Depending on your location in each of the two states, you would fly over Wyoming, Colorado, and New Mexico. These three states are on a straight line from far eastern Montana to far western Texas.If you were not flying directly to far western Texas, you might fly over South Dakota, Nebraska, Kansas, and Oklahoma rather than New Mexico.You would fly over Wyoming, Colorado and New Mexico.
Departing Helena Montana, the route would fly over Wyoming, Colorado, (possibly skirt the extreme south-west tip of Kansas, then over Oklahoma and then enter Texas for the final leg of the journey.
By 'up' it is assumed you mean north, in which case you would not fly over any states.
In general, states in the western part of the United States are larger than states in the eastern part.
western
Montana is located in the North Western region of the United States.
The western states in the 48 contiguous states that have the longest border with Canada are Washington and Montana. Washington shares a border with British Columbia, while Montana shares a border with Alberta, Saskatchewan, and British Columbia.
The Appalachian Mountains are in the eastern United States Kentucky, Tennessee, Virginia, Maryland, West Virginia, and North Carolina.
The Appalachian mountains are in the eastern United States.
The Appalachian Mountains are in the Eastern United States.
eastern
EASTERN