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

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Fri 11/24
Fri 12/1
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Good to Know

Low Season:
May
Best time to beat the crowds
4%
expected price decrease
High Season:
March
Most popular time to fly
12%
expected price increase
Average Price:
$259
(avg. price over the last 2 weeks)
Good Deal:
$165
or less (round trip)

When to Book Flights from San Antonio to Denver International

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $165 or less.
The cheapest flight from San Antonio to Denver International was found 25 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be February, March and April. The cheapest month to fly is May.
Morning departure is around 10% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking San Antonio to Denver International Flights

How long does a flight from San Antonio to Denver International take?
An average nonstop flight takes 2h 21m, covering a distance of 796 miles.
How many flights are there between San Antonio and Denver International?
There are 142 (nonstop) flights between San Antonio and Denver International per week, averaging 21 per day.
Which airlines provide the cheapest flights from San Antonio to Denver International?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($97), Multiple Airlines ($129) and Delta ($164).
Do I need a passport to fly between San Antonio and Denver International?
No.
Which airlines fly most frequently between San Antonio and Denver International?
Southwest (7 times daily), Air Canada (5 times daily), United (5 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Antonio to Denver International?
For San Antonio to Denver International, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Denver International back to San Antonio, the best deals are generally found on Tuesday, with Saturday being the most expensive.

Book cheap flights from San Antonio to Denver International (round-trip)

Airports
Origin
San Antonio
$97
only
$97
Destination
Denver
$97
only
$97
Tue, Dec 5
SAT
DEN
2h 25m
Sun, Dec 10
DEN
SAT
2h 15m
Trip: 6 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Mediocre 2.0

Ticket price before hidden fees.

Extra seat fee to get a seat when checking in. Flight was over 30 min late leaving and we sat in Denver 30 to get a gate to get off the plane.

SAT
DEN
Good 6.5

In San Antonio not available early enough at the counter. Couldn't log into their computers to accept bags. Bag drop should always be available because of online check-in and baggage payment. All we needed to do was drop a bag. Should't have to stand in line at check-in when everything is done and all you have to do is drop a bag. No incentive to use online check-in and payment.

SAT
DEN
Mediocre 2.0

Nothing

My flight was delay and they told me I was going to have time to get my second plane to Orange County California, when got to my lay over my plane was still there but the tunnel gate was closed. The tunnel was still connected to the plain but nobody to assist me. The plane stood there for about 20 minutes and nobody helped. Then once the plane left went to customer service and encountered a unapologetic lady that gave me the option to go either to LAX to get there at 9:30 pmor San Diego at 10:00 pm but I was suppose to get to Orange County at 3 pm, when i had a 9 month pregnant wife at home who couldn't drive due to been due any moment. I ended up going to LAX and getting there past 10 pm was not able to find anyone to pick me up on a Saturday night so had to take an Uber to OC which cost me about $90+ and frontier did nothing for me, just gave me a voucher for $15 to eat while I waited for the LAX flight. As we all know food is expensive at airports what can I possible buy with $15 besides fast food. And no offense to fast food but I'm a 6'6" and 230 lbs I need to eat a little more than a Big Mac meal.

SAT
DEN
Excellent 10.0

Even though we didn't have seats together, we were able to get them together with the help of the flight attendant.

SAT
DEN
Mediocre 2.0

Nothing. This was the worst experience I have ever had with an airline.

The wait to check a bag was about an hour. Then, my flight was cancelled 30 minutes before takeoff due to "weather." None of the other airlines were delayed. I ended up booking another ticket with a different airline, because other passengers said they had been trying to get rebooked on frontier for the previous week.

Sun, Jan 7
SAT
DEN
2h 30m
Tue, Jan 16
DEN
SAT
2h 09m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 30
SAT
DEN
7h 45m
Tue, Jun 5
DEN
SAT
8h 14m
Trip: 7 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 13693 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
AMS
YYZ
Excellent 8.3

The flight attendant named Steven went so far beyond the call. He was attentive, he fixed our video system when no one else could and when he learned we were celebrating an anniversary he brought us a present. He was awesome!

JFK
CUN
Excellent 9.0

Entertainment and crew were great- comfortable seats, got to watch a couple of movies with headphones provided by Delta; forgot mine so I assumed I would be miserable thru the whole 4 hour flight. so glad I was wrong! Would definitely take another flight with Delta... looking into the frequent flyer program as we speak

PBI
ATL
Good 6.0

On time; safe flight

Service from boarding to landing was impersonal. No headphones etc. Etc.

LAX
HNL
Okay 5.0

The gentleman at the gate was super helpful and helped us check our bags at the gate.

Zero leg room. Zero arm room. The entertainment system did not function. No food for such a long flight unless you pay more then the food is actually worth.

ATL
HPN
Good 7.3

It was on time

It was crowded and cramped.

Sun, Jan 7
SAT
DEN
2h 30m
Thu, Jan 11
DEN
SAT
2h 15m
Trip: 5 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Okay 4.0

Didn't know that frontier now charges for carryon bags and any drink on the plane (alcohol and non-alcoholic). Probably will not fly frontier again

SAT
DEN
Mediocre 2.0

Ticket price before hidden fees.

Extra seat fee to get a seat when checking in. Flight was over 30 min late leaving and we sat in Denver 30 to get a gate to get off the plane.

SAT
DEN
Excellent 8.0

I didn't really have much interaction with the crew as I was sleeping the entire flight. Everything was going good as far as getting to San Antonio. It was quick.

SAT
DEN
Excellent 10.0

Even though we didn't have seats together, we were able to get them together with the help of the flight attendant.

SAT
DEN
Mediocre 2.0

Nothing. This was the worst experience I have ever had with an airline.

The wait to check a bag was about an hour. Then, my flight was cancelled 30 minutes before takeoff due to "weather." None of the other airlines were delayed. I ended up booking another ticket with a different airline, because other passengers said they had been trying to get rebooked on frontier for the previous week.

Thu, Jan 18
SAT
DEN
2h 30m
Sun, Jan 21
DEN
SAT
2h 15m
Trip: 4 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Mediocre 2.0

Nothing

My flight was delay and they told me I was going to have time to get my second plane to Orange County California, when got to my lay over my plane was still there but the tunnel gate was closed. The tunnel was still connected to the plain but nobody to assist me. The plane stood there for about 20 minutes and nobody helped. Then once the plane left went to customer service and encountered a unapologetic lady that gave me the option to go either to LAX to get there at 9:30 pmor San Diego at 10:00 pm but I was suppose to get to Orange County at 3 pm, when i had a 9 month pregnant wife at home who couldn't drive due to been due any moment. I ended up going to LAX and getting there past 10 pm was not able to find anyone to pick me up on a Saturday night so had to take an Uber to OC which cost me about $90+ and frontier did nothing for me, just gave me a voucher for $15 to eat while I waited for the LAX flight. As we all know food is expensive at airports what can I possible buy with $15 besides fast food. And no offense to fast food but I'm a 6'6" and 230 lbs I need to eat a little more than a Big Mac meal.

SAT
DEN
Mediocre 2.0

Ticket price before hidden fees.

Extra seat fee to get a seat when checking in. Flight was over 30 min late leaving and we sat in Denver 30 to get a gate to get off the plane.

SAT
DEN
Okay 4.5

There was no pressing weather, but delays simply from a lack of a crew. However, the crew was friendly and nice on board. But every time I fly frontier, we get delayed.

SAT
DEN
Okay 4.0

Didn't know that frontier now charges for carryon bags and any drink on the plane (alcohol and non-alcoholic). Probably will not fly frontier again

SAT
DEN
Okay 4.6

Long waiting after boarding.

Thu, Jan 25
SAT
DEN
2h 30m
Sun, Jan 28
DEN
SAT
2h 15m
Trip: 4 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Okay 5.0

Boarding was easy.

Uncomfortable seats even for 2 hour flight, & who charges $2.99 for a can of coke?!?

SAT
DEN
Okay 4.0

Didn't know that frontier now charges for carryon bags and any drink on the plane (alcohol and non-alcoholic). Probably will not fly frontier again

SAT
DEN
Mediocre 2.0

Nothing. This was the worst experience I have ever had with an airline.

The wait to check a bag was about an hour. Then, my flight was cancelled 30 minutes before takeoff due to "weather." None of the other airlines were delayed. I ended up booking another ticket with a different airline, because other passengers said they had been trying to get rebooked on frontier for the previous week.

SAT
DEN
Okay 4.6

Long waiting after boarding.

SAT
DEN
Excellent 8.0

I didn't really have much interaction with the crew as I was sleeping the entire flight. Everything was going good as far as getting to San Antonio. It was quick.

Thu, Feb 1
SAT
DEN
2h 30m
Tue, Feb 6
DEN
SAT
2h 09m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Feb 1
SAT
DEN
2h 30m
Tue, Feb 6
DEN
SAT
2h 15m
Trip: 6 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Okay 5.6

Frontier has no entertainment on this flight. Flight was delayed about an hour, assumption was that it was weather, but never clarified.

SAT
DEN
Mediocre 2.0

Nothing. This was the worst experience I have ever had with an airline.

The wait to check a bag was about an hour. Then, my flight was cancelled 30 minutes before takeoff due to "weather." None of the other airlines were delayed. I ended up booking another ticket with a different airline, because other passengers said they had been trying to get rebooked on frontier for the previous week.

SAT
DEN
Okay 4.6

Long waiting after boarding.

SAT
DEN
Excellent 10.0

Clean roomy planes. Professional helpful polite flight attendants. Smooth ride. Easy on and off. Comfortable seats. Ontime!

Only water offered complimentary. Charging for a carryon bag. charging for an early seat selection.

SAT
DEN
Good 6.5

In San Antonio not available early enough at the counter. Couldn't log into their computers to accept bags. Bag drop should always be available because of online check-in and baggage payment. All we needed to do was drop a bag. Should't have to stand in line at check-in when everything is done and all you have to do is drop a bag. No incentive to use online check-in and payment.

Thu, Feb 1
SAT
DEN
2h 30m
Tue, Feb 6
DEN
SAT
2h 15m
Trip: 6 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Okay 4.0

Didn't know that frontier now charges for carryon bags and any drink on the plane (alcohol and non-alcoholic). Probably will not fly frontier again

SAT
DEN
Excellent 8.0

I didn't really have much interaction with the crew as I was sleeping the entire flight. Everything was going good as far as getting to San Antonio. It was quick.

SAT
DEN
Mediocre 2.0

Ticket price before hidden fees.

Extra seat fee to get a seat when checking in. Flight was over 30 min late leaving and we sat in Denver 30 to get a gate to get off the plane.

SAT
DEN
Good 6.5

In San Antonio not available early enough at the counter. Couldn't log into their computers to accept bags. Bag drop should always be available because of online check-in and baggage payment. All we needed to do was drop a bag. Should't have to stand in line at check-in when everything is done and all you have to do is drop a bag. No incentive to use online check-in and payment.

SAT
DEN
Okay 5.6

Frontier has no entertainment on this flight. Flight was delayed about an hour, assumption was that it was weather, but never clarified.

Wed, Jan 31
SAT
DEN
2h 22m
Sun, Feb 4
DEN
SAT
2h 15m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Dec 5
SAT
DEN
2h 21m
Sun, Dec 10
DEN
SAT
2h 15m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 6
SAT
DEN
2h 25m
Tue, Mar 13
DEN
SAT
2h 11m
Trip: 7 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Mediocre 2.0

Ticket price before hidden fees.

Extra seat fee to get a seat when checking in. Flight was over 30 min late leaving and we sat in Denver 30 to get a gate to get off the plane.

SAT
DEN
Okay 5.0

Boarding was easy.

Uncomfortable seats even for 2 hour flight, & who charges $2.99 for a can of coke?!?

SAT
DEN
Okay 4.5

There was no pressing weather, but delays simply from a lack of a crew. However, the crew was friendly and nice on board. But every time I fly frontier, we get delayed.

SAT
DEN
Okay 4.6

Long waiting after boarding.

SAT
DEN
Excellent 8.0

I didn't really have much interaction with the crew as I was sleeping the entire flight. Everything was going good as far as getting to San Antonio. It was quick.

Thu, Dec 14
SAT
DEN
27h 56m
Sun, Dec 17
DEN
SAT
2h 11m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Dec 8
SAT
DEN
29h 20m
Wed, Dec 13
DEN
SAT
7h 09m
Trip: 6 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Okay 4.5

There was no pressing weather, but delays simply from a lack of a crew. However, the crew was friendly and nice on board. But every time I fly frontier, we get delayed.

SAT
DEN
Okay 5.6

Frontier has no entertainment on this flight. Flight was delayed about an hour, assumption was that it was weather, but never clarified.

SAT
DEN
Good 6.5

In San Antonio not available early enough at the counter. Couldn't log into their computers to accept bags. Bag drop should always be available because of online check-in and baggage payment. All we needed to do was drop a bag. Should't have to stand in line at check-in when everything is done and all you have to do is drop a bag. No incentive to use online check-in and payment.

SAT
DEN
Excellent 10.0

Even though we didn't have seats together, we were able to get them together with the help of the flight attendant.

SAT
DEN
Okay 5.0

Boarding was easy.

Uncomfortable seats even for 2 hour flight, & who charges $2.99 for a can of coke?!?

Thu, Nov 30
SAT
DEN
2h 25m
Sun, Dec 3
DEN
SAT
2h 15m
Trip: 4 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Okay 4.0

Didn't know that frontier now charges for carryon bags and any drink on the plane (alcohol and non-alcoholic). Probably will not fly frontier again

SAT
DEN
Mediocre 2.0

Nothing

My flight was delay and they told me I was going to have time to get my second plane to Orange County California, when got to my lay over my plane was still there but the tunnel gate was closed. The tunnel was still connected to the plain but nobody to assist me. The plane stood there for about 20 minutes and nobody helped. Then once the plane left went to customer service and encountered a unapologetic lady that gave me the option to go either to LAX to get there at 9:30 pmor San Diego at 10:00 pm but I was suppose to get to Orange County at 3 pm, when i had a 9 month pregnant wife at home who couldn't drive due to been due any moment. I ended up going to LAX and getting there past 10 pm was not able to find anyone to pick me up on a Saturday night so had to take an Uber to OC which cost me about $90+ and frontier did nothing for me, just gave me a voucher for $15 to eat while I waited for the LAX flight. As we all know food is expensive at airports what can I possible buy with $15 besides fast food. And no offense to fast food but I'm a 6'6" and 230 lbs I need to eat a little more than a Big Mac meal.

SAT
DEN
Excellent 10.0

Clean roomy planes. Professional helpful polite flight attendants. Smooth ride. Easy on and off. Comfortable seats. Ontime!

Only water offered complimentary. Charging for a carryon bag. charging for an early seat selection.

SAT
DEN
Good 6.5

In San Antonio not available early enough at the counter. Couldn't log into their computers to accept bags. Bag drop should always be available because of online check-in and baggage payment. All we needed to do was drop a bag. Should't have to stand in line at check-in when everything is done and all you have to do is drop a bag. No incentive to use online check-in and payment.

SAT
DEN
Mediocre 2.0

Ticket price before hidden fees.

Extra seat fee to get a seat when checking in. Flight was over 30 min late leaving and we sat in Denver 30 to get a gate to get off the plane.

Fri, Nov 24
SAT
DEN
8h 31m
Tue, Nov 28
DEN
SAT
20h 31m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Mar 10
SAT
DEN
9h 40m
Thu, Mar 15
DEN
SAT
2h 11m
Trip: 5 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Mediocre 2.0

Ticket price before hidden fees.

Extra seat fee to get a seat when checking in. Flight was over 30 min late leaving and we sat in Denver 30 to get a gate to get off the plane.

SAT
DEN
Okay 5.0

Boarding was easy.

Uncomfortable seats even for 2 hour flight, & who charges $2.99 for a can of coke?!?

SAT
DEN
Okay 5.6

Frontier has no entertainment on this flight. Flight was delayed about an hour, assumption was that it was weather, but never clarified.

SAT
DEN
Excellent 10.0

Clean roomy planes. Professional helpful polite flight attendants. Smooth ride. Easy on and off. Comfortable seats. Ontime!

Only water offered complimentary. Charging for a carryon bag. charging for an early seat selection.

SAT
DEN
Mediocre 2.0

Nothing. This was the worst experience I have ever had with an airline.

The wait to check a bag was about an hour. Then, my flight was cancelled 30 minutes before takeoff due to "weather." None of the other airlines were delayed. I ended up booking another ticket with a different airline, because other passengers said they had been trying to get rebooked on frontier for the previous week.

Fri, Dec 22
SAT
DEN
9h 33m
Fri, Dec 29
DEN
SAT
11h 32m
Trip: 8 days
5.0OkayShow reviews
Overall 5.0 Okay
Based on 90 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
SAT
DEN
Okay 4.6

Long waiting after boarding.

SAT
DEN
Okay 4.5

There was no pressing weather, but delays simply from a lack of a crew. However, the crew was friendly and nice on board. But every time I fly frontier, we get delayed.

SAT
DEN
Okay 4.0

Didn't know that frontier now charges for carryon bags and any drink on the plane (alcohol and non-alcoholic). Probably will not fly frontier again

SAT
DEN
Mediocre 2.0

Nothing. This was the worst experience I have ever had with an airline.

The wait to check a bag was about an hour. Then, my flight was cancelled 30 minutes before takeoff due to "weather." None of the other airlines were delayed. I ended up booking another ticket with a different airline, because other passengers said they had been trying to get rebooked on frontier for the previous week.

SAT
DEN
Okay 5.6

Frontier has no entertainment on this flight. Flight was delayed about an hour, assumption was that it was weather, but never clarified.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.