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

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

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

Iberia, KLM, and Delta are the most popular carriers operating from Ontario to Rome Fiumicino

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

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

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

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

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

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

What airlines fly to Rome Fiumicino Airport?

ITA Airways, Norse Atlantic Airways and British Airways are the top three most popular airlines that fly to Rome Fiumicino Airport from Ontario according to our data. ITA Airways is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Rome Fiumicino Airport. Keep in mind that there are 22 different airlines that fly to Rome Fiumicino Airport 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 Fiumicino Airport?

Prices for flights from Ontario Airport to Rome Fiumicino Airport are updated daily.

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

As of September 2025, there are 4 operators available to choose from for flights from Ontario Airport to Rome Fiumicino Airport.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Rome Fiumicino Airport.

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

The travel and health documents required for your trip to Rome Fiumicino Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Rome Fiumicino Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$291 Cheap Flights from Ontario to Rome Fiumicino Airport (ONT-FCO) in 2025

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Find the cheapest flights from Ontario to Rome (ONT-FCO)

Round-trip

One-way

Last minute

Cheap round-trip flights

10:30 pm - 10:30 amONT-FCO

27h 00m1 stop

12:40 pm - 11:38 amFCO-ONT

31h 58m1 stop

$468Delta

Find Deal

Tue, Jan 13 - Tue, Jan 20

6:36 pm - 1:40 pmONT-FCO

34h 04m1 stop

1:30 pm - 10:51 pmFCO-ONT

18h 21m2 stops

$470United Airlines

Find Deal

Mon, Oct 20 - Wed, Nov 5

6:36 pm - 1:40 pmONT-FCO

34h 04m1 stop

9:45 am - 10:51 pmFCO-ONT

22h 06m2 stops

$472United Airlines

Find Deal

Mon, Oct 20 - Wed, Nov 5

6:36 pm - 1:40 pmONT-FCO

34h 04m1 stop

7:05 am - 5:34 pmFCO-ONT

19h 29m2 stops

$473United Airlines

Find Deal

Mon, Oct 20 - Tue, Nov 4

7:05 am - 7:55 amONT-FCO

15h 50m1 stop

12:40 pm - 11:03 pmFCO-ONT

19h 23m1 stop

$475Delta

Find Deal

Mon, Dec 8 - Thu, Dec 18

6:00 am - 7:55 amONT-FCO

16h 55m2 stops

12:40 pm - 11:03 pmFCO-ONT

19h 23m1 stop

$479Delta

Find Deal

Tue, Dec 9 - Thu, Dec 18

6:00 am - 7:55 amONT-FCO

16h 55m2 stops

10:05 am - 11:04 pmFCO-ONT

21h 59m2 stops

$480KLM

Find Deal

Tue, Nov 11 - Tue, Nov 25

11:36 am - 7:55 amONT-FCO

35h 19m1 stop

10:05 am - 7:37 pmFCO-ONT

18h 32m1 stop

$516KLM

Find Deal

Sat, Nov 8 - Mon, Nov 17

4:47 pm - 9:55 pmONT-FCO

20h 08m2 stops

7:25 am - 10:23 pmFCO-ONT

23h 58m2 stops

$520British Airways

Find Deal

Tue, Nov 4 - Tue, Nov 25

5:03 pm - 9:55 pmONT-FCO

19h 52m2 stops

8:35 am - 9:57 pmFCO-ONT

22h 22m2 stops

$541British Airways

Find Deal

Wed, Feb 11 - Sat, Feb 21

Delta flights from Ontario to Rome Fiumicino Airport

Our best Delta deals on Ontario to Rome Fiumicino Airport flight tickets

Delta

Jan 13

ONT10:30 pmOntario

27h 00m

1 stop

FCO10:30 amRome Fiumicino

Jan 20

FCO12:40 pmRome Fiumicino

31h 58m

1 stop

ONT11:38 amOntario

$468

Find similar

Delta

Dec 8

ONT7:05 amOntario

15h 50m

1 stop

FCO7:55 amRome Fiumicino

Dec 18

FCO12:40 pmRome Fiumicino

19h 23m

1 stop

ONT11:03 pmOntario

$475

Find similar

Delta

Dec 9

ONT6:00 amOntario

16h 55m

2 stops

FCO7:55 amRome Fiumicino

Dec 18

FCO12:40 pmRome Fiumicino

19h 23m

1 stop

ONT11:03 pmOntario

$479

Find similar

United Airlines flights from Ontario to Rome Fiumicino Airport

Our best United Airlines deals on Ontario to Rome Fiumicino Airport flight tickets

United Airlines

Oct 20

ONT6:36 pmOntario

34h 04m

1 stop

FCO1:40 pmRome Fiumicino

Nov 5

FCO1:30 pmRome Fiumicino

18h 21m

2 stops

ONT10:51 pmOntario

$470

Find similar

United Airlines

Oct 20

ONT6:36 pmOntario

34h 04m

1 stop

FCO1:40 pmRome Fiumicino

Nov 5

FCO9:45 amRome Fiumicino

22h 06m

2 stops

ONT10:51 pmOntario

$472

Find similar

United Airlines

Oct 20

ONT6:36 pmOntario

34h 04m

1 stop

FCO1:40 pmRome Fiumicino

Nov 4

FCO7:05 amRome Fiumicino

19h 29m

2 stops

ONT5:34 pmOntario

$473

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Rome Fiumicino Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 1/13

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Tue 1/20

12:40 pm-11:38 am

1 stop31h 58m

$468

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/20

6:36 pm-1:40 pm

1 stop34h 04m

Rome Fiumicino

Wed 11/5

1:30 pm-10:51 pm

2 stops18h 21m

$470

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/20

6:36 pm-1:40 pm

1 stop34h 04m

Rome Fiumicino

Wed 11/5

9:45 am-10:51 pm

2 stops22h 06m

$472

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/20

6:36 pm-1:40 pm

1 stop34h 04m

Rome Fiumicino

Tue 11/4

7:05 am-5:34 pm

2 stops19h 29m

$473

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 12/8

7:05 am-7:55 am

1 stop15h 50m

Rome Fiumicino

Thu 12/18

12:40 pm-11:03 pm

1 stop19h 23m

$475

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 12/9

6:00 am-7:55 am

2 stops16h 55m

Rome Fiumicino

Thu 12/18

12:40 pm-11:03 pm

1 stop19h 23m

$479

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/11

6:00 am-7:55 am

2 stops16h 55m

Rome Fiumicino

Tue 11/25

10:05 am-11:04 pm

2 stops21h 59m

$480

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 11/8

11:36 am-7:55 am

1 stop35h 19m

Rome Fiumicino

Mon 11/17

10:05 am-7:37 pm

1 stop18h 32m

$516

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/4

4:47 pm-9:55 pm

2 stops20h 08m

Rome Fiumicino

Tue 11/25

7:25 am-10:23 pm

2 stops23h 58m

$520

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/11

5:03 pm-9:55 pm

2 stops19h 52m

Rome Fiumicino

Sat 2/21

8:35 am-9:57 pm

2 stops22h 22m

$541

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 Fiumicino Airport

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 Fiumicino Airport?

The cheapest month to fly to Rome Fiumicino Airport from Ontario is in February. Flight prices, which tend to average around $591, are often lower during this time because this is during the off-season. If you aren’t able to travel to Rome Fiumicino Airport during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $701.

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

Our data shows that Tuesday is the least expensive day to fly to Rome Fiumicino Airport. Tickets to fly out on this day can be as low as $739. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $884.

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

According to our data, the cheapest time of day to fly to Rome Fiumicino Airport is at noon. momondo users have found flights departing from Ontario to Rome Fiumicino Airport at noon for as low as $624. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $865.

Can stopping save me money on Ontario to Rome Fiumicino Airport flights?

You could potentially save up to 32% on your flight if you consider stops on a Ontario to Rome Fiumicino Airport flight.

When to book flights from Ontario to Rome Fiumicino Airport

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

Estimated round-trip price

Cheap Ontario to Rome Fiumicino Airport (ONT to FCO) flight deals and tips

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

Direct flights	None

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

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How far is Ontario to Rome Fiumicino by plane?
A flight from Ontario to Rome Fiumicino will travel around 6304.8 mi. A reasonable flight in good conditions will take 14h 27m.
When did momondo last update prices for flights from Ontario Airport to Rome Fiumicino Airport?
Prices for flights from Ontario Airport to Rome Fiumicino Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Rome Fiumicino Airport?
As of September 2025, there are 4 operators available to choose from for flights from Ontario Airport to Rome Fiumicino Airport.
How old do you have to be to fly from Ontario Airport to Rome Fiumicino Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Rome Fiumicino Airport.
What documentation or ID do you need to fly to Rome Fiumicino Airport?
The travel and health documents required for your trip to Rome Fiumicino Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Rome Fiumicino Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Ontario to Rome Fiumicino Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Rome Fiumicino Airport is United Airlines (51% of total bookings). The next most popular airlines are Delta (21%), KLM (16%), and British Airways (12%).

Best airlines flying from Ontario to Rome Fiumicino Airport

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $514	Free Cancellation	Rating 6.7 7,344 reviews	Search British Airways flights
Delta	PriceFrom $519	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights
KLM	PriceFrom $520	Free Cancellation	Rating 7.8 1,382 reviews	Search KLM flights
United Airlines	PriceFrom $569	Free Cancellation	Rating 7.4 8,937 reviews	Search United Airlines flights

Fiumicino

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Cassino

Ponza

Pienza

Gaeta

Tivoli

Sperlonga

Ciampino

Cortona

Orvieto

Montepulciano

Saturnia

Santa Marinella

Grosseto

Anzio

Sabaudia

Terracina

Ascoli Piceno

Foligno

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Rome for you.

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

momondo does allow users to show only those flights to Rome from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Rome.

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

Price alerts on flights to Rome from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Ontario to Rome from $291

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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Find the cheapest flights from Ontario to Rome (ONT-FCO)

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Delta flights from Ontario to Rome Fiumicino Airport

Our best Delta deals on Ontario to Rome Fiumicino Airport flight tickets

United Airlines flights from Ontario to Rome Fiumicino Airport

Our best United Airlines deals on Ontario to Rome Fiumicino Airport flight tickets

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Use the filters below to find and compare flights from Ontario to Rome Fiumicino Airport that are best for you.

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How to get the cheapest flight ticket from Ontario to Rome Fiumicino Airport

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

What is the cheapest month to fly to Rome Fiumicino Airport?

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

Our data shows that Tuesday is the least expensive day to fly to Rome Fiumicino Airport. Tickets to fly out on this day can be as low as $739. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $884.

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

Can stopping save me money on Ontario to Rome Fiumicino Airport flights?

You could potentially save up to 32% on your flight if you consider stops on a Ontario to Rome Fiumicino Airport flight.

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

Iberia, KLM, and Delta are the most popular carriers operating from Ontario to Rome Fiumicino

What airlines fly to Rome Fiumicino Airport?

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

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

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

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

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

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

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

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

When to book flights from Ontario to Rome Fiumicino Airport

Cheap Ontario to Rome Fiumicino Airport (ONT to FCO) flight deals and tips

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

Direct flights

How far is Ontario to Rome Fiumicino by plane?

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

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

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

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

What is the most popular airline from Ontario to Rome Fiumicino Airport?

Best airlines flying from Ontario to Rome Fiumicino Airport

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

Traveling to a place near Rome?

Why use momondo?

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

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

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

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

An easier way to manage your Rome Fiumicino Airport 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Rome

Popular cities in Italy

Popular flights according to clicks in the last 7 days on momondo