Route guide
Cheap Flights from Denver to Philadelphia: Book Airline Tickets
- Distance
- about 1,550 mi
- Typical flight time
- 3 h 15 min – 4 h 15 min
- Airports
- 1 × 1
- Time difference
- 2 h ahead
This page covers the practical side of flying between Denver and Philadelphia: which airports to compare, how long the trip takes, and when it is busy. It works for either direction. For a price on your dates, ask a specialist.
Quick answer: Denver to Philadelphia is about 1,550 miles (2,490 km) and a typical flight takes 3 h 15 min to 4 h 15 min. Philadelphia is 2 hours ahead of Denver. Denver has 1 airport to compare and Philadelphia has 1.
Airport pairs to compare
Denver's airport lies on the plains northeast of the city, roughly 25 miles from downtown, so ground transport time matters. Philadelphia's airport is a hub with strong connecting traffic, and it is linked to Center City by regional rail.
| Pair | Departure airport | Arrival airport |
|---|---|---|
| DEN to PHL | Denver International | Philadelphia International |
About the airports
- DEN · Denver International
Sits roughly 25 miles northeast of downtown, with a commuter rail line to Union Station. - PHL · Philadelphia International
A hub airport with regional rail service to Center City.
Airlines with a major base at either end
- At Denver: United Airlines, Southwest Airlines
- At Philadelphia: American Airlines
Airlines with a base at one end often connect through their hub. A specialist can compare nonstop and connecting options on your dates.
When to go and what to expect
Denver
Ski season (roughly late November through April) and summer are the busiest periods. Winter storms can disrupt flights, and spring snow is not unusual.
Philadelphia
Spring and fall are the most comfortable. Summers are hot and humid, and winter storms can disrupt flights.
How long is Denver to Philadelphia?
At about 1,550 miles, Denver to Philadelphia is a long domestic-style flight of several hours. Meal options, seat choice and baggage rules matter more on a trip this long, so compare the full total rather than just the base fare.
Time zones and timing
Philadelphia is 2 hours ahead of Denver, so you land at a local time 2 hours later than departure time plus flight time would suggest. Plan your arrival day around local time at the destination.
Getting between the airport and town
Denver: The A Line commuter train runs from the airport to Union Station downtown. Shuttles and rental cars serve the mountains.
Philadelphia: SEPTA Regional Rail runs from the airport to Center City.
Planning ground transport too? See our car rental guide.
Good to know
- If you are heading to a ski area, allow extra time on mountain roads in winter, and watch the forecast before travel day.
- Because many passengers connect here, keep extra time between flights, especially in winter.
- Compare the total with bags included, not just the base fare. See baggage fees and taxes and fees.
Flying Philadelphia to Denver?
This route guide works in both directions. For other trips, see all flights from Denver or all flights from Philadelphia.
Frequently asked questions
How far is Denver from Philadelphia?
The straight-line distance between the main airports is about 1,550 miles (2,490 km). Routes can be longer in practice because of air traffic and weather.
How long is a flight from Denver to Philadelphia?
A typical scheduled flight takes roughly 3 h 15 min to 4 h 15 min in the air, depending on winds, the aircraft and the airports. Connecting itineraries take longer, and nonstop availability depends on the airline and dates.
Which airports can I use?
At Denver: DEN (Denver International). At Philadelphia: PHL (Philadelphia International). Ask for prices on more than one pairing.
Is there a time difference?
Philadelphia is 2 hours ahead of Denver.
When is the best time to fly from Denver to Philadelphia?
In Denver: Ski season (roughly late November through April) and summer are the busiest periods. Winter storms can disrupt flights, and spring snow is not unusual. In Philadelphia: Spring and fall are the most comfortable. Summers are hot and humid, and winter storms can disrupt flights. Fares are usually highest in the busy periods described for each city, so flexible dates can help.
Which airlines should I compare for Denver to Philadelphia?
Airlines with a major base at either end include United Airlines, Southwest Airlines and American Airlines. A specialist compares them with other carriers on your dates, since schedules and availability change.
Do you show fares on this page?
No. Fares change constantly, so we do not publish prices that might be out of date. A specialist checks live availability and confirms the full total, including taxes and bags, before you pay.
Route details updated October 18, 2026.