Direct (nonstop) flights from Denver to Philadelphia
4 airlines fly nonstop from Denver International (DEN) to Philadelphia International Airport (PHL). It's 1,557 miles (2,506 km), about 3h 35m 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 Denver to Philadelphia with one stop · direct emits 263 kg CO₂ per passenger
Looking for the return flight?
PHL → DEN: Flights from Philadelphia to DenverOther direct flights from Denver
Direct flights from Philadelphia (PHL)
Frequently Asked Questions
How long is the direct flight from Denver to Philadelphia?
A nonstop flight from Denver (DEN) to Philadelphia (PHL) takes approximately 3 hours and 35 minutes. The distance is 1,557 miles (2,506 km).
Which airlines fly nonstop from Denver to Philadelphia?
4 airlines: American Airlines, Frontier Airlines, United Airlines, Southwest Airlines.
Is there a nonstop flight from Denver to Philadelphia?
Yes. 4 airlines: American Airlines, Frontier Airlines, United Airlines, Southwest Airlines.
How far is Denver from Philadelphia?
The flight distance from Denver to Philadelphia 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 Denver to Philadelphia?
At 3h 35m, 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 Philadelphia?
Roughly 263 kg CO2 per passenger one-way. That's about the same as driving 1,315 km.
Is the return flight from Philadelphia 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 Philadelphia?
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.