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Route overview: Philadelphia to Saint Louis (STL) flight deals

Philadelphia → Saint Louis

Feb 6, 2027 · return Feb 9, 2027

PHL → STL1 adulteconomyRound trip

10 flight options · 5 airlines

Nonstop flights

Sat, Feb 6 – Tue, Feb 9

Southwest Airlines
2:45 pmPHL
2h 35m
Nonstop
4:20 pmSTL
Southwest Airlines
6:20 pmSTL
2h 10m
Nonstop
9:30 pmPHL

Round-trip total · 1 adult · Taxes included

Sat, Feb 6 – Tue, Feb 9

American Airlines
8:55 pmPHL
2h 47m
Nonstop
10:42 pmSTL
American Airlines
1:15 pmSTL
2h 15m
Nonstop
4:30 pmPHL

Round-trip total · 1 adult · Taxes included

Sat, Feb 6 – Tue, Feb 9

Southwest Airlines
5:25 amPHL
2h 30m
Nonstop
6:55 amSTL
Southwest Airlines
6:20 pmSTL
2h 10m
Nonstop
9:30 pmPHL

Round-trip total · 1 adult · Taxes included

Sat, Feb 6 – Tue, Feb 9

American Airlines
10:30 amPHL
2h 48m
Nonstop
12:18 pmSTL
American Airlines
1:15 pmSTL
2h 15m
Nonstop
4:30 pmPHL

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Feb 6 – Tue, Feb 9

Frontier Airlines
12:49 pmPHL
5h 53m
ATL · 1h 30m
5:42 pmSTL
Frontier Airlines
12:02 pmSTL
5h 30m
ATL · 1h 42m
6:32 pmPHL

Round-trip total · 1 adult · Taxes included

Sat, Feb 6 – Tue, Feb 9

United Airlines
3:05 pmPHL
5h 30m
IAD · 1h 42m
7:35 pmSTL
United Airlines
1:23 pmSTL
4h 39m
IAD · 1h 17m
7:02 pmPHL

Round-trip total · 1 adult · Taxes included

Sat, Feb 6 – Tue, Feb 9

Delta Air Lines
9:43 amPHL
4h 47m
DTW · 1h 8m
1:30 pmSTL
Delta Air Lines
10:06 amSTL
5h 38m
ATL · 2h 10m
4:44 pmPHL

Round-trip total · 1 adult · Taxes included

Sat, Feb 6 – Tue, Feb 9

Southwest Airlines
6:00 amPHL
2h 40m
Nonstop
7:40 amSTL
Southwest Airlines
5:30 amSTL
4h 15m
MDW · 1h 10m
10:45 amPHL

Round-trip total · 1 adult · Taxes included

Sat, Feb 6 – Tue, Feb 9

American Airlines
7:35 amPHL
6h 7m
BOS · 1h 15m
12:42 pmSTL
American Airlines
1:15 pmSTL
2h 15m
Nonstop
4:30 pmPHL

Round-trip total · 1 adult · Taxes included

Sat, Feb 6 – Tue, Feb 9

American Airlines
3:06 pmPHL
5h 24m
CLT · 1h 23m
7:30 pmSTL
American Airlines
1:15 pmSTL
2h 15m
Nonstop
4:30 pmPHL

Round-trip total · 1 adult · Taxes included

Make this trip yours

PHL ⇄ STL

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 routeFeb 5, 2027 → Feb 8, 2027Feb 7, 2027 → Feb 10, 2027
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: Philadelphia to Saint Louis (STL) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-02-06 → 2027-02-09Southwest AirlinesWN1424 / WN4923$285.002026-10-29T01:56:03Z
2027-02-06 → 2027-02-09American AirlinesAA5536 / AA4796$323.002026-10-29T01:56:03Z
2027-02-06 → 2027-02-09Frontier AirlinesF91147 + F94473 / F94474 + F92298$171.002026-10-29T01:56:03Z
2027-02-06 → 2027-02-09United AirlinesUA4575 + UA4527 / UA3495 + UA4405$294.502026-10-29T01:56:03Z
2027-02-06 → 2027-02-09Delta Air LinesDL2968 + DL1371 / DL1571 + DL1169$304.002026-10-29T01:56:03Z
2027-02-06 → 2027-02-09Southwest AirlinesWN3375 / WN4923$285.002026-10-29T01:56:03Z
2027-02-06 → 2027-02-09American AirlinesAA5105 / AA4796$323.002026-10-29T01:56:03Z
2027-02-06 → 2027-02-09Southwest AirlinesWN3375 / WN4173 + WN1082$275.502026-10-29T01:56:03Z
2027-02-06 → 2027-02-09American AirlinesAA3308 + AA4341 / AA4796$304.002026-10-29T01:56:03Z
2027-02-06 → 2027-02-09American AirlinesAA567 + AA2937 / AA4796$304.002026-10-29T01:56:03Z

2027-02-06 → 2027-02-09 · $285.00

  • Southwest Airlines WN1424: PHL 2027-02-06 14:45:00 → STL 2027-02-06 16:20:00; nonstop; 155 minutes. Local airport times.
  • Southwest Airlines WN4923: STL 2027-02-09 18:20:00 → PHL 2027-02-09 21:30:00; nonstop; 130 minutes. Local airport times.

2027-02-06 → 2027-02-09 · $323.00

  • American Airlines AA5536: PHL 2027-02-06 20:55:00 → STL 2027-02-06 22:42:00; nonstop; 167 minutes. Local airport times.
  • American Airlines AA4796: STL 2027-02-09 13:15:00 → PHL 2027-02-09 16:30:00; nonstop; 135 minutes. Local airport times.

2027-02-06 → 2027-02-09 · $171.00

  • Frontier Airlines F91147 / F94473: PHL 2027-02-06 12:49:00 → STL 2027-02-06 17:42:00; 1 stop(s) via ATL; 353 minutes. Local airport times.
    • F91147: PHL 2027-02-06 12:49:00 → ATL 2027-02-06 15:19:00; layover at ATL: 90 minutes.
    • F94473: ATL 2027-02-06 16:49:00 → STL 2027-02-06 17:42:00.
  • Frontier Airlines F94474 / F92298: STL 2027-02-09 12:02:00 → PHL 2027-02-09 18:32:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2027-02-09 12:02:00 → ATL 2027-02-09 14:42:00; layover at ATL: 102 minutes.
    • F92298: ATL 2027-02-09 16:24:00 → PHL 2027-02-09 18:32:00.

2027-02-06 → 2027-02-09 · $294.50

  • United Airlines UA4575 / UA4527: PHL 2027-02-06 15:05:00 → STL 2027-02-06 19:35:00; 1 stop(s) via IAD; 330 minutes. Local airport times.
    • UA4575: PHL 2027-02-06 15:05:00 → IAD 2027-02-06 16:18:00; layover at IAD: 102 minutes.
    • UA4527: IAD 2027-02-06 18:00:00 → STL 2027-02-06 19:35:00.
  • United Airlines UA3495 / UA4405: STL 2027-02-09 13:23:00 → PHL 2027-02-09 19:02:00; 1 stop(s) via IAD; 279 minutes. Local airport times.
    • UA3495: STL 2027-02-09 13:23:00 → IAD 2027-02-09 16:33:00; layover at IAD: 77 minutes.
    • UA4405: IAD 2027-02-09 17:50:00 → PHL 2027-02-09 19:02:00.

2027-02-06 → 2027-02-09 · $304.00

  • Delta Air Lines DL2968 / DL1371: PHL 2027-02-06 09:43:00 → STL 2027-02-06 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-02-06 09:43:00 → DTW 2027-02-06 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-02-06 12:43:00 → STL 2027-02-06 13:30:00.
  • Delta Air Lines DL1571 / DL1169: STL 2027-02-09 10:06:00 → PHL 2027-02-09 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-02-09 10:06:00 → ATL 2027-02-09 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-02-09 14:46:00 → PHL 2027-02-09 16:44:00.

2027-02-06 → 2027-02-09 · $285.00

  • Southwest Airlines WN3375: PHL 2027-02-06 05:25:00 → STL 2027-02-06 06:55:00; nonstop; 150 minutes. Local airport times.
  • Southwest Airlines WN4923: STL 2027-02-09 18:20:00 → PHL 2027-02-09 21:30:00; nonstop; 130 minutes. Local airport times.

2027-02-06 → 2027-02-09 · $323.00

  • American Airlines AA5105: PHL 2027-02-06 10:30:00 → STL 2027-02-06 12:18:00; nonstop; 168 minutes. Local airport times.
  • American Airlines AA4796: STL 2027-02-09 13:15:00 → PHL 2027-02-09 16:30:00; nonstop; 135 minutes. Local airport times.

2027-02-06 → 2027-02-09 · $275.50

  • Southwest Airlines WN3375: PHL 2027-02-06 06:00:00 → STL 2027-02-06 07:40:00; nonstop; 160 minutes. Local airport times.
  • Southwest Airlines WN4173 / WN1082: STL 2027-02-09 05:30:00 → PHL 2027-02-09 10:45:00; 1 stop(s) via MDW; 255 minutes. Local airport times.
    • WN4173: STL 2027-02-09 05:30:00 → MDW 2027-02-09 06:35:00; layover at MDW: 70 minutes.
    • WN1082: MDW 2027-02-09 07:45:00 → PHL 2027-02-09 10:45:00.

2027-02-06 → 2027-02-09 · $304.00

  • American Airlines AA3308 / AA4341: PHL 2027-02-06 07:35:00 → STL 2027-02-06 12:42:00; 1 stop(s) via BOS; 367 minutes. Local airport times.
    • AA3308: PHL 2027-02-06 07:35:00 → BOS 2027-02-06 09:04:00; layover at BOS: 75 minutes.
    • AA4341: BOS 2027-02-06 10:19:00 → STL 2027-02-06 12:42:00.
  • American Airlines AA4796: STL 2027-02-09 13:15:00 → PHL 2027-02-09 16:30:00; nonstop; 135 minutes. Local airport times.

2027-02-06 → 2027-02-09 · $304.00

  • American Airlines AA567 / AA2937: PHL 2027-02-06 15:06:00 → STL 2027-02-06 19:30:00; 1 stop(s) via CLT; 324 minutes. Local airport times.
    • AA567: PHL 2027-02-06 15:06:00 → CLT 2027-02-06 17:04:00; layover at CLT: 83 minutes.
    • AA2937: CLT 2027-02-06 18:27:00 → STL 2027-02-06 19:30:00.
  • American Airlines AA4796: STL 2027-02-09 13:15:00 → PHL 2027-02-09 16:30:00; nonstop; 135 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Philadelphia (PHL) to Saint Louis (STL) · Feb 6, 2027 · return Feb 9, 2027: 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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  • 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 Philadelphia to Saint Louis (STL) 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.