Baltimore (BWI) to St Louis (STL)
Flight time
≈ 2h 16m
Bearing
272° W
Baltimore (BWI) to St Louis (STL) is 736 miles (1,184 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BWI–STL
Filed traffic dataIn July 2026, Southwest Airlines was the only carrier flying nonstop BWI–STL; the Boeing 737-700 was the most common aircraft at 47% of departures; flights ran 65% full.
Departures
243
July 2026
Seats
38,193
both directions
Passengers
24,790
both directions
Load factor
64.9%
RPM ÷ ASM
Who flies BWI–STL?
Southwest Airlines was the only carrier to fly nonstop BWI–STL in July 2026 (243 departures).
- WN
243 departures · 38,193 seats
Share of departures100.0%64.9%
Load
What plane flies BWI–STL?
In July 2026, the Boeing 737-700 flew 47% of BWI–STL departures — more than any other aircraft type.
- Boeing 737-700
114 departures · 66.6% load
46.9% - Boeing 737 MAX 8
69 departures · 57.5% load
28.4% - Boeing 737-800
60 departures · 70.9% load
24.7%
How has BWI–STL traffic changed?
Nonstop BWI–STL departures fell from 256 in August 2025 to 243 in July 2026.
Monthly nonstop BWI–STL traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
256 departures · 27,335 passengers
65.1%
Load
September 2025
235 departures · 24,301 passengers
63.0%
Load
October 2025
215 departures · 25,251 passengers
69.2%
Load
November 2025
213 departures · 21,024 passengers
62.2%
Load
December 2025
199 departures · 19,945 passengers
62.3%
Load
January 2026
141 departures · 12,090 passengers
51.4%
Load
February 2026
147 departures · 12,348 passengers
52.2%
Load
March 2026
218 departures · 22,031 passengers
61.7%
Load
April 2026
214 departures · 19,525 passengers
57.0%
Load
May 2026
224 departures · 22,408 passengers
61.8%
Load
June 2026
226 departures · 23,779 passengers
66.8%
Load
July 2026
243 departures · 24,790 passengers
64.9%
Load
By direction
Each direction is filed separately — they rarely match.
BWI → STL
62.4% full
123 departures · 11,824 passengers
STL → BWI
67.3% full
120 departures · 12,966 passengers
Nonstop BWI–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
Baltimore
US
Baltimore/Washington International Thurgood Marshall Airport
Coordinates
39.18°N, 76.67°W
Hemisphere
N · W
Frequently asked
How far is Baltimore (BWI) from St Louis (STL)?
BWI to STL is 736 miles (1,184 km / 640 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BWI to STL?
A nonstop covers the 736-mile great-circle distance in roughly 2h 16m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BWI–STL?
In July 2026, the Boeing 737-700 flew the largest share of departures (46.9%), followed by the Boeing 737 MAX 8 (28.4%).
What mileage do I earn flying BWI–STL?
Distance-based programs credit off the 736-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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