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

British Airways, American Airlines, and United Airlines are the most popular carriers 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 56% of people opting to fly with this airline when traveling to Rome. Keep in mind that there are 21 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 2 as of July 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.

$335 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 typical for flights on this route. Typical prices usually range from $695 to $1,031. The lowest price recently found on this route was $745.

Discover deals from 900+ travel sites with momondo.

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.

6:46 am - 7:45 am

ONT

FCO

16h 59m

1 stop

9:55 am - 8:06 pm

FCO

ONT

19h 11m

2 stops

$745United Airlines

Mon, Oct 26 - Wed, Nov 11

7:05 am - 8:15 am

ONT

FCO

17h 10m

1 stop

6:10 am - 10:43 pm

FCO

ONT

25h 33m

2 stops

$746KLM

Sun, Oct 25 - Fri, Nov 6

12:18 pm - 11:20 am

ONT

FCO

15h 02m

1 stop

1:30 pm - 10:14 pm

FCO

ONT

17h 44m

1 stop

$747Multiple Airlines

Mon, Oct 26 - Wed, Nov 11

7:05 am - 9:35 am

ONT

FCO

18h 30m

2 stops

6:10 am - 5:17 pm

FCO

ONT

20h 07m

2 stops

$750KLM

Tue, Oct 27 - Tue, Nov 10

7:05 am - 9:35 am

ONT

FCO

18h 30m

2 stops

1:30 pm - 10:14 pm

FCO

ONT

17h 44m

1 stop

$751KLM

Tue, Oct 27 - Tue, Nov 10

12:00 pm - 11:20 am

ONT

FCO

14h 20m

1 stop

1:30 pm - 10:14 pm

FCO

ONT

17h 44m

1 stop

$753Multiple Airlines

Wed, Dec 9 - Wed, Dec 23

12:00 pm - 11:20 am

ONT

FCO

14h 20m

1 stop

1:30 pm - 10:14 pm

FCO

ONT

17h 44m

1 stop

$755Multiple Airlines

Wed, Nov 11 - Wed, Nov 25

6:10 am - 7:55 am

ONT

FCO

16h 45m

1 stop

11:30 am - 8:01 pm

FCO

ONT

41h 31m

2 stops

$756United Airlines

Mon, Aug 10 - Tue, Aug 25

1:18 pm - 12:20 pm

ONT

FCO

14h 02m

1 stop

11:30 am - 8:01 pm

FCO

ONT

41h 31m

2 stops

$757United Airlines

Mon, Aug 17 - Tue, Aug 25

12:04 pm - 1:15 pm

ONT

FCO

16h 11m

1 stop

3:15 pm - 11:04 am

FCO

ONT

28h 49m

1 stop

$758Alaska Airlines

Tue, Aug 11 - Tue, Aug 25

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KLM flights from Ontario to Rome

Our best KLM deals on Ontario to Rome flight tickets

KLM

Oct 25

ONT7:05 amOntario

17h 10m

1 stop

FCO8:15 amRome Fiumicino

Nov 6

FCO6:10 amRome Fiumicino

25h 33m

2 stops

ONT10:43 pmOntario

$746

KLM

Oct 27

ONT7:05 amOntario

18h 30m

2 stops

FCO9:35 amRome Fiumicino

Nov 10

FCO6:10 amRome Fiumicino

20h 07m

2 stops

ONT5:17 pmOntario

$750

KLM

Oct 27

ONT7:05 amOntario

18h 30m

2 stops

FCO9:35 amRome Fiumicino

Nov 10

FCO1:30 pmRome Fiumicino

17h 44m

1 stop

ONT10:14 pmOntario

$751

British Airways flights from Ontario to Rome

Our best British Airways deals on Ontario to Rome flight tickets

British Airways

Oct 25

ONT4:29 pmOntario

17h 21m

2 stops

FCO5:50 pmRome Fiumicino

Nov 6

FCO8:35 amRome Fiumicino

24h 22m

2 stops

ONT11:57 pmOntario

$776

British Airways

Oct 25

ONT11:59 pmOntario

26h 46m

1 stop

FCO10:45 amRome Fiumicino

Nov 6

FCO8:35 amRome Fiumicino

24h 22m

2 stops

ONT11:57 pmOntario

$784

British Airways

Aug 16

ONT12:33 pmOntario

14h 32m

1 stop

FCO12:05 pmRome Fiumicino

Aug 26

FCO1:10 pmRome Fiumicino

18h 49m

1 stop

ONT10:59 pmOntario

$786

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/26

6:46 am-7:45 am

1 stop16h 59m

Rome Fiumicino

Wed 11/11

9:55 am-8:06 pm

2 stops19h 11m

$745

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 10/25

7:05 am-8:15 am

1 stop17h 10m

Rome Fiumicino

Fri 11/6

6:10 am-10:43 pm

2 stops25h 33m

$746

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/26

12:18 pm-11:20 am

1 stop15h 02m

Rome Fiumicino

Wed 11/11

1:30 pm-10:14 pm

1 stop17h 44m

$747

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 10/27

7:05 am-9:35 am

2 stops18h 30m

Rome Fiumicino

Tue 11/10

6:10 am-5:17 pm

2 stops20h 07m

$750

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 10/27

7:05 am-9:35 am

2 stops18h 30m

Rome Fiumicino

Tue 11/10

1:30 pm-10:14 pm

1 stop17h 44m

$751

Quickest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 12/9

12:00 pm-11:20 am

1 stop14h 20m

Rome Fiumicino

Wed 12/23

1:30 pm-10:14 pm

1 stop17h 44m

$753

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/11

12:00 pm-11:20 am

1 stop14h 20m

Rome Fiumicino

Wed 11/25

1:30 pm-10:14 pm

1 stop17h 44m

$755

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/10

6:10 am-7:55 am

1 stop16h 45m

Rome Fiumicino

Tue 8/25

11:30 am-8:01 pm

2 stops41h 31m

$756

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/17

1:18 pm-12:20 pm

1 stop14h 02m

Rome Fiumicino

Tue 8/25

11:30 am-8:01 pm

2 stops41h 31m

$757

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/11

12:04 pm-1:15 pm

1 stop16h 11m

Rome Fiumicino

Tue 8/25

3:15 pm-11:04 am

1 stop28h 49m

$758

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 $741. 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 $853.

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 $531. 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 $845. 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 32% 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 42m
Direct flights	None

The fastest flight from Ontario to Rome takes 13h 42m

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 42m.
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 2 as of July 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 64% of the total bookings. Other popular airlines include British Airways with 36%.

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 7.8 8,464 reviews		Search Delta flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.4 9,983 reviews		Search United Airlines flights

Fiumicino

Civitavecchia

Cassino

Gaeta

Orvieto

Montepulciano

Ponza

Ladispoli

Chianciano Terme

Pienza

Tivoli

Terracina

Sperlonga

Orbetello

Ciampino

Saturnia

Santa Marinella

Ascoli Piceno

Porto Ercole

Sabaudia

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 $335

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 10/21. 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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KLM flights from Ontario to Rome

Our best KLM 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

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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

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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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