Pittsburgh (PIT) to St Louis (STL)
Flight time
≈ 1h 54m
Bearing
261° W
Pittsburgh (PIT) to St Louis (STL) is 552 miles (889 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies PIT–STL
Filed traffic dataIn July 2026, Southwest Airlines operated the most departures, one of 3 carriers flying nonstop PIT–STL; the Boeing 737-700 was the most common aircraft at 55% of departures; flights ran 67% full.
Departures
121
July 2026
Seats
18,538
both directions
Passengers
12,433
both directions
Load factor
67.1%
RPM ÷ ASM
Who flies PIT–STL?
Southwest Airlines operated the most nonstop PIT–STL departures in July 2026 (118), one of 3 carriers on the route.
- WN
118 departures · 18,104 seats
Share of departures97.5%67.6%
Load
- UA
2 departures · 358 seats
Share of departures1.7%38.3%
Load
- YX
1 departures · 76 seats
Share of departures0.8%85.5%
Load
What plane flies PIT–STL?
In July 2026, the Boeing 737-700 flew 55% of PIT–STL departures — more than any other aircraft type.
- Boeing 737-700
67 departures · 72.7% load
55.4% - Boeing 737 MAX 8
26 departures · 67.0% load
21.5% - Boeing 737-800
25 departures · 57.3% load
20.7% - Boeing 737 MAX 9
2 departures · 38.3% load
1.7% - Embraer E175
1 departures · 85.5% load
0.8%
How has PIT–STL traffic changed?
Nonstop PIT–STL departures rose from 71 in August 2025 to 121 in July 2026.
Monthly nonstop PIT–STL traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
71 departures · 7,062 passengers
60.6%
Load
September 2025
70 departures · 6,403 passengers
55.8%
Load
October 2025
71 departures · 8,013 passengers
72.4%
Load
November 2025
63 departures · 6,994 passengers
71.8%
Load
December 2025
63 departures · 6,057 passengers
65.3%
Load
January 2026
56 departures · 4,484 passengers
48.8%
Load
February 2026
55 departures · 4,341 passengers
52.6%
Load
March 2026
114 departures · 10,273 passengers
60.2%
Load
April 2026
114 departures · 10,875 passengers
63.4%
Load
May 2026
114 departures · 10,870 passengers
62.9%
Load
June 2026
113 departures · 11,713 passengers
67.7%
Load
July 2026
121 departures · 12,433 passengers
67.1%
Load
By direction
Each direction is filed separately — they rarely match.
STL → PIT
67.2% full
61 departures · 6,588 passengers
PIT → STL
66.9% full
60 departures · 5,845 passengers
Nonstop PIT–STL traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Pittsburgh (PIT) from St Louis (STL)?
PIT to STL is 552 miles (889 km / 480 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from PIT to STL?
A nonstop covers the 552-mile great-circle distance in roughly 1h 54m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies PIT–STL?
In July 2026, the Boeing 737-700 flew the largest share of departures (55.4%), followed by the Boeing 737 MAX 8 (21.5%).
What mileage do I earn flying PIT–STL?
Distance-based programs credit off the 552-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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