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

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

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

United Airlines, Delta, and KLM are the most popular carriers operating from Ontario to Rome

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.

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 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 47% 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 4 as of January 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.

$226 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 $600 to $660. The lowest price recently found on this route was $445.

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Find the cheapest flights from Ontario to Rome

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:02 pm - 7:55 pm

ONT

FCO

18h 53m2 stops

1:10 pm - 11:59 pm

FCO

ONT

19h 49m1 stop

$445British Airways

Sun, Mar 22 - Wed, Apr 1

5:02 pm - 9:55 pm

ONT

FCO

19h 53m2 stops

7:50 am - 10:19 pm

FCO

ONT

23h 29m2 stops

$458British Airways

Wed, Feb 18 - Wed, Feb 25

4:45 pm - 7:20 pm

ONT

FCO

17h 35m2 stops

8:30 pm - 10:13 pm

FCO

ONT

34h 43m2 stops

$459British Airways

Wed, Jan 21 - Wed, Jan 28

10:30 pm - 9:45 am

ONT

FCO

26h 15m2 stops

12:40 pm - 11:58 pm

FCO

ONT

20h 18m2 stops

$462Delta

Sun, Jan 25 - Tue, Feb 10

4:45 pm - 7:55 pm

ONT

FCO

18h 10m2 stops

8:30 pm - 10:13 pm

FCO

ONT

34h 43m2 stops

$463British Airways

Sun, Jan 18 - Wed, Jan 28

10:30 pm - 10:30 am

ONT

FCO

27h 00m1 stop

12:40 pm - 11:31 am

FCO

ONT

31h 51m1 stop

$468Delta

Tue, Jan 20 - Fri, Jan 30

10:30 pm - 10:30 am

ONT

FCO

27h 00m1 stop

12:40 pm - 11:31 am

FCO

ONT

31h 51m1 stop

$469Delta

Sun, Jan 25 - Tue, Feb 10

12:19 pm - 10:45 pm

ONT

FCO

25h 26m2 stops

1:10 pm - 10:35 pm

FCO

ONT

18h 25m1 stop

$475British Airways

Sun, Apr 19 - Tue, Apr 28

7:16 am - 2:30 pm

ONT

FCO

22h 14m2 stops

7:50 am - 10:48 pm

FCO

ONT

23h 58m3 stops

$478American Airlines

Sun, Feb 1 - Wed, Feb 11

1:11 pm - 3:15 pm

ONT

FCO

41h 04m2 stops

12:40 pm - 11:31 am

FCO

ONT

31h 51m1 stop

$482Delta

Sat, Jan 24 - Tue, Feb 10

British Airways flights from Ontario to Rome

Our best British Airways deals on Ontario to Rome flight tickets

British Airways

Mar 22

ONT5:02 pmOntario

18h 53m

2 stops

FCO7:55 pmRome Fiumicino

Apr 1

FCO1:10 pmRome Fiumicino

19h 49m

1 stop

ONT11:59 pmOntario

$445

British Airways

Feb 18

ONT5:02 pmOntario

19h 53m

2 stops

FCO9:55 pmRome Fiumicino

Feb 25

FCO7:50 amRome Fiumicino

23h 29m

2 stops

ONT10:19 pmOntario

$458

British Airways

Jan 12

ONT4:45 pmOntario

20h 10m

2 stops

FCO9:55 pmRome Fiumicino

Jan 22

FCO8:10 pmRome Fiumicino

35h 03m

2 stops

ONT10:13 pmOntario

$459

Delta flights from Ontario to Rome

Our best Delta deals on Ontario to Rome flight tickets

Delta

Jan 25

ONT10:30 pmOntario

26h 15m

2 stops

FCO9:45 amRome Fiumicino

Feb 10

FCO12:40 pmRome Fiumicino

20h 18m

2 stops

ONT11:58 pmOntario

$462

Delta

Jan 20

ONT10:30 pmOntario

27h 00m

1 stop

FCO10:30 amRome Fiumicino

Jan 30

FCO12:40 pmRome Fiumicino

31h 51m

1 stop

ONT11:31 amOntario

$468

Delta

Jan 18

ONT10:30 pmOntario

27h 00m

1 stop

FCO10:30 amRome Fiumicino

Feb 5

FCO12:40 pmRome Fiumicino

31h 51m

1 stop

ONT11:31 amOntario

$469

Fly from

Fly to

Route

Depart

Return

Price

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 3/22

5:02 pm-7:55 pm

2 stops18h 53m

Rome Fiumicino

Wed 4/1

1:10 pm-11:59 pm

1 stop19h 49m

$445

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/18

5:02 pm-9:55 pm

2 stops19h 53m

Rome Fiumicino

Wed 2/25

7:50 am-10:19 pm

2 stops23h 29m

$458

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 1/21

4:45 pm-7:20 pm

2 stops17h 35m

Rome Fiumicino

Wed 1/28

8:30 pm-10:13 pm

2 stops34h 43m

$459

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 1/25

10:30 pm-9:45 am

2 stops26h 15m

Rome Fiumicino

Tue 2/10

12:40 pm-11:58 pm

2 stops20h 18m

$462

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 1/18

4:45 pm-7:55 pm

2 stops18h 10m

Rome Fiumicino

Wed 1/28

8:30 pm-10:13 pm

2 stops34h 43m

$463

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 1/20

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Fri 1/30

12:40 pm-11:31 am

1 stop31h 51m

$468

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 1/25

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Tue 2/10

12:40 pm-11:31 am

1 stop31h 51m

$469

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 4/19

12:19 pm-10:45 pm

2 stops25h 26m

Rome Fiumicino

Tue 4/28

1:10 pm-10:35 pm

1 stop18h 25m

$475

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 2/1

7:16 am-2:30 pm

2 stops22h 14m

Rome Fiumicino

Wed 2/11

7:50 am-10:48 pm

3 stops23h 58m

$478

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 1/24

1:11 pm-3:15 pm

2 stops41h 04m

Rome Fiumicino

Tue 2/10

12:40 pm-11:31 am

1 stop31h 51m

$482

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 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 August. Flight prices, which tend to average around $570, 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 August, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $604.

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 $725. 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 $867.

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 $612. 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 $837. 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 61% 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	14h 19m
Direct flights	None

The fastest flight from Ontario to Rome takes 14h 19m

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

Search flight deals

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 14h 19m.
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 January 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 53% of the total bookings. Other popular airlines include British Airways with 31% and Delta with 16%.

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 8,029 reviews	Search Delta flights
British Airways	PriceFrom $487	Free Cancellation	Rating 6.7 7,659 reviews	Search British Airways flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.4 9,141 reviews	Search United Airlines flights
KLM	PriceFrom $520	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights

Fiumicino

Civitavecchia

Cassino

Pienza

Ponza

Montepulciano

Tivoli

Sperlonga

Gaeta

Orvieto

Cortona

Terracina

Chianciano Terme

Ciampino

Santa Marinella

Grosseto

Sabaudia

Ascoli Piceno

Saturnia

Orbetello

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.