Chicago (ORD) to St Louis (STL)
Flight time
≈ 1h 19m
Bearing
211° SW
Chicago (ORD) to St Louis (STL) is 258 miles (415 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ORD–STL
Filed traffic dataIn May 2026, GoJet Airlines operated the most departures, one of 6 carriers flying nonstop ORD–STL; the Bombardier CRJ-550 was the most common aircraft at 41% of departures; flights ran 71% full.
Departures
1,078
May 2026
Seats
90,694
both directions
Passengers
64,382
both directions
Load factor
71.0%
RPM ÷ ASM
Who flies ORD–STL?
GoJet Airlines operated the most nonstop ORD–STL departures in May 2026 (429), one of 6 carriers on the route.
- G7
429 departures · 21,450 seats
Share of departures39.8%79.9%
Load
- AA
208 departures · 29,660 seats
Share of departures19.3%65.8%
Load
- OO
183 departures · 12,023 seats
Share of departures17.0%79.5%
Load
- MQ
117 departures · 8,243 seats
Share of departures10.9%70.0%
Load
- UA
110 departures · 17,028 seats
Share of departures10.2%62.3%
Load
- YX
31 departures · 2,290 seats
Share of departures2.9%79.3%
Load
What plane flies ORD–STL?
In May 2026, the Bombardier CRJ-550 flew 41% of ORD–STL departures — more than any other aircraft type.
- Bombardier CRJ-550
447 departures · 79.7% load
41.5% - Airbus A319
164 departures · 72.6% load
15.2% - Embraer E175
129 departures · 78.5% load
12.0% - Bombardier CRJ-700
123 departures · 76.8% load
11.4% - Embraer E170
59 departures · 68.7% load
5.5% - Boeing 737 MAX 8
46 departures · 56.2% load
4.3% - Boeing 737-800
44 departures · 52.9% load
4.1% - Boeing 737-900ER
27 departures · 56.0% load
2.5% - Boeing 737-700
21 departures · 71.4% load
1.9% - Boeing 737 MAX 9
11 departures · 54.3% load
1.0% - Airbus A321
4 departures · 94.3% load
0.4% - Bombardier CRJ-200
2 departures · 54.0% load
0.2% - Airbus A321neo
1 departures · 80.0% load
0.1%
How has ORD–STL traffic changed?
Nonstop ORD–STL departures rose from 838 in June 2025 to 1,078 in May 2026.
Monthly nonstop ORD–STL traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
838 departures · 60,817 passengers
81.5%
Load
July 2025
846 departures · 62,795 passengers
83.2%
Load
August 2025
803 departures · 54,187 passengers
79.5%
Load
September 2025
769 departures · 53,455 passengers
80.0%
Load
October 2025
826 departures · 56,535 passengers
76.2%
Load
November 2025
748 departures · 39,489 passengers
76.6%
Load
December 2025
744 departures · 39,086 passengers
77.2%
Load
January 2026
698 departures · 34,205 passengers
81.3%
Load
February 2026
767 departures · 40,501 passengers
82.0%
Load
March 2026
902 departures · 52,498 passengers
76.3%
Load
April 2026
985 departures · 56,857 passengers
69.8%
Load
May 2026
1,078 departures · 64,382 passengers
71.0%
Load
By direction
Each direction is filed separately — they rarely match.
STL → ORD
74.1% full
542 departures · 33,942 passengers
ORD → STL
67.8% full
536 departures · 30,440 passengers
Nonstop ORD–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
Frequently asked
How far is Chicago (ORD) from St Louis (STL)?
ORD to STL is 258 miles (415 km / 224 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ORD to STL?
A nonstop covers the 258-mile great-circle distance in roughly 1h 19m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ORD–STL?
In May 2026, the Bombardier CRJ-550 flew the largest share of departures (41.5%), followed by the Airbus A319 (15.2%).
What mileage do I earn flying ORD–STL?
Distance-based programs credit off the 258-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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