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ONT to RIA: distance & flight time
Ontario (Ontario International Airport) → Santa Maria (Santa Maria Airport)
6,064 mi
9,760 km · 5,270 nm
12h 21m
estimated nonstop flight time
+4h
time difference · heading southeast
See live ONT→RIA fares Phone-only fares on this route — call free
Flight time details
6,064 miles nonstop takes roughly 12h 21m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- RIA — Santa Maria Airport · Santa Maria, Brazil
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 RIA
- GEL · Santo Ângelo Airport103 mi away
- BGX · Comandante Gustavo Kraemer Airport119 mi away
- PFB · Lauro Kurtz Airport131 mi away
- SRA · Santa Rosa Airport134 mi away
Frequently asked questions
How far is ONT from RIA?
The flight distance from Ontario (ONT) to Santa Maria (RIA) is 6,064 miles (9,760 km, 5,270 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to RIA?
A nonstop flight takes about 12h 21m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ONT to RIA?
Nonstop service on ONT–RIA depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 12h 21m nonstop estimate.
What is the time difference between Ontario and Santa Maria?
Santa Maria is 4 hours ahead of Ontario.
What is the cheapest way to fly from ONT to RIA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–RIA that never appear on search engines, with no booking fees.
Why are some ONT to RIA fares phone-only?
Consolidator contracts let us sell certain ONT–RIA tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.