Which airport is the most popular layover for flights between Ontario and Rome?

San Francisco (SFO) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Ontario to Rome?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 13h 46m.

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

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

Which layover airport has the shortest connection time from Ontario to Rome?

Denver (DEN) has the shortest average layover time for this route: 1h 14m.

What airlines fly to Rome?

ITA Airways, Norse Atlantic Airways and United Airlines 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 46% of people opting to fly with this airline when traveling to Rome. Keep in mind that there are 22 different airlines that fly to Rome on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Ontario to Rome?

Flights via Denver (DEN) offer the lowest average round-trip price of $674.

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 4 as of November 2025.

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.

$234 Cheap Flights from Ontario to Rome in 2025/26

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Find the cheapest flights from Ontario to Rome

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One-way

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Cheap round-trip flights

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1:24 pm - 9:25 amONT-FCO

35h 01m2 stops

12:50 pm - 10:53 pmFCO-ONT

43h 03m2 stops

$490United Airlines

Find Deal

Thu, Jan 15 - Thu, Jan 29

6:00 am - 9:25 amONT-FCO

18h 25m2 stops

7:05 am - 5:43 pmFCO-ONT

19h 38m2 stops

$503United Airlines

Find Deal

Tue, Jan 20 - Tue, Jan 27

6:00 am - 8:30 amONT-FCO

41h 30m2 stops

1:05 pm - 12:48 pmFCO-ONT

56h 43m2 stops

$504United Airlines

Find Deal

Wed, Feb 25 - Tue, Mar 3

6:00 am - 8:30 amONT-FCO

41h 30m2 stops

12:45 pm - 12:47 pmFCO-ONT

57h 02m2 stops

$505United Airlines

Find Deal

Wed, Jan 28 - Sun, Feb 1

7:05 am - 7:55 amONT-FCO

15h 50m1 stop

10:05 am - 7:50 pmFCO-ONT

18h 45m1 stop

$506Delta

Find Deal

Wed, Dec 3 - Thu, Dec 25

6:00 am - 7:45 amONT-FCO

16h 45m2 stops

1:30 pm - 10:57 pmFCO-ONT

18h 27m2 stops

$507United Airlines

Find Deal

Thu, Feb 19 - Thu, Mar 5

5:15 am - 1:25 pmONT-FCO

24h 10m2 stops

6:50 am - 10:26 pmFCO-ONT

24h 36m2 stops

$509United Airlines

Find Deal

Tue, Mar 24 - Wed, Apr 1

7:05 am - 10:30 amONT-FCO

18h 25m1 stop

10:05 am - 11:58 pmFCO-ONT

22h 53m2 stops

$510Delta

Find Deal

Mon, Dec 8 - Tue, Dec 16

10:20 pm - 10:30 amONT-FCO

27h 10m1 stop

6:10 am - 9:07 pmFCO-ONT

23h 57m2 stops

$511KLM

Find Deal

Wed, Feb 25 - Tue, Mar 3

6:39 pm - 11:00 pmONT-FCO

19h 21m2 stops

7:00 am - 10:53 pmFCO-ONT

24h 53m2 stops

$513United Airlines

Find Deal

Fri, Jan 9 - Tue, Jan 13

Delta flights from Ontario to Rome

Our best Delta deals on Ontario to Rome flight tickets

Delta

Nov 25

ONT7:05 amOntario

18h 25m

1 stop

FCO10:30 amRome Fiumicino

Dec 9

FCO12:40 pmRome Fiumicino

19h 24m

1 stop

ONT11:04 pmOntario

$497

Find similar

Delta

Nov 26

ONT7:05 amOntario

15h 50m

1 stop

FCO7:55 amRome Fiumicino

Dec 5

FCO10:05 amRome Fiumicino

21h 59m

1 stop

ONT11:04 pmOntario

$506

Find similar

Delta

Nov 30

ONT7:05 amOntario

18h 25m

1 stop

FCO10:30 amRome Fiumicino

Dec 24

FCO12:40 pmRome Fiumicino

30h 20m

1 stop

ONT10:00 amOntario

$511

Find similar

United Airlines flights from Ontario to Rome

Our best United Airlines deals on Ontario to Rome flight tickets

United Airlines

Dec 2

ONT1:34 pmOntario

34h 51m

2 stops

FCO9:25 amRome Fiumicino

Dec 11

FCO10:55 amRome Fiumicino

44h 54m

2 stops

ONT10:49 pmOntario

$489

Find similar

United Airlines

Jan 15

ONT1:24 pmOntario

35h 01m

2 stops

FCO9:25 amRome Fiumicino

Jan 29

FCO12:50 pmRome Fiumicino

43h 03m

2 stops

ONT10:53 pmOntario

$490

Find similar

United Airlines

Dec 1

ONT7:00 amOntario

15h 45m

1 stop

FCO7:45 amRome Fiumicino

Jan 30

FCO1:35 pmRome Fiumicino

18h 18m

2 stops

ONT10:53 pmOntario

$502

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioRome

ONT - FCO

ONTFCO

Ontario

Thu 1/15

1:24 pm-9:25 am

2 stops35h 01m

Rome Fiumicino

Thu 1/29

12:50 pm-10:53 pm

2 stops43h 03m

$490

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 1/20

6:00 am-9:25 am

2 stops18h 25m

Rome Fiumicino

Tue 1/27

7:05 am-5:43 pm

2 stops19h 38m

$503

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

6:00 am-8:30 am

2 stops41h 30m

Rome Fiumicino

Tue 3/3

1:05 pm-12:48 pm

2 stops56h 43m

$504

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 1/28

6:00 am-8:30 am

2 stops41h 30m

Rome Fiumicino

Sun 2/1

12:45 pm-12:47 pm

2 stops57h 02m

$505

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 12/3

7:05 am-7:55 am

1 stop15h 50m

Rome Fiumicino

Thu 12/25

10:05 am-7:50 pm

1 stop18h 45m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

Thu 2/19

6:00 am-7:45 am

2 stops16h 45m

Rome Fiumicino

Thu 3/5

1:30 pm-10:57 pm

2 stops18h 27m

$507

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 3/24

5:15 am-1:25 pm

2 stops24h 10m

Rome Fiumicino

Wed 4/1

6:50 am-10:26 pm

2 stops24h 36m

$509

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 12/8

7:05 am-10:30 am

1 stop18h 25m

Rome Fiumicino

Tue 12/16

10:05 am-11:58 pm

2 stops22h 53m

$510

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

10:20 pm-10:30 am

1 stop27h 10m

Rome Fiumicino

Tue 3/3

6:10 am-9:07 pm

2 stops23h 57m

$511

OntarioRome

ONT - FCO

ONTFCO

Ontario

Fri 1/9

6:39 pm-11:00 pm

2 stops19h 21m

Rome Fiumicino

Tue 1/13

7:00 am-10:53 pm

2 stops24h 53m

$513

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

Layovers

What is the cheapest month to fly to Rome?

The cheapest month to fly to Rome from Ontario is in December. Flight prices, which tend to average around $508, 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 December, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $574.

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 Tuesday when prices can be found for as low as $723. 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 $873.

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 $618. 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 17% 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

Direct flights	None

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

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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 15h 50m.
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 4 as of November 2025.
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 46% of the total bookings. Other popular airlines include British Airways with 32% and Delta with 22%.

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 7,993 reviews	Search Delta flights
British Airways	PriceFrom $487	Free Cancellation	Rating 6.7 7,535 reviews	Search British Airways flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.4 9,039 reviews	Search United Airlines flights
KLM	PriceFrom $520	Free Cancellation	Rating 7.7 1,419 reviews	Search KLM flights

Fiumicino

Civitavecchia

Cassino

Pienza

Ponza

Montepulciano

Gaeta

Tivoli

Sperlonga

Orvieto

Ciampino

Cortona

Terracina

Ascoli Piceno

Santa Marinella

Grosseto

Chianciano Terme

Sabaudia

Saturnia

Foligno

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.