$79 Cheap United flights San Antonio (SAT) to Denver (DEN)

View $79 flight on Sat, Sep 20, 2025Opens in a new window

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$79 Cheap United flights San Antonio (SAT) to Denver (DEN)

Prices were available within the past 7 days and start at $79 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Sep 20 - Sat, Sep 27
SAT
San Antonio
DEN
Denver
$157 Roundtrip, found 16 hours ago
$157
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Sep 20 from San Antonio to Denver, returning Sat, Sep 27, priced at $157 found 16 hours ago
Flights from San Antonio (SAT) to Denver (DEN)
Origin airport
San Antonio Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Delta
Distance
794 mi
Average flight time
1 hour 16 mins

Frequently asked questions

How much is a United Airlines flight from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Finding cheap one-way United Airlines flights from SAT to DEN from $79 on Expedia is simple --- just filter by "Price (lowest to highest)." Or check out our affordable return fares from $157 for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SAT to DEN with United Airlines?
Browse for return or one-way flights to Denver in January or November. You could find cheaper fares with United Airlines during these off-peak months.
What is the cheapest time to book flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) with United Airlines?
To find cheap United Airlines fares from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact what you pay. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Depart on one of United Airlines's 21 direct weekly flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN). To view available options, enter your travel dates, origin and destination and hit search. Then select the "Nonstop" and "Airline" filters.
How long does it take to fly from SAT to DEN with United Airlines?
Leave San Antonio Intl. Airport (SAT) for Denver Intl. Airport (DEN) on a direct United Airlines flight, and you'll be in the air for about 2h 23m.
Which day of the week has the most United Airlines flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
United Airlines has the most flights from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) on Thursday. With up to 3 daily departures, you'll get the most flexibility on this day.
What is the earliest United Airlines flight from SAT to DEN?
Taking off from SAT at 8:49AM UTC-6, the first United Airlines flight to DEN arrives at 10:12AM UTC-7. Traveling early means you're less likely to experience cancellations.* Not an early riser? The last United Airlines flight from SAT to DEN departs at 4:50PM UTC-6 and touches down at 6:14PM UTC-7.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Denver?
Catch a United Airlines flight from San Antonio Intl. Airport (SAT) to Denver, and you'll probably come in to Denver Intl. Airport (DEN). This is the airline's main hub in this destination.
Why fly with United Airlines from SAT to DEN?
Offering a rewarding loyalty program, United Airlines is a popular choice for many passengers departing from SAT to DEN. Plus, if you're a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
For the San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN) route, United Airlines typically operates Boeing 737-800 and Airbus A319 planes. Keep in mind that last-minute changes can occur for operational demands, so your flight may be on a different aircraft.
Can I change or cancel my United Airlines flight from San Antonio Intl. Airport (SAT) to Denver Intl. Airport (DEN)?
Depending on the type of ticket you purchased, a fee generally applies if you cancel or reschedule your flight more than 24 hours after it's confirmed. To secure flexible plane tickets, select our "Changes included" or "No cancel fee" filter when you look for flights. To learn more about canceling or modifying your reservation, head to "Trips," select your flight and tick "Manage Booking."

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