Houston (HOU) to St Louis (STL)
Flight time
≈ 2h 11m
Bearing
23° NE
Houston (HOU) to St Louis (STL) is 688 miles (1,108 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies HOU–STL
Filed traffic dataIn June 2026, Southwest Airlines was the only carrier flying nonstop HOU–STL; the Boeing 737 MAX 8 was the most common aircraft at 40% of departures; flights ran 71% full.
Departures
263
June 2026
Seats
42,263
both directions
Passengers
30,034
both directions
Load factor
71.1%
RPM ÷ ASM
Who flies HOU–STL?
Southwest Airlines was the only carrier to fly nonstop HOU–STL in June 2026 (263 departures).
- WN
263 departures · 42,263 seats
Share of departures100.0%71.1%
Load
What plane flies HOU–STL?
In June 2026, the Boeing 737 MAX 8 flew 40% of HOU–STL departures — more than any other aircraft type.
- Boeing 737 MAX 8
106 departures · 67.9% load
40.3% - Boeing 737-700
99 departures · 81.6% load
37.6% - Boeing 737-800
58 departures · 62.9% load
22.1%
How has HOU–STL traffic changed?
Nonstop HOU–STL departures fell from 286 in July 2025 to 263 in June 2026.
Monthly nonstop HOU–STL traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
286 departures · 31,977 passengers
68.0%
Load
August 2025
261 departures · 28,661 passengers
69.1%
Load
September 2025
249 departures · 25,048 passengers
64.0%
Load
October 2025
247 departures · 28,554 passengers
70.4%
Load
November 2025
264 departures · 28,673 passengers
65.3%
Load
December 2025
277 departures · 30,422 passengers
66.5%
Load
January 2026
213 departures · 22,026 passengers
60.9%
Load
February 2026
215 departures · 22,301 passengers
62.6%
Load
March 2026
290 departures · 34,458 passengers
72.5%
Load
April 2026
264 departures · 25,977 passengers
62.2%
Load
May 2026
264 departures · 29,368 passengers
71.1%
Load
June 2026
263 departures · 30,034 passengers
71.1%
Load
By direction
Each direction is filed separately — they rarely match.
HOU → STL
72.5% full
135 departures · 15,849 passengers
STL → HOU
69.6% full
128 departures · 14,185 passengers
Nonstop HOU–STL traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Houston (HOU) from St Louis (STL)?
HOU to STL is 688 miles (1,108 km / 598 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from HOU to STL?
A nonstop covers the 688-mile great-circle distance in roughly 2h 11m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies HOU–STL?
In June 2026, the Boeing 737 MAX 8 flew the largest share of departures (40.3%), followed by the Boeing 737-700 (37.6%).
What mileage do I earn flying HOU–STL?
Distance-based programs credit off the 688-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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