$48+ Cheap flights from San Antonio to Denver (SAT - DEN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — DEN
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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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 February or January, booked 74 days in advance, depart on a Thursday or Friday and return on a Thursday
Cheap flight deals from San Antonio to Denver
Cheapest
Best
Last-minute
One-way
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 September 23, 2026.
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 September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:47 pm -
Nonstop2h 22m
Thu 12/104:52 pm -
Nonstop2h 10m
Deal found 9/21![Frontier logo]()
$130
This Cheapflightsfares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:21 pm -
Nonstop2h 28m
Sat 10/174:19 pm -
Nonstop2h 07m
Deal found 9/20![Frontier logo]()
$131
This Cheapflightsfares deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:21 pm -
Nonstop2h 28m
Mon 10/194:19 pm -
Nonstop2h 07m
Deal found 9/18![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:20 pm -
Nonstop2h 29m
Thu 11/194:06 pm -
Nonstop2h 19m
Deal found 9/21![Frontier logo]()
$133
This CheapOair deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:21 pm -
Nonstop2h 28m
Tue 11/34:06 pm -
Nonstop2h 19m
Deal found 9/20![Frontier logo]()
$136
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:21 pm -
Nonstop2h 28m
Wed 10/214:19 pm -
Nonstop2h 07m
Deal found 9/19![Frontier logo]()
$138
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:47 pm -
1 stop9h 56m
Sat 10/244:19 pm -
Nonstop2h 07m
Deal found 9/19![Frontier logo]()
$142
This Expedia deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:03 am -
1 stop23h 04m
Sat 10/244:19 pm -
Nonstop2h 07m
Deal found 9/19![Frontier logo]()
$144
This Super.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 pm -
Nonstop2h 29m
Mon 11/24:06 pm -
Nonstop2h 19m
Deal found 9/20![Frontier logo]()
$149
Best flights from San Antonio to DenverDiscover 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 September 23, 2026.
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 September 23, 2026.
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:00 pm -
2 stops5h 30m
Sat 12/55:30 pm -
Nonstop2h 10m
Deal found 9/22![Southwest logo]()
$202
This Delta deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 am -
1 stop7h 04m
Fri 11/132:24 pm -
1 stop9h 09m
Deal found 9/19![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:17 pm -
1 stop4h 51m
Wed 10/74:20 pm -
1 stop5h 31m
Deal found 9/21![United Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:45 pm -
1 stop4h 30m
Fri 10/168:50 pm -
Nonstop2h 05m
Deal found 9/21![Southwest logo]()
$233
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:55 am -
2 stops7h 15m
Mon 11/162:00 pm -
2 stops5h 40m
Deal found 9/21![Southwest logo]()
$320
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:15 am -
2 stops5h 30m
Tue 10/66:50 am -
1 stop4h 00m
Deal found 9/20![Southwest logo]()
$408
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/194:43 pm -
Nonstop2h 27m
Sun 12/275:27 pm -
Nonstop2h 13m
Deal found 9/18![United Airlines logo]()
$499
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:25 am -
1 stop4h 00m
Tue 12/298:35 am -
2 stops5h 35m
Deal found 9/23![Southwest logo]()
$414
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:45 pm -
1 stop4h 30m
Mon 10/125:25 pm -
1 stop6h 15m
Deal found 9/23![Southwest logo]()
$421
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/188:50 am -
Nonstop2h 22m
Mon 12/281:40 pm -
Nonstop2h 16m
Deal found 9/18![United Airlines logo]()
$587
This Southwest deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:55 am -
2 stops6h 15m
Thu 11/269:05 am -
2 stops7h 40m
Deal found 9/19![Southwest logo]()
$423
This United Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:58 pm -
1 stop5h 17m
Wed 10/143:45 pm -
2 stops6h 06m
Deal found 9/19![United Airlines logo]()
$664
Last-minute flights from San Antonio to DenverDiscover last-minute flight deals from San Antonio to Denver. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Denver. Data last updated September 23, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:21 pm -
Nonstop2h 28m
Sat 10/174:19 pm -
Nonstop2h 07m
Deal found 9/20![Frontier logo]()
$131
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:21 pm -
Nonstop2h 28m
Wed 10/214:19 pm -
Nonstop2h 07m
Deal found 9/19![Frontier logo]()
$138
This Cheapflightsfares deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:21 pm -
Nonstop2h 28m
Mon 10/194:19 pm -
Nonstop2h 07m
Deal found 9/18![Frontier logo]()
$132
This Cheapflightsfares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:47 pm -
1 stop9h 56m
Sat 10/244:19 pm -
Nonstop2h 07m
Deal found 9/20![Frontier logo]()
$142
This Expedia deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:03 am -
1 stop23h 04m
Sat 10/244:19 pm -
Nonstop2h 07m
Deal found 9/19![Frontier logo]()
$144
This CheapOair deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:21 pm -
Nonstop2h 28m
Tue 11/34:06 pm -
Nonstop2h 19m
Deal found 9/20![Frontier logo]()
$136
This Super.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 pm -
Nonstop2h 29m
Mon 11/24:06 pm -
Nonstop2h 19m
Deal found 9/20![Frontier logo]()
$149
One-way flights from San Antonio to DenverSearch for one-way flight options from San Antonio to Denver. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from San Antonio to Denver. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This Super.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:47 pm -
Nonstop2h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Frontier logo]()
$48
This Priceline deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:21 pm -
Nonstop2h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$49
This CheapOair deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:20 pm -
Nonstop2h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$50
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:21 pm -
Nonstop2h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:21 pm -
Nonstop2h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$59
This Super.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:47 pm -
Nonstop2h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$66
This Cheapflightsfares deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:20 pm -
Nonstop2h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$67
This Frontier deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:21 pm -
Nonstop2h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:21 pm -
Nonstop2h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:20 pm -
Nonstop2h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$79
Find flight deals from San Antonio to Denver
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $130 (Kiwi.com) |
One-way from | $48 (Super.com) |
Popular in | June |
Cheapest in | February |
Average price | $256 |
Good round-trip deal | $279 or less |
Good one-way deal | $165 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 23, 2026.
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
Cheapest round-trip
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Tue 10/20
6:35 am-11:56 am
1 stop6h 21m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$104
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Wed 11/11
5:40 pm-10:25 pm
1 stop5h 45m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$104
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Sat 10/24
5:00 pm-10:32 pm
1 stop6h 32m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$104
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Fri 10/16
1:10 pm-7:50 pm
1 stop7h 40m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$114
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Fri 10/23
6:24 pm-11:44 pm
1 stop6h 20m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$122
Quickest round-trip
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Mon 11/2
1:52 pm-3:11 pm
Nonstop2h 19m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$179
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Thu 10/15
5:30 am-6:59 am
Nonstop2h 29m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$179
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Thu 12/17
1:50 pm-3:11 pm
Nonstop2h 21m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$179
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Wed 12/2
3:00 pm-7:30 pm
2 stops5h 30m
Denver Intl
Sat 12/5
5:30 pm-8:40 pm
Nonstop2h 10m
$202
San AntonioDenver
SAT San Antonio - DEN Denver Intl
SATDEN
San Antonio
Sat 12/12
5:55 am-12:10 pm
2 stops7h 15m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$212
Showing 1-10 of 23 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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 FlightHub the most. FlightHub 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.
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.
SAT-DEN
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
Prices
Airlines
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 73 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, February is the cheapest month in which you can book a flight from San Antonio to Denver (average of $183). Flying from San Antonio to Denver in June is currently the most expensive (average of $348). 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?
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 September 23, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 52% 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?
Use this chart to determine the cheapest time to fly round-trip from San Antonio to Denver. Price data was last updated on September 19, 2026.
Travelers seeking maximum savings on their San Antonio to Denver flight should consider departing on Tuesday 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.
The best insider tips for San Antonio to Denver flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to Denver trip
Our travel experts
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated September 23, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican Airlines from San Antonio to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Westminster
Lakewood
Centennial
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Limon
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Top 4 airlines flying from San Antonio to Denver
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$68 | Average$185 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$138 | Average$335 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$197 | Average$356 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$216 | Average$346 | FlexibilityNo cancel fee | On-time71% |