Detroit (DTW) to St Louis (STL)
Flight time
≈ 1h 41m
Bearing
239° SW
Detroit (DTW) to St Louis (STL) is 439 miles (707 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies DTW–STL
US DOT T-100 · filed dataIn April 2026, Delta Air Lines operated the most departures, one of 4 carriers flying nonstop DTW–STL; the Boeing 717-200 was the most common aircraft at 44% of departures; flights ran 72% full.
Departures
337
April 2026
Seats
40,170
both directions
Passengers
28,832
both directions
Load factor
71.8%
passengers ÷ seats
Who flies DTW–STL?
Delta Air Lines operated the most nonstop DTW–STL departures in April 2026 (148), one of 4 carriers on the route.
- DL
Delta Air Lines
148 departures · 16,234 seats
Share of departures43.9%78.0%
Load
- WN
Southwest Airlines
116 departures · 18,400 seats
Share of departures34.4%62.2%
Load
- OO
SkyWest Airlines
69 departures · 5,232 seats
Share of departures20.5%85.8%
Load
- 9E
Endeavor Air
4 departures · 304 seats
Share of departures1.2%76.6%
Load
What plane flies DTW–STL?
In April 2026, the Boeing 717-200 flew 44% of DTW–STL departures — more than any other aircraft type.
- Boeing 717-200
147 departures · 78.3% load
43.6% - Bombardier CRJ-900
73 departures · 85.3% load
21.7% - Boeing 737-700
50 departures · 70.6% load
14.8% - Boeing 737 MAX 8
40 departures · 60.2% load
11.9% - Boeing 737-800
26 departures · 52.8% load
7.7% - Boeing 757-200
1 departures · 0.0% load
0.3%
How has DTW–STL traffic changed?
Nonstop DTW–STL departures rose from 298 in May 2025 to 337 in April 2026.
Monthly nonstop DTW–STL traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
298 departures · 28,804 passengers
81.5%
Load
June 2025
356 departures · 34,476 passengers
78.1%
Load
July 2025
380 departures · 38,402 passengers
79.6%
Load
August 2025
359 departures · 35,986 passengers
77.9%
Load
September 2025
311 departures · 29,374 passengers
76.1%
Load
October 2025
344 departures · 32,767 passengers
76.5%
Load
November 2025
303 departures · 27,437 passengers
71.2%
Load
December 2025
307 departures · 27,088 passengers
71.6%
Load
January 2026
249 departures · 18,182 passengers
61.2%
Load
February 2026
225 departures · 18,354 passengers
72.5%
Load
March 2026
319 departures · 26,126 passengers
75.2%
Load
April 2026
337 departures · 28,832 passengers
71.8%
Load
By direction
The DOT files each direction separately — they rarely match.
STL → DTW
76.4% full
170 departures · 15,452 passengers
DTW → STL
67.1% full
167 departures · 13,380 passengers
Nonstop DTW–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 Detroit (DTW) from St Louis (STL)?
DTW to STL is 439 miles (707 km / 382 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from DTW to STL?
A nonstop covers the 439-mile great-circle distance in roughly 1h 41m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies DTW–STL?
In April 2026, the Boeing 717-200 flew the largest share of departures (43.6%), followed by the Bombardier CRJ-900 (21.7%).
What mileage do I earn flying DTW–STL?
Distance-based programs credit off the 439-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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