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.

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

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

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 48% 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.

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.

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.

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 October 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.

$372 Cheap Flights from Ontario to Rome in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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 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 - 7:55 amONT-FCO

15h 50m1 stop

12:40 pm - 11:04 pmFCO-ONT

19h 24m1 stop

$466KLM

Find Deal

Wed, Nov 26 - Wed, Dec 10

7:05 am - 7:55 amONT-FCO

15h 50m1 stop

10:05 am - 7:42 pmFCO-ONT

18h 37m1 stop

$476Delta

Find Deal

Mon, Nov 17 - Wed, Nov 26

10:25 pm - 10:30 amONT-FCO

27h 05m1 stop

12:40 pm - 11:04 pmFCO-ONT

19h 24m1 stop

$482Delta

Find Deal

Mon, Dec 1 - Thu, Dec 11

5:40 am - 8:30 amONT-FCO

17h 50m2 stops

1:05 pm - 10:57 pmFCO-ONT

42h 52m3 stops

$495United Airlines

Find Deal

Wed, Feb 25 - Tue, Mar 3

7:00 am - 7:45 amONT-FCO

15h 45m1 stop

1:30 pm - 10:51 pmFCO-ONT

18h 21m2 stops

$503United Airlines

Find Deal

Tue, Nov 18 - Tue, Nov 25

10:30 pm - 10:30 amONT-FCO

27h 00m1 stop

12:40 pm - 11:38 amFCO-ONT

31h 58m1 stop

$506Multiple Airlines

Find Deal

Wed, Feb 4 - Wed, Feb 18

5:40 am - 11:05 amONT-FCO

20h 25m2 stops

12:15 pm - 12:33 pmFCO-ONT

32h 18m2 stops

$518Air Canada

Find Deal

Mon, Mar 2 - Wed, Mar 11

4:47 pm - 9:55 pmONT-FCO

20h 08m2 stops

7:50 am - 9:59 pmFCO-ONT

23h 09m2 stops

$531British Airways

Find Deal

Mon, Nov 17 - Wed, Nov 26

1:00 pm - 7:45 pmONT-FCO

21h 45m2 stops

12:40 pm - 9:14 pmFCO-ONT

17h 34m1 stop

$560Multiple Airlines

Find Deal

Wed, Feb 25 - Tue, Mar 3

4:47 pm - 9:55 pmONT-FCO

20h 08m2 stops

8:35 am - 10:49 pmFCO-ONT

23h 14m2 stops

$571British Airways

Find Deal

Mon, Jan 5 - Fri, Jan 16

Delta flights from Ontario to Rome

Our best Delta deals on Ontario to Rome flight tickets

Delta

Nov 17

ONT7:05 amOntario

15h 50m

1 stop

FCO7:55 amRome Fiumicino

Nov 26

FCO10:05 amRome Fiumicino

18h 37m

1 stop

ONT7:42 pmOntario

$476

Find similar

Delta

Dec 1

ONT10:25 pmOntario

27h 05m

1 stop

FCO10:30 amRome Fiumicino

Dec 11

FCO12:40 pmRome Fiumicino

19h 24m

1 stop

ONT11:04 pmOntario

$482

Find similar

Delta

Nov 16

ONT10:25 pmOntario

24h 30m

1 stop

FCO7:55 amRome Fiumicino

Nov 26

FCO6:10 amRome Fiumicino

25h 45m

2 stops

ONT10:55 pmOntario

$492

Find similar

British Airways flights from Ontario to Rome

Our best British Airways deals on Ontario to Rome flight tickets

British Airways

Nov 17

ONT4:47 pmOntario

20h 08m

2 stops

FCO9:55 pmRome Fiumicino

Nov 26

FCO7:50 amRome Fiumicino

23h 09m

2 stops

ONT9:59 pmOntario

$531

Find similar

British Airways

Jan 5

ONT4:47 pmOntario

20h 08m

2 stops

FCO9:55 pmRome Fiumicino

Jan 16

FCO8:35 amRome Fiumicino

23h 14m

2 stops

ONT10:49 pmOntario

$571

Find similar

British Airways

Apr 1

ONT5:02 pmOntario

21h 03m

2 stops

FCO11:05 pmRome Fiumicino

Apr 28

FCO1:25 pmRome Fiumicino

17h 31m

1 stop

ONT9:56 pmOntario

$578

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/26

7:05 am-7:55 am

1 stop15h 50m

Rome Fiumicino

Wed 12/10

12:40 pm-11:04 pm

1 stop19h 24m

$466

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 11/17

7:05 am-7:55 am

1 stop15h 50m

Rome Fiumicino

Wed 11/26

10:05 am-7:42 pm

1 stop18h 37m

$476

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 12/1

10:25 pm-10:30 am

1 stop27h 05m

Rome Fiumicino

Thu 12/11

12:40 pm-11:04 pm

1 stop19h 24m

$482

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

5:40 am-8:30 am

2 stops17h 50m

Rome Fiumicino

Tue 3/3

1:05 pm-10:57 pm

3 stops42h 52m

$495

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/18

7:00 am-7:45 am

1 stop15h 45m

Rome Fiumicino

Tue 11/25

1:30 pm-10:51 pm

2 stops18h 21m

$503

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/4

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Wed 2/18

12:40 pm-11:38 am

1 stop31h 58m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 3/2

5:40 am-11:05 am

2 stops20h 25m

Rome Fiumicino

Wed 3/11

12:15 pm-12:33 pm

2 stops32h 18m

$518

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 11/17

4:47 pm-9:55 pm

2 stops20h 08m

Rome Fiumicino

Wed 11/26

7:50 am-9:59 pm

2 stops23h 09m

$531

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

1:00 pm-7:45 pm

2 stops21h 45m

Rome Fiumicino

Tue 3/3

12:40 pm-9:14 pm

1 stop17h 34m

$560

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 1/5

4:47 pm-9:55 pm

2 stops20h 08m

Rome Fiumicino

Fri 1/16

8:35 am-10:49 pm

2 stops23h 14m

$571

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 $722. 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 $874.

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 $851. 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.

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 20m.
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 October 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 43% of the total bookings. Other popular airlines include British Airways with 28%, Delta with 18%, and KLM with 11%.

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 7,969 reviews	Search Delta flights
British Airways	PriceFrom $514	Free Cancellation	Rating 6.7 7,436 reviews	Search British Airways flights
KLM	PriceFrom $520	Free Cancellation	Rating 7.7 1,396 reviews	Search KLM flights
United Airlines	PriceFrom $570	Free Cancellation	Rating 7.4 8,957 reviews	Search United Airlines flights

Fiumicino

Civitavecchia

Cassino

Pienza

Ponza

Gaeta

Tivoli

Sperlonga

Ciampino

Montepulciano

Orvieto

Cortona

Terracina

Ascoli Piceno

Santa Marinella

Grosseto

Sabaudia

Saturnia

Anzio

Chianciano Terme

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.