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Flights from San Antonio to Denver

Find cheap airlines flights from San Antonio to Denver

You can choose from 1 airlines that fly from San Antonio to Denver, including Frontier Airlines, Frontier Airlines has lowest fares on this route.
Frontier Airlines logo Frontier Airlines
Airlines are determined based on actual purchased flight tickets from San Antonio to Denver according to previous 12 months data from Trip.com.

Book direct flights from San Antonio to Denver: One way flights from $29, round trip flights from $57. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Wed, May 6 | Frontier Airlines
        DEN 3:42 PM
        2h 17m
        Nonstop
        SAT 6:59 PM
        Denver - San Antonio | Tue, May 12 | Frontier Airlines
        $57 $93
        39% off
        39% off
        $93 $57
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Tue, May 12 | Frontier Airlines
        DEN 3:42 PM
        2h 17m
        Nonstop
        SAT 6:59 PM
        Denver - San Antonio | Wed, May 20 | Frontier Airlines
        $59 $93
        37% off
        37% off
        $93 $59
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Wed, May 13 | Frontier Airlines
        DEN 3:42 PM
        2h 17m
        Nonstop
        SAT 6:59 PM
        Denver - San Antonio | Wed, May 20 | Frontier Airlines
        $60 $93
        35% off
        35% off
        $93 $60
      • SAT 4:04 PM
        2h 26m
        Nonstop
        DEN 5:30 PM
        San Antonio - Denver | Sat, Apr 25 | Frontier Airlines
        DEN 10:57 AM
        2h 18m
        Nonstop
        SAT 2:15 PM
        Denver - San Antonio | Mon, Apr 27 | Frontier Airlines
        $63
        32% off
        $93 $63
      • SAT 4:04 PM
        2h 26m
        Nonstop
        DEN 5:30 PM
        San Antonio - Denver | Sat, May 2 | Frontier Airlines
        DEN 10:57 AM
        2h 18m
        Nonstop
        SAT 2:15 PM
        Denver - San Antonio | Mon, May 4 | Frontier Airlines
        $64
        31% off
        $93 $64
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Mon, May 11 | Frontier Airlines
        DEN 3:42 PM
        2h 17m
        Nonstop
        SAT 6:59 PM
        Denver - San Antonio | Tue, May 19 | Frontier Airlines
        $64
        31% off
        $93 $64
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Wed, Jun 3 | Frontier Airlines
        DEN 3:42 PM
        2h 17m
        Nonstop
        SAT 6:59 PM
        Denver - San Antonio | Mon, Jun 8 | Frontier Airlines
        $64
        31% off
        $93 $64
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Tue, Jun 2 | Frontier Airlines
        DEN 3:42 PM
        2h 17m
        Nonstop
        SAT 6:59 PM
        Denver - San Antonio | Sat, Jun 6 | Frontier Airlines
        $70
        25% off
        $93 $70
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Thu, May 7 | Frontier Airlines
        DEN 3:42 PM
        2h 17m
        Nonstop
        SAT 6:59 PM
        Denver - San Antonio | Mon, May 11 | Frontier Airlines
        $70
        25% off
        $93 $70
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Sat, May 9 | Frontier Airlines
        DEN 3:42 PM
        2h 17m
        Nonstop
        SAT 6:59 PM
        Denver - San Antonio | Mon, May 11 | Frontier Airlines
        $70
        25% off
        $93 $70
      • SAT 1:00 PM
        17h 25m
        1 stop
        DEN Invalid Date
        San Antonio - Denver | Fri, Apr 17 | Normal Airline
        DEN 3:00 PM
        6h
        Nonstop
        SAT 4:00 PM
        Denver - San Antonio | Sun, Apr 19 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Wed, May 6 | Frontier Airlines
        $29 $169
        83% off
        83% off
        $169 $29
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Tue, May 12 | Frontier Airlines
        $30 $169
        82% off
        82% off
        $169 $30
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Wed, May 27 | Frontier Airlines
        $30 $169
        82% off
        82% off
        $169 $30
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Wed, Jun 3 | Frontier Airlines
        $31
        82% off
        $169 $31
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Wed, May 20 | Frontier Airlines
        $31
        82% off
        $169 $31
      • SAT 3:14 PM
        2h 26m
        Nonstop
        DEN 4:40 PM
        San Antonio - Denver | Tue, May 5 | Frontier Airlines
        $36
        79% off
        $169 $36
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Sat, May 9 | Frontier Airlines
        $36
        79% off
        $169 $36
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Mon, May 11 | Frontier Airlines
        $36
        79% off
        $169 $36
      • SAT 7:54 PM
        2h 29m
        Nonstop
        DEN 9:23 PM
        San Antonio - Denver | Wed, May 13 | Frontier Airlines
        $52
        69% off
        $169 $52
      • SAT 4:04 PM
        2h 26m
        Nonstop
        DEN 5:30 PM
        San Antonio - Denver | Tue, Apr 21 | Frontier Airlines
        $128
        24% off
        $169 $128
      • SAT 1:00 PM
        17h 25m
        1 stop
        DEN Invalid Date
        San Antonio - Denver | Fri, Apr 17 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from San Antonio to Denver are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | San Antonio to Denver

The distance between San Antonio and Denver is approximately 1,280.06 km. It takes around 3 hours 12 minutes on average to fly from San Antonio to Denver. Based on Trip.com's data travel demand peaks in July. The off-season for travel is November.

Cheapest one-way flight price$29
Cheapest round-trip ticket price$57
Off-season for travelNovember
Peak season for travelJuly
Flight distance1,280.06 km
Average flight time3 hours 12 minutes
Popular airlineFrontier Airlines
Flight statistics for the San Antonio–Denver route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com price insights on flights from San Antonio to Denver

Which month has the cheapest one-way flights from San Antonio to Denver?

Based on Trip.com’s data, the cheapest month for flights from San Antonio to Denver is January, with an average price of $83; while the month with the highest flight price is usually September, with an average price of up to $386.

$386
$235
$83
0
    Cheapest
  • $153
    Apr
  • $110
    May
  • $200
    Jun
  • $148
    Jul
  • $145
    Aug
  • $386
    Sep
  • $121
    Oct
  • $200
    Nov
  • $87
    Dec
  • $83
    Jan
  • $136
    Feb
  • $94
    Mar

Frequently Asked Questions

  • What are the cheapest flights from San Antonio to Denver (SAT-DEN)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $29 on Cheapest nonstop routes (e.g. SAT to DEN on Wed, May 6), while Frontier Airlines offers Cheapest nonstop round-trips from $57 departing on Wed, May 6 and returning on Tue, May 12.
  • At the moment, you can catch a nonstop flight from San Antonio to Denver with the following airlines, including: Frontier Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 3 hours 12 minutes to fly from San Antonio (SAT) to Denver (DEN).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Antonio to Denver is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 6 flight per week flying from San Antonio to Denver. You can check the weekly schedule for popular airlines on this route below: Frontier Airlines: S/M/T/W/T/F/S -- F92355 (06:58)
  • To find best deals on flights from San Antonio to Denver, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, May 6, with one-way flights priced at just $29.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Denver travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from San Antonio to Denver is November, when demand for travel is lower.
  • After crunching the numbers on our April flight calendar, it's currently cheapest to fly from San Antonio to Denver on April 25, 2026 with Frontier Airlines, with prices starting at $63.
  • You can land at any one of the following hubs in Denver, with San Antonio International Airport to Denver International Airport (SAT-DEN) is by far the most common option on this route: Denver International Airport (DEN) Rocky Mountain Metropolitan Airport (BJC).
  • The time difference between Denver and San Antonio is 1h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.