Direct (nonstop) flights from Denver to Alamosa
1 airline flys nonstop from Denver International (DEN) to San Luis Valley Regional Airport (ALS). It's 178 miles (287 km), about 55m in the air. Operated by Key Lime Air.
Key Lime Air
Route data last updated: May 26, 2026
Airlines with non-stop flights
Looking for the return flight?
ALS → DEN: Flights from Alamosa to DenverOther direct flights from Denver
Frequently Asked Questions
How long is the direct flight from Denver to Alamosa?
A nonstop flight from Denver (DEN) to Alamosa (ALS) takes approximately 0 hours and 55 minutes. The distance is 178 miles (287 km).
Which airlines fly nonstop from Denver to Alamosa?
Just Key Lime Air.
Is there a nonstop flight from Denver to Alamosa?
Yes. 1 airline: Key Lime Air.
How far is Denver from Alamosa?
The flight distance from Denver to Alamosa is 178 miles (287 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Washington DC.
What type of aircraft flies from Denver to Alamosa?
At 55m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Denver to Alamosa?
Roughly 33 kg CO2 per passenger one-way. That's about the same as driving 165 km.
Is the return flight from Alamosa to Denver also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Denver to Alamosa?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Denver International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.