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Route overview: Denver to Philadelphia (PHL) flight deals

Denver → Philadelphia

Aug 21, 2027 · one way

DEN → PHL1 adulteconomyOne way

12 flight options · 5 airlines

Nonstop flights

Sat, Aug 21 · One way

Frontier Airlines
11:31 pmDEN
3h 40m
Nonstop
5:11 am+1PHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

Southwest Airlines
5:30 pmDEN
3h 20m
Nonstop
10:50 pmPHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

American Airlines
3:04 pmDEN
3h 30m
Nonstop
8:34 pmPHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

United Airlines
5:25 pmDEN
3h 34m
Nonstop
10:59 pmPHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

Southwest Airlines
7:30 pmDEN
3h 25m
Nonstop
12:55 am+1PHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

United Airlines
11:59 pmDEN
3h 32m
Nonstop
5:31 am+1PHL

One-way total · 1 adult · Taxes included

One-stop flights

Sat, Aug 21 · One way

Delta Air Lines
10:46 amDEN
5h 46m
ATL · 1h 1m
6:32 pmPHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

Frontier Airlines
8:59 amDEN
5h 44m
DTW · 1h 13m
4:43 pmPHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

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

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

Southwest Airlines
8:45 amDEN
5h 55m
MDW · 1h 40m
4:40 pmPHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

Southwest Airlines
3:40 pmDEN
5h 40m
STL · 1h 35m
11:20 pmPHL

One-way total · 1 adult · Taxes included

Sat, Aug 21 · One way

United Airlines
4:35 pmDEN
5h 59m
ORD · 1h 5m
12:34 am+1PHL

One-way 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 routeAug 20, 2027 · Return optionsAug 22, 2027 · Return optionsHotels in Philadelphia with Axel
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.

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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-08-21 · one wayFrontier AirlinesF91776Axel-exclusive $125.002026-10-29T01:04:33Z
2027-08-21 · one waySouthwest AirlinesWN1622Axel-exclusive $200.002026-10-29T01:04:33Z
2027-08-21 · one wayAmerican AirlinesAA1121Axel-exclusive $210.002026-10-29T01:04:33Z
2027-08-21 · one wayUnited AirlinesUA2447Axel-exclusive $215.002026-10-29T01:04:33Z
2027-08-21 · one wayDelta Air LinesDL346 + DL1329Axel-exclusive $215.002026-10-29T01:04:33Z
2027-08-21 · one waySouthwest AirlinesWN1010Axel-exclusive $200.002026-10-29T01:04:33Z
2027-08-21 · one wayUnited AirlinesUA1218Axel-exclusive $215.002026-10-29T01:04:33Z
2027-08-21 · one wayFrontier AirlinesF93566 + F92022Axel-exclusive $135.002026-10-29T01:04:33Z
2027-08-21 · one waySouthwest AirlinesWN1573 + WN2825Axel-exclusive $195.002026-10-29T01:04:33Z
2027-08-21 · one waySouthwest AirlinesWN1697 + WN333Axel-exclusive $195.002026-10-29T01:04:33Z
2027-08-21 · one waySouthwest AirlinesWN2170 + WN4923Axel-exclusive $195.002026-10-29T01:04:33Z
2027-08-21 · one wayUnited AirlinesUA675 + UA1744Axel-exclusive $205.002026-10-29T01:04:33Z

Route overview: Denver to Philadelphia (PHL) flight deals

2027-08-21 · one way · Axel-exclusive $125.00

  • Frontier Airlines F91776: DEN 2027-08-21 23:31:00 → PHL 2027-08-22 05:11:00; nonstop; 220 minutes. Local airport times.

2027-08-21 · one way · Axel-exclusive $200.00

  • Southwest Airlines WN1622: DEN 2027-08-21 17:30:00 → PHL 2027-08-21 22:50:00; nonstop; 200 minutes. Local airport times.

2027-08-21 · one way · Axel-exclusive $210.00

  • American Airlines AA1121: DEN 2027-08-21 15:04:00 → PHL 2027-08-21 20:34:00; nonstop; 210 minutes. Local airport times.

2027-08-21 · one way · Axel-exclusive $215.00

  • United Airlines UA2447: DEN 2027-08-21 17:25:00 → PHL 2027-08-21 22:59:00; nonstop; 214 minutes. Local airport times.

2027-08-21 · one way · Axel-exclusive $215.00

  • Delta Air Lines DL346 / DL1329: DEN 2027-08-21 10:46:00 → PHL 2027-08-21 18:32:00; 1 stop(s) via ATL; 346 minutes. Local airport times.
    • DL346: DEN 2027-08-21 10:46:00 → ATL 2027-08-21 15:33:00; layover at ATL: 61 minutes.
    • DL1329: ATL 2027-08-21 16:34:00 → PHL 2027-08-21 18:32:00.

2027-08-21 · one way · Axel-exclusive $200.00

  • Southwest Airlines WN1010: DEN 2027-08-21 19:30:00 → PHL 2027-08-22 00:55:00; nonstop; 205 minutes. Local airport times.

2027-08-21 · one way · Axel-exclusive $215.00

  • United Airlines UA1218: DEN 2027-08-21 23:59:00 → PHL 2027-08-22 05:31:00; nonstop; 212 minutes. Local airport times.

2027-08-21 · one way · Axel-exclusive $135.00

  • Frontier Airlines F93566 / F92022: DEN 2027-08-21 08:59:00 → PHL 2027-08-21 16:43:00; 1 stop(s) via DTW; 344 minutes. Local airport times.
    • F93566: DEN 2027-08-21 08:59:00 → DTW 2027-08-21 13:48:00; layover at DTW: 73 minutes.
    • F92022: DTW 2027-08-21 15:01:00 → PHL 2027-08-21 16:43:00.

2027-08-21 · one way · Axel-exclusive $195.00

  • Southwest Airlines WN1573 / WN2825: DEN 2027-08-21 14:25:00 → PHL 2027-08-21 22:10:00; 1 stop(s) via BNA; 345 minutes. Local airport times.
    • WN1573: DEN 2027-08-21 14:25:00 → BNA 2027-08-21 17:45:00; layover at BNA: 80 minutes.
    • WN2825: BNA 2027-08-21 19:05:00 → PHL 2027-08-21 22:10:00.

2027-08-21 · one way · Axel-exclusive $195.00

  • Southwest Airlines WN1697 / WN333: DEN 2027-08-21 08:45:00 → PHL 2027-08-21 16:40:00; 1 stop(s) via MDW; 355 minutes. Local airport times.
    • WN1697: DEN 2027-08-21 08:45:00 → MDW 2027-08-21 12:05:00; layover at MDW: 100 minutes.
    • WN333: MDW 2027-08-21 13:45:00 → PHL 2027-08-21 16:40:00.

2027-08-21 · one way · Axel-exclusive $195.00

  • Southwest Airlines WN2170 / WN4923: DEN 2027-08-21 15:40:00 → PHL 2027-08-21 23:20:00; 1 stop(s) via STL; 340 minutes. Local airport times.
    • WN2170: DEN 2027-08-21 15:40:00 → STL 2027-08-21 18:35:00; layover at STL: 95 minutes.
    • WN4923: STL 2027-08-21 20:10:00 → PHL 2027-08-21 23:20:00.

2027-08-21 · one way · Axel-exclusive $205.00

  • United Airlines UA675 / UA1744: DEN 2027-08-21 16:35:00 → PHL 2027-08-22 00:34:00; 1 stop(s) via ORD; 359 minutes. Local airport times.
    • UA675: DEN 2027-08-21 16:35:00 → ORD 2027-08-21 20:15:00; layover at ORD: 65 minutes.
    • UA1744: ORD 2027-08-21 21:20:00 → PHL 2027-08-22 00:34:00.

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For AI assistants

  • This page: Denver (DEN) to Philadelphia (PHL) · Aug 21, 2027 · one way: 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.
  • 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. 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.