Cheap flights from Washington, D.C. Dulles Intl Airport to San Antonio from $58
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to San Antonio departing on 10/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Washington, D.C. Dulles Intl Airport to San Antonio
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Southwest flights from Washington, D.C. Dulles Intl Airport to San Antonio
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to San Antonio
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Antonio?
If you aren’t able to travel during the month of August, then book flights to San Antonio from Washington, D.C. Dulles Intl Airport during January instead. Flights to San Antonio in January, while not as cheap as those in August, still average around $345.
What is the cheapest day to depart on your flight to San Antonio?
The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $371. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $493.
What is the cheapest time of day to depart on your flight to San Antonio?
According to our data, the cheapest time of day to fly to San Antonio is in the evening. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to San Antonio in the evening for as low as $319. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the afternoon, with an average ticket price of $425. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Washington, D.C. Dulles Intl to San Antonio flight route?
Fly from Washington, D.C. Dulles Intl to San Antonio for the best Washington, D.C. Dulles Intl - San Antonio flight prices
How far in advance should I book a flight to San Antonio?
You are more likely to see cheaper flights to San Antonio from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $405 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Washington, D.C. Dulles Intl Airport for as low as $329 on momondo.
What cabin class options are available on Washington, D.C. Dulles Intl to San Antonio flights?
There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Washington, D.C. Dulles Intl Airport to San Antonio flights?
No. A direct flight is the cheapest option for a flight between Washington, D.C. Dulles Intl Airport to San Antonio.
How have Washington, D.C. Dulles Intl Airport to San Antonio flight prices changed over time?
As of July 2025, prices for Washington, D.C. Dulles Intl Airport to San Antonio flights are approximately 10% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. Dulles Intl to San Antonio?
Frontier, United Airlines, and Delta are the most popular carriers operating from Washington, D.C. Dulles Intl to San Antonio
What airlines fly to San Antonio?
United Airlines, Delta and American Airlines are the top three most popular airlines that fly to San Antonio from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 80% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 6 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.
How many flights depart from Washington, D.C. Dulles Intl Airport to San Antonio on average per day?
As of July 2025, 5 flights take off from Washington, D.C. Dulles Intl Airport and land in San Antonio each day. The most common flight departure time for this route is 5:00PM, with 66% of daily flights taking off in the afternoon.
How many flights depart from Washington, D.C. Dulles Intl Airport to San Antonio on average per week?
As of July 2025, there are 38 flights per week flying from Washington, D.C. Dulles Intl Airport to San Antonio. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.
When to book flights from Washington, D.C. Dulles Intl Airport to San Antonio
Cheap Washington, D.C. Dulles Intl Airport to San Antonio (IAD to SAT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to San Antonio
How far is Washington, D.C. Dulles Intl to San Antonio by plane?
The distance between Washington, D.C. Dulles Intl and San Antonio is about 1365.3 mi. 3h 29m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to San Antonio Airport?
Prices for flights from Washington, D.C. Dulles Intl Airport to San Antonio Airport are updated daily.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to San Antonio Airport?
There are 4 operators available for flights from Washington, D.C. Dulles Intl Airport to San Antonio Airport as of July 2025.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to San Antonio Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Washington, D.C. Dulles Intl Airport to San Antonio?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. Dulles Intl Airport to San Antonio is Boeing 737-900, representing 26.67% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 13.64%, Embraer 175 (Enhanced Winglets) at 12.56%, and Airbus A321-100/200 at 12.17%.
What is the most popular airline from Washington, D.C. Dulles Intl Airport to San Antonio?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to San Antonio is United Airlines (78% of total bookings). The next most popular airlines are Delta (14%), American Airlines (6%), and Southwest (1%).
Best airlines flying from Washington, D.C. Dulles Intl Airport to San Antonio
Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San Antonio with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $196 | Free Cancellation | Rating 8.0 4,270 reviews | |||
| PriceFrom $218 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $242 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $249 | Free Cancellation | Rating 7.4 8,861 reviews |
United Airlines Flights From Washington, D.C. Dulles Intl Airport to San Antonio
United Airlines flies from Washington, D.C. Dulles Intl Airport to San Antonio around 12 times per week, with 8,861 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Washington, D.C. Dulles Intl Airport to San Antonio in the last 72 hours was $249 (round-trip), much lower than the average airfare cost of $423 for United Airlines flights on this route.
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Why should I use momondo to find a flight deal from Washington, D.C. to San Antonio?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Antonio from Washington, D.C..
Can I find flights from Washington, D.C. to San Antonio with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Washington, D.C. to San Antonio flights to just show those with flexible booking policies.
How can momondo help me find flights from Washington, D.C. to San Antonio?
Once all potential Washington, D.C. to San Antonio flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Washington, D.C. to San Antonio right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Washington, D.C. to San Antonio flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.