Distance from SEA Airport to IAD Airport

Distance

2,794 mi

Time

2 days 1 hour

Gas Cost

$208 - $405

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There are 2,299.76 miles from Seattle–Tacoma International Airport (SEA) to Washington Dulles International Airport (IAD) in southeast direction and 2,794 miles (4,496.51 kilometers) by car, following the I-90 route.

SEA Airport and IAD Airport are 2 days 1 hour far apart, if you drive non-stop.

This is the fastest route from SEA Airport to IAD Airport. The halfway point is Kennebec, SD.

Please note the time difference between SEA Airport and IAD Airport is 3 hours. The current time in SEA Airport is 7:11 am and the current time in IAD Airport is 10:11 am.

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Gas Consumption and Emissions

A car with an MPG of will need 129.36 gallons of gas to cover the route between SEA Airport and IAD Airport.

The estimated cost of gas to go from SEA Airport to IAD Airport is $337.64.

During the route, an average car will release 2,534.48 pounds of CO2 to the atmosphere. Your carbon footprint is 0.91 pounds of CO2 per mile.


Halfway Point Between SEA Airport and IAD Airport

If you want to meet halfway between SEA Airport and IAD Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.872414 and -99.775337, or 43º 52' 20.6904" N, 99º 46' 31.2132" W. This location is 1,397.12 miles away from SEA Airport and IAD Airport and it would take approximately 1 day to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Kennebec, SD, situated 1371.88 miles from SEA Airport and 1423.59 miles from IAD Airport. It would take 23 hours 35 mins to go from SEA to Kennebec and 1 day 1 hour to go from IAD to Kennebec.

Major Cities Along the Route

Some major cities along the route include Billings, MT,Spokane, WA,Bellevue, WA,Renton, WA,Kent, WA, and Sioux Falls, SD.

Best Hotels In or Near IAD Airport

Do you have where to stay when you arrive to IAD Airport? Check out our hotel recommendations:


Lowest Price Rental Cars in SEA Airport

Planning on renting a car to go from SEA Airport to IAD Airport? Here there are some offers to rent a car in or near SEA Airport:

Small

Small cars

From $14

Intermediate

Intermediate cars

From $18

Full-size

Full-size cars

From $24

SUVs

SUVs

From $28

Vans

Vans

From $40


Compare rental car prices in Seattle–Tacoma International Airport »

Weather in SEA and IAD

SEA

Mixed precipitation throughout the week, with temperatures bottoming out at 38°F on Friday.

Wed
Feb 21
Thu
Feb 22
Fri
Feb 23
Sat
Feb 24
Sun
Feb 25
Fog Partly cloudy day Snow Partly cloudy day Rain
39° 28° 42° 27° 38° 27° 44° 33° 44° 33°
18% Rain probability 16% Rain probability 45% Rain probability 71% Rain probability 64% Rain probability
1 101 degrees 5 10 degrees 8 192 degrees 2 206 degrees 9 211 degrees

IAD

Light rain today through Sunday, with temperatures falling to 47°F on Friday.

Wed
Feb 21
Thu
Feb 22
Fri
Feb 23
Sat
Feb 24
Sun
Feb 25
Partly cloudy day Rain Cloudy Rain Rain
76° 61° 60° 43° 47° 41° 67° 48° 70° 50°
44% Rain probability 88% Rain probability 63% Rain probability 88% Rain probability 94% Rain probability
9 209 degrees 7 41 degrees 5 111 degrees 3 135 degrees 5 219 degrees

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between SEA Airport and IAD Airport in this table:

Distance type Miles Kilometers Nautical miles
Straight line distance 2,299.76 mi 3.22 km 1.74 nautical mi
Driving distance 2,794 mi 3.22 km 1.74 nautical mi

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