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SUS to ONT: distance & flight time
Null (Spirit of St Louis Airport) → Ontario (Ontario International Airport)
1,527 mi
2,458 km · 1,327 nm
3h 28m
estimated nonstop flight time
-2h
time difference · heading west
See live SUS→ONT fares Phone-only fares on this route — call free
Flight time details
1,527 miles nonstop takes roughly 3h 28m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- SUS — Spirit of St Louis Airport · Null, United States
- ONT — Ontario International Airport · Ontario, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near SUS
- STL · St Louis Lambert International Airport16 mi away
- ALN · St Louis Regional Airport36 mi away
- BLV · Scott AFB/Midamerica Airport45 mi away
- JEF · Jefferson City Memorial Airport81 mi away
Near ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Frequently asked questions
How far is SUS from ONT?
The flight distance from Null (SUS) to Ontario (ONT) is 1,527 miles (2,458 km, 1,327 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SUS to ONT?
A nonstop flight takes about 3h 28m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Null and Ontario?
Ontario is 2 hours behind Null.
What is the cheapest way to fly from SUS to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SUS–ONT that never appear on search engines, with no booking fees.