Mondell Field (KECS), Wyoming
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Mondell Field (KECS) serves Newcastle, Wyoming with a single paved runway and non-towered operations coordinated over CTAF. The field sits at 4,178 feet elevation and offers both 100LL and Jet A fuel during its attended hours, Monday through Saturday. Business aviation activity remains light overall, consistent with a modest regional airport, and customs clearance is not handled onsite, with the nearest facility located at Casper-Natrona County International. Pilots operating in the area should also note the proximity of high-volume sightseeing traffic near Mount Rushmore and Crazy Horse Memorial at lower altitudes.
Runways
Mondell Field has one paved runway, 14/32, 5,310 ft long and 75 ft wide, with an asphalt surface.
Runway geometry from published threshold coordinates. Not for navigation.
Source: FAA Form 5010.
Fuel and airfield services
Mondell Field 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
Mondell Field does not clear customs. The nearest port of entry is Casper / Natrona County International (KCPR), 111 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Mondell Field recorded 106 business aviation movements in 2025. Traffic peaks in June. Business aviation traffic at Mondell Field concentrates in the late spring and summer months, with May and June seeing the highest activity of the year.
Business jet movements, FAA TFMSC count. Peak month June, 18 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Mondell Field averages 13.7 days above 90°F in July, 30.6 freeze days in January and 3.4 snow days in February. July is the warmest month, with average highs of 86.6°F, and January the coldest, at 34.6°F.
Weather station is 5.8 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Mondell Field has published operating constraints in three categories: runway notes, environmental and other notes.
ODALS lighting is activated for runway 32, REIL for runway 14, and PAPI serves both runway 14 and runway 32. MIRL for runway 14/32 is controlled via CTAF.
Wildlife is present on or near the runways, and migratory bird flight paths pass near the airport.
Fuel is available after hours by prior arrangement.
For clearance delivery, if unable to contact on the FSS frequency, contact Denver ARTCC.
A high volume of aircraft operates in the vicinity of Mount Rushmore and Crazy Horse Memorial at or below 7,500 feet. Pilots are advised to monitor 122.85 for traffic advisories.
Source: FAA Chart Supplement.
Nearby airfields
Mondell Field has three airfields within 48 NM. The closest is Custer County (KCUT), 31.44 NM east.
Source: Skystar calculation from official coordinates.
Skystar at KECS
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 KECS.
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 fuel is available at KECS?
Mondell Field (KECS) stocks both 100LL and Jet A fuel. The field is attended Monday through Saturday from 0800 to 1700 local time. Outside those hours, pilots should review the after-hours fueling remark before planning a stop. No onsite customs service exists at this airport.
Is there customs clearance at KECS?
Mondell Field has no onsite customs service. The nearest customs airport of entry is Casper-Natrona County International (KCPR), located about 110.64 nautical miles away. Flights requiring customs clearance near Newcastle, Wyoming should plan their routing through that facility instead of KECS.
What is the runway length at Mondell Field?
Mondell Field (KECS) has a single paved runway, 14/32, measuring 5,310 feet long and 75 feet wide with an asphalt surface. This matches the airport's maximum paved runway length. The field sits at an elevation of 4,178 feet and is non-towered, so traffic uses CTAF for coordination.
When is business aviation traffic highest at KECS?
Business aviation traffic at Mondell Field (KECS) concentrates in the late spring and summer months, peaking in May and June according to FAA TFMSC data for 2025. Winter months, particularly December and February, see minimal activity by comparison. Dispatchers planning trips into KECS should account for this seasonal traffic pattern.