Cheapest€204.28
- Frontier Airlines FA682608:404h 12m12:52Philadelphia ILGDenver DEN
Door to door 7h 22mCO2 642.1 kgChanges 0Fixed, no changes
Philadelphia to Denver flight
Flights from Philadelphia to Denver start at €248.53 and take 6h 51m at their fastest.
Check dates and fares
Fares and seats move by the day. Price Philadelphia to Denver on the date you actually want, rather than on the date this page was built.
The Flights from Philadelphia to Denver starts at €248.53 and takes 6h 51m door to door, run by 4 operators over 2,610 km, with around 32 departures a day. Fares bottom out about 30 days before departure.
- 6h 51mDoor to door
- 3h 41mMoving
- €248.53 to €438.51From
- 06:18 to 20:53First and last departure
- 32Per day
- 642.1 kgCO2
First and last are taken from the services we sell on 29 September 2026. The return direction keeps its own timetable and is not these times reversed.
€248.53 to €438.51 for one passenger across the 14 departure dates priced here. The low end is one day, not every day. Worked out from this corridor rather than held for anybody. The operator sets the price on the day.
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €438.51Mon14
- about €377.15Tue15
- about €396.62Wed16
- about €413.14Thu17
- about €377.74Fri18
- about €397.21Sat19
- about €364.76Sun20
- about €248.53Mon21
- about €253.25Tue22
- about €261.51Wed23
- about €329.36Thu24
- about €303.99Fri25
- about €310.48Sat26
- about €288.06Sun27
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The cheapest and the fastest on 29 September 2026
Fastest€293.96
- Frontier Airlines FA789618:013h 41m21:42Philadelphia ILGDenver DEN
Door to door 6h 51mCO2 642.1 kgChanges 0Fixed, no changes
Airlines
| Operator | From |
|---|---|
 American Airlines | €210.77 |
 Frontier Airlines | €204.28 |
| United Airlines | €207.23 |
 Southwest Airlines | €210.77 |
The flight gets you into Denver. It does not get you a bed, and neither do we.
A room in Denver for the night the flight gets in
Sort by distance from 38th & Blake and you can see which places are ten minutes on foot and which are not.
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Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book Philadelphia to Denver
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €253.2590 days
- €207.2360 days
- €178.9145 days
- €167.1130 days
- €232.6021 days
- €288.0614 days
- €364.767 days
- €396.623 days
- €438.511 days
- Cheapest lead time
- Fares bottom out around 30 days ahead, at €167.11.
- How much it moves
- The gap between the cheapest and dearest lead time is 162 percent. The dearest point is €438.51, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 30 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €288.06Sun
- €248.53Mon
- €253.25Tue
- €261.51Wed
- €329.36Thu
- €303.99Fri
- €310.48Sat
Where you leave from and where you arrive
Philadelphia
Air
- PHL
- ILG
Denver
Air
- DEN
What the journey actually looks like
- How far it really runs
- The route covers 2,610 km against 2,534 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- First and last departure
- The first service of the day leaves Philadelphia at 06:18 and the last at 20:53, across 32 departures The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Philadelphia to Denver
The questions people actually ask about this journey, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Philadelphia to Denver take?
The Flight from Philadelphia to Denver takes 6h 51m door to door, of which 3h 41m is spent moving. The route runs 2,610 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Philadelphia to Denver cost?
The Flight from Philadelphia to Denver starts at €248.53 for one passenger, as of 13 September 2026. A typical fare is €244.70. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Philadelphia to Denver?
4 operators run the Flight from Philadelphia to Denver: American Airlines, Frontier Airlines, United Airlines, Southwest Airlines. Between them they file around 32 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Philadelphia to Denver use?
The Flight from Philadelphia to Denver leaves from Philadelphia ILG and arrives at Denver DEN. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Philadelphia to Denver?
Fares for the Flight from Philadelphia to Denver bottom out around 30 days ahead, at €167.11. The gap between the cheapest and dearest lead time across the window is 162 percent, measured on 13 September 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Philadelphia to Denver produce?
The Flight from Philadelphia to Denver produces about 642.1 kg of CO2 per passenger over 2610 km, which works out at roughly 246 grams per passenger kilometre. That figure is for the whole journey and for one traveller, not for the vehicle.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Philadelphia to Denver on 13 September 2026: 2610 km of route against 2534 km in a straight line, 32 services a day, 4 operators a cheapest fare of €248.53, and 6h 51m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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