Cheap flights from Denver to San Antonio from $46
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to San Antonio departing on 11/1. 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 Denver to San Antonio
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Southwest flights from Denver to San Antonio
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How to get the cheapest flight ticket from Denver 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 Denver during October instead. Flights to San Antonio in October, while not as cheap as those in August, still average around $158.
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 Tuesday when prices can be found for as low as $186. 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 Friday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Friday is $251.
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 afternoon. momondo users have found flights departing from Denver to San Antonio in the afternoon for as low as $175. 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 evening, with an average ticket price of $244. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Denver Intl to San Antonio flight route?
Fly from Denver Intl to San Antonio for the best Denver 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 Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $217 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Denver for as low as $141 on momondo.
What cabin class options are available on Denver Intl to San Antonio flights?
There are 4 cabin classes available to choose from on Denver 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.
What is the cheapest airline that flies from Denver Intl to San Antonio?
Frontier, American Airlines, and United Airlines are the most popular carriers operating from Denver Intl to San Antonio
What airlines fly to San Antonio?
Frontier, United Airlines and Southwest are the top three most popular airlines that fly to San Antonio from Denver according to our data. Frontier is the first choice among our users, with 52% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 4 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 Denver to San Antonio on average per day?
9 flights are operational daily from Denver to San Antonio as of July 2025. The most popular departure time for this route is 5:00PM, with 52% of flights per day taking off in the afternoon.
How many flights depart from Denver to San Antonio on average per week?
69 flights are operational weekly from Denver to San Antonio as of July 2025. The most popular departure day for this route is Thu, with 23% of flights per week taking off on this day.
When to book flights from Denver to San Antonio
Cheap Denver to San Antonio (DEN to SAT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Denver to San Antonio
How far is Denver Intl to San Antonio by plane?
San Antonio is 801.5 mi away from Denver Intl. Typically, this will take 2h 10m by plane in normal conditions.
When did momondo last update prices for flights from Denver Intl Airport to San Antonio Airport?
Prices for flights from Denver Intl Airport to San Antonio Airport were last updated today.
How many operators does momondo search for flights from Denver Intl Airport to San Antonio Airport?
As of July 2025, there are 4 operators available to choose from for flights from Denver Intl Airport to San Antonio Airport.
How old do you have to be to fly from Denver 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 Denver Intl Airport to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The required travel and health documents for your San Antonio Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Antonio Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Denver to San Antonio?
Based on momondo bookings for flights between Denver and San Antonio, the leading plane model is Boeing 737-800, making up 16.16% of the total bookings. Other popular models include Boeing 737 MAX 8 with 14.61%, Boeing 737-700 Passenger/BBJ1 (winglets) with 13.49%, and Boeing 737-900 with 11.73%.
What is the most popular airline from Denver to San Antonio?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Denver to San Antonio is Frontier (58% of total bookings). The next most popular airlines are United Airlines (23%), Southwest (18%), and American Airlines (1%).
Best airlines flying from Denver to San Antonio
Compare and see reviews for airlines that fly from Denver to San Antonio with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $48 | Free Cancellation | Rating 5.9 3,286 reviews | |||
| PriceFrom $137 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $158 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $197 | Free Cancellation | Rating 8.0 4,266 reviews |
Southwest Flights From Denver to San Antonio
Southwest flies from Denver to San Antonio around 20 times per week, with 4,266 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Denver to San Antonio in the last 72 hours was $197 (round-trip), much lower than the average airfare cost of $309 for Southwest flights on this route.
United Airlines Flights From Denver to San Antonio
Across 8,861 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Denver to San Antonio about 17 times each week, with ticket deals ranging from $137 to $311. Price data is based on momondo searches in the last 72 hours.
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 Denver to San Antonio?
Finding the right flight to San Antonio from Denver 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 Denver to San Antonio with flexible booking policies on momondo?
All flight searches from Denver to San Antonio on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Denver to San Antonio?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Antonio from Denver.
I’m not ready to book a flight from Denver to San Antonio right now. Can momondo alert me if prices change?
If you are simply researching potential flights to San Antonio, momondo offers a useful price alert feature which will track prices for flights to San Antonio from Denver and alert you when they change.