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Distance from Dover, DE to SEA Airport

Distance

2,828 mi

Time

2 days 2 hours

Gas Cost

$264 - $513

Helpful Inaccurate

There are 2,382.92 miles from Dover to Seattle–Tacoma International Airport (SEA) in northwest direction and 2,828 miles (4,551.22 kilometers) by car, following the I-90 route.

Dover and SEA Airport are 2 days 2 hours far apart, if you drive non-stop .

This is the fastest route from Dover, DE to SEA Airport. The halfway point is White Lake, SD.

Please note the time difference between Dover, DE and SEA Airport is 3 hours. The current time in Dover is 12:13 am (Mar 13) and the current time in SEA Airport is 9:13 pm (Mar 12).

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Lowest Price Rental Cars in Dover, DE

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Dover »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 113.58 gallons of gas to cover the route between Dover, DE and SEA Airport.

The estimated cost of gas to go from Dover to SEA Airport is $370.49.

During the route, an average car will release 2,225.23 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 Dover, DE and SEA Airport

If you want to meet halfway between Dover, DE 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 43.691929 and -98.801323, or 43º 41' 30.9444" N, 98º 48' 4.7628" W. This location is 1,414.05 miles away from Dover, DE and SEA Airport and it would take approximately 1 day 1 hour to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is White Lake, SD, situated 1,451 miles from Dover, DE and 1,434 miles from SEA Airport. It would take 22 hours to go from Dover to White Lake and 20 hours 15 mins to go from SEA to White Lake.