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 May 2026, Southwest Airlines was the only carrier flying nonstop BWI–STL; the Boeing 737 MAX 8 was the most common aircraft at 42% of departures; flights ran 62% full.
Departures
224
May 2026
Seats
36,274
both directions
Passengers
22,408
both directions
Load factor
61.8%
RPM ÷ ASM
Who flies BWI–STL?
Southwest Airlines was the only carrier to fly nonstop BWI–STL in May 2026 (224 departures).
- WN
224 departures · 36,274 seats
Share of departures100.0%61.8%
Load
What plane flies BWI–STL?
In May 2026, the Boeing 737 MAX 8 flew 42% of BWI–STL departures — more than any other aircraft type.
- Boeing 737 MAX 8
93 departures · 54.1% load
41.5% - Boeing 737-700
77 departures · 76.1% load
34.4% - Boeing 737-800
54 departures · 58.9% load
24.1%
How has BWI–STL traffic changed?
Nonstop BWI–STL departures fell from 247 in June 2025 to 224 in May 2026.
Monthly nonstop BWI–STL traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
247 departures · 28,734 passengers
72.3%
Load
July 2025
249 departures · 28,380 passengers
69.7%
Load
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
By direction
Each direction is filed separately — they rarely match.
STL → BWI
65.9% full
113 departures · 11,483 passengers
BWI → STL
57.9% full
111 departures · 10,925 passengers
Nonstop BWI–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
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 May 2026, the Boeing 737 MAX 8 flew the largest share of departures (41.5%), followed by the Boeing 737-700 (34.4%).
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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