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 May 2026, Southwest Airlines was the only carrier flying nonstop RDU–STL; the Boeing 737 MAX 8 was the most common aircraft at 53% of departures; flights ran 60% full.
Departures
131
May 2026
Seats
21,975
both directions
Passengers
13,086
both directions
Load factor
59.6%
RPM ÷ ASM
Who flies RDU–STL?
Southwest Airlines was the only carrier to fly nonstop RDU–STL in May 2026 (131 departures).
- WN
131 departures · 21,975 seats
Share of departures100.0%59.6%
Load
What plane flies RDU–STL?
In May 2026, the Boeing 737 MAX 8 flew 53% of RDU–STL departures — more than any other aircraft type.
- Boeing 737 MAX 8
70 departures · 54.5% load
53.4% - Boeing 737-800
36 departures · 57.0% load
27.5% - Boeing 737-700
25 departures · 82.3% load
19.1%
How has RDU–STL traffic changed?
Nonstop RDU–STL departures rose from 112 in June 2025 to 131 in May 2026.
Monthly nonstop RDU–STL traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
112 departures · 12,587 passengers
72.8%
Load
July 2025
115 departures · 11,924 passengers
68.1%
Load
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
By direction
Each direction is filed separately — they rarely match.
STL → RDU
64.7% full
66 departures · 6,956 passengers
RDU → STL
54.6% full
65 departures · 6,130 passengers
Nonstop RDU–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 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 May 2026, the Boeing 737 MAX 8 flew the largest share of departures (53.4%), followed by the Boeing 737-800 (27.5%).
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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