Cheap flights from San Antonio to Denver

Flights overview

Useful information for finding cheap flights from San Antonio to Denver and booking your next trip
Cheapest round-trip flights $168
Frontier Nonstop 3 hr Thu, Jun 4 — Mon, Jun 8
The cheapest round-trip flight from San Antonio to Denver is currently $168
Cheapest one-way flight $40
Frontier Nonstop 3 hr Wed, May 20
The cheapest one-way flight from San Antonio to Denver is currently $40
Last-minute weekend getaway $256
Frontier 1 stop 14 hr Thu, May 7 — Mon, May 11
The cheapest last-minute weekend getaway from San Antonio to Denver is currently $256
Cheapest business class flights $396
Frontier Nonstop 3 hr Thu, Jun 4 — Mon, Jun 8
The cheapest business class round-trip flight from San Antonio to Denver is currently $396
Fastest flight 2 hr 10 min The fastest nonstop flight from San Antonio to Denver takes 2 hr 10 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from San Antonio to Denver is typically January. The most expensive month to fly is typically July.
January
Cheapest
Typical prices: $100–265
July
Most expensive
Typical prices: $175–340

Popular airlines from San Antonio to Denver

  • Southwest
    Nonstop
    from $309
    Typical price: $205–450
    30 weekly nonstop flights
    SAT - DEN Every day
    858 weekly connecting flights
    SAT - DEN Every day
  • United
    Nonstop
    from $309
    Typical price: $215–475
    21 weekly nonstop flights
    SAT - DEN Every day
    344 weekly connecting flights
    SAT - DEN Every day
  • American
    from $422
    Typical price: $235–530
    435 weekly connecting flights
    SAT - DEN Every day
  • Frontier
    Nonstop
    from $168
    Typical price: $110–260
    7 weekly nonstop flights
    SAT - DEN Every day
    14 weekly connecting flights
    SAT - DEN Every day
  • Delta
    from $329
    Typical price: $235–650
    213 weekly connecting flights
    SAT - DEN Every day
  • Alaska
    from $841
    Typical price: $470–1,050
    21 weekly connecting flights
    SAT - DEN Every day

Popular airports near San Antonio

  • San Antonio International Airport (SAT)
    San Antonio United States 19 min 7 mi
  • Austin-Bergstrom International Airport (AUS)
    Austin United States 1 hr 21 min 72 mi
  • George Bush Intercontinental Airport (IAH)
    Houston United States 3 hr 9 min 193 mi
  • William P. Hobby Airport (HOU)
    Houston United States 3 hr 14 min 193 mi

Popular airports near Denver

  • Denver International Airport (DEN)
    Denver United States 38 min 19 mi
  • Colorado Springs Airport (COS)
    Colorado Springs United States 1 hr 27 min 66 mi
  • Centennial Airport (APA)
    Denver United States 27 min 14 mi
  • Eagle County Regional Airport (EGE)
    Vail United States 2 hr 19 min 103 mi

Frequently asked questions about flying from San Antonio to Denver

The cheapest flights from San Antonio to Denver are usually in January. Typical ticket prices in January range from $100 to $265.
The cheapest round-trip flight from San Antonio to Denver recently found on Google Flights was with Frontier from $168. The cheapest one-way flight was with Frontier from $40.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from San Antonio to Denver is $309, flying from Jun 4 to Jun 8.
  • The cheapest United flight from San Antonio to Denver is $309, flying from May 28 to Jun 1.
  • The cheapest American flight from San Antonio to Denver is $422, flying from May 16 to May 18.
  • The cheapest Frontier flight from San Antonio to Denver is $168, flying from Jun 4 to Jun 8.
  • The cheapest Delta flight from San Antonio to Denver is $329, flying from Jun 4 to Jun 8.
  • The cheapest Alaska flight from San Antonio to Denver is $841, flying from Jul 30 to Aug 3.
The cheapest round-trip flight from San Antonio to Denver starts at $168 from Thu, Jun 4 to Mon, Jun 8. The cheapest one-way flight starts at $40 and departs on Wed, May 20.
2 hr 10 min is the shortest flight time from San Antonio to Denver.
Denver’s mild summer months (Jun–Aug) are a popular time for visitors exploring the city and nearby national parks. The ski season runs through winter (Nov–Mar). Major events include the National Western Stock Show & Rodeo (Jan) and A Taste of Colorado (Sep) food and arts festival.
It's easy to use Google Flights to find the cheapest days to fly from San Antonio to Denver.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from San Antonio to Denver really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from San Antonio to Denver.

In terms of nonstop flights, Southwest is the most popular. Southwest offers 30 nonstop flights and 858 connecting flights per week. Southwest flies from San Antonio International Airport (SAT) to Denver International Airport (DEN) .

Other popular airlines flying from San Antonio to Denver are:
  • United offers 21 nonstop flights and 344 connecting flights per week. United flies from San Antonio International Airport (SAT) to Denver International Airport (DEN) .
  • American offers 435 connecting flights per week. American flies from San Antonio International Airport (SAT) to Denver International Airport (DEN) .
  • Frontier offers 7 nonstop flights and 14 connecting flights per week. Frontier flies from San Antonio International Airport (SAT) to Denver International Airport (DEN) .
  • Delta offers 213 connecting flights per week. Delta flies from San Antonio International Airport (SAT) to Denver International Airport (DEN) .
  • Alaska offers 21 connecting flights per week. Alaska flies from San Antonio International Airport (SAT) to Denver International Airport (DEN) .
The number of connecting flights refers to distinct flights with at least one stop between San Antonio and Denver.
The cheapest round-trip flight from San Antonio to Denver recently found on Google Flights was with Frontier from $168. The cheapest one-way flight was with Frontier from $40.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from San Antonio to Denver is $309, flying from Jun 4 to Jun 8.
  • The cheapest United flight from San Antonio to Denver is $309, flying from May 28 to Jun 1.
  • The cheapest American flight from San Antonio to Denver is $422, flying from May 16 to May 18.
  • The cheapest Frontier flight from San Antonio to Denver is $168, flying from Jun 4 to Jun 8.
  • The cheapest Delta flight from San Antonio to Denver is $329, flying from Jun 4 to Jun 8.
  • The cheapest Alaska flight from San Antonio to Denver is $841, flying from Jul 30 to Aug 3.
Southwest, United and Frontier fly direct from San Antonio to Denver.
  • There are 30 Southwest direct flights from San Antonio to Denver per week. Flights are available every day.
  • There are 21 United direct flights from San Antonio to Denver per week. Flights are available every day.
  • There are 7 Frontier direct flights from San Antonio to Denver per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between San Antonio and Denver at price $256 is offered by Frontier from Thu, May 7 to Mon, May 11.
Southwest, United and Frontier fly direct from San Antonio to Denver.
  • There are 30 Southwest direct flights from San Antonio to Denver per week. Flights are available every day.
  • There are 21 United direct flights from San Antonio to Denver per week. Flights are available every day.
  • There are 7 Frontier direct flights from San Antonio to Denver per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are direct flights from San Antonio to Denver on a daily basis.
The cheapest direct (nonstop) round-trip flights between San Antonio and Denver start at $168 from Thu, Jun 4 to Mon, Jun 8 with Frontier.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from San Antonio to Denver, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between San Antonio and Denver start at $396 from Thu, Jun 4 to Mon, Jun 8 with Frontier.
The cheapest economy class round-trip flights between San Antonio and Denver start at $168 from Thu, Jun 4 to Mon, Jun 8.
To book business class trips from San Antonio to Denver, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between San Antonio and Denver starts at $256 from Thu, May 7 to Mon, May 11 with Frontier.
The cheapest last-minute deal between San Antonio and Denver at price $256 is offered by Frontier from Thu, May 7 to Mon, May 11.
To find last-minute flight deals from San Antonio to Denver, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

Search more flights

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