Airports in Madison County, Montana
Madison County, Montana occupies a dramatic sweep of the northern Rocky Mountains, where the Madison River carves through high-elevation valleys framed by the Gravelly, Tobacco Root, and Madison ranges. The county seat of Virginia City sits at over 5,700 feet elevation, and communities like Ennis, Twin Bridges, and Sheridan are separated by mountain passes and wide-open ranch land. General aviation is not a convenience here — it is a practical necessity. Two public-use airports serve the county, both owned and maintained through local government, and both listed in the National Plan of Integrated Airport Systems (NPIAS), reflecting their recognized importance to regional air transportation.
Ennis Big Sky Airport (FAA: EKS / ICAO: KEKS)
Ennis Big Sky Airport is the premier aviation facility in Madison County, located approximately six miles southeast of Ennis along the Madison River corridor. With a single paved runway designated 16/34 measuring 7,600 feet long by 100 feet wide, the airport is capable of accommodating a wide range of general aviation aircraft, including larger turboprops and light jets commonly used by fly-in guests visiting the area's world-renowned trout fisheries. The asphalt surface is well-maintained and the runway length provides comfortable margins for operations at the field's elevation.
Ennis Big Sky Airport is owned by Madison County and operates as a public-use facility. The FBO on field is Choice Aviation, reachable at (406) 682-7502, providing essential ground services for transient and based aircraft. Pilots flying into Madison County for Madison River fly-fishing access, guest ranch stays, or backcountry adventures frequently choose EKS as their primary destination given its paved runway, length, and proximity to Ennis. The airport's NPIAS designation ensures it receives federal attention for maintenance and improvements, supporting its role as the county's aviation hub.
The surrounding terrain demands pilot awareness. Mountainous topography to the west and south, combined with high-density altitude conditions typical of Montana summers, requires careful preflight planning. Density altitude at EKS can significantly affect aircraft performance, and pilots unfamiliar with high-elevation mountain flying should consult current NOTAMs and plan conservatively with fuel loads and passenger weights.
Twin Bridges Airport (FAA: 7S1)
Twin Bridges Airport serves the southwestern corner of Madison County, located approximately two nautical miles southeast of the town of Twin Bridges, where the Ruby, Beaverhead, and Big Hole rivers converge before forming the Jefferson River. The airport sits at an elevation of 4,777 feet mean sea level and encompasses 364 acres, providing ample space for the facility's two runways and associated infrastructure.
Runway 17/35 is the primary paved surface, measuring 6,000 feet in length by 60 feet wide with an asphalt surface — well-suited for single and twin-engine piston aircraft, as well as light turboprops serving the agricultural and ranching communities nearby. A secondary turf and gravel runway, designated 7/25, extends 2,866 feet long by 110 feet wide, offering a softer-surface option for tailwheel aircraft and pilots who prefer grass-strip operations. This dual-runway configuration is relatively uncommon at rural county airports and adds operational flexibility for the range of aircraft types that frequent the field.
Twin Bridges Airport is jointly owned by Madison County and the Town of Twin Bridges, reflecting a shared commitment to maintaining local aviation infrastructure. The FBO is Ruby Valley Aviation, which can be reached at (406) 684-5335. Like EKS, Twin Bridges Airport holds NPIAS status, recognizing its contribution to the national general aviation network. The airport serves ranchers, agricultural operators, emergency medical transport, and recreational pilots exploring the Ruby River drainage and surrounding valley lands.
Nearest Commercial Airports
Madison County has no scheduled commercial airline service, which is typical for rural Montana counties of its size and geography. Travelers requiring commercial flights connect through three regional airports, each within reasonable driving distance depending on the traveler's starting point within the county.
Bozeman Yellowstone International Airport (BZN / KBZN) is the closest major commercial airport for most Madison County residents, located approximately 69 miles from Virginia City. BZN serves daily nonstop flights to major hubs including Denver, Salt Lake City, Seattle, Chicago, Minneapolis, and Los Angeles, with service from Delta, United, Alaska, Southwest, and other carriers. The airport has undergone significant expansion in recent years to accommodate rapid growth in Bozeman-area tourism and relocation.
Bert Mooney Airport in Butte (BTM / KBTM), located roughly 71 miles from Virginia City, offers daily service through Delta Connection with connections through Salt Lake City. Butte's airport is a practical option for travelers in the Twin Bridges and Sheridan areas of the county. Yellowstone Airport in West Yellowstone (WYS / KWYS), approximately 80 miles from Virginia City, operates seasonal summer commercial service with connections through Salt Lake City, making it a popular option for visitors arriving during the peak fishing and tourism season.
General Aviation Uses in Madison County
General aviation plays an outsized role in Madison County's economy and daily life. The Madison River is one of the most celebrated fly-fishing destinations in North America, drawing anglers from across the country who frequently arrive by private aircraft at EKS and arrange guided float trips directly from Ennis. Ranching and agricultural operations throughout the county rely on air transportation for rapid access to veterinary supplies, equipment parts, and personnel movement across terrain where road travel is slow. Emergency medical services also depend on general aviation infrastructure, with aircraft providing critical transport links to trauma centers in Bozeman and Butte when ground transport times are prohibitive.
International Airports
An international airport is a vital component of any major metropolitan area. It connects domestic and international travelers, providing them with a means to connect to the rest of the world.
An international airport is a large airport that is equipped to handle both domestic and international flights. It also has a significant economic impact on the local community.
These major California Airports generate thousands of jobs and contribute billions of dollars to the local economy through tourism and other related industries.
A large international airport also offers a variety of amenities for travelers. These can include shopping centers, dining options, lounges, and other services such as currency exchange and luggage storage.
Private Airports
Private airports, also known as general aviation airports, are airports that are not open to commercial airlines and are used primarily by private aircraft.
One of the main benefits of a private airport is the exclusivity and privacy it offers.
These airports are often used by high-profile individuals, such as celebrities and business executives, who value their privacy and want to avoid the crowds and security lines of commercial airports.
Private airports also offer more flexibility and convenience for aircraft owners. They can also be used for training pilots and hosting aviation events.
There are 0 Private Airport in Colusa County, California.
Regional Airports
Regional airports are smaller airports that serve a rural geographic region, such as a smaller city or county with a population of less than 100,000.
Small airports mostly offer flights within the same country, but some may offer flights to nearby countries.
One of the main advantages of regional airports is their convenience. They also tend to have shorter security lines and fewer crowds, making the overall travel experience more enjoyable.
There are 0 Regional Airport in Colusa County, California.
Municipal Airports
Municipal airports which are also called "public airports" are owned and run by local governments like cities and counties.
Most of the time, they are smaller airports that serve a certain area and have mostly domestic flights, but some may also have flights to nearby countries.
One of the main advantages of municipal airports is their accessibility. They are often located in or near major cities, making them a convenient option for travelers.
Municipal airports provide a vital link for businesses in the region, allowing them to easily connect to other parts of the country.
There are 0 Municipal Airport in Colusa County, California.
Local Airports
There are 2 Local Airport in Colusa County, California.
Colusa County Airport
Mccabe Ranch Airport
Frequently Asked Questions: Airports in Madison County, Montana
For Madison River fly-fishing, Ennis Big Sky Airport (EKS / KEKS) is the clear choice. Located six miles southeast of Ennis, it places you within minutes of the Madison's most productive float and wade sections between Ennis and Lyons Bridge. The airport's 7,600-foot paved runway handles most general aviation aircraft comfortably, and Choice Aviation at (406) 682-7502 can coordinate ground transportation and services. Several fly-fishing outfitters and guide services in Ennis are familiar with arriving anglers and can arrange pickup directly from the airport. If you are fishing the Ruby River near Twin Bridges or Sheridan, Twin Bridges Airport (7S1) with its 6,000-foot paved runway is the more convenient option, with Ruby Valley Aviation on field at (406) 684-5335.
Madison County is served by three commercial airports within driving range. Bozeman Yellowstone International (BZN) is approximately 69 miles from Virginia City and offers the broadest selection of nonstop routes to major cities including Denver, Salt Lake City, Seattle, Los Angeles, Chicago, and Minneapolis through multiple carriers. Bert Mooney Airport in Butte (BTM) is roughly 71 miles away with daily Delta Connection service to Salt Lake City, making it convenient for travelers originating in the Twin Bridges area. Yellowstone Airport in West Yellowstone (WYS) is about 80 miles from Virginia City and operates seasonal commercial service in summer months, appealing to travelers combining a Madison County visit with Yellowstone National Park exploration. Most Madison County visitors flying commercially connect through Bozeman given the route variety and airport facilities.
Both Madison County airports have FBO services that include fuel. At Ennis Big Sky Airport (EKS), Choice Aviation operates the FBO and can be contacted at (406) 682-7502 to confirm fuel availability, types, and hours of operation before your arrival. At Twin Bridges Airport (7S1), Ruby Valley Aviation serves as the FBO and can be reached at (406) 684-5335. As with many rural Montana airports, it is strongly recommended to call ahead before arriving to confirm current fuel availability and FBO hours, particularly during off-peak seasons. Both airports typically offer 100LL avgas. Jet-A availability should be confirmed directly with each FBO. Given the remoteness of Madison County, departing with full tanks from your origin airport is advisable when possible.
Twin Bridges Airport offers two runways serving different aircraft needs. Runway 17/35 is the primary paved surface, constructed of asphalt and measuring 6,000 feet long by 60 feet wide — suitable for a wide range of single and twin-engine piston aircraft and light turboprops operating at the field's 4,777-foot mean sea level elevation. Runway 7/25 is a turf and gravel surface measuring 2,866 feet long by 110 feet wide, which is particularly well-suited for tailwheel aircraft, bush planes, and pilots who routinely operate from unpaved strips. The wider width of runway 7/25 despite its shorter length accommodates aircraft with wider gear footprints. Pilots should check current NOTAMs for both surfaces before arrival, as turf runway conditions vary seasonally. Density altitude during summer months at this elevation requires performance planning attention.
Yes — high-elevation and mountain flying considerations are essential for safe operations at both Madison County airports. Twin Bridges Airport sits at 4,777 feet MSL and Ennis Big Sky Airport is similarly elevated in a valley flanked by mountain terrain. During summer months, density altitude can easily reach 7,000–8,500 feet or higher on warm afternoons, substantially reducing aircraft climb performance, accelerate-stop distance, and useful load. Pilots are strongly advised to perform density altitude performance calculations before departure and to prefer early morning arrivals when air temperatures and density altitude values are lowest. Mountainous terrain surrounding both airports creates the potential for mechanical turbulence and rapidly changing wind conditions, especially during afternoon convective activity. Pilots unfamiliar with Rocky Mountain flying should review FAA mountain flying guidance and consider a checkout with an instructor experienced in high-elevation operations. Always check current METARs, TAFs, and NOTAMs through standard preflight channels before operating into either Madison County airport.