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Route overview: Denver to Philadelphia (PHL) flight deals

Denver → Philadelphia

Dec 14, 2026 · return Dec 19, 2026

DEN → PHL1 adulteconomyRound trip

12 flight options · 5 airlines

Nonstop flights

Mon, Dec 14 – Sat, Dec 19

Frontier Airlines
11:59 pmDEN
3h 26m
Nonstop
5:25 am+1PHL
Frontier Airlines
8:19 pmPHL
4h 17m
Nonstop
10:36 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

Southwest Airlines
6:45 pmDEN
3h 25m
Nonstop
12:10 am+1PHL
Southwest Airlines
5:15 pmPHL
4h 10m
Nonstop
7:25 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

American Airlines
2:45 pmDEN
3h 33m
Nonstop
8:18 pmPHL
American Airlines
8:55 amPHL
4h 26m
Nonstop
11:21 amDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

United Airlines
2:00 pmDEN
3h 31m
Nonstop
7:31 pmPHL
United Airlines
3:25 pmPHL
4h 20m
Nonstop
5:45 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

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

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

United Airlines
6:10 pmDEN
3h 31m
Nonstop
11:41 pmPHL
United Airlines
3:25 pmPHL
4h 20m
Nonstop
5:45 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 14 – Sat, Dec 19

Delta Air Lines
10:46 amDEN
5h 46m
ATL · 1h 1m
6:32 pmPHL
Delta Air Lines
5:34 amPHL
6h 29m
MSP · 1h 15m
10:03 amDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

Frontier Airlines
8:59 amDEN
5h 44m
DTW · 1h 13m
4:43 pmPHL
Frontier Airlines
8:19 pmPHL
4h 17m
Nonstop
10:36 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

Frontier Airlines
11:31 pmDEN
3h 40m
Nonstop
5:11 am+1PHL
Frontier Airlines
4:38 pmPHL
7h 19m
ATL · 1h 10m
9:57 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

Southwest Airlines
3:40 pmDEN
5h 40m
STL · 1h 35m
11:20 pmPHL
Southwest Airlines
5:15 pmPHL
4h 10m
Nonstop
7:25 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

Southwest Airlines
2:25 pmDEN
5h 45m
BNA · 1h 20m
10:10 pmPHL
Southwest Airlines
5:15 pmPHL
4h 10m
Nonstop
7:25 pmDEN

Round-trip total · 1 adult · Taxes included

Mon, Dec 14 – Sat, Dec 19

United Airlines
4:35 pmDEN
5h 59m
ORD · 1h 5m
12:34 am+1PHL
United Airlines
3:25 pmPHL
4h 20m
Nonstop
5:45 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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Explore this route

All dates for this routeDec 13, 2026 → Dec 18, 2026Dec 15, 2026 → Dec 20, 2026
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Denver to Philadelphia (PHL) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-14 → 2026-12-19Frontier AirlinesF91776 / F91876$207.002026-10-29T01:04:33Z
2026-12-14 → 2026-12-19Southwest AirlinesWN1622 / WN1270$362.252026-10-29T01:04:33Z
2026-12-14 → 2026-12-19American AirlinesAA1121 / AA1313$379.502026-10-29T01:04:33Z
2026-12-14 → 2026-12-19United AirlinesUA2787 / UA2411$391.002026-10-29T01:04:33Z
2026-12-14 → 2026-12-19Delta Air LinesDL346 + DL1329 / DL2791 + DL2849$402.502026-10-29T01:04:33Z
2026-12-14 → 2026-12-19Southwest AirlinesWN1747 / WN1270$362.252026-10-29T01:04:33Z
2026-12-14 → 2026-12-19United AirlinesUA287 / UA2411$391.002026-10-29T01:04:33Z
2026-12-14 → 2026-12-19Frontier AirlinesF93566 + F92022 / F91876$217.002026-10-29T01:04:33Z
2026-12-14 → 2026-12-19Frontier AirlinesF91776 / F91101 + F93599$220.002026-10-29T01:04:33Z
2026-12-14 → 2026-12-19Southwest AirlinesWN2170 + WN4923 / WN1270$357.252026-10-29T01:04:33Z
2026-12-14 → 2026-12-19Southwest AirlinesWN1573 + WN2825 / WN1270$357.252026-10-29T01:04:33Z
2026-12-14 → 2026-12-19United AirlinesUA675 + UA1744 / UA2411$381.002026-10-29T01:04:33Z

2026-12-14 → 2026-12-19 · $207.00

  • Frontier Airlines F91776: DEN 2026-12-14 23:59:00 → PHL 2026-12-15 05:25:00; nonstop; 206 minutes. Local airport times.
  • Frontier Airlines F91876: PHL 2026-12-19 20:19:00 → DEN 2026-12-19 22:36:00; nonstop; 257 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $362.25

  • Southwest Airlines WN1622: DEN 2026-12-14 18:45:00 → PHL 2026-12-15 00:10:00; nonstop; 205 minutes. Local airport times.
  • Southwest Airlines WN1270: PHL 2026-12-19 17:15:00 → DEN 2026-12-19 19:25:00; nonstop; 250 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $379.50

  • American Airlines AA1121: DEN 2026-12-14 14:45:00 → PHL 2026-12-14 20:18:00; nonstop; 213 minutes. Local airport times.
  • American Airlines AA1313: PHL 2026-12-19 08:55:00 → DEN 2026-12-19 11:21:00; nonstop; 266 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $391.00

  • United Airlines UA2787: DEN 2026-12-14 14:00:00 → PHL 2026-12-14 19:31:00; nonstop; 211 minutes. Local airport times.
  • United Airlines UA2411: PHL 2026-12-19 15:25:00 → DEN 2026-12-19 17:45:00; nonstop; 260 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $402.50

  • Delta Air Lines DL346 / DL1329: DEN 2026-12-14 10:46:00 → PHL 2026-12-14 18:32:00; 1 stop(s) via ATL; 346 minutes. Local airport times.
    • DL346: DEN 2026-12-14 10:46:00 → ATL 2026-12-14 15:33:00; layover at ATL: 61 minutes.
    • DL1329: ATL 2026-12-14 16:34:00 → PHL 2026-12-14 18:32:00.
  • Delta Air Lines DL2791 / DL2849: PHL 2026-12-19 05:34:00 → DEN 2026-12-19 10:03:00; 1 stop(s) via MSP; 389 minutes. Local airport times.
    • DL2791: PHL 2026-12-19 05:34:00 → MSP 2026-12-19 07:35:00; layover at MSP: 75 minutes.
    • DL2849: MSP 2026-12-19 08:50:00 → DEN 2026-12-19 10:03:00.

2026-12-14 → 2026-12-19 · $362.25

  • Southwest Airlines WN1747: DEN 2026-12-14 10:50:00 → PHL 2026-12-14 16:15:00; nonstop; 205 minutes. Local airport times.
  • Southwest Airlines WN1270: PHL 2026-12-19 17:15:00 → DEN 2026-12-19 19:25:00; nonstop; 250 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $391.00

  • United Airlines UA287: DEN 2026-12-14 18:10:00 → PHL 2026-12-14 23:41:00; nonstop; 211 minutes. Local airport times.
  • United Airlines UA2411: PHL 2026-12-19 15:25:00 → DEN 2026-12-19 17:45:00; nonstop; 260 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $217.00

  • Frontier Airlines F93566 / F92022: DEN 2026-12-14 08:59:00 → PHL 2026-12-14 16:43:00; 1 stop(s) via DTW; 344 minutes. Local airport times.
    • F93566: DEN 2026-12-14 08:59:00 → DTW 2026-12-14 13:48:00; layover at DTW: 73 minutes.
    • F92022: DTW 2026-12-14 15:01:00 → PHL 2026-12-14 16:43:00.
  • Frontier Airlines F91876: PHL 2026-12-19 20:19:00 → DEN 2026-12-19 22:36:00; nonstop; 257 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $220.00

  • Frontier Airlines F91776: DEN 2026-12-14 23:31:00 → PHL 2026-12-15 05:11:00; nonstop; 220 minutes. Local airport times.
  • Frontier Airlines F91101 / F93599: PHL 2026-12-19 16:38:00 → DEN 2026-12-19 21:57:00; 1 stop(s) via ATL; 439 minutes. Local airport times.
    • F91101: PHL 2026-12-19 16:38:00 → ATL 2026-12-19 19:04:00; layover at ATL: 70 minutes.
    • F93599: ATL 2026-12-19 20:14:00 → DEN 2026-12-19 21:57:00.

2026-12-14 → 2026-12-19 · $357.25

  • Southwest Airlines WN2170 / WN4923: DEN 2026-12-14 15:40:00 → PHL 2026-12-14 23:20:00; 1 stop(s) via STL; 340 minutes. Local airport times.
    • WN2170: DEN 2026-12-14 15:40:00 → STL 2026-12-14 18:35:00; layover at STL: 95 minutes.
    • WN4923: STL 2026-12-14 20:10:00 → PHL 2026-12-14 23:20:00.
  • Southwest Airlines WN1270: PHL 2026-12-19 17:15:00 → DEN 2026-12-19 19:25:00; nonstop; 250 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $357.25

  • Southwest Airlines WN1573 / WN2825: DEN 2026-12-14 14:25:00 → PHL 2026-12-14 22:10:00; 1 stop(s) via BNA; 345 minutes. Local airport times.
    • WN1573: DEN 2026-12-14 14:25:00 → BNA 2026-12-14 17:45:00; layover at BNA: 80 minutes.
    • WN2825: BNA 2026-12-14 19:05:00 → PHL 2026-12-14 22:10:00.
  • Southwest Airlines WN1270: PHL 2026-12-19 17:15:00 → DEN 2026-12-19 19:25:00; nonstop; 250 minutes. Local airport times.

2026-12-14 → 2026-12-19 · $381.00

  • United Airlines UA675 / UA1744: DEN 2026-12-14 16:35:00 → PHL 2026-12-15 00:34:00; 1 stop(s) via ORD; 359 minutes. Local airport times.
    • UA675: DEN 2026-12-14 16:35:00 → ORD 2026-12-14 20:15:00; layover at ORD: 65 minutes.
    • UA1744: ORD 2026-12-14 21:20:00 → PHL 2026-12-15 00:34:00.
  • United Airlines UA2411: PHL 2026-12-19 15:25:00 → DEN 2026-12-19 17:45:00; nonstop; 260 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Denver (DEN) to Philadelphia (PHL) · Dec 14, 2026 · return Dec 19, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
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  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.