Direct (nonstop) flights from Denver to Tucson
3 airlines fly nonstop from Denver International (DEN) to Tucson International (TUS). It's 638 miles (1,026 km), about 2h 2m in the air. Operated by Frontier Airlines, United Airlines, Southwest Airlines.
Frontier Airlines
United Airlines
Southwest Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
F9
Frontier Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Denver to Tucson with one stop · direct emits 118 kg CO₂ per passenger
Looking for the return flight?
TUS → DEN: Flights from Tucson to DenverOther direct flights from Denver
Direct flights from Tucson (TUS)
Frequently Asked Questions
How long is the direct flight from Denver to Tucson?
A nonstop flight from Denver (DEN) to Tucson (TUS) takes approximately 2 hours and 2 minutes. The distance is 638 miles (1,026 km).
Which airlines fly nonstop from Denver to Tucson?
3 airlines: Frontier Airlines, United Airlines, Southwest Airlines.
Is there a nonstop flight from Denver to Tucson?
Yes. 3 airlines: Frontier Airlines, United Airlines, Southwest Airlines.
How far is Denver from Tucson?
The flight distance from Denver to Tucson is 638 miles (1,026 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as the length of Italy.
What type of aircraft flies from Denver to Tucson?
At 2h 2m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Denver to Tucson?
Roughly 118 kg CO2 per passenger one-way. That's about the same as driving 590 km.
Is the return flight from Tucson 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 Tucson?
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.