Philadelphia (PHL) to St. Louis (STL) Flights from ₹10,860
Fares on this route currently start from ₹10,860. Compare live PHL to STL prices, non-stop and connecting flights, departure times and airline choices before booking. Use the search panel to change origin, destination, passengers, cabin and trip type instantly.
PHL → STLApprox. 1306.01 km04 Jun 2026Live inventory
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Showing 25
of 161
live flights
Frontier Airlines
F9-3985
06:10
06/04/2026
PHL
Philadelphia International Airport
8h 21m
1 Stop
⏱ DFW · 3h 28mDFW Airport
14:31
06/04/2026
STL
St Louis Lambert International Airport
₹10,860
per person
✕ Non-refundable
Frontier Airlines
F9-1541
21:16
06/04/2026
PHL
Philadelphia International Airport
13h 13m
1 Stop
⏱ MCO · 8h 50mMCO Airport
10:29
06/05/2026
+1
STL
St Louis Lambert International Airport
₹11,391
per person
✕ Non-refundable
Frontier Airlines
F9-2505
18:10
06/04/2026
PHL
Philadelphia International Airport
5h 47m
1 Stop
⏱ MCO · 1h 24mMCO Airport
23:57
06/04/2026
STL
St Louis Lambert International Airport
₹11,434
per person
✕ Non-refundable
Frontier Airlines
F9-2505
18:10
06/04/2026
PHL
Philadelphia International Airport
16h 19m
1 Stop
⏱ MCO · 11h 51mMCO Airport
10:29
06/05/2026
+1
STL
St Louis Lambert International Airport
₹11,966
per person
✕ Non-refundable
Frontier Airlines
F9-2013
10:27
06/04/2026
TTN
Philadelphia International Airport
13h 30m
1 Stop
⏱ MCO · 9h 9mMCO Airport
23:57
06/04/2026
STL
St Louis Lambert International Airport
₹11,966
per person
✕ Non-refundable
Frontier Airlines
F9-2013
10:27
06/04/2026
TTN
Philadelphia International Airport
24h 2m
1 Stop
⏱ MCO · 19h 36mMCO Airport
10:29
06/05/2026
+1
STL
St Louis Lambert International Airport
₹11,966
per person
✕ Non-refundable
Frontier Airlines
F9-2551
06:30
06/04/2026
PHL
Philadelphia International Airport
11h 3m
1 Stop
⏱ ATL · 7h 42mATL Airport
17:33
06/04/2026
STL
St Louis Lambert International Airport
₹11,966
per person
✕ Non-refundable
Frontier Airlines
F9-2593
20:31
06/04/2026
TTN
Philadelphia International Airport
13h 58m
1 Stop
⏱ MCO · 9h 29mMCO Airport
10:29
06/05/2026
+1
STL
St Louis Lambert International Airport
₹13,888
per person
✕ Non-refundable
Frontier Airlines
F9-1541
21:16
06/04/2026
PHL
Philadelphia International Airport
26h 41m
1 Stop
⏱ MCO · 22h 23mMCO Airport
23:57
06/05/2026
+1
STL
St Louis Lambert International Airport
₹13,888
per person
✕ Non-refundable
Frontier Airlines
F9-2593
20:31
06/04/2026
TTN
Philadelphia International Airport
27h 26m
1 Stop
⏱ MCO · 23h 2mMCO Airport
23:57
06/05/2026
+1
STL
St Louis Lambert International Airport
₹13,888
per person
✕ Non-refundable
American Airlines
AA-1368
22:24
06/04/2026
PHL
Philadelphia International Airport
1h 35m
Non-stop
23:59
06/04/2026
STL
St Louis Lambert International Airport
₹15,139
per person
✓ Refundable24 fare options
American Airlines
AA-2720
09:01
06/04/2026
PHL
Philadelphia International Airport
1h 36m
Non-stop
10:37
06/04/2026
STL
St Louis Lambert International Airport
₹15,139
per person
✕ Non-refundable24 fare options
American Airlines
AA-2714
15:20
06/04/2026
PHL
Philadelphia International Airport
1h 38m
Non-stop
16:58
06/04/2026
STL
St Louis Lambert International Airport
₹15,139
per person
✓ Refundable24 fare options
Southwest Airlines
WN-3227
06:05
06/04/2026
PHL
Philadelphia International Airport
1h 20m
Non-stop
07:25
06/04/2026
STL
St Louis Lambert International Airport
₹15,470
per person
✕ Non-refundable14 fare options
Southwest Airlines
WN-2679
18:00
06/04/2026
PHL
Philadelphia International Airport
1h 35m
Non-stop
19:35
06/04/2026
STL
St Louis Lambert International Airport
₹15,470
per person
✕ Non-refundable14 fare options
Delta Air Lines
DL-1540
06:12
06/04/2026
PHL
Philadelphia International Airport
3h 17m
1 Stop
⏱ DTW · 0h 50mDTW Airport
09:29
06/04/2026
STL
St Louis Lambert International Airport
₹15,980
per person
✕ Non-refundable6 fare options
Delta Air Lines
DL-2331
12:38
06/04/2026
PHL
Philadelphia International Airport
4h 38m
1 Stop
⏱ DTW · 2h 19mDTW Airport
17:16
06/04/2026
STL
St Louis Lambert International Airport
₹15,980
per person
✕ Non-refundable6 fare options
Delta Air Lines
DL-1269
05:17
06/04/2026
PHL
Philadelphia International Airport
4h 27m
1 Stop
⏱ ATL · 1h 35mATL Airport
09:44
06/04/2026
STL
St Louis Lambert International Airport
₹15,980
per person
✕ Non-refundable6 fare options
Delta Air Lines
DL-1159
18:24
06/04/2026
PHL
Philadelphia International Airport
5h 35m
1 Stop
⏱ ATL · 2h 33mATL Airport
23:59
06/04/2026
STL
St Louis Lambert International Airport
₹16,054
per person
✕ Non-refundable
Delta Air Lines
DL-2279
14:23
06/04/2026
PHL
Philadelphia International Airport
3h 33m
1 Stop
⏱ ATL · 0h 41mATL Airport
17:56
06/04/2026
STL
St Louis Lambert International Airport
₹16,054
per person
✕ Non-refundable
American Airlines
AA-3139
06:00
06/04/2026
PHL
Philadelphia International Airport
5h 59m
1 Stop
⏱ CLT · 3h 15mCLT Airport
11:59
06/04/2026
STL
St Louis Lambert International Airport
₹16,071
per person
✓ Refundable14 fare options
American Airlines
AA-1180
10:30
06/04/2026
PHL
Philadelphia International Airport
6h 49m
1 Stop
⏱ CLT · 3h 58mCLT Airport
17:19
06/04/2026
STL
St Louis Lambert International Airport
₹16,071
per person
✓ Refundable14 fare options
American Airlines
AA-1311
12:07
06/04/2026
PHL
Philadelphia International Airport
5h 12m
1 Stop
⏱ CLT · 2h 21mCLT Airport
17:19
06/04/2026
STL
St Louis Lambert International Airport
₹16,071
per person
✓ Refundable14 fare options
Delta Air Lines
DL-508
17:17
06/04/2026
PHL
Philadelphia International Airport
6h 42m
1 Stop
⏱ ATL · 3h 43mATL Airport
23:59
06/04/2026
STL
St Louis Lambert International Airport
₹16,198
per person
✕ Non-refundable
Southwest Airlines
WN-4837
12:50
06/04/2026
PHL
Philadelphia International Airport
3h 5m
1 Stop
⏱ MDW · 0h 55mMDW Airport
15:55
06/04/2026
STL
St Louis Lambert International Airport
₹16,514
per person
✕ Non-refundable14 fare options
😕 No flights match your filters.
Philadelphia (PHL)
📍 Philadelphia International Airport
🌍 United States
🕐 GMT -5
📐 Latitude: 39.87189865112305
📐 Longitude: -75.24109649658203
St. Louis (STL)
📍 St Louis Lambert International Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 38.748697
📐 Longitude: -90.370003
✈ Distance: Philadelphia,USA to St. Louis,USA — 1306.01 km
📅 Results on this page are loaded for 04 Jun 2026. Click View all flights for the complete live search.
Philadelphia to St. Louis — what to expect when booking
The PHL–STL route is served by multiple carriers throughout the year.
Fares on this route can move quickly — a price available now may not be there 30 minutes later.
If your dates are flexible, try shifting your departure by a day or two using the date strip above.
Mid-week departures often show lower base fares compared to weekend starts on many routes.
The distance between Philadelphia,USA and St. Louis,USA is approximately
1306.01 km.
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❓ Frequently asked questions — Philadelphia to St. Louis flights
Generally yes — fares on most routes are most competitive around 4–6 weeks before departure. Booking earlier usually means better availability and a lower base fare when your dates are fixed.
The straight-line distance between Philadelphia,USA (PHL) and St. Louis,USA (STL) is approximately 1306.01 km. Actual flying distance may vary slightly depending on routing.
Non-stop availability on this route varies by airline schedule and season. Use the filters below to quickly check whether direct options are available on your selected date.
Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.