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

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

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 51% 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 March 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.

$273 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 $743 to $1,091. The lowest price recently found on this route was $587.

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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.

7:00 am - 7:55 am

ONT

FCO

15h 55m

1 stop

11:30 am - 10:31 pm

FCO

ONT

44h 01m

2 stops

$587United Airlines

mar., abr. 7 - jue., abr. 23

10:25 pm - 7:35 am

ONT

FCO

24h 10m

1 stop

9:45 am - 6:33 pm

FCO

ONT

17h 48m

1 stop

$607KLM

sáb., abr. 11 - jue., abr. 23

10:59 am - 3:10 pm

ONT

FCO

19h 11m

2 stops

11:05 am - 10:36 pm

FCO

ONT

20h 31m

2 stops

$608American Airlines

mar., abr. 7 - jue., abr. 23

10:25 pm - 7:35 am

ONT

FCO

24h 10m

1 stop

9:00 am - 11:44 pm

FCO

ONT

23h 44m

2 stops

$612Delta

sáb., abr. 11 - jue., abr. 23

11:58 pm - 12:05 pm

ONT

FCO

27h 07m

1 stop

2:15 pm - 9:07 pm

FCO

ONT

39h 52m

1 stop

$613British Airways

dom., abr. 5 - mar., abr. 21

4:20 pm - 1:20 pm

ONT

FCO

36h 00m

1 stop

1:20 pm - 10:58 pm

FCO

ONT

18h 38m

2 stops

$626United Airlines

sáb., ago. 8 - jue., ago. 20

1:18 pm - 12:20 pm

ONT

FCO

14h 02m

1 stop

3:40 pm - 10:58 pm

FCO

ONT

16h 18m

1 stop

$627United Airlines

mié., ago. 12 - jue., ago. 20

1:18 pm - 12:20 pm

ONT

FCO

14h 02m

1 stop

3:40 pm - 10:58 pm

FCO

ONT

16h 18m

1 stop

$628United Airlines

mié., ago. 12 - vie., ago. 21

10:59 pm - 11:25 am

ONT

FCO

27h 26m

2 stops

12:45 pm - 4:14 pm

FCO

ONT

36h 29m

2 stops

$631Delta

sáb., ago. 8 - mié., ago. 19

6:49 pm - 1:40 pm

ONT

FCO

33h 51m

1 stop

11:30 am - 10:31 pm

FCO

ONT

44h 01m

2 stops

$637United Airlines

sáb., abr. 11 - jue., abr. 23

United Airlines flights from Ontario to Rome Fiumicino Airport

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

United Airlines

Apr 7

ONT7:00 amOntario

15h 55m

1 stop

FCO7:55 amRome Fiumicino

Apr 23

FCO11:30 amRome Fiumicino

44h 01m

2 stops

ONT10:31 pmOntario

$587

United Airlines

Apr 22

ONT5:10 amOntario

22h 10m

1 stop

FCO12:20 pmRome Fiumicino

Apr 28

FCO12:25 pmRome Fiumicino

41h 11m

2 stops

ONT8:36 pmOntario

$592

United Airlines

Aug 8

ONT4:20 pmOntario

36h 00m

1 stop

FCO1:20 pmRome Fiumicino

Aug 20

FCO1:20 pmRome Fiumicino

18h 38m

2 stops

ONT10:58 pmOntario

$626

American Airlines flights from Ontario to Rome Fiumicino Airport

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

American Airlines

Apr 7

ONT10:59 amOntario

19h 11m

2 stops

FCO3:10 pmRome Fiumicino

Apr 23

FCO11:05 amRome Fiumicino

20h 31m

2 stops

ONT10:36 pmOntario

$608

American Airlines

Mar 17

ONT11:58 pmOntario

26h 47m

1 stop

FCO10:45 amRome Fiumicino

Apr 3

FCO10:00 amRome Fiumicino

20h 24m

2 stops

ONT9:24 pmOntario

$617

American Airlines

Apr 22

ONT12:19 pmOntario

19h 36m

2 stops

FCO4:55 pmRome Fiumicino

Apr 28

FCO10:00 amRome Fiumicino

21h 36m

2 stops

ONT10:36 pmOntario

$638

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

mar. 4/7

7:00 am-7:55 am

1 stop15h 55m

Rome Fiumicino

jue. 4/23

11:30 am-10:31 pm

2 stops44h 01m

$587

OntarioRome

ONT - FCO

ONTFCO

Ontario

sáb. 4/11

10:25 pm-7:35 am

1 stop24h 10m

Rome Fiumicino

jue. 4/23

9:45 am-6:33 pm

1 stop17h 48m

$607

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 4/7

10:59 am-3:10 pm

2 stops19h 11m

Rome Fiumicino

jue. 4/23

11:05 am-10:36 pm

2 stops20h 31m

$608

OntarioRome

ONT - FCO

ONTFCO

Ontario

sáb. 4/11

10:25 pm-7:35 am

1 stop24h 10m

Rome Fiumicino

jue. 4/23

9:00 am-11:44 pm

2 stops23h 44m

$612

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 4/5

11:58 pm-12:05 pm

1 stop27h 07m

Rome Fiumicino

mar. 4/21

2:15 pm-9:07 pm

1 stop39h 52m

$613

OntarioRome

ONT - FCO

ONTFCO

Ontario

sáb. 8/8

4:20 pm-1:20 pm

1 stop36h 00m

Rome Fiumicino

jue. 8/20

1:20 pm-10:58 pm

2 stops18h 38m

$626

Quickest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

mié. 8/12

1:18 pm-12:20 pm

1 stop14h 02m

Rome Fiumicino

jue. 8/20

3:40 pm-10:58 pm

1 stop16h 18m

$627

OntarioRome

ONT - FCO

ONTFCO

Ontario

mié. 8/12

1:18 pm-12:20 pm

1 stop14h 02m

Rome Fiumicino

vie. 8/21

3:40 pm-10:58 pm

1 stop16h 18m

$628

OntarioRome

ONT - FCO

ONTFCO

Ontario

sáb. 8/8

10:59 pm-11:25 am

2 stops27h 26m

Rome Fiumicino

mié. 8/19

12:45 pm-4:14 pm

2 stops36h 29m

$631

OntarioRome

ONT - FCO

ONTFCO

Ontario

sáb. 4/11

6:49 pm-1:40 pm

1 stop33h 51m

Rome Fiumicino

jue. 4/23

11:30 am-10:31 pm

2 stops44h 01m

$637

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 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 $714. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $828.

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 $593. 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 $800.

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

You could potentially save up to 35% 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

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 March 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 (68% of total bookings). The next most popular airlines are British Airways (17%) and Delta (16%).

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 $475	Free Cancellation	Rating 7.9 8,291 reviews	Search Delta flights
British Airways	PriceFrom $487	Free Cancellation	Rating 6.7 7,786 reviews	Search British Airways flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.4 9,422 reviews	Search United Airlines flights

Fiumicino

Civitavecchia

Cassino

Ponza

Gaeta

Montepulciano

Pienza

Tivoli

Sperlonga

Orvieto

Chianciano Terme

Terracina

Santa Marinella

Ascoli Piceno

Ciampino

Sabaudia

Saturnia

Grosseto

Orbetello

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 $273

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 9/2. 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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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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Our best American 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 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

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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