Air Miles Calculator

Distance between Washington D.C. (IAD) and Portland, ME (PWM)

Flight distance from Washington D.C. to Portland (Washington Dulles International Airport – Portland International Jetport) is 493 miles / 794 kilometers / 429 nautical miles. Estimated flight time is 1 hour 26 minutes.

Driving distance from Washington D.C. (IAD) to Portland (PWM) is 556 miles / 895 kilometers and travel time by car is about 10 hours 36 minutes.

Map of flight path and driving directions from Washington D.C. to Portland.

Shortest flight path between Washington Dulles International Airport (IAD) and Portland International Jetport (PWM).

How far is Portland from Washington D.C.?

There are several ways to calculate distances between Washington D.C. and Portland. Here are two common methods:

Vincenty's formula (applied above)
  • 493.233 miles
  • 793.781 kilometers
  • 428.608 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 492.774 miles
  • 793.043 kilometers
  • 428.209 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

Airport information


A Washington Dulles International Airport
City: Washington D.C.
Country: United States Flag of United States
IATA Code: IAD
ICAO Code: KIAD
Coordinates: 38°56′40″N, 77°27′20″W

B Portland International Jetport
City: Portland, ME
Country: United States Flag of United States
IATA Code: PWM
ICAO Code: KPWM
Coordinates: 43°38′46″N, 70°18′33″W

Time difference and current local times

There is no time difference between Washington D.C. and Portland.

Time Difference

Washington D.C.

 EDT

Portland, ME

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 98 kg (216 pounds).

Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Portland (PWM).

Distance:
493
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
493

Round trip?