South Grand Lake Regional (1K8), Oklahoma
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
South Grand Lake Regional (1K8) is an unattended public-use airport in Ketchum, Oklahoma, serving light business aviation traffic in the Grand Lake area. The field offers a single paved runway and self-service fuel, with customs clearance handled at nearest facilities rather than onsite. Traffic at 1K8 skews toward summer months, and dispatchers should note the airport has no control tower and relies on CTAF for runway lighting activation.
Runways
South Grand Lake Regional has one paved runway, 18/36, 4,730 ft long and 75 ft wide, with an asphalt surface.
Source: FAA Form 5010.
Fuel and airfield services
South Grand Lake Regional has Jet A+ and 100LL available on the field. The airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
South Grand Lake Regional does not clear customs. The nearest port of entry is Rogers Executive - Carter Field (KROG), 45 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
South Grand Lake Regional recorded 152 business aviation movements in 2025. Traffic peaks in July and August. Business aviation traffic at 1K8 concentrates in the summer months, with July and August each recording 31 operations against single-digit counts in the winter months.
Business jet movements, FAA TFMSC count. Peak month July, 31 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
South Grand Lake Regional averages 20.6 days above 90°F in July, 21.0 freeze days in January and 0.6 snow days in January. July is the warmest month, with average highs of 91.0°F, and January the coldest, at 48.1°F.
Weather station is 9.7 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
South Grand Lake Regional has published operating constraints in two categories: runway notes and other notes.
MIRL for Runway 18/36 is pilot-activated via CTAF. PAPI for Runway 18 and Runway 36 operates continuously.
A 16-foot tree is located 116 feet from the Runway 18 threshold, 250 feet left of the extended centerline.
A road produces an obstruction clearance slope of 44:1 to the displaced threshold; a 216-foot hill located 4,789 feet from the threshold produces a 38:1 obstruction clearance slope to the displaced threshold.
For clearance delivery, contact Kansas City ARTCC.
Self-service fuel is available 24 hours a day by credit card.
Source: FAA Chart Supplement.
Nearby airfields
South Grand Lake Regional has five airfields within 25 NM. The closest is Grand Lake Regional, 7.55 NM east.
Part of the Tulsa area.
Source: Skystar calculation from official coordinates.
Skystar at 1K8
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.
$1,200.00 catering order at 1K8.
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 fuel available at 1K8 South Grand Lake Regional?
Yes, South Grand Lake Regional offers self-service fuel around the clock via credit card. Both 100LL and A+ fuel types are listed for the field, with Jet A also available. Since the airport is unattended, pilots handle fueling themselves rather than relying on line staff.
Does South Grand Lake Regional have customs clearance onsite?
No, South Grand Lake Regional (1K8) does not have customs onsite. The nearest customs facility is KROG, located approximately 45 nautical miles away. Operators requiring customs clearance should plan to route through that airport rather than 1K8.
What is the runway length at 1K8?
South Grand Lake Regional has a single paved runway, 18/36, measuring 4,730 feet long and 75 feet wide with an asphalt surface. This is also the airport's maximum paved runway length. The airport is unattended and uses pilot-activated MIRL lighting on CTAF for this runway.
Are there any obstructions near the runway at KETCHUM's South Grand Lake Regional?
Yes, South Grand Lake Regional has a documented close-in obstruction: a 16-foot tree located 116 feet from the Runway 18 threshold, offset 250 feet left of the extended centerline. Additional obstruction clearance slope data references a road at a 44:1 slope and a 216-foot hill 4,789 feet from the threshold at a 38:1 slope. Pilots operating at 1K8 should account for these when planning approach and departure paths.