Raleigh/Durham (RDU) to St Louis (STL)
Flight time
≈ 2h 08m
Bearing
291° W
Raleigh/Durham (RDU) to St Louis (STL) is 666 miles (1,072 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies RDU–STL
Filed traffic dataIn July 2026, Southwest Airlines operated the most departures, one of 2 carriers flying nonstop RDU–STL; the Boeing 737 MAX 8 was the most common aircraft at 40% of departures; flights ran 68% full.
Departures
123
July 2026
Seats
19,996
both directions
Passengers
13,562
both directions
Load factor
67.8%
RPM ÷ ASM
Who flies RDU–STL?
Southwest Airlines operated the most nonstop RDU–STL departures in July 2026 (122), one of 2 carriers on the route.
- WN
122 departures · 19,868 seats
Share of departures99.2%67.7%
Load
- AA
1 departures · 128 seats
Share of departures0.8%88.3%
Load
What plane flies RDU–STL?
In July 2026, the Boeing 737 MAX 8 flew 40% of RDU–STL departures — more than any other aircraft type.
- Boeing 737 MAX 8
49 departures · 60.9% load
39.8% - Boeing 737-700
39 departures · 83.4% load
31.7% - Boeing 737-800
34 departures · 63.4% load
27.6% - Airbus A319
1 departures · 88.3% load
0.8%
How has RDU–STL traffic changed?
Nonstop RDU–STL departures rose from 108 in August 2025 to 123 in July 2026.
Monthly nonstop RDU–STL traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
108 departures · 13,099 passengers
73.5%
Load
September 2025
104 departures · 12,801 passengers
73.0%
Load
October 2025
116 departures · 13,960 passengers
75.8%
Load
November 2025
116 departures · 12,548 passengers
65.6%
Load
December 2025
120 departures · 13,266 passengers
69.1%
Load
January 2026
64 departures · 5,813 passengers
58.8%
Load
February 2026
69 departures · 6,644 passengers
62.9%
Load
March 2026
122 departures · 11,741 passengers
60.4%
Load
April 2026
126 departures · 12,477 passengers
59.5%
Load
May 2026
131 departures · 13,086 passengers
59.6%
Load
June 2026
121 departures · 13,213 passengers
66.8%
Load
July 2026
123 departures · 13,562 passengers
67.8%
Load
By direction
Each direction is filed separately — they rarely match.
STL → RDU
70.9% full
62 departures · 7,091 passengers
RDU → STL
64.8% full
61 departures · 6,471 passengers
Nonstop RDU–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 Raleigh/Durham (RDU) from St Louis (STL)?
RDU to STL is 666 miles (1,072 km / 579 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from RDU to STL?
A nonstop covers the 666-mile great-circle distance in roughly 2h 08m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies RDU–STL?
In July 2026, the Boeing 737 MAX 8 flew the largest share of departures (39.8%), followed by the Boeing 737-700 (31.7%).
What mileage do I earn flying RDU–STL?
Distance-based programs credit off the 666-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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