by upgrading to United's first class or premium economy service on this route.

Best time to fly from Washington (IAD) to Austin (AUS)

The most popular months for travelers flying from Washington to Austin are March, April, and October, when peak temperatures in Austin reach up to 70.7°F in October. If you prefer quieter travel, consider July, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 85.1°F. For better deals, August usually offers the lowest average one-way fare around $231. Flight availability peaks in June and October, with approximately 23 flights per week, making it easier to find convenient departure times. January and February have the fewest flights, with approximately 16 flights per week.

• Cheapest time to fly: August usually offers good deals with average one-way fare around $231, roughly 24% cheaper than the yearly average.
• Most flight options: June and October have the highest number of flights from Washington to Austin, with approximately 23 flights per week, giving you more flexibility in scheduling your trip.

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Washington (IAD) to Austin (AUS)

• Washington to San Antonio (IAD-SAT): San Antonio International Airport (SAT) is located approximately 67 miles from Austin-Bergstrom International Airport (AUS). One-way economy fares for this journey generally fall between $110 and $425, influenced by the season and how far in advance you book. Travelers can choose from both non-stop and one-stop flight options. Major airlines operating on this route include United and Delta. First-class service is also offered for those seeking a more luxurious experience.
• Washington to Austin (DCA-AUS): Ronald Reagan Washington National Airport (DCA) is about 23 miles from Washington Dulles International Airport (IAD). Economy fares for one-way flights on this route typically range from $100 to $510, varying with the season and booking timing. The route is available with both non-stop and one-stop flights, often with layovers at Dallas-Fort Worth International Airport (DFW) and Denver International Airport (DEN). Southwest Airlines (a low-cost carrier) and American Airlines are among the top airlines flying this route, with first-class options available.
• Washington to San Antonio (DCA-SAT): Ronald Reagan Washington National Airport (DCA) is situated roughly 23 miles from Washington Dulles International Airport (IAD), while San Antonio International Airport (SAT) is about 67 miles from Austin-Bergstrom International Airport (AUS). One-way economy fares on this route usually vary from $95 to $400, depending on seasonality and booking lead time. Both non-stop and one-stop flights are offered, with popular layover locations including Hartsfield-Jackson Atlanta International Airport (ATL) and George Bush Intercontinental Airport (IAH). American Airlines and Southwest Airlines (a low-cost option) are among the leading carriers, with first-class service available.

How to find the best prices for flights from Washington (IAD) to Austin (AUS)

Getting some of the best deals on flights from Washington to Austin is all about timing and flexibility. Here are some key tips to help you save:

1. Best times to book and fly: cheaper fares are typically available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Morning departures from 5am to 12pm often offer lower prices, while afternoon flights from 12pm to 6pm are more popular. Additionally, flying on Saturday usually results in cheaper prices, but Thursday remains the busiest travel day.
2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Austin-Bergstrom International Airport from Washington Dulles International Airport

Austin welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Washington Dulles International Airport is roughly a 40-minute drive (covering about 29 miles) from central Washington. Here's how to reach Austin efficiently:

• Hotel transfer: Transfers offer a convenient way to reach your hotel in Austin, with private rides that can be arranged in advance.
• Car rental: Renting a car from Austin-Bergstrom International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Austin-Bergstrom International Airport on Expedia.
• Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
• Public transportation: From Austin-Bergstrom International Airport, Plaza Saltillo Station, a metro station, is located about 7.7 miles away by car, while Austin Seaport, a seaport, is approximately 8.8 miles from the airport and also most conveniently accessed by car.

Washington to Austin Flights

The cheapest times to fly from Washington to Austin

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Austin are during the month of December. You can find some of the cheapest flights from Washington to Austin with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Washington to Austin

Sunday is one of the best days to book for cheap flights from Washington to Austin: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Washington to Austin

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Austin in 2026. You can also book with separate airlines for your outbound and return journeys, from $70 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Austin flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Austin airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.