What is the cheapest airline that flies from Rome to Ontario?

Iberia, British Airways, and American Airlines are the most popular carriers operating from Rome to Ontario

What airlines fly to Ontario?

ITA Airways, Norse Atlantic Airways and British Airways are the top three most popular airlines that fly to Ontario from Rome according to our data. ITA Airways is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 4 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Rome to Ontario Airport?

Prices for flights from Rome to Ontario Airport refresh daily.

How old do you have to be to fly from Rome to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rome to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$447 Cheap Flights from Rome to Ontario in 2026

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Rome to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:40 am - 10:57 pm

FCO

ONT

22h 17m

2 stops

1:45 pm - 6:15 pm

ONT

FCO

19h 30m

2 stops

$598United Airlines

Thu, Feb 19 - Thu, Feb 26

1:10 pm - 10:06 am

FCO

ONT

29h 56m

1 stop

6:00 am - 12:05 pm

ONT

FCO

21h 05m

1 stop

$604British Airways

Wed, Apr 1 - Wed, Apr 8

10:30 am - 11:18 am

FCO

ONT

33h 48m

3 stops

6:00 am - 8:30 am

ONT

FCO

41h 30m

2 stops

$608United Airlines

Thu, Feb 5 - Mon, Feb 9

11:35 am - 9:06 am

FCO

ONT

30h 31m

1 stop

7:30 am - 12:05 pm

ONT

FCO

19h 35m

1 stop

$609British Airways

Sat, Mar 7 - Thu, Apr 9

7:00 am - 5:43 pm

FCO

ONT

19h 43m

2 stops

1:45 pm - 6:15 pm

ONT

FCO

19h 30m

2 stops

$612United Airlines

Sun, Feb 1 - Sat, Feb 28

1:10 pm - 10:36 pm

FCO

ONT

18h 26m

1 stop

2:22 pm - 12:05 pm

ONT

FCO

36h 43m

1 stop

$614British Airways

Thu, May 21 - Wed, May 27

7:00 am - 5:38 pm

FCO

ONT

19h 38m

2 stops

7:00 am - 7:55 am

ONT

FCO

15h 55m

1 stop

$635United Airlines

Sat, Mar 7 - Thu, Apr 9

2:20 pm - 8:36 pm

FCO

ONT

15h 16m

1 stop

11:05 am - 1:20 pm

ONT

FCO

17h 15m

1 stop

$638United Airlines

Thu, Apr 2 - Mon, Apr 13

3:40 pm - 10:59 pm

FCO

ONT

16h 19m

1 stop

1:33 pm - 1:20 pm

ONT

FCO

14h 47m

1 stop

$639United Airlines

Wed, May 20 - Wed, May 27

2:20 pm - 8:36 pm

FCO

ONT

15h 16m

1 stop

10:37 am - 1:20 pm

ONT

FCO

17h 43m

1 stop

$642United Airlines

Thu, Apr 30 - Sun, May 17

United Airlines flights from Rome to Ontario

Our best United Airlines deals on Rome to Ontario flight tickets

United Airlines

Feb 19

FCO9:40 amRome Fiumicino

22h 17m

2 stops

ONT10:57 pmOntario

Feb 26

ONT1:45 pmOntario

19h 30m

2 stops

FCO6:15 pmRome Fiumicino

$598

United Airlines

Feb 5

FCO10:30 amRome Fiumicino

33h 48m

3 stops

ONT11:18 amOntario

Feb 9

ONT6:00 amOntario

41h 30m

2 stops

FCO8:30 amRome Fiumicino

$608

United Airlines

Feb 1

FCO7:00 amRome Fiumicino

19h 43m

2 stops

ONT5:43 pmOntario

Feb 28

ONT1:45 pmOntario

19h 30m

2 stops

FCO6:15 pmRome Fiumicino

$612

British Airways flights from Rome to Ontario

Our best British Airways deals on Rome to Ontario flight tickets

British Airways

Apr 1

FCO1:10 pmRome Fiumicino

29h 56m

1 stop

ONT10:06 amOntario

Apr 8

ONT6:00 amOntario

21h 05m

1 stop

FCO12:05 pmRome Fiumicino

$604

British Airways

Mar 7

FCO11:35 amRome Fiumicino

30h 31m

1 stop

ONT9:06 amOntario

Apr 9

ONT7:30 amOntario

19h 35m

1 stop

FCO12:05 pmRome Fiumicino

$609

British Airways

May 21

FCO1:10 pmRome Fiumicino

18h 26m

1 stop

ONT10:36 pmOntario

May 27

ONT2:22 pmOntario

36h 43m

1 stop

FCO12:05 pmRome Fiumicino

$614

Fly from

Fly to

Route

Depart

Return

Price

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Thu 2/19

9:40 am-10:57 pm

2 stops22h 17m

Ontario

Thu 2/26

1:45 pm-6:15 pm

2 stops19h 30m

$598

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Wed 4/1

1:10 pm-10:06 am

1 stop29h 56m

Ontario

Wed 4/8

6:00 am-12:05 pm

1 stop21h 05m

$604

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Thu 2/5

10:30 am-11:18 am

3 stops33h 48m

Ontario

Mon 2/9

6:00 am-8:30 am

2 stops41h 30m

$608

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Sat 3/7

11:35 am-9:06 am

1 stop30h 31m

Ontario

Thu 4/9

7:30 am-12:05 pm

1 stop19h 35m

$609

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Sun 2/1

7:00 am-5:43 pm

2 stops19h 43m

Ontario

Sat 2/28

1:45 pm-6:15 pm

2 stops19h 30m

$612

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Thu 5/21

1:10 pm-10:36 pm

1 stop18h 26m

Ontario

Wed 5/27

2:22 pm-12:05 pm

1 stop36h 43m

$614

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Sat 3/7

7:00 am-5:38 pm

2 stops19h 38m

Ontario

Thu 4/9

7:00 am-7:55 am

1 stop15h 55m

$635

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Thu 4/2

2:20 pm-8:36 pm

1 stop15h 16m

Ontario

Mon 4/13

11:05 am-1:20 pm

1 stop17h 15m

$638

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Wed 5/20

3:40 pm-10:59 pm

1 stop16h 19m

Ontario

Wed 5/27

1:33 pm-1:20 pm

1 stop14h 47m

$639

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Thu 4/30

2:20 pm-8:36 pm

1 stop15h 16m

Ontario

Sun 5/17

10:37 am-1:20 pm

1 stop17h 43m

$642

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Rome to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Rome to Ontario flights?

You could potentially save up to 10% on your flight if you consider stops on a Rome to Ontario flight.

When to book flights from Rome to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Rome to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Rome to Ontario (ROM to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rome to Ontario

Fastest flight time	15h 16m
Direct flights	None

The fastest flight from Rome to Ontario takes 15h 16m

There are no direct flights from Rome to Ontario. There are no popular flight routes from Rome to Ontario.

Search flight deals

How far is Rome to Ontario by plane?
A flight from Rome to Ontario will travel around 6306.5 mi. A reasonable flight in good conditions will take 15h 16m.
When did momondo last update prices for flights from Rome to Ontario Airport?
Prices for flights from Rome to Ontario Airport refresh daily.
How old do you have to be to fly from Rome to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rome to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Rome to Ontario?

It is quick and easy to find Rome to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from Rome to Ontario with flexible booking policies on momondo?

Flights from Rome to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Rome to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Rome to Ontario.

I’m not ready to book a flight from Rome to Ontario right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Rome to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.