Domestic route
Cheap flights from San Antonio to Denver
San Antonio International Airport (SAT) to Denver International Airport (DEN). 795 miles, 2h nonstop.
SAT to DEN at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 795 milesgreat-circle
- Typical flight time
- 2hnonstop, gate to gate
- Nonstop airlines
- AAUAWNB68 airlinesAmerican, United, Southwest
- Nonstop flights per day
- 22all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Tuesday20% less than Sunday
- Time difference
- 1h behindDenver vs San Antonio
San Antonio to Denver
Round trips from $77
Per traveler, taxes and fees included. Lowest fare we found departs Tue, Jan 5.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppSan Antonio to Denver fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying San Antonio to Denver
8 airlines fly nonstop with 22 departures a day combined.
- UAUnited AirlinesStar AllianceNonstop · 5 flights a day · first checked bag from $40
- F9Frontier AirlinesLow-costNonstop · 4 flights a day · first checked bag from $55
- WNSouthwest AirlinesLow-costNonstop · 3 flights a day · first checked bag from $35
- ASAlaska AirlinesoneworldNonstop · 2 flights a day · first checked bag from $35
- AAAmerican AirlinesoneworldNonstop · 2 flights a day · first checked bag from $40
- B6JetBlueNonstop · 2 flights a day · first checked bag from $40
- NKSpirit AirlinesLow-costNonstop · 2 flights a day · first checked bag from $55
- SYSun Country AirlinesLow-costNonstop · 2 flights a day · first checked bag from $45
Connecting options
Every itinerary on this route is nonstop or uses an unusual connection; run a search for specifics.
Tips for this route
- American, United, Southwest and JetBlue all fly SAT to DEN nonstop, so compare the total with bags before picking the lowest base fare: the difference between a basic and a standard economy ticket is often less than one checked bag each way.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $77; September 2026 is the most expensive at $99 and up, a difference of $22 per traveler.
- Departing on a Tuesday averages 20% less than a Sunday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks.
Destination guide
Denver: Mile-high base camp for the Rockies
Denver International is the third-busiest airport in the country and a hub for United, Southwest and Frontier, which keeps fares low from every direction. The city itself is a lively base for the Rockies, with ski resorts 90 minutes away.
Best time to visit: June–September for hiking and Red Rocks concerts; December–March for skiing. Spring can swing from snow to 70°F in a week; September is dependably dry and golden.
Flying the other way? Denver to San AntonioFares, airlines and tips for DEN to SAT.Ready to compare live fares?
See every airline on SAT–DEN side by side with bags and seat rules spelled out.
Search San Antonio to DenverSan Antonio to Denver: common questions
How long is the flight from San Antonio to Denver?
A nonstop flight from San Antonio (SAT) to Denver (DEN) takes about 2h gate to gate, covering 795 miles. Connecting itineraries add the layover, typically 1 to 3 hours more in total.
Which airlines fly nonstop from SAT to DEN?
American Airlines, United Airlines, Southwest Airlines, JetBlue, Alaska Airlines, Spirit Airlines, Frontier Airlines and Sun Country Airlines operate nonstop flights from San Antonio (SAT) to Denver (DEN), with 22 nonstop departures a day between them.
What is the cheapest month to fly from San Antonio to Denver?
Over the next six months, January 2027 has the lowest round-trip fares from San Antonio (SAT) to Denver (DEN), starting at $77 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.
How far in advance should I book San Antonio to Denver flights?
Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between San Antonio and Denver?
Denver is 1 hour behind San Antonio. SAT is on America/Chicago time and DEN on America/Denver time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.