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.

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 47% 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.

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.

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

British Airways, Iberia, and Delta are the most popular carriers 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 October 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.

$305 Cheap Flights from Ontario to Rome Fiumicino Airport 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

Enter your travel dates to find the best prices.

7:05 am - 7:55 amONT-FCO

15h 50m1 stop

10:05 am - 7:42 pmFCO-ONT

18h 37m1 stop

$475Delta

Find Deal

Mon, Nov 10 - Wed, Nov 19

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 25 - Thu, Dec 4

1:29 pm - 8:55 amONT-FCO

34h 26m2 stops

10:55 am - 10:49 pmFCO-ONT

44h 54m3 stops

$490United Airlines

Find Deal

Tue, Nov 25 - Thu, Dec 4

5:05 am - 7:45 amONT-FCO

41h 40m2 stops

1:10 pm - 12:32 pmFCO-ONT

56h 22m2 stops

$494United Airlines

Find Deal

Mon, Dec 1 - Tue, Dec 9

1:24 pm - 11:05 amONT-FCO

36h 41m2 stops

12:50 pm - 8:50 pmFCO-ONT

41h 00m2 stops

$496United Airlines

Find Deal

Tue, Feb 10 - Thu, Feb 19

5:05 pm - 6:45 pmONT-FCO

16h 40m2 stops

9:45 am - 6:15 pmFCO-ONT

17h 30m1 stop

$501KLM

Find Deal

Wed, Apr 8 - Wed, Apr 15

7:30 am - 10:45 pmONT-FCO

30h 15m2 stops

12:45 pm - 4:13 pmFCO-ONT

36h 28m2 stops

$510Delta

Find Deal

Wed, Jan 7 - Tue, Jan 13

12:16 pm - 10:30 amONT-FCO

37h 14m1 stop

12:40 pm - 11:04 pmFCO-ONT

19h 24m1 stop

$518Air France

Find Deal

Sun, Nov 9 - Sun, Nov 23

4:49 pm - 9:55 pmONT-FCO

20h 06m2 stops

7:25 am - 9:40 pmFCO-ONT

23h 15m2 stops

$545British Airways

Find Deal

Mon, Feb 9 - Tue, Feb 24

10:47 am - 7:20 pmONT-FCO

23h 33m2 stops

5:50 pm - 10:00 pmFCO-ONT

37h 10m2 stops

$559British Airways

Find Deal

Wed, Nov 26 - Wed, Dec 3

KLM flights from Ontario to Rome Fiumicino Airport

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

KLM

Nov 25

ONT6:00 amOntario

16h 55m

2 stops

FCO7:55 amRome Fiumicino

Dec 4

FCO10:05 amRome Fiumicino

21h 59m

2 stops

ONT11:04 pmOntario

$480

Find similar

KLM

Apr 8

ONT5:05 pmOntario

16h 40m

2 stops

FCO6:45 pmRome Fiumicino

Apr 15

FCO9:45 amRome Fiumicino

17h 30m

1 stop

ONT6:15 pmOntario

$501

Find similar

KLM

Dec 7

ONT7:05 amOntario

18h 25m

1 stop

FCO10:30 amRome Fiumicino

Dec 14

FCO10:05 amRome Fiumicino

21h 59m

1 stop

ONT11:04 pmOntario

$515

Find similar

Delta flights from Ontario to Rome Fiumicino Airport

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

Delta

Nov 10

ONT7:05 amOntario

15h 50m

1 stop

FCO7:55 amRome Fiumicino

Nov 19

FCO10:05 amRome Fiumicino

18h 37m

1 stop

ONT7:42 pmOntario

$475

Find similar

Delta

Jan 7

ONT7:30 amOntario

30h 15m

2 stops

FCO10:45 pmRome Fiumicino

Jan 13

FCO12:45 pmRome Fiumicino

36h 28m

2 stops

ONT4:13 pmOntario

$510

Find similar

Delta

Dec 7

ONT7:05 amOntario

15h 50m

1 stop

FCO7:55 amRome Fiumicino

Dec 14

FCO10:05 amRome Fiumicino

22h 53m

2 stops

ONT11:58 pmOntario

$520

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

Mon 11/10

7:05 am-7:55 am

1 stop15h 50m

Rome Fiumicino

Wed 11/19

10:05 am-7:42 pm

1 stop18h 37m

$475

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/25

6:00 am-7:55 am

2 stops16h 55m

Rome Fiumicino

Thu 12/4

10:05 am-11:04 pm

2 stops21h 59m

$480

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/25

1:29 pm-8:55 am

2 stops34h 26m

Rome Fiumicino

Thu 12/4

10:55 am-10:49 pm

3 stops44h 54m

$490

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 12/1

5:05 am-7:45 am

2 stops41h 40m

Rome Fiumicino

Tue 12/9

1:10 pm-12:32 pm

2 stops56h 22m

$494

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 2/10

1:24 pm-11:05 am

2 stops36h 41m

Rome Fiumicino

Thu 2/19

12:50 pm-8:50 pm

2 stops41h 00m

$496

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 4/8

5:05 pm-6:45 pm

2 stops16h 40m

Rome Fiumicino

Wed 4/15

9:45 am-6:15 pm

1 stop17h 30m

$501

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 1/7

7:30 am-10:45 pm

2 stops30h 15m

Rome Fiumicino

Tue 1/13

12:45 pm-4:13 pm

2 stops36h 28m

$510

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 11/9

12:16 pm-10:30 am

1 stop37h 14m

Rome Fiumicino

Sun 11/23

12:40 pm-11:04 pm

1 stop19h 24m

$518

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 2/9

4:49 pm-9:55 pm

2 stops20h 06m

Rome Fiumicino

Tue 2/24

7:25 am-9:40 pm

2 stops23h 15m

$545

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/26

10:47 am-7:20 pm

2 stops23h 33m

Rome Fiumicino

Wed 12/3

5:50 pm-10:00 pm

2 stops37h 10m

$559

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 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 $721. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $874.

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 $846.

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

You could potentially save up to 17% 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.

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 20m.
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 October 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 (57% of total bookings). The next most popular airlines are Delta (17%), KLM (13%), and British Airways (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 7,994 reviews	Search Delta flights
British Airways	PriceFrom $487	Free Cancellation	Rating 6.7 7,476 reviews	Search British Airways flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.4 8,997 reviews	Search United Airlines flights
KLM	PriceFrom $520	Free Cancellation	Rating 7.7 1,406 reviews	Search KLM flights

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Ponza

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Tivoli

Montepulciano

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Cortona

Terracina

Ascoli Piceno

Ciampino

Santa Marinella

Grosseto

Sabaudia

Saturnia

Chianciano Terme

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 $305

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 11/10. 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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KLM flights from Ontario to Rome Fiumicino Airport

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

Delta flights from Ontario to Rome Fiumicino Airport

Our best Delta 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 $721. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $874.

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 17% 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?

British Airways, Iberia, 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