Distance between cities › USA › Montana › Boulder, MT › Distance from Boulder to Phoenix Sky Harbor International Airport Book Hotels

Distance from Boulder, MT to PHX Airport

Distance

1,120 mi

Time

19 hours 47 mins

Gas Cost

$105 - $205

Helpful Inaccurate

There are 884.37 miles from Boulder to Phoenix Sky Harbor International Airport (PHX) in south direction and 1,120 miles (1,802.47 kilometers) by car, following the I-15 route.

Boulder and PHX Airport are 19 hours 47 mins far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to PHX Airport. The halfway point is Scipio, UT.

Please note the time difference between Boulder, MT and PHX Airport is 1 hour. The current time in Boulder is 1:35 am and the current time in PHX Airport is 12:35 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to PHX Airport? Here there are some offers to rent a car in Boulder, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Boulder »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 44.98 gallons of gas to cover the route between Boulder, MT and PHX Airport.

The estimated cost of gas to go from Boulder to PHX Airport is $148.03.

During the route, an average car will release 881.28 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.29 per gallon of regular gas. Price last updated on March 13, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Boulder, MT and PHX Airport

If you want to meet halfway between Boulder, MT and PHX Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.219650 and -112.143929, or 39º 13' 10.74" N, 112º 8' 38.1444" W. This location is 560.02 miles away from Boulder, MT and PHX Airport and it would take approximately 9 hours 53 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Scipio, UT, situated 575 miles from Boulder, MT and 587 miles from PHX Airport. It would take 9 hours 39 mins to go from Boulder to Scipio and 9 hours 18 mins to go from PHX to Scipio.

Major Cities Along the Route

Some major cities along the route include Provo, UT,Salt Lake City, UT,West Valley City, UT,West Jordan, UT,Tempe, AZ,Phoenix, AZ, and Scottsdale, AZ.