Cheap Flights from Denver International to San Antonio International

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Flight deals from Denver International to San Antonio International

Looking for a cheap last-minute deal or the best return flight from Denver International to San Antonio International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Denver International to San Antonio International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to San Antonio International flights are currently cheapest in May.

Direct flights from Denver International to San Antonio International

Denver International to San Antonio International: Alternative routes

Compare routes from Denver International to San Antonio below. You may find an airport to fly into that's cheaper, faster, or easier than San Antonio International.

Denver to San Antonio: Flight information

The things to know before you go.
Cheapest flight foundRs9,191
Cheapest month to flyMay
Average flight time2 hrs, 14 mins
Most popular airlineSouthwest Airlines
Average flights per week92

Finding cheap flights from Denver International to San Antonio International: Frequently asked questions

The best price we found for a return flight from Denver International to San Antonio International is Rs24,303. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 14 minutes is the average flight time from Denver International to San Antonio International.
Southwest Airlines, United and Air Canada fly direct from Denver International to San Antonio International.
As of February 2026, there are 92 flights per week flying from Denver International to San Antonio International.
The cheapest month to fly from Denver International to San Antonio International is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to San Antonio International Airport on Tuesday, 5 May 2026.
Yes – the average flight time is 2 hours and 14 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Antonio International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Antonio is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to San Antonio International.

Flying from Denver International Airport (DEN) to San Antonio International Airport (SAT): what you need to know

  • Around 2 hours 10 minutes is how long you can expect to be travelling on a direct flight from Denver International Airport to San Antonio International Airport.

  • The timezone in San Antonio is UTC-5, which is one hour ahead of Denver.

  • Each week, there are 66 Denver International Airport to San Antonio International Airport flights. If you want to be on board early, go for the 05:01 Frontier Airlines flight. If you'd rather make the most of your day before you fly, the last flight is at 22:20 with Southwest Airlines.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Make sure you're at the airport on time to board your DEN to SAT flight.

  • During popular months like July, it's a good idea to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead of an international flight whenever you're flying during peak periods in general.

  • A variety of airlines offer direct flights from Denver International Airport to San Antonio International Airport, so getting to San Antonio (and then discovering more of United States!) is easy. Popular carriers that fly nonstop include:

  • The airline with the highest booking volume on this route is Frontier Airlines.

  • United Airlines ranks as the top on-time carrier for DEN to SAT flights, with 85.19% of services landing on schedule.

  • If you'd like to break up your flight, just uncheck 'Direct flights only' when searching for your ticket from Denver International Airport to San Antonio International Airport. These are the most popular stopovers between DEN and SAT:

    • Dallas Love Field Airport

    • Colorado Springs Municipal Airport

    • Dallas/Fort Worth International Airport

How to find the cheapest flights from Denver International Airport (DEN) to San Antonio International Airport (SAT)

  • Currently, Rs9,178 is the cheapest price we've seen for a one-way Denver International Airport to San Antonio International Airport flight. The best price for a return plane ticket is Rs24,303. Remember that fares could change due to demand when booking.

  • To pick up cheap tickets from DEN to SAT, book your journey six months before your departure date.

  • Organise your trip for May. That's the cheapest month for flights from Denver International Airport to San Antonio International Airport. If your travel dates are flexible, try out the 'Whole month' tool to see the lowest price across every month.

  • Picking up cheap flights from DEN to SAT is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you when a new deal comes up.

  • Tailor your trip using filters. Pick your preferred departure and arrival times, total journey duration and airlines. You can also sort the results by 'Best,' 'Cheapest' or 'Fastest' flights from Denver International Airport to San Antonio International Airport.

Handy information about Denver International Airport (DEN)

  • DEN is located at 8500 Pena Boulevard.

  • 80.23% of flights departing from Denver International Airport touch down at their destination as planned. With its solid on-time performance, you're unlikely to be delayed when setting off from DEN.

  • Central Denver to Denver International Airport is around 40 kilometres. Depending on traffic, it'll take you about 35 minutes to get there if you're driving, catching a cab or ride-sharing.

  • The trip on public transport typically takes 1 hour 30 minutes.

  • Booking a hotel room for the night can take the hassle out of getting to the airport on time. If you need somewhere to stay before your flight from Denver International Airport to San Antonio International Airport, take a look at Baymont by Wyndham Denver International Airport. It's a short ride from DEN.

Arriving at San Antonio International Airport (SAT)

Getting from San Antonio International Airport (SAT) to central San Antonio

  • The address for SAT is 9800 Airport Boulevard.

  • San Antonio International Airport is roughly 19 kilometres from central San Antonio. The drive time takes about 20 minutes.

  • Travelling on public transport typically takes 1 hour 30 minutes.

When to fly to San Antonio International Airport (SAT)

  • It's time to work out your trip dates for your flight from Denver International Airport to San Antonio International Airport. July is the most popular month to visit San Antonio. If you're after a quieter vibe, go in April.

  • Lock in your flight from Denver International Airport to San Antonio International Airport for August if you want to go to San Antonio during its warmest month. Expect temperatures of between 23ºC and 40ºC.

  • Look for cheap tickets from DEN to SAT in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 3ºC and 20ºC on average.

Explore more of United States

  • Houston is just one of the many places in United States waiting to be explored after you've seen San Antonio. Around 306 kilometres away to the east, well-known attractions include The Houston Museum of Natural Science, The Museum of Fine Arts, Houston, Beck Building and Hermann Park.

  • If you want to check out another great destination in United States, consider Dallas, about 402 kilometres north-east of San Antonio. Dallas Arboretum and Botanical Gardens, Perot Museum of Nature and Science and Dallas Museum of Art are key highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.