South Lafourche Leonard Miller Jr Airport (KGAO), Louisiana
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
South Lafourche Leonard Miller Jr Airport (KGAO) is a non-towered, public-use airport in Galliano, Louisiana, sitting at sea level roughly 37 nautical miles from the nearest metro area. The field pairs a 6,500-foot paved runway with onsite CBP inspection services and round-the-clock card-based fuel access, supporting both piston and business turbine traffic tied to the region's offshore and industrial activity. FAA TFMSC data for 2025 records 1,058 business aviation operations against 1,272 total annual operations at the field.
Runways
South Lafourche Leonard Miller Jr Airport has one paved runway, 18/36, 6,500 ft long and 100 ft wide, with an asphalt surface.
Runway geometry from published threshold coordinates. Not for navigation.
Helipads and surfaces under 500 ft are excluded.
Source: FAA Form 5010.
Fuel and airfield services
South Lafourche Leonard Miller Jr Airport has Jet A1+ and 100LL available on the field. Fueling is available 24 hours a day, every day, and the airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
South Lafourche Leonard Miller Jr Airport has US Customs and Border Protection clearance available onsite, with general clearance for international arrivals.
Source: CBP list of ports of entry.
Business aviation traffic
South Lafourche Leonard Miller Jr Airport recorded 1,058 business aviation movements in 2025. Traffic peaks in July. Business aviation traffic at KGAO concentrates in the summer months, peaking in July and staying elevated from May through August.
Business jet movements, FAA TFMSC count. Peak month July, 115 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
South Lafourche Leonard Miller Jr Airport averages 16.6 days above 90°F in August and 4.4 freeze days in January. August is the warmest month, with average highs of 89.4°F, and January the coldest, at 62.9°F.
Weather station is 2.8 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
South Lafourche Leonard Miller Jr Airport has published operating constraints in three categories: access, construction and other notes.
Runway 36 has SSALR approach lighting, and runway 18 has REIL. MIRL edge lighting on runways 18 and 36 is preset to low intensity from dusk to dawn. PAPI on runways 18 and 36 operates continuously. Pilots can increase lighting intensity by keying the CTAF.
For clearance delivery, contact New Orleans Approach or use frequency 120.85.
All surface work in progress is related to mowing. Bird activity has been reported in the vicinity of runway 18/36.
Fuel is available 24 hours a day, seven days a week, by credit card.
Contact the airport manager for designated ramp space for public use.
Source: FAA Chart Supplement.
Nearby airfields
South Lafourche Leonard Miller Jr Airport has five airfields within 43 NM. The closest is Houma-Terrebonne (KHUM), 22.18 NM west.
Part of the New Orleans area.
Source: Skystar calculation from official coordinates.
Skystar at KGAO
We arrange catering, fuel and trip support here. Supplier prices reach you unchanged; our coordination fee sits on its own line.
The same order, priced two ways.
$2,400.00 catering order at KGAO.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
It does not move with the size of the order.
At cost.
Passed on at the exact amount the processor took.
Market practice figures are industry averages, not a specific competitor.
Frequently asked questions
Is customs available at KGAO?
South Lafourche Leonard Miller Jr Airport has onsite CBP inspection services, meaning aircraft can clear customs directly at the field rather than diverting to another port of entry. This is listed as available onsite in the airport's data, without a stated seating or passenger cap tied to that access. Dispatchers should still coordinate arrival timing with the airport manager ahead of an international leg. KGAO's runway 18/36 offers 6,500 feet of paved surface, which supports most business jet customs arrivals without a length constraint.
What fuel is available at KGAO?
South Lafourche Leonard Miller Jr Airport stocks both 100LL and Jet A fuel, listed in airport data as A1+. A remark in the airport's records states fuel is available 24/7 with credit card, indicating self-service or card-lock access outside staffed hours. This supports irregular arrival times common in business aviation operations. KGAO's fuel availability, paired with its onsite customs service, makes it a workable stop for mixed piston and turbine traffic along the Gulf Coast.
How long is the main runway at KGAO?
The primary runway at South Lafourche Leonard Miller Jr Airport, designated 18/36, is 6,500 feet long and 100 feet wide with an asphalt surface. This is the airport's max_paved_ft figure and represents the only runway suited to fixed-wing business traffic, since the second listed surface, H1, is a 60 by 60 foot concrete pad. KGAO's 18/36 runway carries lighting for both approach and runway edge, including SSALR on runway 36 and REIL on runway 18. Pilots should note ongoing surface work tied to mowing operations, per current field remarks.
When is business aviation traffic highest at KGAO?
Business aviation activity at South Lafourche Leonard Miller Jr Airport peaks in the summer months according to FAA TFMSC data for 2025. July shows the highest count at 115 operations, with June, May, and August also elevated at 100 or more operations each. Cooler months such as October and March show notably lower activity, near 67 to 72 operations. This seasonal pattern at KGAO aligns with the Gulf Coast's warm-weather operating tempo rather than a steady year-round distribution.
What lighting is in place at KGAO for night operations?
South Lafourche Leonard Miller Jr Airport runway 36 has SSALR approach lighting, while runway 18 is equipped with REIL. Both runways 18 and 36 carry MIRL edge lighting, preset to low intensity from dusk to dawn per airport remarks. PAPI is installed on both runway ends and operates continuously. Pilots can increase lighting intensity by activating the system through CTAF, which is the standard method at this non-towered field.