Denver International Airport
Denver, United StatesDEN / KDEN
International hub · 203 direct destinations · 6 runways · longest runway 16,001 ft
43 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Denver → San Antonio
DEN
DenverDenver International Airport
DenverDenver International AirportSATSan AntonioSan Antonio International Airport
San AntonioSan Antonio International Airport- Distance
- 795 mi
- Estimated flight time
- ~2h 5m
San Antonio is currently 1 hour ahead of Denver.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 8 flights a day, observed from October 2025 to September 2026.
- 8
- flights per day
- 10
- busiest month · Mar
- 7
- quietest month · Jan
- 1 hr 42 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 7Jan2026
- 7Feb
- 10Mar
- 8Apr
- 8May
- 9Jun
- 9Jul
- 8Aug
- 8Sep
- 8Oct2025
- 8Nov
- 8Dec
Airlines
Who flies it
Southwest Airlinesall year
United Airlinesall year
Frontier Airlinesall year
SkyWest Airlineswinter
Delta Air Linesnow and then
Through the day
Departure times
Local time in Denver. Most departures between 13:00 and 16:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 8.5Mon
- 7.5Tue
- 7.3Wed
- 8.4Thu
- 8.6Fri
- 8.2Sat
- 7.6Sun
Fleet
Aircraft observed
- Boeing 737-800B73833%
- Boeing 737-700B73720%
- Boeing 737 MAX 8B38M19%
- Airbus A320A3205%
- Airbus A321neoA21N3%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 7 | 213 |
|
| February 2026 | 7 | 189 |
|
| March 2026 | 10 | 288 |
|
| April 2026 | 8 | 235 |
|
| May 2026 | 8 | 235 |
|
| June 2026 | 9 | 271 |
|
| July 2026 | 9 | 273 |
|
| August 2026 | 8 | 230 |
|
| September 2026 | 8 | 237 |
|
| October 2025 | 8 | 240 |
|
| November 2025 | 8 | 236 |
|
| December 2025 | 8 | 245 |
|
Airlines observed on this route
From observed callsign routes on DEN-SAT - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Denver: 203.
- Direct destinations observed from San Antonio: 68.
The airports on this route
San Antonio International Airport
San Antonio, United StatesSAT / KSAT
Major airport · 68 direct destinations · 3 runways · longest runway 8,504 ft
67 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Denver to San Antonio
The observed direct connection between Denver International Airport (DEN) and San Antonio International Airport (SAT) covers approximately 795 mi. The estimated flight time is around 2h 5m. Delta Air Lines, Frontier Airlines, SkyWest Airlines, Southwest Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Denver from San Antonio by air?
- The great-circle distance between Denver International Airport and San Antonio International Airport is approximately 795 mi.
- How long is the flight from Denver to San Antonio?
- Based on the distance, the estimated flight time is about 2h 5m. This is an estimate, not a schedule.
- Is there a direct connection from Denver to San Antonio?
- Yes, a direct connection between DEN and SAT has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Delta Air Lines, Frontier Airlines, SkyWest Airlines, Southwest Airlines and United Airlines.
- How often is there a flight from Denver to San Antonio?
- On average around 8 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,892 observed flights. Mainly Southwest Airlines, United Airlines, Frontier Airlines. That is an observation, not a timetable.
- What is the current time difference between Denver and San Antonio?
- San Antonio is currently 1 hour ahead of Denver.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.