Direct (nonstop) flights from Philadelphia to Denver
4 airlines fly nonstop from Philadelphia International Airport (PHL) to Denver International (DEN). It's 1,557 miles (2,506 km), about 4h 20m in the air. Operated by American Airlines, Frontier Airlines, United Airlines and others.
American Airlines
Frontier Airlines
United Airlines
Southwest Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AA
American Airlines
F9
Frontier Airlines
UA
United Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Philadelphia to Denver with one stop · direct emits 263 kg CO₂ per passenger
Looking for the return flight?
DEN → PHL: Flights from Denver to PhiladelphiaOther direct flights from Philadelphia
Direct flights from Denver (DEN)
Frequently Asked Questions
How long is the direct flight from Philadelphia to Denver?
A nonstop flight from Philadelphia (PHL) to Denver (DEN) takes approximately 4 hours and 20 minutes. The distance is 1,557 miles (2,506 km).
Which airlines fly nonstop from Philadelphia to Denver?
4 airlines: American Airlines, Frontier Airlines, United Airlines, Southwest Airlines.
Is there a nonstop flight from Philadelphia to Denver?
Yes. 4 airlines: American Airlines, Frontier Airlines, United Airlines, Southwest Airlines.
How far is Philadelphia from Denver?
The flight distance from Philadelphia to Denver is 1,557 miles (2,506 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.
What type of aircraft flies from Philadelphia to Denver?
At 4h 20m, 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 Philadelphia to Denver?
Roughly 263 kg CO2 per passenger one-way. That's about the same as driving 1,315 km.
Is the return flight from Denver to Philadelphia 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 Philadelphia to Denver?
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 Philadelphia International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.