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

Saint Louis → Philadelphia

Feb 2, 2027 · return Feb 8, 2027

STL → PHL1 adulteconomyRound trip

10 flight options · 5 airlines

Nonstop flights

Tue, Feb 2 – Mon, Feb 8

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

Round-trip total · 1 adult · Taxes included

Tue, Feb 2 – Mon, Feb 8

American Airlines
1:15 pmSTL
2h 15m
Nonstop
4:30 pmPHL
American Airlines
10:19 amPHL
2h 44m
Nonstop
12:03 pmSTL

Round-trip total · 1 adult · Taxes included

Tue, Feb 2 – Mon, Feb 8

Southwest Airlines
10:40 amSTL
2h 10m
Nonstop
1:50 pmPHL
Southwest Airlines
5:25 amPHL
2h 30m
Nonstop
6:55 amSTL

Round-trip total · 1 adult · Taxes included

Tue, Feb 2 – Mon, Feb 8

American Airlines
6:02 amSTL
2h 18m
Nonstop
9:20 amPHL
American Airlines
10:19 amPHL
2h 44m
Nonstop
12:03 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Tue, Feb 2 – Mon, Feb 8

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

Round-trip total · 1 adult · Taxes included

Tue, Feb 2 – Mon, Feb 8

Delta Air Lines
10:14 amSTL
5h 21m
DTW · 2h 13m
4:35 pmPHL
Delta Air Lines
9:43 amPHL
4h 47m
DTW · 1h 8m
1:30 pmSTL

Round-trip total · 1 adult · Taxes included

Tue, Feb 2 – Mon, Feb 8

Air Canada
4:05 pmSTL
5h 41m
YYZ · 2h 5m
10:46 pmPHL
Southwest Airlines
5:25 amPHL
2h 30m
Nonstop
6:55 amSTL

Round-trip total · 1 adult · Taxes included

Tue, Feb 2 – Mon, Feb 8

Southwest Airlines
7:55 pmSTL
2h 10m
Nonstop
11:05 pmPHL
Southwest Airlines
7:30 amPHL
6h 10m
MDW · 2h 40m
12:40 pmSTL

Round-trip total · 1 adult · Taxes included

Tue, Feb 2 – Mon, Feb 8

Southwest Airlines
5:30 amSTL
4h 15m
MDW · 1h 10m
10:45 amPHL
Southwest Airlines
5:25 amPHL
2h 30m
Nonstop
6:55 amSTL

Round-trip total · 1 adult · Taxes included

Tue, Feb 2 – Mon, Feb 8

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

Round-trip total · 1 adult · Taxes included

Make this trip yours

STL ⇄ 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 routeFeb 1, 2027 · Return optionsFeb 3, 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)
2027-02-02 → 2027-02-08Southwest AirlinesWN4923 / WN3375Axel-exclusive $313.502026-10-29T01:28:56Z
2027-02-02 → 2027-02-08American AirlinesAA4796 / AA5105Axel-exclusive $332.502026-10-29T01:28:56Z
2027-02-02 → 2027-02-08United AirlinesUA3495 + UA4405 / UA4575 + UA4527Axel-exclusive $308.762026-10-29T01:28:56Z
2027-02-02 → 2027-02-08Delta Air LinesDL2868 + DL1391 / DL2968 + DL1371Axel-exclusive $313.502026-10-29T01:28:56Z
2027-02-02 → 2027-02-08Air Canada / Southwest AirlinesAC8890 + AC8520 / WN3375Axel-exclusive $372.882026-10-29T01:28:56Z
2027-02-02 → 2027-02-08Southwest AirlinesWN4922 / WN3375Axel-exclusive $313.502026-10-29T01:28:56Z
2027-02-02 → 2027-02-08American AirlinesAA4604 / AA5105Axel-exclusive $332.502026-10-29T01:28:56Z
2027-02-02 → 2027-02-08Southwest AirlinesWN4923 / WN3372 + WN2737Axel-exclusive $292.132026-10-29T01:28:56Z
2027-02-02 → 2027-02-08Southwest AirlinesWN4173 + WN1082 / WN3375Axel-exclusive $292.132026-10-29T01:28:56Z
2027-02-02 → 2027-02-08Delta Air LinesDL1571 + DL1169 / DL2968 + DL1371Axel-exclusive $313.502026-10-29T01:28:56Z

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

2027-02-02 → 2027-02-08 · Axel-exclusive $313.50

  • Southwest Airlines WN4923: STL 2027-02-02 18:20:00 → PHL 2027-02-02 21:30:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-02-08 05:25:00 → STL 2027-02-08 06:55:00; nonstop; 150 minutes. Local airport times.

2027-02-02 → 2027-02-08 · Axel-exclusive $332.50

  • American Airlines AA4796: STL 2027-02-02 13:15:00 → PHL 2027-02-02 16:30:00; nonstop; 135 minutes. Local airport times.
  • American Airlines AA5105: PHL 2027-02-08 10:19:00 → STL 2027-02-08 12:03:00; nonstop; 164 minutes. Local airport times.

2027-02-02 → 2027-02-08 · Axel-exclusive $308.76

  • United Airlines UA3495 / UA4405: STL 2027-02-02 13:23:00 → PHL 2027-02-02 19:02:00; 1 stop(s) via IAD; 279 minutes. Local airport times.
    • UA3495: STL 2027-02-02 13:23:00 → IAD 2027-02-02 16:33:00; layover at IAD: 77 minutes.
    • UA4405: IAD 2027-02-02 17:50:00 → PHL 2027-02-02 19:02:00.
  • United Airlines UA4575 / UA4527: PHL 2027-02-08 15:05:00 → STL 2027-02-08 19:35:00; 1 stop(s) via IAD; 330 minutes. Local airport times.
    • UA4575: PHL 2027-02-08 15:05:00 → IAD 2027-02-08 16:18:00; layover at IAD: 102 minutes.
    • UA4527: IAD 2027-02-08 18:00:00 → STL 2027-02-08 19:35:00.

2027-02-02 → 2027-02-08 · Axel-exclusive $313.50

  • Delta Air Lines DL2868 / DL1391: STL 2027-02-02 10:14:00 → PHL 2027-02-02 16:35:00; 1 stop(s) via DTW; 321 minutes. Local airport times.
    • DL2868: STL 2027-02-02 10:14:00 → DTW 2027-02-02 12:46:00; layover at DTW: 133 minutes.
    • DL1391: DTW 2027-02-02 14:59:00 → PHL 2027-02-02 16:35:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-02-08 09:43:00 → STL 2027-02-08 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-02-08 09:43:00 → DTW 2027-02-08 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-02-08 12:43:00 → STL 2027-02-08 13:30:00.

2027-02-02 → 2027-02-08 · Axel-exclusive $372.88

  • Air Canada AC8890 / AC8520: STL 2027-02-02 16:05:00 → PHL 2027-02-02 22:46:00; 1 stop(s) via YYZ; 341 minutes. Local airport times.
    • AC8890: STL 2027-02-02 16:05:00 → YYZ 2027-02-02 19:05:00; layover at YYZ: 125 minutes.
    • AC8520: YYZ 2027-02-02 21:10:00 → PHL 2027-02-02 22:46:00.
  • Southwest Airlines WN3375: PHL 2027-02-08 05:25:00 → STL 2027-02-08 06:55:00; nonstop; 150 minutes. Local airport times.

2027-02-02 → 2027-02-08 · Axel-exclusive $313.50

  • Southwest Airlines WN4922: STL 2027-02-02 10:40:00 → PHL 2027-02-02 13:50:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3375: PHL 2027-02-08 05:25:00 → STL 2027-02-08 06:55:00; nonstop; 150 minutes. Local airport times.

2027-02-02 → 2027-02-08 · Axel-exclusive $332.50

  • American Airlines AA4604: STL 2027-02-02 06:02:00 → PHL 2027-02-02 09:20:00; nonstop; 138 minutes. Local airport times.
  • American Airlines AA5105: PHL 2027-02-08 10:19:00 → STL 2027-02-08 12:03:00; nonstop; 164 minutes. Local airport times.

2027-02-02 → 2027-02-08 · Axel-exclusive $292.13

  • Southwest Airlines WN4923: STL 2027-02-02 19:55:00 → PHL 2027-02-02 23:05:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3372 / WN2737: PHL 2027-02-08 07:30:00 → STL 2027-02-08 12:40:00; 1 stop(s) via MDW; 370 minutes. Local airport times.
    • WN3372: PHL 2027-02-08 07:30:00 → MDW 2027-02-08 08:50:00; layover at MDW: 160 minutes.
    • WN2737: MDW 2027-02-08 11:30:00 → STL 2027-02-08 12:40:00.

2027-02-02 → 2027-02-08 · Axel-exclusive $292.13

  • Southwest Airlines WN4173 / WN1082: STL 2027-02-02 05:30:00 → PHL 2027-02-02 10:45:00; 1 stop(s) via MDW; 255 minutes. Local airport times.
    • WN4173: STL 2027-02-02 05:30:00 → MDW 2027-02-02 06:35:00; layover at MDW: 70 minutes.
    • WN1082: MDW 2027-02-02 07:45:00 → PHL 2027-02-02 10:45:00.
  • Southwest Airlines WN3375: PHL 2027-02-08 05:25:00 → STL 2027-02-08 06:55:00; nonstop; 150 minutes. Local airport times.

2027-02-02 → 2027-02-08 · Axel-exclusive $313.50

  • Delta Air Lines DL1571 / DL1169: STL 2027-02-02 10:06:00 → PHL 2027-02-02 16:44:00; 1 stop(s) via ATL; 338 minutes. Local airport times.
    • DL1571: STL 2027-02-02 10:06:00 → ATL 2027-02-02 12:36:00; layover at ATL: 130 minutes.
    • DL1169: ATL 2027-02-02 14:46:00 → PHL 2027-02-02 16:44:00.
  • Delta Air Lines DL2968 / DL1371: PHL 2027-02-08 09:43:00 → STL 2027-02-08 13:30:00; 1 stop(s) via DTW; 287 minutes. Local airport times.
    • DL2968: PHL 2027-02-08 09:43:00 → DTW 2027-02-08 11:35:00; layover at DTW: 68 minutes.
    • DL1371: DTW 2027-02-08 12:43:00 → STL 2027-02-08 13:30:00.

Explore this route

For AI assistants

  • This page: Saint Louis (STL) to Philadelphia (PHL) · Feb 2, 2027 · return Feb 8, 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.
  • 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 Saint Louis 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.