New Orleans (MSY) to St Louis (STL)
Flight time
≈ 2h 01m
Bearing
359° N
New Orleans (MSY) to St Louis (STL) is 605 miles (974 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies MSY–STL
Filed traffic dataIn May 2026, Southwest Airlines was the only carrier flying nonstop MSY–STL; the Boeing 737 MAX 8 was the most common aircraft at 45% of departures; flights ran 63% full.
Departures
121
May 2026
Seats
19,579
both directions
Passengers
12,375
both directions
Load factor
63.2%
RPM ÷ ASM
Who flies MSY–STL?
Southwest Airlines was the only carrier to fly nonstop MSY–STL in May 2026 (121 departures).
- WN
121 departures · 19,579 seats
Share of departures100.0%63.2%
Load
What plane flies MSY–STL?
In May 2026, the Boeing 737 MAX 8 flew 45% of MSY–STL departures — more than any other aircraft type.
- Boeing 737 MAX 8
55 departures · 55.5% load
45.5% - Boeing 737-700
42 departures · 77.7% load
34.7% - Boeing 737-800
24 departures · 61.0% load
19.8%
How has MSY–STL traffic changed?
Nonstop MSY–STL departures rose from 115 in June 2025 to 121 in May 2026.
Monthly nonstop MSY–STL traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
115 departures · 10,309 passengers
54.8%
Load
July 2025
114 departures · 9,805 passengers
53.1%
Load
August 2025
96 departures · 9,121 passengers
58.0%
Load
September 2025
94 departures · 9,705 passengers
63.2%
Load
October 2025
167 departures · 16,541 passengers
63.2%
Load
November 2025
115 departures · 11,411 passengers
60.1%
Load
December 2025
121 departures · 10,853 passengers
55.4%
Load
January 2026
127 departures · 11,207 passengers
54.1%
Load
February 2026
141 departures · 13,170 passengers
57.9%
Load
March 2026
136 departures · 13,562 passengers
59.6%
Load
April 2026
121 departures · 11,726 passengers
59.3%
Load
May 2026
121 departures · 12,375 passengers
63.2%
Load
By direction
Each direction is filed separately — they rarely match.
STL → MSY
61.1% full
61 departures · 6,008 passengers
MSY → STL
65.4% full
60 departures · 6,367 passengers
Nonstop MSY–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
New Orleans
US
Louis Armstrong New Orleans International Airport
Coordinates
29.99°N, 90.26°W
Hemisphere
N · W
Frequently asked
How far is New Orleans (MSY) from St Louis (STL)?
MSY to STL is 605 miles (974 km / 526 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from MSY to STL?
A nonstop covers the 605-mile great-circle distance in roughly 2h 01m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies MSY–STL?
In May 2026, the Boeing 737 MAX 8 flew the largest share of departures (45.5%), followed by the Boeing 737-700 (34.7%).
What mileage do I earn flying MSY–STL?
Distance-based programs credit off the 605-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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