Philadelphia (PHL) to St Louis (STL)
Flight time
≈ 2h 25m
Bearing
269° W
Philadelphia (PHL) to St Louis (STL) is 812 miles (1,306 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies PHL–STL
Filed traffic dataIn May 2026, Southwest Airlines operated the most departures, one of 4 carriers flying nonstop PHL–STL; the Airbus A319 was the most common aircraft at 46% of departures; flights ran 78% full.
Departures
287
May 2026
Seats
42,975
both directions
Passengers
33,364
both directions
Load factor
77.6%
RPM ÷ ASM
Who flies PHL–STL?
Southwest Airlines operated the most nonstop PHL–STL departures in May 2026 (145), one of 4 carriers on the route.
- WN
145 departures · 25,109 seats
Share of departures50.5%81.1%
Load
- AA
134 departures · 17,258 seats
Share of departures46.7%72.6%
Load
- OH
4 departures · 304 seats
Share of departures1.4%77.3%
Load
- YX
4 departures · 304 seats
Share of departures1.4%72.4%
Load
What plane flies PHL–STL?
In May 2026, the Airbus A319 flew 46% of PHL–STL departures — more than any other aircraft type.
- Airbus A319
131 departures · 73.5% load
45.6% - Boeing 737-800
73 departures · 82.3% load
25.4% - Boeing 737 MAX 8
65 departures · 80.9% load
22.7% - Boeing 737-700
7 departures · 68.7% load
2.4% - Embraer E175
4 departures · 72.4% load
1.4% - Bombardier CRJ-900
4 departures · 77.3% load
1.4% - Airbus A320
2 departures · 40.7% load
0.7% - Airbus A321
1 departures · 48.9% load
0.4%
How has PHL–STL traffic changed?
Nonstop PHL–STL departures rose from 261 in June 2025 to 287 in May 2026.
Monthly nonstop PHL–STL traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
261 departures · 31,517 passengers
86.1%
Load
July 2025
262 departures · 32,664 passengers
87.7%
Load
August 2025
283 departures · 33,144 passengers
80.7%
Load
September 2025
264 departures · 30,238 passengers
77.7%
Load
October 2025
296 departures · 32,660 passengers
76.8%
Load
November 2025
322 departures · 29,789 passengers
72.0%
Load
December 2025
298 departures · 29,483 passengers
72.6%
Load
January 2026
195 departures · 14,223 passengers
65.7%
Load
February 2026
155 departures · 12,104 passengers
65.1%
Load
March 2026
230 departures · 25,656 passengers
79.5%
Load
April 2026
260 departures · 27,438 passengers
70.6%
Load
May 2026
287 departures · 33,364 passengers
77.6%
Load
By direction
Each direction is filed separately — they rarely match.
PHL → STL
74.8% full
145 departures · 16,167 passengers
STL → PHL
80.5% full
142 departures · 17,197 passengers
Nonstop PHL–STL traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Philadelphia (PHL) from St Louis (STL)?
PHL to STL is 812 miles (1,306 km / 705 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from PHL to STL?
A nonstop covers the 812-mile great-circle distance in roughly 2h 25m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies PHL–STL?
In May 2026, the Airbus A319 flew the largest share of departures (45.6%), followed by the Boeing 737-800 (25.4%).
What mileage do I earn flying PHL–STL?
Distance-based programs credit off the 812-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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