Air Miles Calculator

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

Distance from Seattle to Ontario (Boeing Field – Ontario International Airport) is 961 miles / 1547 kilometers / 835 nautical miles.

How far is Ontario from Seattle?

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

Vincenty's formula (applied above)
  • 961.405 miles
  • 1547.231 kilometers
  • 835.438 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
  • 962.416 miles
  • 1548.859 kilometers
  • 836.317 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 Boeing Field (BFI) to Ontario International Airport (ONT) is 2 hours 19 minutes.

Time difference and current local times

There is no time difference between Seattle and Ontario.

Time Difference

Seattle
Ontario

Seattle, WA

 PDT

Ontario, CA

 PDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 148 kg (327 pounds).

Airport information


A Boeing Field
City: Seattle, WA
Country: United States Flag of United States
IATA Code: BFI
ICAO Code: KBFI
Coordinates: 47°31′47″N, 122°18′7″W

B 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

Seattle to Ontario flight path

Shortest flight path between Boeing Field (BFI) and Ontario International Airport (ONT).

Frequent Flyer Miles Calculator

Seattle (BFI) → Ontario (ONT).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
961
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
961

Round trip?