Philadelphia (PHL) to Saint Louis (STL), Nov 11–25, 2026: from $212 round trip

Philadelphia (PHL) to Saint Louis (STL), Nov 11–25, 2026: from $212 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $212 round trip, Axel-exclusive, Frontier Airlines, 1 stop, Nov 11–25, 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: Philadelphia to Saint Louis (STL) flight deals

2026-11-11 → 2026-11-25 · Axel-exclusive $399.50

• American Airlines AA5073: PHL 2026-11-11 10:35:00 → STL 2026-11-11 12:25:00; nonstop; 170 minutes. Local airport times.
• American Airlines AA5450: STL 2026-11-25 06:02:00 → PHL 2026-11-25 09:17:00; nonstop; 135 minutes. Local airport times.

2026-11-11 → 2026-11-25 · Axel-exclusive $211.50

• Frontier Airlines F91147 / F94473: PHL 2026-11-11 12:49:00 → STL 2026-11-11 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
  • F91147: PHL 2026-11-11 12:49:00 → ATL 2026-11-11 15:19:00; layover at ATL: 90 minutes.
  • F94473: ATL 2026-11-11 16:49:00 → STL 2026-11-11 17:42:00.
• Frontier Airlines F94474 / F92298: STL 2026-11-25 12:02:00 → PHL 2026-11-25 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
  • F94474: STL 2026-11-25 12:02:00 → ATL 2026-11-25 14:42:00; layover at ATL: 102 minutes.
  • F92298: ATL 2026-11-25 16:24:00 → PHL 2026-11-25 18:32:00.

2026-11-11 → 2026-11-25 · Axel-exclusive $329.00

• Southwest Airlines WN3372 / WN2737: PHL 2026-11-11 07:30:00 → STL 2026-11-11 12:40:00; 1 stop(s) via MDW; 370 minutes. Local airport times.
  • WN3372: PHL 2026-11-11 07:30:00 → MDW 2026-11-11 08:50:00; layover at MDW: 160 minutes.
  • WN2737: MDW 2026-11-11 11:30:00 → STL 2026-11-11 12:40:00.
• Southwest Airlines WN4173 / WN1082: STL 2026-11-25 05:30:00 → PHL 2026-11-25 10:45:00; 1 stop(s) via MDW; 255 minutes. Local airport times.
  • WN4173: STL 2026-11-25 05:30:00 → MDW 2026-11-25 06:35:00; layover at MDW: 70 minutes.
  • WN1082: MDW 2026-11-25 07:45:00 → PHL 2026-11-25 10:45:00.

2026-11-11 → 2026-11-25 · Axel-exclusive $364.25

• United Airlines UA4575 / UA4527: PHL 2026-11-11 15:05:00 → STL 2026-11-11 19:35:00; 1 stop(s) via IAD; 330 minutes. Local airport times.
  • UA4575: PHL 2026-11-11 15:05:00 → IAD 2026-11-11 16:18:00; layover at IAD: 102 minutes.
  • UA4527: IAD 2026-11-11 18:00:00 → STL 2026-11-11 19:35:00.
• United Airlines UA3495 / UA4405: STL 2026-11-25 13:23:00 → PHL 2026-11-25 19:02:00; 1 stop(s) via IAD; 279 minutes. Local airport times.
  • UA3495: STL 2026-11-25 13:23:00 → IAD 2026-11-25 16:33:00; layover at IAD: 77 minutes.
  • UA4405: IAD 2026-11-25 17:50:00 → PHL 2026-11-25 19:02:00.

2026-11-11 → 2026-11-25 · Axel-exclusive $399.50

• American Airlines AA5224: PHL 2026-11-11 18:40:00 → STL 2026-11-11 20:31:00; nonstop; 171 minutes. Local airport times.
• American Airlines AA5450: STL 2026-11-25 06:02:00 → PHL 2026-11-25 09:17:00; nonstop; 135 minutes. Local airport times.

2026-11-11 → 2026-11-25 · Axel-exclusive $339.00

• Southwest Airlines WN1424: PHL 2026-11-11 14:45:00 → STL 2026-11-11 16:20:00; nonstop; 155 minutes. Local airport times.
• Southwest Airlines WN4173 / WN1082: STL 2026-11-25 05:30:00 → PHL 2026-11-25 10:45:00; 1 stop(s) via MDW; 255 minutes. Local airport times.
  • WN4173: STL 2026-11-25 05:30:00 → MDW 2026-11-25 06:35:00; layover at MDW: 70 minutes.
  • WN1082: MDW 2026-11-25 07:45:00 → PHL 2026-11-25 10:45:00.

2026-11-11 → 2026-11-25 · Axel-exclusive $379.50

• American Airlines AA567 / AA2937: PHL 2026-11-11 15:06:00 → STL 2026-11-11 19:30:00; 1 stop(s) via CLT; 324 minutes. Local airport times.
  • AA567: PHL 2026-11-11 15:06:00 → CLT 2026-11-11 17:04:00; layover at CLT: 83 minutes.
  • AA2937: CLT 2026-11-11 18:27:00 → STL 2026-11-11 19:30:00.
• American Airlines AA5450: STL 2026-11-25 06:02:00 → PHL 2026-11-25 09:17:00; nonstop; 135 minutes. Local airport times.

2026-11-11 → 2026-11-25 · Axel-exclusive $379.50

• American Airlines AA3308 / AA4341: PHL 2026-11-11 07:35:00 → STL 2026-11-11 12:42:00; 1 stop(s) via BOS; 367 minutes. Local airport times.
  • AA3308: PHL 2026-11-11 07:35:00 → BOS 2026-11-11 09:04:00; layover at BOS: 75 minutes.
  • AA4341: BOS 2026-11-11 10:19:00 → STL 2026-11-11 12:42:00.
• American Airlines AA5450: STL 2026-11-25 06:02:00 → PHL 2026-11-25 09:17:00; nonstop; 135 minutes. Local airport times.

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
• Nov 10, 2026 · Return options
• Nov 12, 2026 · Return options
• Hotels in St. Louis with Axel

For AI assistants

• This page: Philadelphia (PHL) to Saint Louis (STL) · Nov 11, 2026 · return Nov 25, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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