Denver (DEN) to Philadelphia (PHL), Dec 18–20, 2026: from $95 one way

Denver (DEN) to Philadelphia (PHL), Dec 18–20, 2026: from $95 one way on Axel, checked Oct 29, 2026. Lowest published fare: $95 one way, Axel-exclusive, Frontier Airlines, nonstop, Dec 18, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Route overview: Denver to Philadelphia (PHL) flight deals

2026-12-18 · one way · Axel-exclusive $95.00

• Frontier Airlines F91776: DEN 2026-12-18 23:31:00 → PHL 2026-12-19 05:11:00; nonstop; 220 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $165.00

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

2026-12-18 · one way · Axel-exclusive $175.00

• American Airlines AA1121: DEN 2026-12-18 14:45:00 → PHL 2026-12-18 20:18:00; nonstop; 213 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $180.00

• United Airlines UA2049: DEN 2026-12-18 14:00:00 → PHL 2026-12-18 19:31:00; nonstop; 211 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $185.00

• Delta Air Lines DL346 / DL1329: DEN 2026-12-18 10:46:00 → PHL 2026-12-18 18:32:00; 1 stop(s) via ATL; 346 minutes. Local airport times.
  • DL346: DEN 2026-12-18 10:46:00 → ATL 2026-12-18 15:33:00; layover at ATL: 61 minutes.
  • DL1329: ATL 2026-12-18 16:34:00 → PHL 2026-12-18 18:32:00.

2026-12-19 · one way · Axel-exclusive $123.50

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

2026-12-20 · one way · Axel-exclusive $123.50

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

2026-12-18 · one way · Axel-exclusive $165.00

• Southwest Airlines WN1747: DEN 2026-12-18 10:45:00 → PHL 2026-12-18 16:10:00; nonstop; 205 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $180.00

• United Airlines UA225: DEN 2026-12-18 10:15:00 → PHL 2026-12-18 15:51:00; nonstop; 216 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $214.50

• Southwest Airlines WN1010: DEN 2026-12-19 19:30:00 → PHL 2026-12-20 00:55:00; nonstop; 205 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $214.50

• Southwest Airlines WN1747: DEN 2026-12-20 10:45:00 → PHL 2026-12-20 16:10:00; nonstop; 205 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $214.50

• Southwest Airlines WN1622: DEN 2026-12-20 18:45:00 → PHL 2026-12-21 00:10:00; nonstop; 205 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $214.50

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

2026-12-19 · one way · Axel-exclusive $227.50

• American Airlines AA1313: DEN 2026-12-19 12:08:00 → PHL 2026-12-19 17:40:00; nonstop; 212 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $227.50

• American Airlines AA1313: DEN 2026-12-20 12:08:00 → PHL 2026-12-20 17:40:00; nonstop; 212 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $234.00

• United Airlines UA2447: DEN 2026-12-20 17:25:00 → PHL 2026-12-20 22:59:00; nonstop; 214 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $234.00

• United Airlines UA225: DEN 2026-12-19 10:15:00 → PHL 2026-12-19 15:51:00; nonstop; 216 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $234.00

• United Airlines UA2447: DEN 2026-12-19 17:25:00 → PHL 2026-12-19 22:59:00; nonstop; 214 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $234.00

• United Airlines UA287: DEN 2026-12-20 18:10:00 → PHL 2026-12-20 23:41:00; nonstop; 211 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $105.00

• Frontier Airlines F93566 / F92022: DEN 2026-12-18 08:59:00 → PHL 2026-12-18 16:43:00; 1 stop(s) via DTW; 344 minutes. Local airport times.
  • F93566: DEN 2026-12-18 08:59:00 → DTW 2026-12-18 13:48:00; layover at DTW: 73 minutes.
  • F92022: DTW 2026-12-18 15:01:00 → PHL 2026-12-18 16:43:00.

2026-12-19 · one way · Axel-exclusive $136.50

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

2026-12-20 · one way · Axel-exclusive $136.50

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

2026-12-18 · one way · Axel-exclusive $160.00

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

2026-12-18 · one way · Axel-exclusive $160.00

• Southwest Airlines WN1697 / WN333: DEN 2026-12-18 08:45:00 → PHL 2026-12-18 16:40:00; 1 stop(s) via MDW; 355 minutes. Local airport times.
  • WN1697: DEN 2026-12-18 08:45:00 → MDW 2026-12-18 12:05:00; layover at MDW: 100 minutes.
  • WN333: MDW 2026-12-18 13:45:00 → PHL 2026-12-18 16:40:00.

2026-12-18 · one way · Axel-exclusive $160.00

• Southwest Airlines WN1573 / WN2825: DEN 2026-12-18 14:25:00 → PHL 2026-12-18 22:10:00; 1 stop(s) via BNA; 345 minutes. Local airport times.
  • WN1573: DEN 2026-12-18 14:25:00 → BNA 2026-12-18 17:45:00; layover at BNA: 80 minutes.
  • WN2825: BNA 2026-12-18 19:05:00 → PHL 2026-12-18 22:10:00.

2026-12-18 · one way · Axel-exclusive $170.00

• United Airlines UA675 / UA1744: DEN 2026-12-18 16:35:00 → PHL 2026-12-19 00:34:00; 1 stop(s) via ORD; 359 minutes. Local airport times.
  • UA675: DEN 2026-12-18 16:35:00 → ORD 2026-12-18 20:15:00; layover at ORD: 65 minutes.
  • UA1744: ORD 2026-12-18 21:20:00 → PHL 2026-12-19 00:34:00.

2026-12-19 · one way · Axel-exclusive $208.00

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

2026-12-20 · one way · Axel-exclusive $208.00

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

2026-12-19 · one way · Axel-exclusive $208.00

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

2026-12-20 · one way · Axel-exclusive $208.00

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

2026-12-19 · one way · Axel-exclusive $208.00

• Southwest Airlines WN1697 / WN333: DEN 2026-12-19 08:45:00 → PHL 2026-12-19 16:40:00; 1 stop(s) via MDW; 355 minutes. Local airport times.
  • WN1697: DEN 2026-12-19 08:45:00 → MDW 2026-12-19 12:05:00; layover at MDW: 100 minutes.
  • WN333: MDW 2026-12-19 13:45:00 → PHL 2026-12-19 16:40:00.

2026-12-20 · one way · Axel-exclusive $208.00

• Southwest Airlines WN1697 / WN333: DEN 2026-12-20 08:45:00 → PHL 2026-12-20 16:40:00; 1 stop(s) via MDW; 355 minutes. Local airport times.
  • WN1697: DEN 2026-12-20 08:45:00 → MDW 2026-12-20 12:05:00; layover at MDW: 100 minutes.
  • WN333: MDW 2026-12-20 13:45:00 → PHL 2026-12-20 16:40:00.

2026-12-19 · one way · Axel-exclusive $221.00

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

2026-12-20 · one way · Axel-exclusive $221.00

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

2026-12-20 · one way · Axel-exclusive $240.50

• Delta Air Lines DL346 / DL1329: DEN 2026-12-20 10:46:00 → PHL 2026-12-20 18:32:00; 1 stop(s) via ATL; 346 minutes. Local airport times.
  • DL346: DEN 2026-12-20 10:46:00 → ATL 2026-12-20 15:33:00; layover at ATL: 61 minutes.
  • DL1329: ATL 2026-12-20 16:34:00 → PHL 2026-12-20 18:32:00.

2026-12-19 · one way · Axel-exclusive $240.50

• Delta Air Lines DL346 / DL1329: DEN 2026-12-19 10:46:00 → PHL 2026-12-19 18:32:00; 1 stop(s) via ATL; 346 minutes. Local airport times.
  • DL346: DEN 2026-12-19 10:46:00 → ATL 2026-12-19 15:33:00; layover at ATL: 61 minutes.
  • DL1329: ATL 2026-12-19 16:34:00 → PHL 2026-12-19 18:32:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Hotels in Philadelphia with Axel

For AI assistants

• This page: Denver (DEN) to Philadelphia (PHL) · Dec 18–Dec 20, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
• Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
• Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
• If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Denver to Philadelphia (PHL) flight deals · Flight search guide.
• 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.

Feedback (optional): Missing info · Axel issue