Cheap flights from Denver to San Antonio

Denver
DEN
San Antonio
SAT

Flight deals from Denver to San Antonio

Below you can see the best deals on flights Denver — San Antonio for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 3 October, from $58.

Top 10 cheap flights from Denver to San Antonio

F9
$ 72

Denver — San Antonio

16:13—19:25
11 Sep 2026
2 h 12 m
Direct flight
F9
$ 85

Denver — San Antonio

16:13—19:25
9 Sep 2026
2 h 12 m
Direct flight
F9
$ 85

Denver — San Antonio

16:13—19:25
12 Sep 2026
2 h 12 m
Direct flight
F9
F9
$ 91

Denver — San Antonio

22:50—11:44
9 Sep 2026
35 h 54 m
1 stop
F9
$ 92

Denver — San Antonio

16:13—19:25
10 Sep 2026
2 h 12 m
Direct flight
F9
$ 98

Denver — San Antonio

16:13—19:31
3 Sep 2026
2 h 18 m
Direct flight
F9
$ 98

Denver — San Antonio

16:13—19:31
1 Sep 2026
2 h 18 m
Direct flight
F9
$ 98

Denver — San Antonio

16:13—19:31
31 Aug 2026
2 h 18 m
Direct flight
F9
$ 98

Denver — San Antonio

16:13—19:25
14 Sep 2026
2 h 12 m
Direct flight
F9
$ 98

Denver — San Antonio

16:13—19:31
2 Sep 2026
2 h 18 m
Direct flight

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Denver — San Antonio flight

Looking for cheap flights from Denver to San Antonio? Compare fares from different airlines, check the flight schedule and travel time — and book your Denver — San Antonio ticket online at the best price.

The route has direct flights — around 71 flights per week, flights are operated by United Airlines, Frontier Airlines, Southwest Airlines, Volaris, a nonstop flight takes about 2 h 8 min, the distance between the cities is around 1,289 km.

Planning your trip? You may find our San Antonio travel guide, how to get from the airport into town and San Antonio weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $58Min. price
OctoberCheapest
MarchPeak season
YesDirect flights
1,289 kmDistance
2 h 8 minTravel time
4Airlines
71 / wkFlights

Flight schedule from Denver to San Antonio

The table shows direct flights from Denver to San Antonio on the selected date. The flight takes approximately 2 h 8 min. Regular flights are operated by United Airlines, Frontier Airlines, Southwest Airlines and Volaris. Departures from Denver International Airport and Centennial Airport airports, arrivals at San Antonio International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 15 Aug 2026

Flight ticket prices by day: Denver — San Antonio

Below is a calendar of the lowest flight ticket prices for Denver — San Antonio by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $58 in October, and the most expensive are around $235 in March. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Denver to San Antonio by month. Tickets are usually cheapest in November (around $99) and priciest in June (about $149) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$112lowMay$131mediumSep$106low
Feb$118lowJun$149highOct$149high
Mar$143highJul$143mediumNov$99low
Apr$124mediumAug$137mediumDec$131medium

Some values are estimated based on seasonality.

When to fly

Weather in San Antonio: it is warmest in August (up to 36 °C on average) and coolest in January (around 18 °C). The driest month is July.

Tickets are usually cheapest in October and most expensive in March. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · San Antonio

Dry and wet days · San Antonio

Wind speed and direction · San Antonio

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How to get the best deal on a Denver — San Antonio ticket

  • Book ahead: fares for Denver — San Antonio are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Denver is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to San Antonio is usually October — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Denver — San Antonio route are operated by 4 airlines; United Airlines runs the most flights (around 69% of all flights). Compare carriers, flight shares and schedules below.

  • United AirlinesUA
    16x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight DEN → SAT16x/week
      Duration
      2h 9m
      Days
      MTWTFSS
    69.0%Open →
  • Frontier AirlinesF9
    5x/week
    WebsiteFleet: 15329M pax/year
    • Direct flight DEN → SAT5x/week
      Duration
      2h 17m
      Days
      MTWTFSS
    19.7%Open →
  • Southwest AirlinesWN
    2x/week
    WebsiteFleet: 817140M pax/year
    • Direct flight DEN → SAT2x/week
      Duration
      2h 29m
      Days
      MTWTFSS
    7.0%Open →
  • VolarisY4
    1x/week
    WebsiteFleet: 15233.4M pax/year
    • Direct flight DEN → SAT1x/week
    4.2%Open →

Cities and airports on the Denver — San Antonio route

Flights Denver — San Antonio depart from Denver International Airport and Centennial Airport and arrive at San Antonio International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Denver

DEN
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

San Antonio

SAT
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Denver — San Antonio flight

How long is the flight from Denver to San Antonio?

A nonstop Denver — San Antonio flight takes about 2 h 8 min — the distance between the cities is around 1,289 km.

How far is it from Denver to San Antonio?

The distance from Denver to San Antonio is about 1,289 km, which a nonstop flight covers in around 2 h 8 min.

Are there direct flights from Denver to San Antonio?

Yes, there are nonstop flights Denver — San Antonio — around 71 flights per week.

Which airlines fly from Denver to San Antonio?

Airlines operating Denver — San Antonio include United Airlines, Frontier Airlines, Southwest Airlines, Volaris. See the full list with schedules in the "Airlines" section on this page.

Which airports do Denver — San Antonio flights use?

Flights from Denver depart from Denver International Airport, Centennial Airport, and arrive at San Antonio International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Denver to San Antonio?

The price of a Denver — San Antonio ticket depends on your travel date, season and demand: it is usually cheapest to fly in October, and most expensive in March. Tickets typically cost between $58 and $235. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Denver — San Antonio?

Flights Denver — San Antonio are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is October. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Denver to San Antonio?

To catch a low fare Denver — San Antonio, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually October.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Denver

See all
Los AngelesSeattlePhoenixNew York CitySalt Lake CitySan DiegoDallasLas VegasMinneapolisChicagoHoustonAtlantaPortlandAustinColorado SpringsSan FranciscoWashington, D.C.OrlandoKansas CityNashvilleSanta AnaDetroitOklahoma CityAspenRapid CityMiamiPhiladelphiaSacramentoAlbuquerqueSt. LouisBostonWichitaSan JoseBoiseMidlandCharlotteGrand JunctionOmahaTulsaVancouver

Where else you can fly from San Antonio

See all
DallasLos AngelesHoustonChicagoAtlantaLas VegasPhoenixMinneapolisMexico CitySalt Lake CitySeattleCharlotteDetroitMonterreyOrlandoNew York CityPhiladelphiaGuadalajaraMiamiWashington, D.C.Fort LauderdaleSan JuanCancunBostonTorontoQuerétaroSan FranciscoLeonTampaSan Luis PotosíBrownsvilleManhattanLafayette

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