Question: Are Des Moines International Airport and Grand Canyon National Park Airport both major airline hubs?

Context:
Grand Canyon National Park Airport
Grand Canyon National Park Airport (IATA: GCN, ICAO: KGCN, FAA LID: GCN) is a state-owned public-use airport located in Tusayan, a CDP in unincorporated Coconino County, Arizona, United States.
 It is near Grand Canyon National Park, seven miles (11 km) from the South Rim of the Grand Canyon.
 The airport is primarily used for scenic tours and charter flights, but there is scheduled commercial service.
Tusayan, Arizona
Tusayan is a town, but was a census-designated place during the 2010 census.
 It is located in Coconino County, Arizona, United States.
 It was incorporated in 2010.
 A resort town near the south entrance to Grand Canyon National Park, Tusayan is served by Grand Canyon National Park Airport.
 The population was 558 at the 2010 census.
Grand Canyon Airlines
Grand Canyon Airlines is an 14 CFR Part 135 air carrier headquartered on the grounds of Boulder City Airport, Boulder City, NV.
 Grand Canyon Airlines also has bases at Grand Canyon National Park Airport, AZ, and Page Airport, AZ.
 It operates sightseeing tours and scheduled passenger service over and around the Grand Canyon.
 Its headquarters and main operation center is Grand Canyon National Park Airport and Boulder City Airport, Nevada.
Air Cortez
Air Cortez was a United States FAR 121 and 135 commuter airline that operated from 1977 to 1986.
 Air Cortez served a number of cities in Southern California, Arizona, Nevada and Baja California.
 In 1981, Air Cortez was operating nonstop passenger service between Ontario Airport (ONT) and Yuma, Arizona (YUM) with a Beech 18 prop aircraft.
 In 1985, the airline was operating scheduled passenger service between Las Vegas (LAS) and Grand Canyon National Park Airport (GCN) with Fairchild F-27 turboprop and Cessna 402 prop aircraft.
 Air Cortez also operated scheduled international passenger service to Mexico with the Fairchild F-27 on a routing of Ontario-San Diego-Guaymas-Mulege-Loreto.
Norwalk, Iowa
Norwalk is a city in Warren County, with some small portions extending into Polk County, in the U.S. state of Iowa.
 The population was 8,945 at the 2010 census.
 The city is part of the Des Moines–West Des Moines Metropolitan Statistical Area and is located just south of the Des Moines International Airport.
Grand Canyon Inn and Campground
The Grand Canyon Inn and Campground, also known as the North Rim Inn, were built by the William W. Wylie and the Utah Parks Company as inexpensive tourist accommodations on the North Rim of the Grand Canyon, in Grand Canyon National Park.
 Intended to complement the more expensive Grand Canyon Lodge, the cabins and Inn were located near Bright Angel Point, but father back than their more expensive counterparts, near the Grand Canyon North Rim Headquarters.
 The design of the cabins and the redesign of the Inn building were undertaken by architect Gilbert Stanley Underwood.
Grand Canyon Park Operations Building
Grand Canyon Park Operations Building, was built in 1929 on the South Rim of the Grand Canyon in Grand Canyon National Park.
 It is significant as an example of a National Park Service building designed to blend harmoniously with the natural surroundings, in the National Park Service Rustic style.
 The Operations Building was designed to replace the Superintendent's Residence as the park headquarters.
 It was in turn replaced by a newer building in 1967, and presently functions as the headquarters for park law enforcement.
 The building was designed by the National Park Service Landscape Division under the direction of Thomas Chalmers Vint, and has been designated a National Historic Landmark for its design significance.
Grand Canyon Village Historic District
Grand Canyon Village Historic District comprises the historic center of Grand Canyon Village, on the South Rim of the Grand Canyon in Grand Canyon National Park, Arizona.
 The district includes numerous landmark park structures, many of which are National Historic Landmarks themselves, or are listed on the National Register of Historic Places.
 The town design as a whole is also significant for its attention to integration with the Grand Canyon landscape, its incorporation of National Park Service Rustic design elements, and for the idiosyncratic design of park concessioner structures such as the El Tovar Hotel.
Grand Canyon Connector Bicycle Route
The Adventure Cycling Association Grand Canyon Connector Bicycle Route is the 573 mi connector route between the Western Express Bicycle Route and the Southern Tier Bicycle Route.
 It also connects the Zion National Park and both sides of Grand Canyon National Park.
 From the Western Express Route, it offers the opportunity to access Zion National Park and the north rim of the Grand Canyon.
 From the Southern Tier Route, it is 185 mi to reach the south rim of the Grand Canyon.
Des Moines International Airport
Des Moines International Airport (IATA: DSM, ICAO: KDSM, FAA LID: DSM) is a civil-military public airport three miles southwest of Des Moines, in Polk County, Iowa, United States.
 It has 19 connections to major airline hubs.

Answer: no