Distance between cities › USA › South Dakota › Armour, SD › Distance from Armour to Portland International Airport Book Hotels

Distance from Armour, SD to PDX Airport

Distance

1,485 mi

Time

1 day 2 hours

Gas Cost

$138 - $269

Helpful Inaccurate

There are 1,201.49 miles from Armour to Portland International Airport (PDX) in west direction and 1,485 miles (2,389.88 kilometers) by car, following the I-90 route.

Armour and PDX Airport are 1 day 2 hours far apart, if you drive non-stop .

This is the fastest route from Armour, SD to PDX Airport. The halfway point is Livingston, MT.

Please note the time difference between Armour, SD and PDX Airport is 2 hours. The current time in Armour is 4:23 am and the current time in PDX Airport is 2:23 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to PDX Airport? Here there are some offers to rent a car in Armour, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Armour »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 59.62 gallons of gas to cover the route between Armour, SD and PDX Airport.

The estimated cost of gas to go from Armour to PDX Airport is $194.50.

During the route, an average car will release 1,168.16 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 $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Armour, SD and PDX Airport

If you want to meet halfway between Armour, SD and PDX Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.717346 and -110.507408, or 45º 43' 2.4456" N, 110º 30' 26.6688" W. This location is 742.32 miles away from Armour, SD and PDX Airport and it would take approximately 13 hours 1 min to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Livingston, MT, situated 768 miles from Armour, SD and 763 miles from PDX Airport. It would take 10 hours 59 mins to go from Armour to Livingston and 11 hours 11 mins to go from PDX to Livingston.