- Plan, book, fly with confidence
- Be in the knowGet alerts if flight prices drop or rise*
- Book smarterSave up to 30% on select hotels after you book a flight*
Cheap Flights from Denver to San Antonio (DEN-SAT)
Prices were available within the past 7 days and start at $55 for one-way flights and $110 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Origin airport | Denver Intl. |
Destination airport | San Antonio Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United |
Roundtrip price | $104 |
Distance | 794 mi |
Denver to San Antonio Flights
The cheapest times to fly from Denver to San Antonio
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to San Antonio are during the month of May. You can find some of the cheapest flights from Denver to San Antonio with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Denver to San Antonio
Sunday is one of the best days to book for cheap flights from Denver to San Antonio: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Denver to San Antonio
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to San Antonio in 2025. You can also book with separate airlines for your outbound and return journeys, from $55 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to San Antonio flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to San Antonio airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
Frequently asked questions
Explore a world of travel with Expedia
Flights
- Swiss International Air Lines
- British Airways
- United
- Frontier Airlines
- Lufthansa
- Brussels Airlines
- Alaska Airlines
- Air Canada
- Delta
- Iberia
- Aeromexico
- JetBlue Airways
- American Airlines
- Turkish Airlines
- Volaris
- Sun Country Airlines
- Flights from Pueblo Memorial
- Flights from Cheyenne Regional
- Flights from Western Nebraska Regional
- Flights from Laramie Regional
- Flights from Fort Collins-Loveland Municipal
- Flights from Pitkin County
- Flights from Rocky Mountain Metropolitan
- Flights from Yampa Valley
- Flights from Eagle County Regional
- Flights from Colorado Springs
- Frontier Airlines Denver (DEN) to Chicago (ORD) flights
- United Denver (DEN) to Newark Liberty Intl. Airport (EWR) flights
- Alaska Airlines Denver (DEN) to Honolulu (HNL) flights
- Frontier Airlines Denver (DEN) to Phoenix (PHX) flights
- Frontier Airlines Denver (DEN) to Los Angeles (LAX) flights
- Aeromexico Denver (DEN) to Mexico City (MEX) flights
- JetBlue Airways Denver (DEN) to Fort Lauderdale (FLL) flights
- Delta New York (JFK) to San Antonio (SAT) flights
- American Airlines Phoenix (PHX) to San Antonio (SAT) flights
- Alaska Airlines Los Angeles (LAX) to San Antonio (SAT) flights
- United Boston (BOS) to San Antonio (SAT) flights
- American Airlines New York (LGA) to San Antonio (SAT) flights
- Alaska Airlines Seattle (SEA) to San Antonio (SAT) flights
- United San Diego (SAN) to San Antonio (SAT) flights
- Delta Charlotte (CLT) to San Antonio (SAT) flights
- Frontier Airlines Denver (DEN) to Tampa (TPA) flights
- Frontier Airlines Denver (DEN) to New York (LGA) flights
- Frontier Airlines Denver (DEN) to Miami (MIA) flights
- Flights to Fort Lauderdale
- Flights to Las Vegas
- Flights to Washington
- Flights to New Orleans
- Flights to Orlando
- Flights to Gatlinburg
- Flights to New York
- Flights to Nashville
- Flights to San Francisco
- Flights to Chicago
- Flights to San Antonio
- Flights to Houston
- Flights to Los Angeles
- Flights to Honolulu
- Flights to Miami
- Flights to Atlanta
- Flights to San Diego
- Flights to Boston
- Flights to Pigeon Forge
- Flights to Key West
- Flights from Los Angeles (LAX) to Houston (IAH)
- Flights from Dallas (DFW) to Atlanta (ATL)
- Flights from Chicago (ORD) to Denver (DEN)
- Flights from Dallas (DFW) to Denver (DEN)
- Flights from Minneapolis (MSP) to Denver (DEN)
- Flights from Dallas (DFW) to Chicago (ORD)
- Flights from Denver (DEN) to Chicago (ORD)
- Flights from Dallas (DFW) to Seattle (SEA)
- Flights from Denver (DEN) to Newark Liberty Intl. Airport (EWR)
- Flights from Dallas (DFW) to Honolulu (HNL)
- Flights from Denver (DEN) to Honolulu (HNL)
- Flights from Denver (DEN) to Phoenix (PHX)
- Flights from Denver (DEN) to Puerto Vallarta (PVR)
- Flights from Denver (DEN) to San José del Cabo (SJD)
- Flights from Houston (IAH) to Los Angeles (LAX)
- Flights from Denver (DEN) to Los Angeles (LAX)
- Flights from Dallas (DFW) to Los Angeles (LAX)
- Flights from Denver (DEN) to Mexico City (MEX)
- Flights from Dallas (DFW) to Orlando (MCO)
- Flights from Denver (DEN) to Orlando (MCO)
- Flights from Denver (DEN) to Fort Lauderdale (FLL)
- Flights from Toluca (TLC) to San Antonio (SAT)
- Flights from Phoenix (PHX) to San Antonio (SAT)
- Flights from New York (LGA) to San Antonio (SAT)
- Flights from Fort Lauderdale (FLL) to San Antonio (SAT)
- Flights from Mexico City (MEX) to San Antonio (SAT)
- Flights from Los Angeles (LAX) to San Antonio (SAT)
- Flights from Detroit (DTW) to San Antonio (SAT)
- Flights from Newark Liberty Intl. Airport (EWR) to San Antonio (SAT)
- Flights from Boston (BOS) to San Antonio (SAT)
- Flights from Chicago (ORD) to San Antonio (SAT)
- Flights from Charlotte (CLT) to San Antonio (SAT)
- Flights from San Diego (SAN) to San Antonio (SAT)
- Flights from Denver (DEN) to Las Vegas (LAS)
- Flights from Austin (AUS) to Las Vegas (LAS)
- Flights from Dallas (DFW) to Las Vegas (LAS)
- Flights from Houston (IAH) to Las Vegas (LAS)
- Flights from Dallas (DFW) to Cancun (CUN)
- Flights from Houston (HOU) to Cancun (CUN)
- Flights from Denver (DEN) to Tampa (TPA)
- Flights from Dallas (DFW) to Houston (HOU)
- Flights from Atlanta (ATL) to Houston (HOU)
- Flights from Atlanta (ATL) to Dallas (DFW)
- Flights from New York (NYC) to Dallas (DFW)
- Flights from Chicago (ORD) to Dallas (DFW)
- Flights from Los Angeles (LAX) to Dallas (DFW)
- Flights from Houston (HOU) to Dallas (DFW)
- Flights from Dallas (DFW) to New York (NYC)
- Flights from Houston (HOU) to New York (NYC)
- Flights from Denver (DEN) to New York (LGA)
- Flights from Denver (DEN) to Miami (MIA)
- Flights from Houston (IAH) to Miami (MIA)
- Flights from Dallas (DFW) to Miami (MIA)