Keystone Heights Airport (42J), Florida
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Keystone Heights Airport (42J) is a public-use, non-towered general aviation field in Keystone Heights, Florida, sitting at 196 feet elevation and about 36.70 nautical miles from the nearest metro area. The field handles a modest volume of business aviation traffic, with FAA TFMSC data recording 262 business aviation operations against 674 total annual operations in 2025. Two paved asphalt runways serve traffic, and fuel is available on a self-serve basis for piston operators, with Jet A arranged by appointment.
Runways
Keystone Heights Airport has two paved runways. The longest, 05/23, is 5,046 ft long and 100 ft wide, with an asphalt surface.
Runways are listed longest first.
Source: FAA Form 5010.
Fuel and airfield services
Keystone Heights Airport has Jet A+ and 100LL available on the field. Fueling is available from 8am to 5pm, daily, and the airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Keystone Heights Airport does not clear customs. The nearest port of entry is Saint Augustine (KSGJ), 37 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Keystone Heights Airport recorded 262 business aviation movements in 2025. Traffic peaks in January and June. Business aviation traffic at Keystone Heights Airport (42J) is concentrated in the first half of the year, with January and June showing the highest monthly volumes and October the lowest.
Business jet movements, FAA TFMSC count. Peak month January, 33 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Weather station is 4.5 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Keystone Heights Airport has published operating constraints in four categories: access, weight restrictions, runway notes and other notes.
For clearance delivery, contact Jacksonville Approach.
Runways 11/29 are restricted by the airport manager to aircraft with a gross weight of 12,500 pounds or less.
Runway 05/23 has a weight bearing capacity of 2S-155.
REIL lights on runways 05, 23, and 11 activate from sunset to sunrise via CTAF. MIRL lighting on runways 05/23 and 11/29 also operates via CTAF. The PAPI system operates continuously.
A restricted area (2903A) lies 1.5 nautical miles from the runway 23 end. Fly right traffic to avoid this area.
Animals are present on and in the vicinity of the airport.
Self-serve avgas is available 24 hours a day using a credit card. Jet A fuel is available by appointment.
Source: FAA Chart Supplement.
Nearby airfields
Keystone Heights Airport has five airfields within 22 NM. The closest is Melrose Landing, 11.71 NM southeast.
Part of the Jacksonville area.
Source: Skystar calculation from official coordinates.
Skystar at 42J
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 42J.
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
What runways are available at Keystone Heights Airport (42J)?
Keystone Heights Airport, local identifier 42J, operates two paved asphalt runways. Runway 05/23 is 5,046 feet long and 100 feet wide, and runway 11/29 is 4,899 feet long and 75 feet wide. Neither runway is towered, and lighting on all three runway ends is pilot-activated from sunset to sunrise via CTAF. The PAPI system operates continuously.
Is there a weight restriction on any runway at 42J?
Yes, runway 11/29 at Keystone Heights Airport (42J) is restricted by the airport manager to aircraft weighing 12,500 pounds gross weight or less. Runway 05/23 does not carry this restriction and has a published weight bearing capacity of 2S-155. Operators planning to use 11/29 should confirm their aircraft weight falls within this limit before requesting the runway.
What fuel is available at Keystone Heights Airport?
Keystone Heights Airport (42J) offers self-serve 100LL avgas available 24 hours a day using a credit card. Jet A fuel is also listed at the field but is provided by appointment only rather than on demand. Operators requiring Jet A should plan fuel arrangements ahead of arrival rather than expecting walk-up service.
Does Keystone Heights Airport have customs clearance onsite?
Keystone Heights Airport (42J) does not have customs service onsite. The nearest customs facility is at KSGJ, located approximately 37.48 nautical miles away. Operators needing to clear customs should plan a stop at KSGJ or another designated port of entry rather than expecting to clear directly at 42J.