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.
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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.
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 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.
Use the West Security Checkpoint at DEN for faster screening. It allows liquids and laptops to stay in bags, saving time for early flights.
Take the #5 VIA bus from SAT to downtown San Antonio. It's affordable and takes about 30 minutes, perfect for easy city access.
Stefanie Waldek
Expert on Frontier and United Airlines
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 moreBlane Bachelor
Expert on Southwest
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 moreBrandon Schultz
Expert on SAT
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 moreHarriet Baskas
Expert on DEN
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 morePlanning 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.
Low season | June |
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High season | December |
Cheapest flight | $58 |
Direct departures
Denver Intl to San Antonio
Monday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Tuesday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Wednesday
Air Canada, Lufthansa, Southwest, +1 more
Air Canada, Lufthansa, +2 more
1
Thursday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Friday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Saturday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Sunday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Direct returns
San Antonio to Denver Intl
Monday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Tuesday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Wednesday
Air Canada, Lufthansa, Southwest, +1 more
Air Canada, Lufthansa, +2 more
1
Thursday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Friday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Saturday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
Sunday
Air Canada, Frontier, Lufthansa, +2 more
Air Canada, Frontier, +3 more
1
2
I would have liked to arrive on time - not 5 hours late!
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.
Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.
Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁
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!
Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines
The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.
The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.
Pretty bad gate mgmt upon arrival. No open gates and we had to wait at midnight. Shouldn’t be a surprise that an aircraft is coming in.
Mechanical delay and no compensation. Missed connection as a result of their delay. Mediocre performance and service. Horrible airline currently with horrible culture.
Comfortable plane ride however on delays disappointment no real details as to why the delays when other flights are leaving the airport
The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!
I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.
5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.
Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.
I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!
Very bad! No good service delayed my second connection flight
Frontier is terrible. Paid for exit row, not given exit row, refused to refund fee.
2 hour delay due to late plane, wrong size plane causing overbooking, and people getting off and on the plane after boarding was completed.
The worst. We never made our connection and they did absolutely nothing to help us at the airport.
I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.
The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.
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.
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