# Distance between Washington D.C. (IAD) and Dayton, OH (DAY)

Flight distance from Washington D.C. to Dayton (Washington Dulles International Airport – Dayton International Airport) is 368 miles / 592 kilometers / 320 nautical miles. Estimated flight time is 1 hour 11 minutes.

Driving distance from Washington D.C. (IAD) to Dayton (DAY) is 459 miles / 739 kilometers and travel time by car is about 8 hours 26 minutes.

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

Shortest flight path between Washington Dulles International Airport (IAD) and Dayton International Airport (DAY).

## How far is Dayton from Washington D.C.?

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

Vincenty's formula (applied above)
• 367.773 miles
• 591.874 kilometers
• 319.586 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
• 366.914 miles
• 590.490 kilometers
• 318.839 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
Coordinates: 38°56′40″N, 77°27′20″W

B Dayton International Airport
City: Dayton, OH
Country: United States
IATA Code: DAY
ICAO Code: KDAY
Coordinates: 39°54′8″N, 84°13′9″W

## Time difference and current local times

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

EDT

EDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 79 kg (174 pounds).

## Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Dayton (DAY).

Distance:
368
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
368

Round trip?