Distance between cities › USA › South Dakota › Reliance, SD › Distance from Reliance to Seattle–Tacoma International Airport Book Hotels

Distance from Reliance, SD to SEA Airport

Distance

1,331 mi

Time

23 hours 11 mins

Gas Cost

$124 - $241

Helpful Inaccurate

There are 1,119.48 miles from Reliance to Seattle–Tacoma International Airport (SEA) in northwest direction and 1,331 miles (2,142.04 kilometers) by car, following the I-90 route.

Reliance and SEA Airport are 23 hours 11 mins far apart, if you drive non-stop .

This is the fastest route from Reliance, SD to SEA Airport. The halfway point is Bozeman, MT.

Please note the time difference between Reliance, SD and SEA Airport is 2 hours. The current time in Reliance is 8:58 am and the current time in SEA Airport is 6:58 am.

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Lowest Price Rental Cars in Reliance, SD

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Reliance »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 53.45 gallons of gas to cover the route between Reliance, SD and SEA Airport.

The estimated cost of gas to go from Reliance to SEA Airport is $174.34.

During the route, an average car will release 1,047.10 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 Reliance, SD and SEA Airport

If you want to meet halfway between Reliance, SD and SEA Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.652477 and -110.943520, or 45º 39' 8.9172" N, 110º 56' 36.672" W. This location is 665.39 miles away from Reliance, SD and SEA Airport and it would take approximately 11 hours 35 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Bozeman, MT, situated 705 miles from Reliance, SD and 683 miles from SEA Airport. It would take 9 hours 59 mins to go from Reliance to Bozeman and 9 hours 48 mins to go from SEA to Bozeman.