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Denver → Philadelphia

Dec 21, 2026 · return Dec 24, 2026

DEN → PHL1 adulteconomyRound trip

12 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 – Thu, Dec 24

Frontier Airlines
11:31 pmDEN
3h 40m
Nonstop
5:11 am+1PHL
Frontier Airlines
8:19 pmPHL
4h 17m
Nonstop
10:36 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

Southwest Airlines
7:05 pmDEN
3h 30m
Nonstop
12:35 am+1PHL
Southwest Airlines
5:00 amPHL
4h 15m
Nonstop
7:15 amDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

American Airlines
2:45 pmDEN
3h 33m
Nonstop
8:18 pmPHL
American Airlines
9:05 amPHL
4h 30m
Nonstop
11:35 amDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

United Airlines
2:00 pmDEN
3h 31m
Nonstop
7:31 pmPHL
United Airlines
9:55 amPHL
4h 20m
Nonstop
12:15 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

Southwest Airlines
5:30 pmDEN
3h 20m
Nonstop
10:50 pmPHL
Southwest Airlines
5:15 pmPHL
4h 10m
Nonstop
7:25 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

United Airlines
6:10 pmDEN
3h 31m
Nonstop
11:41 pmPHL
United Airlines
9:55 amPHL
4h 20m
Nonstop
12:15 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Thu, Dec 24

Frontier Airlines
11:59 pmDEN
3h 26m
Nonstop
5:25 am+1PHL
Frontier Airlines
4:38 pmPHL
7h 19m
ATL · 1h 10m
9:57 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

Frontier Airlines
8:59 amDEN
5h 44m
DTW · 1h 13m
4:43 pmPHL
Frontier Airlines
4:38 pmPHL
7h 19m
ATL · 1h 10m
9:57 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

Southwest Airlines
2:25 pmDEN
5h 45m
BNA · 1h 20m
10:10 pmPHL
Southwest Airlines
2:45 pmPHL
6h 25m
STL · 1h 25m
7:10 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

Southwest Airlines
3:40 pmDEN
5h 40m
STL · 1h 35m
11:20 pmPHL
Southwest Airlines
2:45 pmPHL
6h 25m
STL · 1h 25m
7:10 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

Southwest Airlines
6:45 pmDEN
3h 25m
Nonstop
12:10 am+1PHL
Southwest Airlines
2:45 pmPHL
6h 25m
STL · 1h 25m
7:10 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Thu, Dec 24

United Airlines
4:35 pmDEN
5h 59m
ORD · 1h 5m
12:34 am+1PHL
United Airlines
9:55 amPHL
4h 20m
Nonstop
12:15 pmDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ PHL

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 → 2026-12-24Frontier AirlinesF91776 / F91876$234.002026-10-29T01:04:33Z
2026-12-21 → 2026-12-24Southwest AirlinesWN1622 / WN3367$409.502026-10-29T01:04:33Z
2026-12-21 → 2026-12-24American AirlinesAA1121 / AA1313$429.002026-10-29T01:04:33Z
2026-12-21 → 2026-12-24United AirlinesUA2787 / UA1281$442.002026-10-29T01:04:33Z
2026-12-21 → 2026-12-24Southwest AirlinesWN1622 / WN1270$409.502026-10-29T01:04:33Z
2026-12-21 → 2026-12-24United AirlinesUA287 / UA1281$442.002026-10-29T01:04:33Z
2026-12-21 → 2026-12-24Frontier AirlinesF91776 / F91101 + F93599$247.002026-10-29T01:04:33Z
2026-12-21 → 2026-12-24Frontier AirlinesF93566 + F92022 / F91101 + F93599$260.002026-10-29T01:04:33Z
2026-12-21 → 2026-12-24Southwest AirlinesWN1573 + WN2825 / WN1424 + WN4143$396.502026-10-29T01:04:33Z
2026-12-21 → 2026-12-24Southwest AirlinesWN2170 + WN4923 / WN1424 + WN4143$396.502026-10-29T01:04:33Z
2026-12-21 → 2026-12-24Southwest AirlinesWN1622 / WN1424 + WN4143$403.002026-10-29T01:04:33Z
2026-12-21 → 2026-12-24United AirlinesUA675 + UA1744 / UA1281$429.002026-10-29T01:04:33Z

2026-12-21 → 2026-12-24 · $234.00

  • Frontier Airlines F91776: DEN 2026-12-21 23:31:00 → PHL 2026-12-22 05:11:00; nonstop; 220 minutes. Local airport times.
  • Frontier Airlines F91876: PHL 2026-12-24 20:19:00 → DEN 2026-12-24 22:36:00; nonstop; 257 minutes. Local airport times.

2026-12-21 → 2026-12-24 · $409.50

  • Southwest Airlines WN1622: DEN 2026-12-21 19:05:00 → PHL 2026-12-22 00:35:00; nonstop; 210 minutes. Local airport times.
  • Southwest Airlines WN3367: PHL 2026-12-24 05:00:00 → DEN 2026-12-24 07:15:00; nonstop; 255 minutes. Local airport times.

2026-12-21 → 2026-12-24 · $429.00

  • American Airlines AA1121: DEN 2026-12-21 14:45:00 → PHL 2026-12-21 20:18:00; nonstop; 213 minutes. Local airport times.
  • American Airlines AA1313: PHL 2026-12-24 09:05:00 → DEN 2026-12-24 11:35:00; nonstop; 270 minutes. Local airport times.

2026-12-21 → 2026-12-24 · $442.00

  • United Airlines UA2787: DEN 2026-12-21 14:00:00 → PHL 2026-12-21 19:31:00; nonstop; 211 minutes. Local airport times.
  • United Airlines UA1281: PHL 2026-12-24 09:55:00 → DEN 2026-12-24 12:15:00; nonstop; 260 minutes. Local airport times.

2026-12-21 → 2026-12-24 · $409.50

  • Southwest Airlines WN1622: DEN 2026-12-21 17:30:00 → PHL 2026-12-21 22:50:00; nonstop; 200 minutes. Local airport times.
  • Southwest Airlines WN1270: PHL 2026-12-24 17:15:00 → DEN 2026-12-24 19:25:00; nonstop; 250 minutes. Local airport times.

2026-12-21 → 2026-12-24 · $442.00

  • United Airlines UA287: DEN 2026-12-21 18:10:00 → PHL 2026-12-21 23:41:00; nonstop; 211 minutes. Local airport times.
  • United Airlines UA1281: PHL 2026-12-24 09:55:00 → DEN 2026-12-24 12:15:00; nonstop; 260 minutes. Local airport times.

2026-12-21 → 2026-12-24 · $247.00

  • Frontier Airlines F91776: DEN 2026-12-21 23:59:00 → PHL 2026-12-22 05:25:00; nonstop; 206 minutes. Local airport times.
  • Frontier Airlines F91101 / F93599: PHL 2026-12-24 16:38:00 → DEN 2026-12-24 21:57:00; 1 stop(s) via ATL; 439 minutes. Local airport times.
    • F91101: PHL 2026-12-24 16:38:00 → ATL 2026-12-24 19:04:00; layover at ATL: 70 minutes.
    • F93599: ATL 2026-12-24 20:14:00 → DEN 2026-12-24 21:57:00.

2026-12-21 → 2026-12-24 · $260.00

  • Frontier Airlines F93566 / F92022: DEN 2026-12-21 08:59:00 → PHL 2026-12-21 16:43:00; 1 stop(s) via DTW; 344 minutes. Local airport times.
    • F93566: DEN 2026-12-21 08:59:00 → DTW 2026-12-21 13:48:00; layover at DTW: 73 minutes.
    • F92022: DTW 2026-12-21 15:01:00 → PHL 2026-12-21 16:43:00.
  • Frontier Airlines F91101 / F93599: PHL 2026-12-24 16:38:00 → DEN 2026-12-24 21:57:00; 1 stop(s) via ATL; 439 minutes. Local airport times.
    • F91101: PHL 2026-12-24 16:38:00 → ATL 2026-12-24 19:04:00; layover at ATL: 70 minutes.
    • F93599: ATL 2026-12-24 20:14:00 → DEN 2026-12-24 21:57:00.

2026-12-21 → 2026-12-24 · $396.50

  • Southwest Airlines WN1573 / WN2825: DEN 2026-12-21 14:25:00 → PHL 2026-12-21 22:10:00; 1 stop(s) via BNA; 345 minutes. Local airport times.
    • WN1573: DEN 2026-12-21 14:25:00 → BNA 2026-12-21 17:45:00; layover at BNA: 80 minutes.
    • WN2825: BNA 2026-12-21 19:05:00 → PHL 2026-12-21 22:10:00.
  • Southwest Airlines WN1424 / WN4143: PHL 2026-12-24 14:45:00 → DEN 2026-12-24 19:10:00; 1 stop(s) via STL; 385 minutes. Local airport times.
    • WN1424: PHL 2026-12-24 14:45:00 → STL 2026-12-24 16:20:00; layover at STL: 85 minutes.
    • WN4143: STL 2026-12-24 17:45:00 → DEN 2026-12-24 19:10:00.

2026-12-21 → 2026-12-24 · $396.50

  • Southwest Airlines WN2170 / WN4923: DEN 2026-12-21 15:40:00 → PHL 2026-12-21 23:20:00; 1 stop(s) via STL; 340 minutes. Local airport times.
    • WN2170: DEN 2026-12-21 15:40:00 → STL 2026-12-21 18:35:00; layover at STL: 95 minutes.
    • WN4923: STL 2026-12-21 20:10:00 → PHL 2026-12-21 23:20:00.
  • Southwest Airlines WN1424 / WN4143: PHL 2026-12-24 14:45:00 → DEN 2026-12-24 19:10:00; 1 stop(s) via STL; 385 minutes. Local airport times.
    • WN1424: PHL 2026-12-24 14:45:00 → STL 2026-12-24 16:20:00; layover at STL: 85 minutes.
    • WN4143: STL 2026-12-24 17:45:00 → DEN 2026-12-24 19:10:00.

2026-12-21 → 2026-12-24 · $403.00

  • Southwest Airlines WN1622: DEN 2026-12-21 18:45:00 → PHL 2026-12-22 00:10:00; nonstop; 205 minutes. Local airport times.
  • Southwest Airlines WN1424 / WN4143: PHL 2026-12-24 14:45:00 → DEN 2026-12-24 19:10:00; 1 stop(s) via STL; 385 minutes. Local airport times.
    • WN1424: PHL 2026-12-24 14:45:00 → STL 2026-12-24 16:20:00; layover at STL: 85 minutes.
    • WN4143: STL 2026-12-24 17:45:00 → DEN 2026-12-24 19:10:00.

2026-12-21 → 2026-12-24 · $429.00

  • United Airlines UA675 / UA1744: DEN 2026-12-21 16:35:00 → PHL 2026-12-22 00:34:00; 1 stop(s) via ORD; 359 minutes. Local airport times.
    • UA675: DEN 2026-12-21 16:35:00 → ORD 2026-12-21 20:15:00; layover at ORD: 65 minutes.
    • UA1744: ORD 2026-12-21 21:20:00 → PHL 2026-12-22 00:34:00.
  • United Airlines UA1281: PHL 2026-12-24 09:55:00 → DEN 2026-12-24 12:15:00; nonstop; 260 minutes. Local airport times.

More dates for this route