How popular is this San Antonio to Denver flight route?

The San Antonio to Denver Intl flight path was viewed by 206 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from San Antonio to Denver round-trip?

Currently priced at $137, Frontier will fly you from San Antonio to Denver and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Southwest - these airlines can fly you to your destination from $197 and $207, respectively. You may be able to fly from San Antonio to Denver for 16% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from San Antonio to Denver one-way?

One-way options have recently been found by users for as low as $68 on Frontier. Other airlines that offer cheap prices include United Airlines from $89 and Delta from $99 one-way.

What are the cheapest flights from San Antonio to Denver?

Looking for the cheapest flight from San Antonio to Denver? While on average our users pay $901, our data indicates the cheapest price to be $95. The most popular route (San Antonio - Denver Intl), is priced around $174.

What are the most reliable airlines from San Antonio to Denver?

The top 3 most reliable airlines when flying from San Antonio to Denver are Lufthansa (90%), Air Canada (89%) and Southwest (88%).

What are the most popular airlines that fly from San Antonio to Denver?

Before booking your flight from San Antonio to Denver check out the most popular airlines for this route: American Airlines, Delta or Frontier.

What is the cheapest day to fly round-trip from San Antonio to Denver?

Leaving on a Friday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 54% on the overall cost on flights from San Antonio to Denver.

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

Travelers have found it’s best to book a flight 54 days in advance to save up to 86% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 54 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from San Antonio to Denver 1-2 weeks in advance for as low as $148, or $357 for flights within the next 24 hours.

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

The best pricing can be found in the month of August. Prices to Denver from San Antonio average $164. You can even find prices in August for less than $164, as users have found deals to Denver from as low as $38. The month of December appears to be one of the more expensive times to travel to Denver from San Antonio. Flying in the targeted month can save you up to 39%.

Most accurate provider : When it comes to deals on San Antonio-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Denver flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Antonio-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airports do I use to fly from San Antonio to Denver?

If you wish to fly to Denver from San Antonio, then you need to book flights from San Antonio to Denver Intl. There are 10 flights from San Antonio (SAT) to Denver Intl (DEN) per day to choose from. Flights to Denver from San Antonio are available from 5 different airlines, which means you should have some options if you want to compare airfare deals. 2h 10m is how long a nonstop flight from San Antonio to Denver Intl typically takes.

Can I find deals for flights from San Antonio to Denver that include hotel bookings?

Yes. In addition to deals on San Antonio to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Antonio to Denver?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Denver.

Can I find deals for business class flights from San Antonio to Denver?

Yes. Cheapflights offers flight deals from San Antonio to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$68+ Flights from San Antonio to Denver

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from San Antonio to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Antonio to Denver Intl are usually found in August or September, booked 64 days in advance, depart on a Saturday or Wednesday and return on a Wednesday

Cheap flight deals from San Antonio to Denver

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$137 (Kiwi.com)
One-way from	$68 (Cheapflightsfares)
Popular in	December
Cheapest in	August
Average price	$178
Good round-trip deal	$218 or less
Good one-way deal	$149 or less

Provider with most accurate pricing for San Antonio-Denver Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Antonio-Denver Intl flights.

Search Deals

From San Antonio to Denver Intl

Search Deals

One-way flight from San Antonio to Denver Intl

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($25 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from San Antonio to Denver Intl.

Search Deals

Price to beat on a one-way flight from San Antonio to Denver Intl.

Search Deals

Find flight deals from San Antonio to Denver

Cheapest flights from San Antonio to Denver
Explore the most affordable flight options available from San Antonio to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Sat 6/146:59 pmSAT - DEN

Nonstop2h 30mFrontier

Sat 6/212:45 pmDEN - SAT

Nonstop2h 18mFrontier

Deal found 4/15

$137

Wed 6/189:10 amSAT - DEN

Nonstop2h 17mUnited Airlines

Tue 6/248:35 pmDEN - SAT

Nonstop2h 21mUnited Airlines

Deal found 4/15

$197

Sat 5/177:50 amSAT - DEN

2 stops6h 05mSouthwest

Wed 5/217:10 pmDEN - SAT

Nonstop2h 15mSouthwest

Deal found 4/14

$212

Sat 6/148:00 amSAT - DEN

1 stop8h 00mDelta

Fri 6/2012:59 amDEN - SAT

1 stop7h 43mDelta

Deal found 4/15

$217

Sun 5/185:00 amSAT - DEN

1 stop4h 16mAmerican Airlines

Thu 5/225:00 amDEN - SAT

1 stop4h 03mAmerican Airlines

Deal found 4/15

$301

Best flights from San Antonio to Denver
Discover carefully curated flight deals from San Antonio to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 16, 2025.

Sat 6/146:59 pmSAT - DEN

Nonstop2h 30mFrontier

Sat 6/212:45 pmDEN - SAT

Nonstop2h 18mFrontier

Deal found 4/15

$137

Tue 5/135:30 amSAT - DEN

Nonstop2h 34mUnited Airlines

Tue 5/208:23 pmDEN - SAT

Nonstop2h 23mUnited Airlines

Deal found 4/15

$197

Sat 5/1712:25 pmSAT - DEN

1 stop6h 35mSouthwest

Wed 5/217:10 pmDEN - SAT

Nonstop2h 15mSouthwest

Deal found 4/14

$207

Sat 6/148:00 amSAT - DEN

1 stop8h 00mDelta

Mon 6/1612:59 amDEN - SAT

1 stop9h 16mDelta

Deal found 4/15

$217

Sun 5/185:00 amSAT - DEN

1 stop4h 16mAmerican Airlines

Thu 5/225:00 amDEN - SAT

1 stop4h 03mAmerican Airlines

Deal found 4/15

$301

Wed 6/46:45 amSAT - DEN

3 stops36h 37mMultiple Airlines

Sun 6/87:13 pmDEN - SAT

1 stop13h 34mMultiple Airlines

Deal found 4/15

$385

Last-minute flights from San Antonio to Denver
Discover last-minute flight deals from San Antonio to Denver. Data last updated April 16, 2025 and is based on user searches.

Tue 4/225:42 pmSAT - DEN

Nonstop2h 27mFrontier

Tue 4/291:35 pmDEN - SAT

Nonstop2h 17mFrontier

Deal found 4/15

$168

Tue 4/229:04 amSAT - DEN

Nonstop2h 23mUnited Airlines

Tue 4/226:03 pmDEN - SAT

Nonstop2h 12mUnited Airlines

Deal found 4/15

$317

Tue 4/222:28 pmSAT - DEN

1 stop4h 12mAmerican Airlines

Tue 4/226:40 pmDEN - SAT

1 stop4h 18mAmerican Airlines

Deal found 4/15

$331

Thu 4/247:15 pmSAT - DEN

1 stop5h 10mSouthwest

Tue 4/298:20 amDEN - SAT

2 stops5h 35mSouthwest

Deal found 4/15

$332

Thu 4/245:39 amSAT - DEN

2 stops29h 44mMultiple Airlines

Sat 4/266:40 pmDEN - SAT

3 stops37h 52mMultiple Airlines

Deal found 4/15

$504

Sat 4/268:15 amSAT - DEN

1 stop7h 24mDelta

Fri 5/212:55 amDEN - SAT

1 stop8h 04mDelta

Deal found 4/16

$307

Sat 4/266:35 amSAT - DEN

1 stop8h 03mAlaska Airlines

Sat 5/38:20 amDEN - SAT

2 stops14h 39mAlaska Airlines

Deal found 4/16

$758

Tue 5/135:30 amSAT - DEN

Nonstop2h 34mUnited Airlines

Tue 5/208:23 pmDEN - SAT

Nonstop2h 23mUnited Airlines

Deal found 4/15

$197

Sat 5/177:50 amSAT - DEN

2 stops6h 05mSouthwest

Wed 5/217:10 pmDEN - SAT

Nonstop2h 15mSouthwest

Deal found 4/14

$212

Sun 5/185:00 amSAT - DEN

1 stop4h 16mAmerican Airlines

Thu 5/225:00 amDEN - SAT

1 stop4h 03mAmerican Airlines

Deal found 4/15

$301

Sun 5/187:00 amSAT - DEN

2 stops35h 27mMultiple Airlines

Thu 5/226:54 pmDEN - SAT

2 stops25h 56mMultiple Airlines

Deal found 4/15

$378

Wed 5/216:00 amSAT - DEN

1 stop6h 39mDelta

Tue 5/277:05 amDEN - SAT

1 stop5h 40mDelta

Deal found 4/16

$208

One-way flights from San Antonio to Denver
Search for one-way flight options from San Antonio to Denver. Find affordable one-way fares based on user searches. Data last updated April 16, 2025.

Sat 6/216:59 pmSAT - DEN

Nonstop2h 30mFrontier

Deal found 4/16

$68

Tue 5/205:30 amSAT - DEN

Nonstop2h 34mUnited Airlines

Deal found 4/14

$89

Tue 5/2012:08 pmSAT - DEN

1 stop9h 11mDelta

Deal found 4/15

$99

Fri 7/412:55 pmSAT - DEN

Nonstop2h 20mSouthwest

Deal found 4/16

$108

Fri 7/45:00 amSAT - DEN

1 stop4h 11mAmerican Airlines

Deal found 4/16

$118

Mon 7/146:35 pmSAT - DEN

1 stop17h 49mSun Country Air

Deal found 4/15

$123

Thu 5/811:42 amSAT - DEN

2 stops30h 45mMultiple Airlines

Deal found 4/16

$160

Wed 5/146:35 amSAT - DEN

2 stops15h 40mAlaska Airlines

Deal found 4/15

$302

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Antonio to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sat 6/14

6:59 pm-8:29 pm

Nonstop2h 30m

Denver Intl

Sat 6/21

2:45 pm-6:03 pm

Nonstop2h 18m

$137

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Tue 5/13

5:30 am-7:04 am

Nonstop2h 34m

Denver Intl

Tue 5/20

8:23 pm-11:46 pm

Nonstop2h 23m

$197

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sat 5/17

12:25 pm-6:00 pm

1 stop6h 35m

Denver Intl

Wed 5/21

7:10 pm-10:25 pm

Nonstop2h 15m

$207

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sat 6/14

8:00 am-3:00 pm

1 stop8h 00m

Denver Intl

Mon 6/16

12:59 am-11:15 am

1 stop9h 16m

$217

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sun 5/18

5:00 am-8:16 am

1 stop4h 16m

Denver Intl

Thu 5/22

5:00 am-10:03 am

1 stop4h 03m

$301

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Wed 6/4

6:45 am-6:22 pm

3 stops36h 37m

Denver Intl

Sun 6/8

7:13 pm-9:47 am

1 stop13h 34m

$385

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Sat 6/14

6:59 pm-8:29 pm

Nonstop2h 30m

$68

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Tue 5/20

5:30 am-7:04 am

Nonstop2h 34m

$89

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Tue 5/20

12:08 pm-8:19 pm

1 stop9h 11m

$99

San AntonioDenver

SAT - DEN

SATDEN

San Antonio

Fri 7/4

12:55 pm-2:15 pm

Nonstop2h 20m

$108

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 14 results

Compare providers for flights from San Antonio to Denver

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Denver in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust Score*3 stars
CheapOair	Price Accuracy1 star	Trust Score*3 stars
Flightnetwork	Price Accuracy-	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Antonio-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Denver flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Antonio-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for San Antonio to Denver flights

Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to Denver trip

Airlines

Frontier

Frontier offers extra comfort seats with 32” separation for a fee, enhancing your travel experience.

Early morning flights have a better chance of on-time departure, avoiding carry-over delays.

Read more about Frontierby Marisa Garcia

United Airlines

United Economy Plus offers extra legroom seats towards the front of the economy cabin.

United's MileagePlus program allows pooling miles for tickets or upgrades, benefiting infrequent flyers.

Read more about United Airlinesby Harriet Baskas

Southwest

Southwest offers two free checked bags, including oversized items like skis or golf clubs.

Enjoy free in-flight entertainment streamed to your device, including movies and live TV.

Read more about Southwestby Marisa Garcia

Airports

SAT

SAT offers a family-friendly play area near gate A16, perfect for keeping kids entertained before your flight.

DEN

Take the A Line train from DEN to Union Station for a quick 37-minute ride to downtown Denver.

Our travel experts

Marisa Garcia

Expert on Frontier and Southwest

Harriet Baskas

Expert on United Airlines

Ramsey Qubein

Expert on SAT

Emily Zemler

Expert on DEN

Best time to book a flight from San Antonio to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from San Antonio with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

To ensure you get the cheapest price possible for a flight from San Antonio to Denver, you should look to book at least 64 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Antonio to Denver?

Currently, October is the cheapest month in which you can book a flight from San Antonio to Denver (average of $197). Flying from San Antonio to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SAT to DEN?

Unlike at noon, when flights are generally more expensive, you can save up to 64% on flights from San Antonio to Denver by exploring options for tickets in the evening.

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

Travelers seeking maximum savings on their San Antonio to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Antonio to Denver

The most flights from SAT to DEN are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Denver by month

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Denver

To help decide which airline to fly from San Antonio to Denver, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,882 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very good

4,282 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,917 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,665 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,882 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

What airports do I use to fly from San Antonio to Denver?
If you wish to fly to Denver from San Antonio, then you need to book flights from San Antonio to Denver Intl. There are 10 flights from San Antonio (SAT) to Denver Intl (DEN) per day to choose from. Flights to Denver from San Antonio are available from 5 different airlines, which means you should have some options if you want to compare airfare deals. 2h 10m is how long a nonstop flight from San Antonio to Denver Intl typically takes.
How popular is this San Antonio to Denver flight route?
The San Antonio to Denver Intl flight path was viewed by 206 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines flying from San Antonio to Denver round-trip?
Currently priced at $137, Frontier will fly you from San Antonio to Denver and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Southwest - these airlines can fly you to your destination from $197 and $207, respectively. You may be able to fly from San Antonio to Denver for 16% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from San Antonio to Denver one-way?
One-way options have recently been found by users for as low as $68 on Frontier. Other airlines that offer cheap prices include United Airlines from $89 and Delta from $99 one-way.
What are the most reliable airlines from San Antonio to Denver?
The top 3 most reliable airlines when flying from San Antonio to Denver are Lufthansa (90%), Air Canada (89%) and Southwest (88%).
What are the cheapest flights from San Antonio to Denver?
Looking for the cheapest flight from San Antonio to Denver? While on average our users pay $901, our data indicates the cheapest price to be $95. The most popular route (San Antonio - Denver Intl), is priced around $174.
Can I find deals for flights from San Antonio to Denver that include hotel bookings?
Yes. In addition to deals on San Antonio to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Antonio to Denver?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Denver.
Can I find deals for business class flights from San Antonio to Denver?
Yes. Cheapflights offers flight deals from San Antonio to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Antonio to Denver?
Currently, October is the cheapest month in which you can book a flight from San Antonio to Denver (average of $197). Flying from San Antonio to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to Denver

Top 5 airlines flying from San Antonio to Denver

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$39	Average$104	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$118	Average$186	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$148	Average$296	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$158	Average$247	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$178	Average$317	FlexibilityNo cancel fee	On-time63%

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$68+ Cheap flights from San Antonio to Denver (SAT - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Antonio to Denver with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Antonio to Denver Intl are usually found in August or September, booked 64 days in advance, depart on a Saturday or Wednesday and return on a Wednesday

Cheap flight deals from San Antonio to Denver

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Antonio to Denver

Cheapest flights from San Antonio to DenverExplore the most affordable flight options available from San Antonio to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Explore the most affordable flight options available from San Antonio to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Antonio to Denver that are best for you.

Compare providers for flights from San Antonio to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Denver in April.

The best insider tips for San Antonio to Denver flights

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Airlines

Frontier

United Airlines

Southwest

Airports

SAT

DEN

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Best time to book a flight from San Antonio to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from San Antonio with our price prediction graph.

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Denver. Price data was last updated on April 11, 2025.

What is the cheapest month to book a flight from San Antonio to Denver?

What is the cheapest time of day to fly from SAT to DEN?

Find hourly flight availability from San Antonio to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 16, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from San Antonio to Denver. Price data was last updated on March 30, 2025.

Weekly flight availability from San Antonio to Denver

Explore weekly flight availability from San Antonio to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 16, 2025.

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

Reviews of airlines servicing Denver

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from San Antonio to Denver?

How popular is this San Antonio to Denver flight route?

What are the cheapest airlines flying from San Antonio to Denver round-trip?

What are the cheapest airlines to fly from San Antonio to Denver one-way?

What are the most reliable airlines from San Antonio to Denver?

What are the cheapest flights from San Antonio to Denver?

Can I find deals for flights from San Antonio to Denver that include hotel bookings?

How can I find direct flights from San Antonio to Denver?

Can I find deals for business class flights from San Antonio to Denver?

What is the cheapest month to book a flight from San Antonio to Denver?

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Alternative routes for San Antonio to Denver

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Top 5 airlines flying from San Antonio to Denver

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Cheapest flights from San Antonio to Denver
Explore the most affordable flight options available from San Antonio to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.