San Antonio (SAT) to Denver (DEN) is about 800 miles and typically takes 2 h 10 min by air. Airlines with hubs at both ends are the likeliest to offer nonstops; otherwise expect a connection. Call (800) 490-3234 for live fares.
SAT to DEN at a glance
| Route | San Antonio (SAT) to Denver (DEN) |
|---|---|
| Distance | about 800 miles / 1,280 km |
| Typical flight time | 2 h 10 min (estimate) |
| Time difference | 1 hours behind |
| Route type | Domestic (U.S.) |
| Airlines with hubs here | United Airlines and Southwest Airlines |
About the San Antonio to Denver route
Travelers between San Antonio and Denver typically choose between a nonstop flight and a one-stop routing through a hub, depending on price and schedule. The distance is about 800 miles.
Flight time and distance
A typical flight takes about 2 h 10 min gate to gate, with a realistic range of 1 h 50 min to 2 h 35 min depending on wind, routing and aircraft. That is an estimate based on the distance of roughly 800 miles (1,280 km), not a published schedule.
Denver is 1 hour behind San Antonio on standard time, so the arrival time on your ticket will look different from the flight duration.
Among the 200 routes in our guides, SAT to DEN is longer than about 23% of them.
The airports
San Antonio International Airport (SAT)
San Antonio International is a mid-sized airport with easy access and an efficient layout. Full SAT guide.
Denver International Airport (DEN)
Denver is a United hub and one of Southwest's busiest airports, which gives travelers a wide choice of nonstops across the West and Midwest. Full DEN guide.
Nearby alternatives: around San Antonio, Austin (AUS); and around Denver, Colorado Springs. Price all of them before you commit, especially if you have flexible dates.
Airlines on this route
No single carrier we cover has hubs at both SAT and DEN. United Airlines (at DEN) and Southwest Airlines (at DEN) each operate a large network at one end, so many itineraries on this route connect rather than fly nonstop.
Airlines add and drop frequencies throughout the year. Our agents can check what is actually scheduled on your dates.
Common connection points
If you choose a one-stop itinerary, likely routings include United Airlines via Houston (IAH), which adds about 260 miles (32% beyond the direct distance) or Southwest Airlines via Phoenix (PHX), which adds about 650 miles (81% beyond the direct distance). Choose the connection with the best weather odds for your travel month and leave a comfortable layover; our layover guide explains how much time is realistic.
Best time to fly
Timing matters here. At DEN, ski season brings holiday peaks, and spring snowstorms can cause sudden cancellations. At SAT, spring and fall are comfortable; summer temperatures can top 100°F.
Ground transport
Getting to and from SAT
Rideshare and VIA buses reach downtown in about 15 minutes.
Getting to and from DEN
The A Line train reaches Union Station in about 37 minutes.
Booking tips
If you are flying to Denver for a vacation, compare the fare with bags included, since leisure travelers often check luggage. Our fare-type guide shows what low fares leave out.
Frequently asked questions
How long is the flight from San Antonio to Denver?
A typical SAT to DEN flight takes about 2 h 10 min, with a likely range of 1 h 50 min to 2 h 35 min. Actual time depends on wind, routing, aircraft and whether you connect.
How far is Denver from San Antonio by air?
The great-circle distance between SAT and DEN is about 800 miles (1,280 km).
Which airlines fly from San Antonio to Denver?
United Airlines and Southwest Airlines have a major presence at SAT or DEN, and service varies by season. Ask us to check current nonstop and connecting options.
What is the time difference between San Antonio and Denver?
Denver is 1 hour behind San Antonio on standard time. Daylight saving time can change the gap for part of the year.
Are there other airports near San Antonio?
Yes. Nearby alternatives include Austin (AUS). Comparing them can change both fare and travel time.
When is the best time to book SAT to DEN?
For leisure routes like this, book early for school holidays and peak seasons. Domestic fares are often competitive one to three months ahead, while international trips benefit from more lead time. Compare several dates, since fares are priced flight by flight.
Explore related routes
More flights involving Denver (DEN)
- Atlanta to DenverATL to DEN
- Austin to DenverAUS to DEN
- Baltimore to DenverBWI to DEN
- Chicago to DenverMDW to DEN
- Chicago to DenverORD to DEN
- Cleveland to DenverCLE to DEN
Last reviewed October 22, 2026. FlighTicketHub provides general information; confirm details with the airline before you travel.