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ONT to GSP: distance & flight time
Ontario (Ontario International Airport) → Greenville (Greenville Spartanburg International Airport)
2,006 mi
3,228 km · 1,743 nm
4h 24m
estimated nonstop flight time
+3h
time difference · heading east
See live ONT→GSP fares Phone-only fares on this route — call free
Flight time details
2,006 miles nonstop takes roughly 4h 24m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- GSP — Greenville Spartanburg International Airport · Greenville, 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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Near GSP
- GMU · Greenville Downtown Airport8 mi away
- GDC · Donaldson Field Airport13 mi away
- SPA · Spartanburg Downtown Memorial Airport15 mi away
- CLT · Charlotte Douglas International Airport75 mi away
Frequently asked questions
How far is ONT from GSP?
The flight distance from Ontario (ONT) to Greenville (GSP) is 2,006 miles (3,228 km, 1,743 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to GSP?
A nonstop flight takes about 4h 24m 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 Ontario and Greenville?
Greenville is 3 hours ahead of Ontario.
What is the cheapest way to fly from ONT to GSP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–GSP that never appear on search engines, with no booking fees.