Frank Wiley Field (KMLS), Montana
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Frank Wiley Field, identified as KMLS, serves Miles City, Montana at an elevation of 2,634 feet. The airport is a non-towered, public-use facility with two paved asphalt runways, the longer reaching 5,764 feet, and it recorded 890 business aviation operations in the most recent reporting year according to FAA TFMSC data. It sits roughly 125 nautical miles from the nearest metro area, with the closest customs point of entry, KXWA, located about 140 nautical miles away.
Runways
Frank Wiley Field has two paved runways. The longest, 04/22, is 5,764 ft long and 75 ft wide, with an asphalt surface.
Runway geometry from published threshold coordinates. Not for navigation.
Runways are listed longest first.
Source: FAA Form 5010.
Fuel and airfield services
Frank Wiley Field has Jet A and 100LL available on the field. The airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Frank Wiley Field does not clear customs. The nearest port of entry is Williston Basin International (KXWA), 140 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Frank Wiley Field recorded 890 business aviation movements in 2025. Traffic peaks in July. Business aviation traffic at KMLS is concentrated in the summer months, peaking in July, with lighter activity in late winter and early fall.
Business jet movements, FAA TFMSC count. Peak month July, 111 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Frank Wiley Field averages 15.9 days above 90°F in July and 30.4 freeze days in December. July is the warmest month, with average highs of 88.7°F, and January the coldest, at 30.1°F.
Weather station is on the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Frank Wiley Field has published operating constraints in three categories: runway notes, environmental and other notes.
Pilots can activate the REIL lights for runways 04, 13, 22, and 31, the PAPI for runways 04, 13, 22, and 31, and the MIRL for runways 04/22 and 13/31 using the CTAF.
Training activity is conducted within 15 miles of the airport. Birds are present in the vicinity of the airport.
Field condition is not maintained; contact the airport manager.
For clearance delivery, if unable to contact on the FSS frequency, contact Salt Lake ARTCC.
Source: FAA Chart Supplement.
Nearby airfields
Frank Wiley Field has three airfields within 49 NM. The closest is Terry, 31.70 NM northeast.
Source: Skystar calculation from official coordinates.
Skystar at KMLS
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 KMLS.
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 KMLS?
Frank Wiley Field, identified as KMLS, operates two paved asphalt runways. Runway 04/22 measures 5,764 feet long and 75 feet wide. Runway 13/31 measures 5,624 feet long and 100 feet wide, offering the greater width of the two. Neither runway is lighted with high-intensity systems beyond the pilot-controlled lighting noted in field remarks. Dispatchers planning into KMLS should confirm runway lighting activation procedures given the field's non-towered status.
Is KMLS a towered airport?
Frank Wiley Field is a non-towered airport, meaning arriving and departing traffic self-coordinate on a common frequency rather than through a control tower. The field maintains an ALL / ALL / DALGT attendance schedule, indicating daylight-hours attendance year-round. Pilots unable to reach flight service on the FSS frequency should contact Salt Lake ARTCC as an alternate, per field remarks. This backup contact procedure is worth noting for flight following or clearance delivery when local FSS coverage is unavailable. KMLS operators should brief this contingency before departure.
What fuel is available at Frank Wiley Field (KMLS)?
Frank Wiley Field offers both 100LL avgas and Jet A fuel on the field. The airport's attendance schedule is listed as ALL / ALL / DALGT, meaning fuel service aligns with daylight hours across all days. Dispatchers should verify current fuel availability directly given the field's non-towered, non-24-hour operating profile. KMLS traffic volume, at 890 business aviation operations in the most recent reporting year according to FAA TFMSC data, supports a moderate but steady fuel demand base.
How far is customs clearance from KMLS?
Frank Wiley Field has no customs facility onsite. The nearest customs point of entry is KXWA, located approximately 140 nautical miles away. Operators arriving from international origins need to plan a stop at KXWA or another designated port of entry before or in place of landing directly at KMLS. This distance is a meaningful planning factor for any cross-border itinerary routed through Miles City. Confirm current customs procedures and hours at KXWA well before the intended arrival.
When is business aviation traffic busiest at KMLS?
Business aviation traffic at Frank Wiley Field is concentrated in the warmer months, with July recording the highest monthly total at 111 operations according to FAA TFMSC data. May also shows elevated activity at 91 operations, while February is the quietest month at 50 operations. This seasonal pattern means dispatchers scheduling into KMLS during mid-summer should anticipate higher local traffic density compared to winter months. Annual business aviation operations for the airport totaled 890 in the most recent reporting year.