Cheap flights from Washington, D.C. to San Antonio from $50
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. to San Antonio departing on 10/20. 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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Frontier flights from Washington, D.C. to San Antonio
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American Airlines flights from Washington, D.C. to San Antonio
Our best American Airlines deals on Washington, D.C. to San Antonio flight tickets
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How to get the cheapest flight ticket from Washington, D.C. 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 typical price of a round-trip flight between Washington, D.C. and San Antonio?
What is the cheapest month to fly to San Antonio?
If you aren’t able to travel during the month of July, then book flights to San Antonio from Washington, D.C. during May instead. Flights to San Antonio in May, while not as cheap as those in July, still average around $333.
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. 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. to San Antonio flight route?
Fly from Baltimore/Washington to San Antonio for the best Washington, D.C. - 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. 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. for as low as $329 on momondo.
What cabin class options are available on Washington, D.C. to San Antonio flights?
There are 4 cabin classes available to choose from on Washington, D.C. 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. to San Antonio flights?
No. A direct flight is the cheapest option for a flight between Washington, D.C. to San Antonio.
How have Washington, D.C. to San Antonio flight prices changed over time?
As of July 2025, prices for Washington, D.C. to San Antonio flights are approximately 137% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. to San Antonio?
Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from Washington, D.C. to San Antonio
What airlines fly to San Antonio?
United Airlines, Southwest and American Airlines are the top three most popular airlines that fly to San Antonio from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 7 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. to San Antonio on average per day?
As of July 2025, 9 flights take off from Washington, D.C. and land in San Antonio each day. The most common flight departure time for this route is 5:00PM, with 44% of daily flights taking off in the afternoon.
How many flights depart from Washington, D.C. to San Antonio on average per week?
As of July 2025, there are 65 flights per week flying from Washington, D.C. to San Antonio. The most common day of the week flights depart is Thu, with 23% of flights taking off on this day.
When to book flights from Washington, D.C. to San Antonio
Cheap Washington, D.C. to San Antonio (WAS to SAT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to San Antonio
How far is Washington, D.C. to San Antonio by plane?
San Antonio is 1384.8 mi away from Washington, D.C.. A reasonable flight in good conditions will take 3h 29m.
When did momondo last update prices for flights from Washington, D.C. to San Antonio Airport?
Prices for flights from Washington, D.C. to San Antonio Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. to San Antonio Airport?
The number of operators available for flights from Washington, D.C. to San Antonio Airport is 6 as of July 2025.
How old do you have to be to fly from Washington, D.C. to San Antonio Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The necessary travel and health documents for your San Antonio Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. to San Antonio?
Based on momondo bookings for flights between Washington, D.C. and San Antonio, the leading plane model is Boeing 737-900, making up 22.04% of the total bookings. Other popular models include Boeing 737 MAX 8 with 15.49%, Airbus A321-100/200 with 13.97%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 8.90%.
What is the most popular airline from Washington, D.C. to San Antonio?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to San Antonio is United Airlines (57% of total bookings). The next most popular airlines are American Airlines (21%), Southwest (10%), and Delta (7%).
Best airlines flying from Washington, D.C. to San Antonio
Compare and see reviews for airlines that fly from Washington, D.C. to San Antonio with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $121 | Free Cancellation | Rating 6.3 8,086 reviews | |||
| PriceFrom $128 | Free Cancellation | Rating 5.9 3,286 reviews | |||
| PriceFrom $166 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $196 | Free Cancellation | Rating 8.0 4,266 reviews | |||
| PriceFrom $238 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 7.4 8,861 reviews |
Southwest Flights From Washington, D.C. to San Antonio
Southwest is one of the most popular airlines flying from Washington, D.C. to San Antonio, operating 12 flights/week on average for this route. A good Southwest flight deal for Washington, D.C. to San Antonio starts from $196 round-trip, up to an average price of $426. Our users have rated Southwest at 8.0/10.
United Airlines Flights From Washington, D.C. to San Antonio
The best United Airlines deal for Washington, D.C. to San Antonio flight tickets found on momondo in the last 72 hours was $248, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $403 round-trip. United Airlines operates 12 flights out of Washington, D.C. into San Antonio in an average week, so prices vary by time and availability. 8,861 United Airlines reviews by users on momondo have scored the airline at 7.4/10.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to San Antonio?
Finding the right flight to San Antonio from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Antonio quick and easy, saving you time and money.
Can I find flights from Washington, D.C. to San Antonio with flexible booking policies on momondo?
Yes. All flights to San Antonio from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.
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?
If you are not ready to book a flight from Washington, D.C. to San Antonio now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Antonio and let you know when they change.