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

United Airlines and Alaska Airlines are the most popular carriers operating from Ontario to Rome Fiumicino

What airlines fly to Rome Fiumicino Airport?

ITA Airways, United Airlines and Norse Atlantic 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 54% of people opting to fly with this airline when traveling to Rome Fiumicino Airport. Keep in mind that there are 20 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 June 2026, there are 3 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.

$345 Cheap Flights from Ontario to Rome Fiumicino Airport in 2026

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 $1,524 to $575. The lowest price recently found on this route was $718.

Discover deals from 900+ travel sites with momondo.

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.

6:20 am - 10:10 am

ONT

FCO

18h 50m

1 stop

1:10 pm - 6:29 pm

FCO

ONT

38h 19m

1 stop

$718KLM

Mon, Aug 3 - Wed, Aug 19

7:05 am - 7:35 am

ONT

FCO

15h 30m

1 stop

1:10 pm - 9:52 pm

FCO

ONT

17h 42m

1 stop

$727KLM

Tue, Aug 11 - Thu, Aug 20

7:00 am - 8:15 am

ONT

FCO

16h 15m

1 stop

1:30 pm - 10:14 pm

FCO

ONT

17h 44m

1 stop

$753Delta

Sun, Nov 8 - Tue, Nov 24

1:00 pm - 11:00 pm

ONT

FCO

25h 00m

2 stops

11:15 am - 8:20 pm

FCO

ONT

42h 05m

2 stops

$754United Airlines

Sun, Dec 6 - Thu, Dec 10

12:33 pm - 12:05 pm

ONT

FCO

14h 32m

1 stop

1:10 pm - 10:59 pm

FCO

ONT

18h 49m

1 stop

$755British Airways

Mon, Aug 17 - Tue, Aug 25

1:00 pm - 11:55 am

ONT

FCO

13h 55m

1 stop

1:55 pm - 8:20 pm

FCO

ONT

15h 25m

1 stop

$762United Airlines

Sun, Nov 8 - Tue, Nov 10

6:53 pm - 8:30 am

ONT

FCO

28h 37m

2 stops

7:05 am - 8:20 pm

FCO

ONT

22h 15m

2 stops

$765United Airlines

Tue, Dec 1 - Fri, Dec 4

7:05 am - 7:35 am

ONT

FCO

15h 30m

1 stop

1:10 pm - 9:52 pm

FCO

ONT

17h 42m

1 stop

$767KLM

Thu, Aug 6 - Thu, Aug 20

7:05 am - 7:35 am

ONT

FCO

15h 30m

1 stop

1:10 pm - 9:52 pm

FCO

ONT

17h 42m

1 stop

$768Multiple Airlines

Thu, Aug 6 - Fri, Aug 21

7:05 am - 7:35 am

ONT

FCO

15h 30m

1 stop

1:10 pm - 9:52 pm

FCO

ONT

17h 42m

1 stop

$769Multiple Airlines

Thu, Aug 6 - Fri, Aug 21

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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

British Airways

Aug 17

ONT12:33 pmOntario

14h 32m

1 stop

FCO12:05 pmRome Fiumicino

Aug 25

FCO1:10 pmRome Fiumicino

18h 49m

1 stop

ONT10:59 pmOntario

$755

British Airways

Aug 17

ONT6:00 amOntario

21h 05m

1 stop

FCO12:05 pmRome Fiumicino

Aug 26

FCO1:10 pmRome Fiumicino

18h 49m

1 stop

ONT10:59 pmOntario

$778

British Airways

Aug 11

ONT10:29 amOntario

16h 36m

1 stop

FCO12:05 pmRome Fiumicino

Aug 27

FCO1:10 pmRome Fiumicino

18h 49m

1 stop

ONT10:59 pmOntario

$781

Lufthansa flights from Ontario to Rome Fiumicino Airport

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

Lufthansa

Aug 10

ONT6:00 amOntario

23h 05m

2 stops

FCO2:05 pmRome Fiumicino

Aug 26

FCO8:00 amRome Fiumicino

19h 16m

2 stops

ONT6:16 pmOntario

$807

Lufthansa

Nov 17

ONT7:00 amOntario

15h 45m

1 stop

FCO7:45 amRome Fiumicino

Nov 27

FCO1:55 pmRome Fiumicino

15h 25m

1 stop

ONT8:20 pmOntario

$811

Lufthansa

Jun 21

ONT1:18 pmOntario

14h 02m

1 stop

FCO12:20 pmRome Fiumicino

Jun 30

FCO3:40 pmRome Fiumicino

15h 57m

1 stop

ONT10:37 pmOntario

$1,179

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

Cheapest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/3

6:20 am-10:10 am

1 stop18h 50m

Rome Fiumicino

Wed 8/19

1:10 pm-6:29 pm

1 stop38h 19m

$718

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/11

7:05 am-7:35 am

1 stop15h 30m

Rome Fiumicino

Thu 8/20

1:10 pm-9:52 pm

1 stop17h 42m

$727

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 11/8

7:00 am-8:15 am

1 stop16h 15m

Rome Fiumicino

Tue 11/24

1:30 pm-10:14 pm

1 stop17h 44m

$753

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 12/6

1:00 pm-11:00 pm

2 stops25h 00m

Rome Fiumicino

Thu 12/10

11:15 am-8:20 pm

2 stops42h 05m

$754

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/17

12:33 pm-12:05 pm

1 stop14h 32m

Rome Fiumicino

Tue 8/25

1:10 pm-10:59 pm

1 stop18h 49m

$755

Quickest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 11/8

1:00 pm-11:55 am

1 stop13h 55m

Rome Fiumicino

Tue 11/10

1:55 pm-8:20 pm

1 stop15h 25m

$762

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 12/1

6:53 pm-8:30 am

2 stops28h 37m

Rome Fiumicino

Fri 12/4

7:05 am-8:20 pm

2 stops22h 15m

$765

OntarioRome

ONT - FCO

ONTFCO

Ontario

Thu 8/6

7:05 am-7:35 am

1 stop15h 30m

Rome Fiumicino

Thu 8/20

1:10 pm-9:52 pm

1 stop17h 42m

$767

OntarioRome

ONT - FCO

ONTFCO

Ontario

Thu 8/6

7:05 am-7:35 am

1 stop15h 30m

Rome Fiumicino

Fri 8/21

1:10 pm-9:52 pm

1 stop17h 42m

$768

OntarioRome

ONT - FCO

ONTFCO

Ontario

Thu 8/6

7:05 am-7:35 am

1 stop15h 30m

Rome Fiumicino

Fri 8/21

1:10 pm-9:52 pm

1 stop17h 42m

$769

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

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 November. Flight prices, which tend to average around $0, 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 November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $0.

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

Our data shows that Monday is the least expensive day to fly to Rome Fiumicino Airport. Tickets to fly out on this day can be as low as $716. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $816.

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 $538. 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 $822.

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

You could potentially save up to 46% 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 02m
Direct flights	None

The fastest flight from Ontario to Rome Fiumicino Airport takes 14h 02m

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

Frequently asked questions about flying from Ontario to Rome Fiumicino Airport

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 02m.
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 June 2026, there are 3 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 (66% of total bookings). The next most popular airlines are Delta (21%) 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 7.8 8,406 reviews	Search Delta flights
British Airways	PriceFrom $487	Free Cancellation	Rating 6.7 8,054 reviews	Search British Airways flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.4 9,844 reviews	Search United Airlines flights

Fiumicino

Civitavecchia

Cassino

Gaeta

Orvieto

Montepulciano

Ponza

Chianciano Terme

Ladispoli

Pienza

Sperlonga

Terracina

Saturnia

Ciampino

Santa Marinella

Anzio

Orbetello

Grosseto

Ascoli Piceno

Vatican

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.

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Cheap flights from Ontario to Rome from $346

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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British Airways flights from Ontario to Rome Fiumicino Airport

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

Lufthansa flights from Ontario to Rome Fiumicino Airport

Our best Lufthansa 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

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?

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?

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

What airlines fly to Rome Fiumicino Airport?

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

Frequently asked questions about flying 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

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Why use momondo?

An easier way to manage your Rome Fiumicino Airport trip

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