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

United Airlines is the most popular carrier operating from Ontario to Rome

What airlines fly to Rome?

ITA Airways, United Airlines and Norse Atlantic Airways are the top three most popular airlines that fly to Rome from Ontario according to our data. ITA Airways is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Rome. Keep in mind that there are 20 different airlines that fly to Rome on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ontario Airport to Rome refresh daily.

How many operators does momondo search for flights from Ontario Airport to Rome?

The number of operators available for flights from Ontario Airport to Rome is 3 as of June 2026.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Rome.

What documentation or ID do you need to fly to Rome?

The necessary travel and health documents for your Rome trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$342 Cheap Flights from Ontario to Rome in 2026

Q: What is the typical price of a round-trip flight between Ontario and Rome?

Prices are currently low for flights on this route. Typical prices usually range from $1,135 to $745. The lowest price recently found on this route was $718.

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Find the cheapest flights from Ontario to Rome

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:05 am - 10:50 am

ONT

FCO

18h 45m

1 stop

6:30 am - 4:24 pm

FCO

ONT

18h 54m

2 stops

$718Delta

Mon, Aug 3 - Wed, Aug 19

12:35 pm - 12:05 pm

ONT

FCO

14h 30m

1 stop

1:10 pm - 10:59 pm

FCO

ONT

18h 49m

1 stop

$719British Airways

Tue, Aug 4 - Thu, Aug 27

12:33 pm - 12:05 pm

ONT

FCO

14h 32m

1 stop

1:10 pm - 9:34 am

FCO

ONT

29h 24m

1 stop

$724British Airways

Wed, Aug 12 - Thu, Aug 20

7:05 am - 7:35 am

ONT

FCO

15h 30m

1 stop

1:10 pm - 9:52 pm

FCO

ONT

17h 42m

1 stop

$727Air France

Mon, Aug 17 - Fri, Aug 28

12:33 pm - 4:55 pm

ONT

FCO

19h 22m

2 stops

1:10 pm - 9:34 am

FCO

ONT

29h 24m

1 stop

$730British Airways

Wed, Aug 12 - Thu, Aug 20

9:43 am - 12:40 pm

ONT

FCO

17h 57m

2 stops

6:30 am - 4:24 pm

FCO

ONT

18h 54m

2 stops

$731Multiple Airlines

Tue, Aug 4 - Thu, Aug 27

5:05 pm - 6:45 pm

ONT

FCO

16h 40m

2 stops

12:45 pm - 11:34 pm

FCO

ONT

19h 49m

2 stops

$736KLM

Sun, Aug 16 - Fri, Aug 28

6:00 am - 12:05 pm

ONT

FCO

21h 05m

1 stop

1:10 pm - 10:37 pm

FCO

ONT

18h 27m

1 stop

$749British Airways

Mon, Aug 17 - Wed, Sep 9

12:59 pm - 4:00 pm

ONT

FCO

18h 01m

2 stops

1:10 pm - 10:37 pm

FCO

ONT

18h 27m

1 stop

$753American Airlines

Mon, Aug 17 - Wed, Sep 9

1:00 pm - 11:00 pm

ONT

FCO

25h 00m

2 stops

11:15 am - 8:20 pm

FCO

ONT

42h 05m

2 stops

$754United Airlines

Sun, Dec 6 - Thu, Dec 10

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British Airways flights from Ontario to Rome

Our best British Airways deals on Ontario to Rome flight tickets

British Airways

Aug 4

ONT12:35 pmOntario

14h 30m

1 stop

FCO12:05 pmRome Fiumicino

Aug 27

FCO1:10 pmRome Fiumicino

18h 49m

1 stop

ONT10:59 pmOntario

$719

British Airways

Aug 12

ONT12:33 pmOntario

14h 32m

1 stop

FCO12:05 pmRome Fiumicino

Aug 20

FCO1:10 pmRome Fiumicino

29h 24m

1 stop

ONT9:34 amOntario

$724

British Airways

Aug 12

ONT12:33 pmOntario

19h 22m

2 stops

FCO4:55 pmRome Fiumicino

Aug 20

FCO1:10 pmRome Fiumicino

29h 24m

1 stop

ONT9:34 amOntario

$730

Air France flights from Ontario to Rome

Our best Air France deals on Ontario to Rome flight tickets

Air France

Aug 17

ONT7:05 amOntario

15h 30m

1 stop

FCO7:35 amRome Fiumicino

Aug 28

FCO1:10 pmRome Fiumicino

17h 42m

1 stop

ONT9:52 pmOntario

$727

Air France

Oct 3

ONT11:59 amOntario

34h 36m

1 stop

FCO7:35 amRome Fiumicino

Oct 16

FCO6:05 amRome Fiumicino

19h 07m

2 stops

ONT4:12 pmOntario

$799

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/3

7:05 am-10:50 am

1 stop18h 45m

Rome Fiumicino

Wed 8/19

6:30 am-4:24 pm

2 stops18h 54m

$718

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/4

12:35 pm-12:05 pm

1 stop14h 30m

Rome Fiumicino

Thu 8/27

1:10 pm-10:59 pm

1 stop18h 49m

$719

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 8/12

12:33 pm-12:05 pm

1 stop14h 32m

Rome Fiumicino

Thu 8/20

1:10 pm-9:34 am

1 stop29h 24m

$724

Quickest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/17

7:05 am-7:35 am

1 stop15h 30m

Rome Fiumicino

Fri 8/28

1:10 pm-9:52 pm

1 stop17h 42m

$727

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 8/12

12:33 pm-4:55 pm

2 stops19h 22m

Rome Fiumicino

Thu 8/20

1:10 pm-9:34 am

1 stop29h 24m

$730

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/4

9:43 am-12:40 pm

2 stops17h 57m

Rome Fiumicino

Thu 8/27

6:30 am-4:24 pm

2 stops18h 54m

$731

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 8/16

5:05 pm-6:45 pm

2 stops16h 40m

Rome Fiumicino

Fri 8/28

12:45 pm-11:34 pm

2 stops19h 49m

$736

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/17

6:00 am-12:05 pm

1 stop21h 05m

Rome Fiumicino

Wed 9/9

1:10 pm-10:37 pm

1 stop18h 27m

$749

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/17

12:59 pm-4:00 pm

2 stops18h 01m

Rome Fiumicino

Wed 9/9

1:10 pm-10:37 pm

1 stop18h 27m

$753

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 12/6

1:00 pm-11:00 pm

2 stops25h 00m

Rome Fiumicino

Thu 12/10

11:15 am-8:20 pm

2 stops42h 05m

$754

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 Ontario to Rome

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

What is the typical price of a round-trip flight between Ontario and Rome?

What is the cheapest month to fly to Rome?

The cheapest month to fly to Rome from Ontario is in February. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Rome during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $325.

What is the cheapest day to depart on your flight to Rome?

The cheapest day to depart on your flight to Rome is on a Monday when prices can be found for as low as $717. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Rome on Sunday is $816.

What is the cheapest time of day to depart on your flight to Rome?

At noon is the cheapest time of day to fly from Ontario to Rome when you can find flight prices for as low as $538. Flying to Rome at noon is an ideal time because this is during off-peak travel hours. Flights to Rome are more costly in the afternoon, with an average ticket price of $822. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Ontario to Rome flights?

You could potentially save up to 46% on your flight if you consider stops on a Ontario to Rome flight.

When to book flights from Ontario to Rome

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

Estimated round-trip price

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

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

Fastest flight time	13h 55m
Direct flights	None

The fastest flight from Ontario to Rome takes 13h 55m

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

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Frequently asked questions about flying from Ontario to Rome

How far is Ontario to Rome by plane?
There are 6306.5 mi between Ontario and Rome. A reasonable flight in good conditions will take 13h 55m.
When did momondo last update prices for flights from Ontario Airport to Rome?
Prices for flights from Ontario Airport to Rome refresh daily.
How many operators does momondo search for flights from Ontario Airport to Rome?
The number of operators available for flights from Ontario Airport to Rome is 3 as of June 2026.
How old do you have to be to fly from Ontario Airport to Rome?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Rome.
What documentation or ID do you need to fly to Rome?
The necessary travel and health documents for your Rome trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Rome?
Based on momondo bookings for flights between Ontario and Rome, the leading airline is United Airlines, making up 66% of the total bookings. Other popular airlines include British Airways with 34%.

Best airlines flying from Ontario to Rome

Compare and see reviews for airlines that fly from Ontario to Rome with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $479	Free Cancellation	Rating 7.9 8,394 reviews	Search Delta flights
British Airways	PriceFrom $487	Free Cancellation	Rating 6.7 8,050 reviews	Search British Airways flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.4 9,826 reviews	Search United Airlines flights

Fiumicino

Civitavecchia

Cassino

Gaeta

Orvieto

Montepulciano

Ponza

Chianciano Terme

Ladispoli

Pienza

Sperlonga

Terracina

Saturnia

Ciampino

Santa Marinella

Anzio

Orbetello

Grosseto

Ascoli Piceno

Porto Ercole

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Rome. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Rome from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Rome from Ontario.

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

If you are simply researching potential flights to Rome, momondo offers a useful price alert feature which will track prices for flights to Rome from Ontario and alert you when they change.

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Cheap flights from Ontario to Rome from $342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Rome departing on 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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British Airways flights from Ontario to Rome

Our best British Airways deals on Ontario to Rome flight tickets

Air France flights from Ontario to Rome

Our best Air France deals on Ontario to Rome flight tickets

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How to get the cheapest flight ticket from Ontario to Rome

What is the typical price of a round-trip flight between Ontario and Rome?

What is the cheapest month to fly to Rome?

What is the cheapest day to depart on your flight to Rome?

What is the cheapest time of day to depart on your flight to Rome?

Can stopping save me money on Ontario to Rome flights?

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

What airlines fly to Rome?

When to book flights from Ontario to Rome

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario to Rome

Best airlines flying from Ontario to Rome

Compare and see reviews for airlines that fly from Ontario to Rome with momondo

Traveling to a place near Rome?

Why use momondo?

An easier way to manage your Rome trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Airports listed have a maximum distance of 14.7 mi from Rome

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List of cabin classes available on flights landing in Rome. Availability may vary depending on flight origin and airline.

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