Cheap flights from San Antonio to Denver from $47
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Denver 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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Southwest flights from San Antonio to Denver
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Frontier flights from San Antonio to Denver
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How to get the cheapest flight ticket from San Antonio to Denver
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 Denver?
The cheapest month to fly to Denver from San Antonio is in August. Flight prices, which tend to average around $133, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in August, then you should wait until September to fly from San Antonio, when ticket prices are also cheap, with an average price of $148.
What is the cheapest day to depart on your flight to Denver?
The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $300. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Monday, with ticket prices averaging around $432.
What is the cheapest time of day to depart on your flight to Denver?
The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $191. Flights at noon are often more expensive with an average ticket price of $400.
What is the cheapest San Antonio to Denver Intl flight route?
Fly from San Antonio to Denver Intl for the best San Antonio - Denver Intl flight prices
How far in advance should I book a flight to Denver?
You are more likely to see cheaper flights to Denver from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $180 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from San Antonio for as low as $128 on momondo.
What cabin class options are available on San Antonio to Denver Intl flights?
There are 4 cabin classes available to choose from on San Antonio to Denver Intl 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 San Antonio to Denver Intl?
Frontier, American Airlines, and United Airlines are the most popular carriers operating from San Antonio to Denver Intl
What airlines fly to Denver?
Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Denver from San Antonio according to our data. Frontier is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 5 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Antonio to Denver on average per day?
As of July 2025, 11 flights take off from San Antonio and land in Denver each day. The most common flight departure time for this route is 1:00PM, with 46% of daily flights taking off in the afternoon.
How many flights depart from San Antonio to Denver on average per week?
78 flights are operational weekly from San Antonio to Denver as of July 2025. The most popular departure day for this route is Mon, with 21% of flights per week taking off on this day.
When to book flights from San Antonio to Denver
Cheap San Antonio to Denver (SAT to DEN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Antonio to Denver
How far is San Antonio to Denver Intl by plane?
The distance between San Antonio and Denver Intl is about 801.5 mi. A reasonable flight in good conditions will take 2h 10m.
When did momondo last update prices for flights from San Antonio Airport to Denver Intl Airport?
Prices for flights from San Antonio Airport to Denver Intl Airport are updated daily.
How many operators does momondo search for flights from San Antonio Airport to Denver Intl Airport?
The number of operators available for flights from San Antonio Airport to Denver Intl Airport is 5 as of July 2025.
How old do you have to be to fly from San Antonio Airport to Denver Intl 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 San Antonio Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The required travel and health documents for your Denver Intl 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 Denver Intl 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 San Antonio to Denver?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Antonio to Denver is Boeing 737-800 (15.25% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (12.09%), Airbus A320-100/200 (11.66%), and Boeing 737-700 Passenger/BBJ1 (winglets) (11.59%).
What is the most popular airline from San Antonio to Denver?
Based on momondo bookings for flights between San Antonio and Denver, the leading airline is Frontier, making up 59% of the total bookings. Other popular airlines include United Airlines with 26%, Southwest with 14%, and American Airlines with 1%.
Best airlines flying from San Antonio to Denver
Compare and see reviews for airlines that fly from San Antonio to Denver with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $39 | Free Cancellation | Rating 5.9 3,290 reviews | |||
| PriceFrom $118 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $148 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $158 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $178 | Free Cancellation | Rating 8.0 4,272 reviews |
Southwest Flights From San Antonio to Denver
Across 18 Southwest flights from San Antonio to Denver this week, the average price was $308, with the best Southwest deals starting from $178 round-trip. 4,272 users have rated Southwest on momondo, with an average score of 8.0/10.
United Airlines Flights From San Antonio to Denver
$148 is the best United Airlines flight deal from San Antonio to Denver found on momondo over the last 72 hours. The average United Airlines ticket price found was closer to $310, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 8,861 user reviews) flies into Denver from San Antonio 27 times in an average week so prices can vary.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from San Antonio to Denver?
Finding the right flight to Denver from San Antonio 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 Denver quick and easy, saving you time and money.
Can I find flights from San Antonio to Denver with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for San Antonio to Denver flights to just show those with flexible booking policies.
How can momondo help me find flights from San Antonio to Denver?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Antonio to Denver.
I’m not ready to book a flight from San Antonio to Denver right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of San Antonio to Denver flights. All you need is a valid email address and we will do the rest; it is that quick and easy.