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
US DOT T-100 · filed dataIn April 2026, Southwest Airlines was the only carrier flying nonstop HOU–STL; the Boeing 737-700 was the most common aircraft at 44% of departures; flights ran 62% full.
Departures
264
April 2026
Seats
41,754
both directions
Passengers
25,977
both directions
Load factor
62.2%
passengers ÷ seats
Who flies HOU–STL?
Southwest Airlines was the only carrier to fly nonstop HOU–STL in April 2026 (264 departures).
- WN
Southwest Airlines
264 departures · 41,754 seats
Share of departures100.0%62.2%
Load
What plane flies HOU–STL?
In April 2026, the Boeing 737-700 flew 44% of HOU–STL departures — more than any other aircraft type.
- Boeing 737-700
117 departures · 74.7% load
44.3% - Boeing 737 MAX 8
90 departures · 53.9% load
34.1% - Boeing 737-800
57 departures · 55.2% load
21.6%
How has HOU–STL traffic changed?
Nonstop HOU–STL departures rose from 258 in May 2025 to 264 in April 2026.
Monthly nonstop HOU–STL traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
258 departures · 30,663 passengers
74.7%
Load
June 2025
276 departures · 30,605 passengers
67.6%
Load
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
By direction
The DOT files each direction separately — they rarely match.
HOU → STL
63.3% full
133 departures · 13,572 passengers
STL → HOU
61.1% full
131 departures · 12,405 passengers
Nonstop HOU–STL traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
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 April 2026, the Boeing 737-700 flew the largest share of departures (44.3%), followed by the Boeing 737 MAX 8 (34.1%).
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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