Air Miles Calculator

Distance between Ontario, CA (ONT) and Seattle, WA (SEA)

Distance from Ontario to Seattle (Ontario International Airport – Seattle–Tacoma International Airport) is 956 miles / 1539 kilometers / 831 nautical miles.

How far is Seattle from Ontario?

There are several ways to calculate distances between Ontario and Seattle. Here are two common methods:

Vincenty's formula (applied above)
  • 956.132 miles
  • 1538.746 kilometers
  • 830.856 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
  • 957.141 miles
  • 1540.370 kilometers
  • 831.733 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).

Flight duration

Estimated flight time from Ontario International Airport (ONT) to Seattle–Tacoma International Airport (SEA) is 2 hours 18 minutes.

Time difference and current local times

There is no time difference between Ontario and Seattle.

Time Difference

Ontario
Seattle

Ontario, CA

 PDT

Seattle, WA

 PDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 148 kg (326 pounds).

Airport information


A Ontario International Airport
City: Ontario, CA
Country: United States Flag of United States
IATA Code: ONT
ICAO Code: KONT
Coordinates: 34°3′21″N, 117°36′3″W

B Seattle–Tacoma International Airport
City: Seattle, WA
Country: United States Flag of United States
IATA Code: SEA
ICAO Code: KSEA
Coordinates: 47°26′56″N, 122°18′32″W

Ontario to Seattle flight path

Shortest flight path between Ontario International Airport (ONT) and Seattle–Tacoma International Airport (SEA).

Frequent Flyer Miles Calculator

Ontario (ONT) → Seattle (SEA).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
956
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
956

Round trip?