Philadelphia (PHL) – St. Louis (STL)
- Distance
- 1,309 km
- 813 mi · 707 nm
- Flight time
- 2 h 27 min / 2 h 6 min
- Average gate to gate: PHL → STL / back
- Time difference
- 1 h
- CO2 per passenger
- 164 kg
- One way, economy, incl. RF (97 kg CO2 only)
- Passengers / year
- 331,526
- Aug 2025 – Jul 2026 · +0.9%
- Flights / week
- 61
- Both directions, average
- Seats filled
- 76%
- 438,672 seats a year
- Airlines nonstop
- 4
- WN, AA, OH
Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources
The way there
- Heading from PHL
- 269°
- Heading from STL
- 80°
- Halfway point
- 39.56, -82.87
- Great-circle km
- 1,306 km (sphere, for EU261)
- In the air PHL → STL
- 2 h 1 min
- In the air STL → PHL
- 1 h 46 min
- Clocks
- St. Louis is 1 h behind Philadelphia
The estimate for a route without real times is 2 h 20 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 33,144 |
| Sep 2025 | 30,238 |
| Oct 2025 | 32,660 |
| Nov 2025 | 29,789 |
| Dec 2025 | 29,413 |
| Jan 2026 | 14,199 |
| Feb 2026 | 12,104 |
| Mar 2026 | 25,656 |
| Apr 2026 | 27,438 |
| May 2026 | 33,364 |
| Jun 2026 | 32,094 |
| Jul 2026 | 31,427 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 283 |
| Sep 2025 | 264 |
| Oct 2025 | 296 |
| Nov 2025 | 322 |
| Dec 2025 | 296 |
| Jan 2026 | 194 |
| Feb 2026 | 154 |
| Mar 2026 | 230 |
| Apr 2026 | 260 |
| May 2026 | 287 |
| Jun 2026 | 295 |
| Jul 2026 | 286 |
Airlines flying PHL–STL nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| WNSouthwest Airlines | 28 | 56% |
| AAAmerican Airlines | 25 | 36% |
| OHPSA Airlines | 4.9 | 4% |
| YXRepublic Airline | 3.7 | 4% |
Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources
Aircraft on this route
- Airbus Industrie A319 · 1,237 flights
- Boeing B737 Max 800 · 571 flights
- Boeing 737-800 · 524 flights
- Boeing 737-700/700LR/Max 7 · 350 flights
- Embraer ERJ-175 · 193 flights
- Canadair CRJ 900 · 191 flights
- Canadair RJ-700 · 63 flights
- Airbus Industrie A320-100/200 · 20 flights
Also carried: 131 tonnes of freight and 1 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 79%
- Arrived within 15 min of schedule
- Average delay
- 18 min
- Late arrivals count, early ones as 0
- Cancelled
- 1.5%
- Flights counted
- 3,208
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| WNSouthwest Airlines | 76.8% | 16 min |
| AAAmerican Airlines | 80.2% | 20 min |
| OHPSA Airlines | 80.6% | 15 min |
| YXRepublic Airline | 85.3% | 14 min |
Delay minutes by cause: airline 34% · aircraft arriving late 49% · air traffic system 12% · weather 5% · security 0%.
Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources
What passengers paid
- Average fare, Q1 2026
- $315
- One way, all cabins
- Average over a year
- $284
- Q2 2025 – Q1 2026
- Largest airline
- American Airlines
- 50% of passengers · $327
- Lowest-fare airline
- Southwest Airlines
- 44% of passengers · $300
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q2 2025 $291 · Q3 2025 $261 · Q4 2025 $279 · Q1 2026 $315).
U.S. DOT Consumer Airfare Report, Table 6 (airline ticket sample, US domestic city pairs; each city here has this one airport). Sources
Delay compensation (EU261 / UK261)
Measured by great-circle distance: 1,306 km.
Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).
Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.