Regional and State
The Vernal Regional Airport is the largest airport in the Northeastern Utah area. Regular service is available to Denver International Airport, via Great Lakes Airlines. The airport also serves small aircraft.
Other options would be the Salt Lake International Airport is Delta Air Lines' second largest hubs, with over 350 flights departing daily. Several other airlines, including United Airlines, serve the airport. Salt Lake City is readily reached from anywhere in North America. From there, Vernal is just a quick trip.
Or the Walker Field Airport in Grand Junction, two hours from Dinosaur National Monument. The airport is the largest in western Colorado and connects to all major hubs in the United States.