SAT - DEN

$66 Find Cheap Flights from San Antonio to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to Denver departing on 6/2. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

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

Cheapest round-trip
$157
Typical prices: $408-$184
Frontier
Tue 6/9Wed 6/17
SAT - DEN • Non-stop
Cheapest one-way
$66
Typical prices: $99-$230
Frontier
Tue 6/2
SAT - DEN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Frontier's Economy Bundle includes a carry-on and seat choice.
Security lines at San Antonio are exceptionally short.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Frontier, Southwest and United Airlines. Average duration is 2h 19m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
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+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
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Flight Deals

Cheap Flights from San Antonio to Denver (SAT-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to Denver 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Antonio to Denver

Tue, Jun 9 - Wed, Jun 17
Frontier Logo
7:51 pm - 9:25 pm
SAT
-
DEN
2h 34mnonstop
Frontier Logo
3:40 pm - 6:56 pm
DEN
-
SAT
2h 16mnonstop
$157Frontier
Tue, Jul 14 - Tue, Jul 28
Frontier Logo
7:51 pm - 9:26 pm
SAT
-
DEN
2h 35mnonstop
Frontier Logo
3:40 pm - 6:54 pm
DEN
-
SAT
2h 14mnonstop
$160Frontier
Tue, Jun 9 - Wed, Jun 17
Frontier Logo
7:51 pm - 9:25 pm
SAT
-
DEN
2h 34mnonstop
Frontier Logo
12:47 pm - 8:11 pm
DEN
-
SAT
6h 24m
1 stop
$164Frontier
Tue, Jun 16 - Tue, Jul 28
Frontier Logo
7:51 pm - 9:25 pm
SAT
-
DEN
2h 34mnonstop
Frontier Logo
3:40 pm - 6:54 pm
DEN
-
SAT
2h 14mnonstop
$168Frontier
Tue, Jul 14 - Tue, Jul 28
Frontier Logo
7:51 pm - 9:26 pm
SAT
-
DEN
2h 35mnonstop
Frontier Logo
3:40 pm - 6:54 pm
DEN
-
SAT
2h 14mnonstop
$174Frontier
Tue, Jun 2 - Tue, Jun 9
Frontier Logo
7:54 pm - 9:23 pm
SAT
-
DEN
2h 29mnonstop
Frontier Logo
3:40 pm - 6:56 pm
DEN
-
SAT
2h 16mnonstop
$176Frontier
Wed, Jun 3 - Mon, Jun 8
Frontier Logo
7:54 pm - 9:23 pm
SAT
-
DEN
2h 29mnonstop
Frontier Logo
3:42 pm - 6:59 pm
DEN
-
SAT
2h 17mnonstop
$177Frontier
Mon, Jun 1 - Sat, Jun 6
Frontier Logo
7:54 pm - 9:23 pm
SAT
-
DEN
2h 29mnonstop
Frontier Logo
3:42 pm - 6:59 pm
DEN
-
SAT
2h 17mnonstop
$178Frontier
Sat, Jun 6 - Sat, Jun 13
Frontier Logo
7:54 pm - 9:23 pm
SAT
-
DEN
2h 29mnonstop
Frontier Logo
3:40 pm - 6:56 pm
DEN
-
SAT
2h 16mnonstop
$179Frontier
Tue, Jun 2 - Wed, Jun 3
Frontier Logo
7:54 pm - 9:23 pm
SAT
-
DEN
2h 29mnonstop
Frontier Logo
3:42 pm - 6:59 pm
DEN
-
SAT
2h 17mnonstop
$180Frontier
Booking Insights

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

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

How much is a round-trip flight from San Antonio to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Antonio to Denver departing in June.

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

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

For San Antonio to Denver, Thursday is the cheapest day to fly on average and Monday is the most expensive. Flying from Denver back to San Antonio, the best deals are generally found on Friday, with Monday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Antonio to Denver, 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 San Antonio to Denver is February, where tickets cost $183 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $266 and $237 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Antonio to Denver, 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 San Antonio to Denver, you should book around 2 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Expert advice

Expert advice for your flight from San Antonio to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

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.

Blane Bachelor

Blane Bachelor

Expert on Southwest

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.

Brandon Schultz

Brandon Schultz

Expert on SAT

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.

Harriet Baskas

Harriet Baskas

Expert on DEN

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.

Good to know

Low seasonApril
Cheapest flight$66
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from San Antonio to Denver

When to book flights from San Antonio to Denver

Are your dates flexible? Find out the best times to travel from San Antonio to Denver 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 San Antonio to Denver

  • How can I get from the Denver International Airport (DEN) into the city?

    Denver International Airport (DEN) is about 35min from downtown. The city has a light rail system that goes from the airport to Denver Union Station, which is in the heart of the city. To catch the train, you can do so at the rail station which is close to the airport hotel.

  • What kind of food can I purchase at the San Antonio International Airport (SAT)?

    Before boarding your plane, you can enjoy dining at a variety of restaurants. If you want something quick, there is a pretzel shop and a submarine sandwich shop in the terminal. If you're looking to sit down and dine, there is a pizzeria, a Mexican eatery, and a Mediterranean cafe.

  • How do I rent a car at the Denver International Airport (DEN)?

    There are several car rental agencies with offices at this Colorado airport. Therefore, you'll have your pick of companies to rent from including Hertz, National, and Thrifty. To get to the car rental offices, you'll catch a shuttle from outside of baggage claim. Simply look for the shuttle with the name of your car rental company. When you return the car, you'll drop it off and ride the shuttle back to the airport to catch your flight.

  • What amenities and services are there for passengers at the Denver International Airport (DEN)?

    There is a spa at the airport in the Mezzanine where you can get a massage or another spa service. You can enjoy a quick bite at the pretzel or coffee shop, or a sit-down meal at the steakhouse or sports bar.

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

    In the last 3 days, the lowest price for a flight from San Antonio to Denver was $66 for a one-way ticket and $157 for a round-trip.

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

    No

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

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

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the San Antonio to Denver flight route.

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

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between San Antonio and Denver, with SkyTeam being the most commonly used for this route.

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

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

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

    The two airlines most popular with KAYAK users for flights from San Antonio to Denver are Southwest and Delta. With an average price for the route of $305 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $242 and an overall rating of 7.9.

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

    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 San Antonio to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from San Antonio 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 San Antonio to Denver?

    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 Denver with an airline and back to San Antonio with another airline. Booking your flights between San Antonio and DEN 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 San Antonio to Denver?

    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 Denver from San Antonio 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 San Antonio to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $132 or less one-way and $209 or less round-trip.
  • There is a Westin at the Denver International Airport (DEN). This is convenient if your flight gets into Denver late. The Westin Denver International Airport has its own restaurant and bar, fitness center, and indoor pool. It is located outside of Jeppesen Terminal.
  • When catching your flight to Denver, your driver can drop you off at the departure level in front of your terminal at the San Antonio International Airport (SAT). However, you will have to get out of and unload your baggage quickly because parking is not allowed here.
  • There are several ATMs at the Denver International Airport (DEN) in the Jeppesen Terminal. In Terminal 6, there is also a credit union where you can conduct financial business.
  • If you'd prefer to drive yourself to the San Antonio International Airport (SAT), long-term parking is available in the airport's garage. This is your best option during the winter months. However, if you want to save money, there are a couple of economy lots near the cell phone lot.
  • The San Antonio Airport is a medium-sized airport with a variety of services and amenities. It is less than a 10min drive from downtown. The airport has two terminals and twenty-four gates.
  • When you land at the Denver International Airport (DEN), head to the information desk to learn about local tourist attractions, hotels, transportation into the city, and more. The information desk is located in the Jeppesen Terminal, Level 5.

Prefer to fly direct from San Antonio to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Antonio to Denver Intl.
Find which airlines fly direct from San Antonio Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

San Antonio to Denver Intl

Monday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Tuesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Wednesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Thursday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Friday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Saturday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Sunday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

See more direct flights

Direct returns

Denver Intl to San Antonio

Monday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Tuesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Wednesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Thursday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Friday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Saturday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Sunday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

See more direct flights

Reviews of the top 5 airlines serving from San Antonio to Denver

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to Denver. 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 San Antonio to Denver? 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 4295 reviews
8.1Boarding
7.0Food
7.5Entertainment
8.0Comfort
8.6Crew
Airline reviews

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

10.0 Excellentdebra, Apr 2026
LBB - LAS
Read more Southwest reviews

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Plane was late. Zero service for 2+ hour flight and it was not that bumpy.

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

I elected to pay for the upgrades and found very little difference

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

The entertainment options on the seat back video boards were nice.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

Cancelled BOYH legs of our flight home 30 min before initial boarding

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

This flight was delayed but it worked in my favor because my Atlanta to Dallas flight was delayed.

The staff was nice. I appreciated that I was able to take an earlier flight, even though it was last minute. The boarding process felt rather chaotic.

My flight got delayed a total of five times. And the boarding gate changed four times. most of the time the platform was not up-to-date with the changes taking place. The most discouraging part of the entire trip by far.

Returned home with a blood clot from flight homes and the uncomfortable aircraft I was on.

The crew was very kind, but no in-flight entertainment monitors and a 2 hour and 30 minute delay was extremely frustrating.

Everything was delayed and the staff sent me to the wrong gate, causing me to miss one of my flights. I arrived at my destination 6 hours later than I was supposed to.

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

It was really a terrific experience both going and returning on AA. Staff and crew were professional.

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

It was an early flight and most people napped/slept and the crew let us which was nice.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

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

Other airlines flying from San Antonio to Denver

Flights from the other most popular airlines that fly from San Antonio to Denver according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.