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St. Louis Lambert International Airport traffic pattern

Pattern altitude at St. Louis Lambert International Airport (STL · KSTL) is 1,600 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 11, 30R, 12R are charted right traffic.

All of St. Louis Lambert International Airport — runways, frequencies, charts and live weather

Pattern diagram

Drawn to scale from the FAA NASR runway alignments and the per end right traffic flags — pick a runway to see its pattern. Live wind picks the favored runway when KSTL reports it.

5,000 ftNMNxw 213°downwind 303°base 033°final 123°45° entry1124290612L30R12R30L

RWY 11RIGHT trafficRP · charted

Heading
123° mag · 122° true
Dimensions
9,000 × 150 ft
TPA
1,600 ft MSL (≈1,000 AGL) · standard
Surface
Concrete
Lights
4-light PAPI (right) (3°) + ALSF2
ILS
ILS/DME · CAT III · LOC 111.95 (OGZ) · GS 3.00°
CTAF
122.95
More details — RWY 11
Threshold elev
617 ft
Markings
precision
Threshold crossing height
67 ft
TDZ elevation
617 ft
Declared TORA/TODA/ASDA/LDA
9,000 / 9,000 / 9,000 / 9,000 ft
End lights
centerline, TDZ

Condition: Excellent. Edge lights: High. Surface: Grooved. Weight bearing: Single wheel 75k, Double wheel 200k, Dual tandem 325k, Double dual tandem 700k.

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

Pattern direction by runway

RunwayPatternHeadingPattern altitude
06 Left traffic 064° mag 1,600 ft MSL (≈1,000 AGL)
24 Left traffic 244° mag 1,600 ft MSL (≈1,000 AGL)
11 Right traffic 123° mag 1,600 ft MSL (≈1,000 AGL)
29 Left traffic 303° mag 1,600 ft MSL (≈1,000 AGL)
12L Left traffic 123° mag 1,600 ft MSL (≈1,000 AGL)
30R Right traffic 303° mag 1,600 ft MSL (≈1,000 AGL)
12R Right traffic 123° mag 1,600 ft MSL (≈1,000 AGL)
30L Left traffic 303° mag 1,600 ft MSL (≈1,000 AGL)

No pattern altitude is published for KSTL; the figure above is the AC 90-66B 1,000 ft AGL convention for propeller aircraft, rounded to the field. Turbine aircraft normally fly 1,500 ft AGL. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at KSTL

St. Louis Lambert International Airport is towered, working 118.5. Contact the tower before entering the surface area and fly the pattern you are assigned — the directions below are the charted default when no instruction is given.

Watch the right traffic ends here: 11, 30R, 12R. A right pattern at a field where the other end is left is the single most common place to end up pointing at opposing traffic. The full entry procedure is here →

Frequently asked

What is the traffic pattern altitude at KSTL?

St. Louis Lambert International Airport has no traffic pattern altitude published in the FAA NASR data. The AC 90-66B convention for propeller aircraft is 1,000 ft AGL, which works out to roughly 1,600 ft MSL (≈1,000 AGL) here — but confirm it against the Chart Supplement before you fly, since a field can have a non standard pattern altitude that NASR does not carry.

Does KSTL have right traffic?

Yes, on 3 runway ends: 11, 30R, 12R. Every other end at St. Louis Lambert International Airport is standard left traffic.

Do I fly a standard pattern at KSTL?

St. Louis Lambert International Airport is towered (118.5), so the pattern shown here is the charted default — but the controller's instruction overrides it. Expect straight in approaches, base entries and midfield crossings as traffic dictates.

More about KSTL

Pattern direction and alignment are drawn from the FAA NASR (28-day cycle); the diagram is generated, not an FAA chart. Pattern altitude is shown as published where NASR carries one, otherwise as the AC 90-66B 1,000 ft AGL convention. For planning and education only; always verify against the Chart Supplement.