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 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 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 airlines fly to Rome Fiumicino Airport?

ITA Airways, Norse Atlantic Airways and United Airlines 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 45% 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.

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.

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

United Airlines is the most popular carrier operating from Ontario to Rome Fiumicino

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 December 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.

$226 Cheap Flights from Ontario to Rome Fiumicino Airport in 2025/26

Q: What is the typical price of a round-trip flight between Ontario and Rome Fiumicino Airport?

Prices are currently low for flights on this route. Typical prices usually range from $570 to $1,474. The lowest price recently found on this route was $495.

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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.

4:45 pm - 9:55 pm

ONT

FCO

20h 10m2 stops

11:35 am - 10:30 pm

FCO

ONT

18h 55m1 stop

$495British Airways

dim., janv. 25 - lun., mars 9

5:00 am - 8:30 am

ONT

FCO

42h 30m2 stops

1:05 pm - 12:48 pm

FCO

ONT

56h 43m2 stops

$500United Airlines

mer., févr. 25 - mar., mars 3

1:24 pm - 9:25 am

ONT

FCO

35h 01m2 stops

11:15 am - 12:47 pm

FCO

ONT

34h 32m2 stops

$504Air Canada

sam., janv. 17 - sam., janv. 31

5:05 am - 7:55 am

ONT

FCO

17h 50m2 stops

7:00 am - 8:58 pm

FCO

ONT

22h 58m2 stops

$506United Airlines

mer., janv. 21 - lun., janv. 26

5:06 pm - 9:55 pm

ONT

FCO

19h 49m2 stops

11:10 am - 10:49 pm

FCO

ONT

20h 39m2 stops

$507British Airways

mar., févr. 17 - jeu., févr. 26

5:05 am - 8:30 am

ONT

FCO

18h 25m2 stops

9:40 am - 10:53 pm

FCO

ONT

22h 13m2 stops

$509United Airlines

jeu., janv. 29 - sam., févr. 7

7:30 am - 3:15 pm

ONT

FCO

22h 45m2 stops

6:10 am - 9:05 pm

FCO

ONT

23h 55m2 stops

$511Delta

mer., janv. 14 - mer., janv. 21

10:20 pm - 10:30 am

ONT

FCO

27h 10m1 stop

6:10 am - 9:05 pm

FCO

ONT

23h 55m2 stops

$512KLM

mer., févr. 25 - mar., mars 3

1:24 pm - 1:25 pm

ONT

FCO

39h 01m2 stops

7:00 am - 10:53 pm

FCO

ONT

24h 53m2 stops

$514United Airlines

mer., janv. 14 - dim., janv. 18

6:00 am - 3:15 pm

ONT

FCO

24h 15m2 stops

12:40 pm - 11:31 am

FCO

ONT

31h 51m1 stop

$515Delta

sam., janv. 17 - sam., janv. 31

British Airways flights from Ontario to Rome Fiumicino Airport

Our best British Airways deals on Ontario to Rome Fiumicino Airport flight tickets

British Airways

Jan 25

ONT4:45 pmOntario

20h 10m

2 stops

FCO9:55 pmRome Fiumicino

Mar 9

FCO11:35 amRome Fiumicino

18h 55m

1 stop

ONT10:30 pmOntario

$495

Find similar

British Airways

Feb 17

ONT5:06 pmOntario

19h 49m

2 stops

FCO9:55 pmRome Fiumicino

Feb 26

FCO11:10 amRome Fiumicino

20h 39m

2 stops

ONT10:49 pmOntario

$507

Find similar

British Airways

Mar 23

ONT5:02 pmOntario

20h 53m

2 stops

FCO9:55 pmRome Fiumicino

Apr 8

FCO1:25 pmRome Fiumicino

19h 15m

1 stop

ONT11:40 pmOntario

$525

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

Feb 25

ONT5:00 amOntario

42h 30m

2 stops

FCO8:30 amRome Fiumicino

Mar 3

FCO1:05 pmRome Fiumicino

56h 43m

2 stops

ONT12:48 pmOntario

$500

Find similar

United Airlines

Jan 21

ONT5:05 amOntario

17h 50m

2 stops

FCO7:55 amRome Fiumicino

Jan 26

FCO7:00 amRome Fiumicino

22h 58m

2 stops

ONT8:58 pmOntario

$506

Find similar

United Airlines

Jan 29

ONT5:05 amOntario

18h 25m

2 stops

FCO8:30 amRome Fiumicino

Feb 7

FCO9:40 amRome Fiumicino

22h 13m

2 stops

ONT10:53 pmOntario

$509

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

dim. 1/25

4:45 pm-9:55 pm

2 stops20h 10m

Rome Fiumicino

lun. 3/9

11:35 am-10:30 pm

1 stop18h 55m

$495

OntarioRome

ONT - FCO

ONTFCO

Ontario

mer. 2/25

5:00 am-8:30 am

2 stops42h 30m

Rome Fiumicino

mar. 3/3

1:05 pm-12:48 pm

2 stops56h 43m

$500

OntarioRome

ONT - FCO

ONTFCO

Ontario

sam. 1/17

1:24 pm-9:25 am

2 stops35h 01m

Rome Fiumicino

sam. 1/31

11:15 am-12:47 pm

2 stops34h 32m

$504

OntarioRome

ONT - FCO

ONTFCO

Ontario

mer. 1/21

5:05 am-7:55 am

2 stops17h 50m

Rome Fiumicino

lun. 1/26

7:00 am-8:58 pm

2 stops22h 58m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 2/17

5:06 pm-9:55 pm

2 stops19h 49m

Rome Fiumicino

jeu. 2/26

11:10 am-10:49 pm

2 stops20h 39m

$507

OntarioRome

ONT - FCO

ONTFCO

Ontario

jeu. 1/29

5:05 am-8:30 am

2 stops18h 25m

Rome Fiumicino

sam. 2/7

9:40 am-10:53 pm

2 stops22h 13m

$509

OntarioRome

ONT - FCO

ONTFCO

Ontario

mer. 1/14

7:30 am-3:15 pm

2 stops22h 45m

Rome Fiumicino

mer. 1/21

6:10 am-9:05 pm

2 stops23h 55m

$511

OntarioRome

ONT - FCO

ONTFCO

Ontario

mer. 2/25

10:20 pm-10:30 am

1 stop27h 10m

Rome Fiumicino

mar. 3/3

6:10 am-9:05 pm

2 stops23h 55m

$512

OntarioRome

ONT - FCO

ONTFCO

Ontario

mer. 1/14

1:24 pm-1:25 pm

2 stops39h 01m

Rome Fiumicino

dim. 1/18

7:00 am-10:53 pm

2 stops24h 53m

$514

OntarioRome

ONT - FCO

ONTFCO

Ontario

sam. 1/17

6:00 am-3:15 pm

2 stops24h 15m

Rome Fiumicino

sam. 1/31

12:40 pm-11:31 am

1 stop31h 51m

$515

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 typical price of a round-trip flight between Ontario and Rome Fiumicino Airport?

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

The cheapest month to fly to Rome Fiumicino Airport from Ontario is in October. 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 Fiumicino Airport during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $591.

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 $719. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $875.

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 $618. 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 $841.

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

You could potentially save up to 4% 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

Fastest flight time	14h 52m
Direct flights	None

The fastest flight from Ontario to Rome Fiumicino Airport takes 14h 52m

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

Search flight deals

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 52m.
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 December 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 (56% of total bookings). The next most popular airlines are Delta (18%), British Airways (13%), and KLM (13%).

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
Delta	PriceFrom $479	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
British Airways	PriceFrom $487	Free Cancellation	Rating 6.7 7,571 reviews	Search British Airways flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
KLM	PriceFrom $520	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM flights

Fiumicino

Civitavecchia

Cassino

Pienza

Ponza

Montepulciano

Tivoli

Sperlonga

Gaeta

Orvieto

Ciampino

Cortona

Terracina

Santa Marinella

Grosseto

Chianciano Terme

Sabaudia

Ascoli Piceno

Saturnia

Foligno

Why use momondo?

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.

An easier way to manage your Rome Fiumicino Airport trip

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Cheap flights from Ontario to Rome from $226

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 3/16. 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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British Airways flights from Ontario to Rome Fiumicino Airport

Our best British Airways 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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How to get the cheapest flight ticket from Ontario to Rome Fiumicino Airport

What is the typical price of a round-trip flight between Ontario and Rome Fiumicino Airport?

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 $719. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $875.

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 4% 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?

United Airlines is the most popular carrier 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

Fastest flight time

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