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 July 2026, Southwest Airlines was the only carrier flying nonstop MSY–STL; the Boeing 737 MAX 8 was the most common aircraft at 49% of departures; flights ran 52% full.
Departures
118
July 2026
Seats
19,700
both directions
Passengers
10,301
both directions
Load factor
52.3%
RPM ÷ ASM
Who flies MSY–STL?
Southwest Airlines was the only carrier to fly nonstop MSY–STL in July 2026 (118 departures).
- WN
118 departures · 19,700 seats
Share of departures100.0%52.3%
Load
What plane flies MSY–STL?
In July 2026, the Boeing 737 MAX 8 flew 49% of MSY–STL departures — more than any other aircraft type.
- Boeing 737 MAX 8
58 departures · 45.1% load
49.1% - Boeing 737-800
35 departures · 52.2% load
29.7% - Boeing 737-700
25 departures · 73.7% load
21.2%
How has MSY–STL traffic changed?
Nonstop MSY–STL departures rose from 96 in August 2025 to 118 in July 2026.
Monthly nonstop MSY–STL traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
June 2026
112 departures · 10,808 passengers
57.9%
Load
July 2026
118 departures · 10,301 passengers
52.3%
Load
By direction
Each direction is filed separately — they rarely match.
STL → MSY
50.7% full
60 departures · 5,001 passengers
MSY → STL
53.8% full
58 departures · 5,300 passengers
Nonstop MSY–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
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 July 2026, the Boeing 737 MAX 8 flew the largest share of departures (49.1%), followed by the Boeing 737-800 (29.7%).
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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