Philadelphia (PHL) to Denver (DEN) flights
4 airlines fly nonstop from Philadelphia (PHL) to Denver (DEN): American Airlines, Frontier Airlines, Southwest Airlines and United Airlines. The two airports are 1,553 miles (2,500 km) apart. American Airlines is in oneworld and United Airlines is in Star Alliance. There are also 71 ways to fly it with one stop, through Pittsburgh, Omaha and Columbus and more.
Airlines flying nonstop from PHL to DEN
- American Airlinesoneworld · bookable with 9 programsWho books it
- Frontier AirlinesNot in an allianceWho books it
- Southwest AirlinesNot in an allianceWho books it
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book PHL to DEN with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- Alaska Atmos RewardsBooks American Airlines
- American AAdvantageBooks American Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- British Airways ClubBooks American Airlines
- Cathay Pacific Asia MilesBooks American Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- Finnair PlusBooks American Airlines
- Iberia ClubBooks American Airlines
- JAL Mileage BankBooks American Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Qantas Frequent FlyerBooks American Airlines
- Qatar Airways Privilege ClubBooks American Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
PHL to DEN with one stop
71 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Pittsburgh (PIT)American Airlines, then United Airlines and Southwest Airlines
- Via Omaha (OMA)American Airlines, then Frontier Airlines, United Airlines and 1 more
- Via Columbus (CMH)American Airlines, then Frontier Airlines, United Airlines and 1 more
- Via Des Moines (DSM)American Airlines and Allegiant Air, then Frontier Airlines, United Airlines and 1 more
- Via Dayton (DAY)American Airlines, then United Airlines
- Via Indianapolis (IND)American Airlines, then Frontier Airlines, United Airlines and 1 more
- Via Cleveland (CLE)American Airlines, then Frontier Airlines, United Airlines and 1 more
- Via Chicago (MDW)Southwest Airlines the whole way
- Via Chicago (ORD)American Airlines, United Airlines and 1 more the whole way
- Via Kansas City (MCI)American Airlines the whole way+1
- Via Detroit (DTW)Delta Air Lines and Frontier Airlines the whole way
+1 - Via Cincinnati (CVG)American Airlines, then Frontier Airlines, United Airlines and 1 more
- Via Baltimore (BWI)Southwest Airlines the whole way
- Via Saint Louis (STL)Southwest Airlines the whole way
- Via Milwaukee (MKE)American Airlines, then United Airlines and Southwest Airlines
PHL to DEN: common questions
Which airlines fly nonstop from PHL to DEN?
American Airlines (oneworld), Frontier Airlines, Southwest Airlines and United Airlines (Star Alliance) fly nonstop from Philadelphia (PHL) to Denver (DEN).
How far is Philadelphia from Denver by plane?
Philadelphia (PHL) and Denver (DEN) are 1,553 miles (2,500 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book PHL to DEN award flights?
22 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, Alaska Atmos Rewards, American AAdvantage, ANA Mileage Club, Avianca LifeMiles, British Airways Club, Cathay Pacific Asia Miles and 14 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does PHL to DEN cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for PHL to DEN with taxes and fees.
Where can I connect between Philadelphia and Denver?
The most direct connections are through Pittsburgh (PIT), Omaha (OMA), Columbus (CMH), Des Moines (DSM) and Dayton (DAY). On 27 of them the same airline flies both flights, for example Southwest Airlines through Chicago.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.