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Cheap Flights from Rome Fiumicino to Ontario International

Compare Rome Fiumicino to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Rome Fiumicino to Ontario International

Looking for a cheap last-minute deal or the best return flight from Rome Fiumicino Airport to Ontario International Airport? If you want to travel next month, return fares start from Rs186,325. Find the lowest prices on one-way and return tickets right here.
Ontario.Rs139,486 per passenger.Departing Sun, 15 Nov.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Sun, 15 Nov, arriving in Ontario International.Price includes taxes and charges.From Rs139,486, select.
Ontario.Rs139,486 per passenger.Departing Mon, 11 May.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Mon, 11 May, arriving in Ontario International.Price includes taxes and charges.From Rs139,486, select.
Ontario.Rs139,499 per passenger.Departing Thu, 25 Mar.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Thu, 25 Mar, arriving in Ontario International.Price includes taxes and charges.From Rs139,499, select.
Ontario.Rs139,499 per passenger.Departing Tue, 6 Oct.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Tue, 6 Oct, arriving in Ontario International.Price includes taxes and charges.From Rs139,499, select.
Ontario.Rs139,499 per passenger.Departing Tue, 1 Sep.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Tue, 1 Sep, arriving in Ontario International.Price includes taxes and charges.From Rs139,499, select.
Ontario.Rs139,499 per passenger.Departing Fri, 21 Aug.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Fri, 21 Aug, arriving in Ontario International.Price includes taxes and charges.From Rs139,499, select.
Ontario.Rs144,328 per passenger.Departing Mon, 1 Jun.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from Rome Fiumicino on Mon, 1 Jun, arriving in Ontario International.Price includes taxes and charges.From Rs144,328, select.
Ontario.Rs159,357 per passenger.Departing Tue, 8 Dec.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Tue, 8 Dec, arriving in Ontario International.Price includes taxes and charges.From Rs159,357, select.
Ontario.Rs159,357 per passenger.Departing Thu, 4 Feb.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Thu, 4 Feb, arriving in Ontario International.Price includes taxes and charges.From Rs159,357, select.
Ontario.Rs159,377 per passenger.Departing Thu, 28 Jan.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from Rome Fiumicino on Thu, 28 Jan, arriving in Ontario International.Price includes taxes and charges.From Rs159,377, select.
Ontario.Rs184,199 per passenger.Departing Sat, 4 Jul.One-way flight with Wizz Air Malta.Outbound indirect flight with Wizz Air Malta, departs from Rome Fiumicino on Sat, 4 Jul, arriving in Ontario International.Price includes taxes and charges.From Rs184,199, select.

Find the cheapest month to fly from Rome Fiumicino to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Rome Fiumicino to Ontario International flights are currently cheapest in May.
May
from Rs139,486
Jun
from Rs144,328
Jul
from Rs184,199
Aug
from Rs139,499
Sep
from Rs139,499
Oct
from Rs139,499
Nov
from Rs139,486
Dec
from Rs159,357
Jan
from Rs159,377
Feb
from Rs159,357
Mar
from Rs139,499
Apr
Find prices

Rome Fiumicino to Ontario International: Alternative routes

Compare routes from Rome Fiumicino to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Ontario International

4km from central Ontario
Closest
from Rs139,486
Search flights

San Bernardino Norton AFB

39km from central Ontario
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Santa Ana John Wayne

48km from central Ontario
from Rs137,160
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Long Beach Municipal

54km from central Ontario
from Rs240,519
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Hawthorne

65km from central Ontario
from Rs282,194
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Burbank

67km from central Ontario
from Rs143,872
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Los Angeles International

71km from central Ontario
Cheapest
from Rs97,883
Search flights

Rome to Ontario: Flight information

The things to know before you go.
Cheapest flight foundRs139,486
Cheapest month to flyMay

Finding cheap flights from Rome Fiumicino to Ontario International: Frequently asked questions

The best price we found for a return flight from Rome Fiumicino to Ontario International is Rs153,659. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Rome Fiumicino to Ontario International. But we found flights with one or more stops from Rs153,659.
As of May 2026, there are no flights flying from Rome Fiumicino to Ontario International.
The cheapest month to fly from Rome Fiumicino to Ontario International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Rome Fiumicino Airport to Ontario International Airport on Thursday, 10 September 2026.
No airlines currently offer direct flights between Rome Fiumicino Airport and Ontario International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Iberia offers the cheapest flight tickets to Ontario International.

Flying from Leonardo da Vinci-Fiumicino Airport (FCO) to Ontario International Airport (ONT): what you need to know

  • Ontario's timezone is UTC-7, making Ontario eight hours behind Rome.

  • Get to the airport on time so you don't miss your FCO to ONT flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.

  • During popular months such as August, it's best to get to the airport well in advance. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're flying during a high season in general.

  • If you want to include a stop along the way, just deselect 'Direct flights only' when searching for your ticket from Leonardo da Vinci-Fiumicino Airport to Ontario International Airport. These are the top stopovers between FCO and ONT:

    • San Francisco International Airport

    • Hartsfield-Jackson Atlanta International Airport

    • Dallas/Fort Worth International Airport

How to find the cheapest flights from Leonardo da Vinci-Fiumicino Airport (FCO) to Ontario International Airport (ONT)

  • Rs139,486 is currently the best price for a one-way Leonardo da Vinci-Fiumicino Airport to Ontario International Airport flight. Return flights start from Rs153,659. These fares may change depending on availability and demand.

  • Don't leave everything to the last moment. You're more likely to get cheap tickets from FCO to ONT if you book early. Airlines often have some excellent early bird deals.

  • The 'Whole month' tool shows you the cheapest flights from Leonardo da Vinci-Fiumicino Airport to Ontario International Airport throughout the month. It's an easy way to find a bargain if your travel plans are flexible.

  • Landing cheap flights from FCO to ONT is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch when fares go down.

  • Tailor your flights using filters. Choose your ideal arrival and departure times, airlines and total journey duration. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Leonardo da Vinci-Fiumicino Airport to Ontario International Airport.

Handy information about Leonardo da Vinci-Fiumicino Airport (FCO)

  • When it comes to the on-time performance of Leonardo da Vinci-Fiumicino Airport, data shows 70.57% of flights complete their journey on time.

  • Central Rome to Leonardo da Vinci-Fiumicino Airport is approximately 32 kilometres. Depending on traffic, it'll take about 40 minutes to get there if you're driving, ride-sharing or catching a cab.

  • The journey on public transport usually takes 50 minutes.

  • Searching for a convenient hotel near FCO? If you're boarding an early flight from Leonardo da Vinci-Fiumicino Airport to Ontario International Airport, these accommodation options will have you sleeping moments from your departure gate:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • ONT is located at 2900 E. Airport Drive.

  • Ontario International Airport to the centre of Ontario has a drive time of around 10 minutes. It's approximately 6 kilometres away.

  • Travelling by public transport takes around 1 hour 30 minutes.

When to fly to Ontario International Airport (ONT)

  • It's time to pick your dates for your flight from Leonardo da Vinci-Fiumicino Airport to Ontario International Airport. August is the most popular month to visit Ontario. If you like a more relaxed vibe, go in May.

  • The warmest month in Ontario is August, with the temperature ranging between 15ºC and 35ºC. Book your flights from Leonardo da Vinci-Fiumicino Airport to Ontario International Airport in this month if you like this kind of weather.

  • Search for cheap tickets from FCO to ONT in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 4ºC and 23ºC on average.

Explore more of United States

  • Ontario is easy to fall in love with, but there are so many other corners of United States waiting to be discovered. Around 56 kilometres west of Ontario, a visit to Los Angeles will keep your itinerary packed. Check out popular attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • Around 153 kilometres south of Ontario, San Diego is another essential stop in United States. Experience major highlights starting with San Diego Zoo, USS Midway Museum and SeaWorld San Diego.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.