Salt Lake City (SLC) to St Louis (STL)
Flight time
≈ 3h 06m
Bearing
90° E
Salt Lake City (SLC) to St Louis (STL) is 1,153 miles (1,856 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies SLC–STL
Filed traffic dataIn July 2026, Delta Air Lines operated the most departures, one of 3 carriers flying nonstop SLC–STL; the Airbus A220-100 was the most common aircraft at 94% of departures; flights ran 86% full.
Departures
185
July 2026
Seats
20,768
both directions
Passengers
17,884
both directions
Load factor
86.1%
RPM ÷ ASM
Who flies SLC–STL?
Delta Air Lines operated the most nonstop SLC–STL departures in July 2026 (176), one of 3 carriers on the route.
- DL
176 departures · 19,220 seats
Share of departures95.1%86.5%
Load
- WN
8 departures · 1,362 seats
Share of departures4.3%88.8%
Load
- SY
1 departures · 186 seats
Share of departures0.5%24.7%
Load
What plane flies SLC–STL?
In July 2026, the Airbus A220-100 flew 94% of SLC–STL departures — more than any other aircraft type.
- Airbus A220-100
174 departures · 86.6% load
94.0% - Boeing 737 MAX 8
5 departures · 94.6% load
2.7% - Boeing 737-800
3 departures · 67.0% load
1.6% - Airbus A220-300
2 departures · 78.1% load
1.1% - Boeing 737-700
1 departures · 49.6% load
0.5%
How has SLC–STL traffic changed?
Nonstop SLC–STL departures rose from 175 in August 2025 to 185 in July 2026.
Monthly nonstop SLC–STL traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
175 departures · 16,362 passengers
75.4%
Load
September 2025
163 departures · 15,088 passengers
77.8%
Load
October 2025
178 departures · 14,935 passengers
75.0%
Load
November 2025
166 departures · 12,993 passengers
69.9%
Load
December 2025
156 departures · 14,142 passengers
66.6%
Load
January 2026
121 departures · 11,701 passengers
75.6%
Load
February 2026
130 departures · 11,054 passengers
72.1%
Load
March 2026
171 departures · 16,795 passengers
79.5%
Load
April 2026
173 departures · 17,336 passengers
75.7%
Load
May 2026
172 departures · 19,109 passengers
84.3%
Load
June 2026
178 departures · 18,248 passengers
87.8%
Load
July 2026
185 departures · 17,884 passengers
86.1%
Load
By direction
Each direction is filed separately — they rarely match.
SLC → STL
83.1% full
93 departures · 8,689 passengers
STL → SLC
89.2% full
92 departures · 9,195 passengers
Nonstop SLC–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
Frequently asked
How far is Salt Lake City (SLC) from St Louis (STL)?
SLC to STL is 1,153 miles (1,856 km / 1,002 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from SLC to STL?
A nonstop covers the 1,153-mile great-circle distance in roughly 3h 06m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies SLC–STL?
In July 2026, the Airbus A220-100 flew the largest share of departures (94.0%), followed by the Boeing 737 MAX 8 (2.7%).
What mileage do I earn flying SLC–STL?
Distance-based programs credit off the 1,153-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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