DEN - SAT

$67 Find Cheap Flights from Denver to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to San Antonio departing on 5/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Antonio, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Antonio, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Denver to San Antonio

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Denver to San Antonio

KAYAK's recommended round-trip deals from the most popular airlines that fly from Denver to San Antonio.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
3:55 pm - 7:13 pmDEN-SAT
2h 18mnonstop
Frontier Logo
8:14 pm - 9:45 pmSAT-DEN
2h 31mnonstop
$138Frontier
Find Deal
Thu, Jul 24 - Sun, Jul 27
Frontier Logo
3:35 pm - 6:51 pmDEN-SAT
2h 16mnonstop
Frontier Logo
7:36 pm - 9:04 pmSAT-DEN
2h 28mnonstop
$155Frontier
Find Deal
Thu, May 22 - Thu, May 29
United Airlines Logo
9:54 am - 1:04 pmDEN-SAT
2h 10mnonstop
United Airlines Logo
9:10 am - 10:27 amSAT-DEN
2h 17mnonstop
$197United Airlines
Find Deal
Sat, May 31 - Wed, Jun 4
Southwest Logo
8:50 pm - 12:05 amDEN-SAT
2h 15mnonstop
Southwest Logo
7:20 pm - 11:05 pmSAT-DEN
4h 45m1 stop
$207Southwest
Find Deal
Tue, Jun 3 - Sat, Jun 7
Delta Logo
3:35 pm - 12:39 amDEN-SAT
8h 04m1 stop
Delta Logo
12:40 pm - 7:30 pmSAT-DEN
7h 50m1 stop
$217Delta
Find Deal
Tue, Jun 3 - Sat, Jun 7
Delta Logo
3:35 pm - 9:45 pmDEN-SAT
5h 10m1 stop
Delta Logo
7:45 am - 2:45 pmSAT-DEN
8h 00m1 stop
$226Delta
Find Deal
Sat, May 24 - Sat, May 31
Southwest Logo
6:10 am - 11:45 amDEN-SAT
4h 35m1 stop
Southwest Logo
8:30 am - 9:45 amSAT-DEN
2h 15mnonstop
$227Southwest
Find Deal
Sat, May 31 - Wed, Jun 4
American Airlines Logo
6:33 pm - 11:58 pmDEN-SAT
4h 25m1 stop
American Airlines Logo
5:00 am - 10:03 amSAT-DEN
6h 03m1 stop
$243American Airlines
Find Deal
Thu, May 22 - Sun, May 25
American Airlines Logo
4:37 pm - 11:02 pmDEN-SAT
5h 25m1 stop
American Airlines Logo
7:34 pm - 11:59 pmSAT-DEN
5h 25m1 stop
$254American Airlines
Find Deal
Thu, May 22 - Thu, May 29
United Airlines Logo
9:54 am - 1:04 pmDEN-SAT
2h 10mnonstop
United Airlines Logo
5:35 am - 6:54 amSAT-DEN
2h 19mnonstop
$277United Airlines
Find Deal
Tue, Jun 10 - Thu, Jun 12
Expert advice

Expert advice for your flight from Denver to San Antonio

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Frontier

Frontier's Economy Bundle includes a carry-on and seat selection, ideal for budget-conscious travelers.


Opt for Premium Bundle for extra legroom and priority boarding, enhancing comfort on short flights.

Read more about Frontierby Stefanie Waldek
United Airlines

United's Economy Plus offers up to six inches more legroom, enhancing comfort on short flights.


United's Wi-Fi allows free messaging; check coverage map for streaming options before flying.

Southwest

Southwest offers two free checked bags, ideal for travelers with lots of luggage.


For a better seat, use EarlyBird Check-In for an earlier boarding position.

Read more about Southwestby Blane Bachelor
Airports
DEN

Use the DEN Reserve program for expedited security. Book online up to 3 days in advance for slots from 5 a.m. – 5 p.m.

Read more about DENby Harriet Baskas
SAT

Take the #5 VIA bus from SAT to downtown San Antonio. It’s inexpensive, takes about 30 minutes, and has plenty of room for luggage.

Read more about SATby Brandon Schultz
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Useful Info

KAYAK's insights & trends for Denver to San Antonio flights

Get data-powered insights and trends into flights from Denver to San Antonio to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to San Antonio
Find cheap flights to San Antonio

Planning a trip from Denver to San Antonio? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Denver to San Antonio?

The average price of all round-trip flights from Denver to San Antonio clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to San Antonio on a Wednesday and more expensive on a Friday. On your return trip to Denver, you should consider flying back on a Saturday, and avoid Mondays for better deals.

What is the cheapest month to fly from Denver to San Antonio?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to San Antonio is August, where tickets cost $138 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $317 and $253 respectively.

How far in advance should I book a flight from Denver to San Antonio?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to San Antonio, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJanuary
High seasonDecember
Cheapest flight$67
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly with an average 53% increase in price.
Flight from Denver to San Antonio

When to book flights from Denver to San Antonio

Are your dates flexible? Find out the best times to travel from Denver to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to San Antonio

  • What flight options do I have from Denver to San Antonio?

    You can fly nonstop from Denver International Airport (DEN) to San Antonio International Airport (SAT). Some of the airlines that have nonstop flights on this route are Frontier, United Airlines, and Southwest Airlines. You can also find layover flights from DEN to SAN. Frontier Airlines also has a flight with a layover at Harry Reid International Airport (LAS). You can find a flight by American Airlines with a layover at the Dallas/Fort Worth International Airport (DFW).

  • Is there an onsite hotel at Denver International Airport (DEN)?

    You can access the Westin Denver International Airport hotel by going up the escalator at the Transit center of Jeppesen Terminal. If you want a place to stay close to the airport, the hotel is within a short walking distance of the main terminal. The hotel offers both shuttle and public transport services.

  • How do I get from San Antonio International Airport (SAT) to downtown San Antonio?

    On arrival at SAT Airport, you can opt for public transportation from the airport to downtown San Antonio. The Super Shuttle is the only authorized shared-ride shuttle at the airport, which departs every 15min daily. You can also catch the VIA Metropolitan Transit buses which have a clearly marked stop between Terminals A and B at the Arrivals/Baggage level. You can also opt for taxi services which stop on the outer curbside of Terminal A.

  • What services does Denver International Airport (DEN) offer for people with reduced mobility?

    DEN is a partner with the Hidden Disabilities Sunflower organization which offers the Sunflower Lanyard Program. This is a subtle way of notifying the airport’s staff that you may need assistance due to a hidden disability. You can get the Sunflower Lanyard at the customer service desk or a DEN Ambassador at the center of each concourse. DEN has also made sure that all its services are wheelchair accessible, such as the elevators, restrooms, escalators, and TTY phones. DEN also utilizes the remote Aira way-finding agents to direct the blind or people with low vision.

  • What is the cheapest flight from Denver to San Antonio?

    In the last 3 days, the lowest price for a flight from Denver to San Antonio was $67 for a one-way ticket and $138 for a round-trip.

  • Do I need a passport to fly between Denver and San Antonio?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to San Antonio?

    Denver and San Antonio are both served by 1 main airport. You will leave Denver from Denver Intl and will be arriving at San Antonio.

  • Which airlines offer Wi-Fi service onboard planes from Denver to San Antonio?

    American Airlines, JetBlue, Alaska Airlines, and Delta offer inflight Wi-Fi service on the Denver to San Antonio flight route.

  • Which aircraft models fly most regularly from Denver to San Antonio?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Denver to San Antonio flight route.

  • Which airline alliances offer flights from Denver to San Antonio?

    Star Alliance is the only airline alliance operating flights between Denver and San Antonio.

  • On which days can I fly direct from Denver to San Antonio?

    There are nonstop flights from Denver to San Antonio on a daily basis.

  • Which is the best airline for flights from Denver to San Antonio, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to San Antonio are Southwest and United Airlines. With an average price for the route of $320 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $305 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Denver to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Denver with another airline. Booking your flights between Denver and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to San Antonio

  • Looking for a cheap flight? 25% of our users found flights on this route for $109 or less one-way and $178 or less round-trip.
  • If you’re a mother traveling with a young toddler, Denver International Airport (DEN) offers tranquil nursing rooms for you to nurse or pump. You can find the nursing rooms at the Center of Jeppesen Terminal, Level 5, and inside the women's restroom,
  • On arrival at San Antonio International Airport (SAT), you can rent a car from different rental companies at the rental counters found at the facility of Consolidated Car Rentals. You can get to the rental car facility by taking the elevator or escalator to the Mezzanine Level in Terminal B and crossing the Sky Bridge.
  • If you are traveling with your furry travelers, you can find the pet relief areas at DEN for them to do their business before the flight. You can find the pet relief areas pre-security outside of Door 200 on the west side of Jeppesen Terminal, and post-security at the A, B, and C Gates near the respective U.S. Mail Drops.
  • If you need assistance at the San Antonio International Airport (SAT), you get free assistance from the trained Airport Ambassadors volunteers. The Airport Ambassadors visibly wear cowboy hats and offer information about the airport, hotels, ground transportation, and directions within the terminals.
  • For those who get nervous when flying, the Denver International Airport (DEN) offers the Canine Airport Therapy Squad (CATS) which is an animal therapy program. There are 80 dogs and one cat that you can hug pet, and take pictures with while at the airport. You can spot the DEN CATS anywhere in the airport, they have violet vests.

Prefer to fly direct from Denver to San Antonio?

Find which airlines fly direct from Denver Intl Airport to San Antonio Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to San Antonio

Monday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Tuesday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Wednesday

Air Canada, Lufthansa, Southwest, +1 more

Air Canada, Lufthansa, +2 more

Thursday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Friday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Saturday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Sunday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

See more direct flights

Direct returns

San Antonio to Denver Intl

Monday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Tuesday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Wednesday

Air Canada, Lufthansa, Southwest, +1 more

Air Canada, Lufthansa, +2 more

Thursday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Friday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Saturday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

Sunday

Air Canada, Frontier, Lufthansa, +2 more

Air Canada, Frontier, +3 more

See more direct flights
See more direct flights

Top 4 airlines serving from Denver to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Denver to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
8.2Boarding
7.6Entertainment
8.0Comfort
7.1Food
8.6Crew
Airline reviews

I would have liked to arrive on time - not 5 hours late!

4.0 OkayAnonymous, Apr 2025DEN - SEA
Read more Southwest reviews

I would have liked to arrive on time - not 5 hours late!

1.5 hour delay, poor service, no compassion from the crew. Terrible experience

Our flight was diverted from being a non-stop to getting within 150 miles and requiring another plane. We heard 4 or 5 different versions from SW as to why we had to stop, then wait for a replacement plane. Five hour delay, weather did not come up as a single excuse.... communication was not clear and well explained. No one really took charge!

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

Multiple delays and gate changes. Arrived at final destination 6 hours late. All rental cars had been taken.

The movies using Southwest WiFi kept pausing and I had to restart multiple times.

First, my flight was a usual flight nothing exceptional or unexpected. Over all it was a normal, good flight! Second, your questionaire is wholly lacking in the proper options to which one can answer a question. Often on short flights, there is no food let alone entertainment so why isn't that reflected in your questionaire? A simple "not applicable" would cover that issue appropriately but no, your form arbitrarily enters an answer based on the initial assessment which normally isn't factual. Until you provide an accurate means of assessing flights, I'll no longer be completing of these unimpressive and misleading assessements. Thank you!

Easy to book and to get check in and get on and off.

It seems as though the provisions are even less. Although SWA used to be an economy Airline, that isn't really the case anymore. I paid over $700. for a round trip to Denver and I could have flown just about any airline for the price. The drinks are now in a 6-ounce cup and with ice I'm sure a can would fill more than 2 cups. However, I am very proud of SWA for using paper rather than continuing to contribute to the millions of plastic cups being used each day. I've thought of this fr many years and am so glad to see it come to fruition, if not by only SWA so far.

Service was great, boarding and exiting went smoothly, and the flight was very pleasant.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Plane still had screens for watching movies. Good selection too.

There was no air on the plane and it was very hot.

Several delays. Next flight was worse. Did not arrive home until 2am PT

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

Any sort of gluten free snack option would be nice

I had a carry on and a personal bag. I put my personal item under my seat and on way to the seat I put my bag up. I usually close my eyes and rest as I was on call for last 36 hours. I heard very loud announcements that someone needs to identify their bag. Pretty sure it was not mine until the hostess pointed out my jacket details attached to the bag. I asked why she got my bag out. I got berated and did not want to create a scene. But this person needs to be talked to.

Between Las Vegas and Dallas was okay But, once in the Dallas airport, notice, I have disability and ask for a wheelchair, they leave in a middle of nowhere, the personal in charge try to push me on a cart where I couldn't sit because was to high. Then they don't care about me, they bulling, till I start to yelling and crying, ask to everyone around, who can help me. The man in charge make a despective movements and said you are to loosing the fly. The last name in his batch started with an H, I did not have the full name. A nightmare. After all, a woman in charge was walking very slowly and asking me for a tip cause she was helping me to reach the fly. For years, AA has been the preferred airline. The personal in charge of the disabled people are discriminate me. Thank you Kayak.

Flight was late and missed connecting flight. They could have better accommodated, but instead did an overnight and had to arrive the next afternoon.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

April was the flight attendant in first class and was the most pleasant, cordial and efficient person I have seen on a flight in years. Good example of the type of people AA should hire to increase customer satisfacdtion.

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

The boarding experience was good; $20 for wifi per flight is uncompetitive compared to Delta, Southwest, and others, and puts American lower on my list given similar pricing.

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Boarding was very well executed. Got my bag right away.

Overall experience good. There was no food and seats were not terribly comfortable.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

There were a lot of issues every step of the process. Check in, security, boarding, and dealing with luggage. Plus the money you think you are saving you end up using in hidden fees.

The flight attendant was arguing with a passenger before takeoff. The passenger was frustrated but the flight attendant should have handled it with grace, but instead she was nasty and rude. The seats were comfortable and the flight was uneventful. I wish we didn’t have to pay for drinks or snacks but that’s what you get with a budget airline.

First time experience and though you'll pay for *everything* meaning bags, water/snacks, even a question with a service agent - - all in all, not a bad experience whatsoever.

Booked two aisle seats and were switched to an aisle and middle. Not happy.

Everything you need to know for your flight from Denver to San Antonio

Information on your arrival and departure airports

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