San Antonio to Boulder flights
Boulder lies 1,330 km (826 mi) north-west of San Antonio, -1 h on the clock. What the numbers say about getting there, and where to book.
A nonstop flight would take about 2 h 27 min gate to gate, based on the distance and typical cruise speed with taxi and climb allowed for; connecting itineraries add the layover on top.
| San Antonio | Boulder | |
|---|---|---|
| Country | United States | United States |
| Population | 1.5 million | 106,803 |
| Elevation | 202 m (663 ft) | 1,630 m (5,348 ft) |
| Time now | UTC-5 (America/Chicago) | UTC-6 (America/Denver) |
| Nearest large airport | SAT, 12 km out | DEN, 54 km out |
| Postal codes | 78201–78299 | 80301–80314 |
Clocks in Boulder are 1 h behind San Antonio right now, so a 2 h 27 min journey lands only 1 h 27 min later by the destination clock.
Airports at each end
Leaving San Antonio
San Antonio is served by one airport with scheduled flights. The closest large one is San Antonio International Airport (SAT), 12 km (7 mi) from the centre, with a longest runway of 8,505 ft, which limits it to short and medium-haul aircraft.
Arriving in Boulder
Boulder is served by 2 airports with scheduled flights within 100 km. The closest large one is Denver International Airport (DEN), 54 km (34 mi) from the centre, whose 16,000-ft runway is long enough for long-haul wide-body aircraft. The alternatives are Rocky Mountain Metropolitan Airport (BJC, 18 km).
| Airport | Code | From centre | Longest runway | Elevation |
|---|---|---|---|---|
| Denver International Airport | DEN | 54 km (34 mi) | 16,000 ft | 5,431 ft |
| Rocky Mountain Metropolitan Airport (regional) | BJC | 18 km (11 mi) | 9,000 ft | 5,673 ft |
Book a flight to Boulder
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Staying in Boulder
Live rooms and prices for Boulder are in the search below.
Book a hotel in Boulder
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Common questions
How far is Boulder from San Antonio?
1,330 km (826 mi) in a straight line, north-west of San Antonio.
How long does it take to get from San Antonio to Boulder by air?
About 2 h 27 min, estimated from distance and typical speeds for a nonstop flight. Timetables and traffic decide the real figure.
Is there a time difference between San Antonio and Boulder?
Boulder is 1 h behind at the moment (America/Denver against America/Chicago).
Which airports are used for San Antonio to Boulder flights?
Typically San Antonio International Airport (SAT) to Denver International Airport (DEN); Boulder also has BJC.
Where these facts come from
- GeoNames (CC BY 4.0): population, elevation, time zone, postal codes
- Wikidata (CC0): area, sister cities, visitor numbers, heritage listings, stations and ports
- OurAirports (public domain): airports, runways
- Natural Earth (public domain): map outlines
Data compiled 14 September 2026. Hotel and hostel figures are from our booking partner’s catalogue on that date. Journey times on this page are estimates from distance, not timetables; check the operator before you rely on one.