Air Miles Calculator

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

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

Calculations with different 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).

Flight duration

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

Time difference and current local times

There is no time difference between Seattle and Ontario.

Time Difference

Seattle
Ontario

Seattle, WA

 PST

Ontario, CA

 PST

Airport information


A 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

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

Map

Flight map from Seattle to Ontario.

Frequent Flyer Miles Calculator

Seattle (SEA) → Ontario (ONT).

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?