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Cheap flights from San Antonio International to Denver International

Compare San Antonio International to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

Book the best Denver International fare with no extra fees

Flight deals from San Antonio International to Denver International

Looking for a cheap last-minute deal or the best return flight from San Antonio International to Denver International? Find the lowest prices on one-way and return tickets right here.
Denver.P7,349 per passenger.Departing Sat, 24 May, returning Sat, 31 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Antonio International on Sat, 24 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 31 May, arriving in San Antonio International.Price includes taxes and charges.From P7,349, select.
Denver.P7,368 per passenger.Departing Tue, 3 Jun, returning Sat, 7 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Antonio International on Tue, 3 Jun, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 7 Jun, arriving in San Antonio International.Price includes taxes and charges.From P7,368, select.
Denver.P7,998 per passenger.Departing Tue, 5 Aug, returning Tue, 12 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Antonio International on Tue, 5 Aug, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 12 Aug, arriving in San Antonio International.Price includes taxes and charges.From P7,998, select.
Denver.P8,204 per passenger.Departing Tue, 29 Apr, returning Sun, 4 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Antonio International on Tue, 29 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 4 May, arriving in San Antonio International.Price includes taxes and charges.From P8,204, select.
Denver.P8,445 per passenger.Departing Sun, 6 Jul, returning Sat, 12 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Antonio International on Sun, 6 Jul, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 12 Jul, arriving in San Antonio International.Price includes taxes and charges.From P8,445, select.
Denver.P8,570 per passenger.Departing Tue, 29 Jul, returning Tue, 12 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Antonio International on Tue, 29 Jul, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 12 Aug, arriving in San Antonio International.Price includes taxes and charges.From P8,570, select.
Denver.P8,913 per passenger.Departing Fri, 25 Apr, returning Sun, 27 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Antonio International on Fri, 25 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 27 Apr, arriving in San Antonio International.Price includes taxes and charges.From P8,913, select.
Denver.P9,656 per passenger.Departing Tue, 27 May, returning Sun, 1 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Antonio International on Tue, 27 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 1 Jun, arriving in San Antonio International.Price includes taxes and charges.From P9,656, select.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Antonio International to Denver International flights are currently cheapest in May.
Apr
from P8,913
May
from P7,349
Jun
from P7,368
Jul
from P8,445
Aug
from P7,998
Sep
from P20,272
Oct
from P22,356
Nov
Find prices
Dec
from P25,927
Jan
from P22,622
Feb
Find prices
Mar
Find prices

Direct flights from San Antonio International to Denver International

San Antonio International to Denver International: Alternative routes

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

San Antonio to Denver: Flight information

The things to know before you go.
Cheapest flight foundP7,349
Cheapest month to flyMay
Average flight time2 hrs, 21 mins
Most popular airlineSouthwest Airlines
Average flights per week83

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

The best price we found for a return flight from San Antonio International to Denver International is P7,349. 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 21 minutes is the average flight time from San Antonio International to Denver International.
Southwest Airlines, United and Air Canada fly direct from San Antonio International to Denver International.
As of April 2025, there are 83 flights per week flying from San Antonio International to Denver International.
The cheapest month to fly from San Antonio International to Denver International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Denver International Airport on Saturday, 24 May 2025.
Yes – the average flight time is 2 hours and 21 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 Denver 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 Denver 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 Denver International.

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

  • A direct flight from San Antonio International Airport to Denver International Airport takes on average 2 hours 21 minutes. The timezone in Denver is UTC-6, which makes it 1 hour behind San Antonio.

  • Each week, there are 66 flights from San Antonio International Airport to Denver International Airport. The earliest departure from SAT to DEN is at 05:01 and the last is at 22:59.

  • Delays at security and check-in are likely if you're travelling during high season, so give yourself some extra breathing room. A good general rule for peak periods? Arrive up to four hours ahead for international flights and at least two hours for domestic departures.

  • If you want to have a stopover for your flight from San Antonio International Airport to Denver International Airport, simply uncheck 'Direct flights only' and look at all your options. These are the most popular stopovers between SAT and DEN:

    • Dallas/Fort Worth International Airport

    • Dallas Love Field

    • Colorado Springs Municipal Airport

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

  • P3,931 is currently the lowest price for a one-way ticket from San Antonio International Airport to Denver International Airport. Return flights start from P7,349. These fares may change based on availability.

  • Book 9 months before your departure date. After looking at the numbers on our calendar, this is how far you should book ahead to find cheap tickets from SAT to DEN.

  • Schedule your trip for May. That's the cheapest month for tickets from San Antonio International Airport to Denver International Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to see the cheapest airfare across every month.

  • Log into your online account or use the app to create a Price Alert. We'll get in touch straight away if there's a better deal on this route. It's easy to do, and it'll save you from looking for cheap tickets from SAT to DEN every day.

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

Handy information about San Antonio International Airport (SAT)

Arriving at Denver International Airport (DEN)

  • After your flight from San Antonio International Airport to Denver International Airport has landed, relax and unwind at a nearby hotel. SpringHill Suites Denver Airport is a comfy option just a short drive from DEN.

Getting from Denver International Airport (DEN) to central Denver

  • Denver International Airport to central Denver takes about 34 minutes by car. It's approximately 40 kilometres away. Discover what options are available, such as car rentals, cabs or ride-sharing services.

  • Travelling on public transport takes about 1 hour and 31 minutes.

When to fly to Denver International Airport (DEN)

  • July is the most popular month for flights from San Antonio International Airport to Denver International Airport. To avoid the crowds, go to Denver in April.

  • Book your flight from San Antonio International Airport to Denver International Airport for July if you want to explore Denver during its warmest month. Expect temperatures of between 14 ºC and 32 ºC.

  • January sees average temperatures of between -9 ºC and 7 ºC. Look for cheap tickets from SAT to DEN sometime then if you like cooler conditions.

More about Denver

Complete your Denver trip with hotels and a car rental

  • You've booked your cheap ticket to Denver International Airport — next on the list is finding a place to stay, and maybe even your own set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in Denver.

Plan the rest of your trip from San Antonio to Denver

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