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Cheap flights from Ontario to Rome from $299

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 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Rome

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
7:00 am - 10:45 am
ONT
-
FCO
18h 45m
1 stop
Iberia Logo
1:00 pm - 10:57 pm
FCO
-
ONT
18h 57m
1 stop
$542Iberia
Sat, Nov 7 - Tue, Nov 17
Multiple Airlines Logo
11:59 pm - 10:45 am
ONT
-
FCO
25h 46m
1 stop
Multiple Airlines Logo
1:00 pm - 9:32 pm
FCO
-
ONT
17h 32m
1 stop
$659Multiple Airlines
Sun, Nov 8 - Sun, Nov 15
Alaska Airlines Logo
12:08 pm - 1:15 pm
ONT
-
FCO
16h 07m
1 stop
Alaska Airlines Logo
3:15 pm - 2:09 pm
FCO
-
ONT
31h 54m
1 stop
$737Alaska Airlines
Sun, Aug 9 - Tue, Aug 25
Alaska Airlines Logo
12:04 pm - 1:15 pm
ONT
-
FCO
16h 11m
1 stop
Alaska Airlines Logo
3:15 pm - 7:03 pm
FCO
-
ONT
36h 48m
1 stop
$748Alaska Airlines
Tue, Aug 18 - Tue, Sep 1
United Airlines Logo
6:53 pm - 8:55 am
ONT
-
FCO
29h 02m
3 stops
United Airlines Logo
11:15 am - 8:20 pm
FCO
-
ONT
42h 05m
2 stops
$754United Airlines
Tue, Jan 12 - Tue, Jan 26
Delta Logo
7:00 am - 8:15 am
ONT
-
FCO
16h 15m
1 stop
Delta Logo
6:10 am - 4:12 pm
FCO
-
ONT
19h 02m
2 stops
$761Delta
Tue, Jan 12 - Tue, Jan 26
United Airlines Logo
1:29 pm - 11:55 am
ONT
-
FCO
14h 26m
1 stop
United Airlines Logo
1:55 pm - 8:51 pm
FCO
-
ONT
15h 56m
1 stop
$762United Airlines
Wed, Oct 28 - Wed, Nov 11
Delta Logo
7:00 am - 11:20 am
ONT
-
FCO
19h 20m
1 stop
Delta Logo
1:30 pm - 10:14 pm
FCO
-
ONT
17h 44m
1 stop
$762Delta
Tue, Jan 12 - Tue, Jan 26
United Airlines Logo
5:00 am - 8:55 am
ONT
-
FCO
18h 55m
2 stops
United Airlines Logo
7:05 am - 5:47 pm
FCO
-
ONT
19h 42m
2 stops
$763United Airlines
Wed, Dec 30 - Wed, Jan 13
Delta Logo
11:10 pm - 8:15 am
ONT
-
FCO
24h 05m
1 stop
Delta Logo
6:10 am - 10:08 pm
FCO
-
ONT
24h 58m
2 stops
$766Delta
Sun, Nov 22 - Fri, Nov 27

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Alaska Airlines flights from Ontario to Rome Fiumicino Airport

Our best Alaska Airlines deals on Ontario to Rome Fiumicino Airport flight tickets
Alaska Airlines
Aug 9
ONT12:08 pmOntario
16h 07m
1 stop
FCO1:15 pmRome Fiumicino
Aug 25
FCO3:15 pmRome Fiumicino
31h 54m
1 stop
ONT2:09 pmOntario
$737
Alaska Airlines
Aug 18
ONT12:04 pmOntario
16h 11m
1 stop
FCO1:15 pmRome Fiumicino
Sep 1
FCO3:15 pmRome Fiumicino
36h 48m
1 stop
ONT7:03 pmOntario
$748
Alaska Airlines
Aug 9
ONT12:08 pmOntario
16h 07m
1 stop
FCO1:15 pmRome Fiumicino
Aug 25
FCO3:15 pmRome Fiumicino
36h 48m
1 stop
ONT7:03 pmOntario
$750

United Airlines flights from Ontario to Rome Fiumicino Airport

Our best United Airlines deals on Ontario to Rome Fiumicino Airport flight tickets
United Airlines
Nov 24
ONT7:00 amOntario
15h 45m
1 stop
FCO7:45 amRome Fiumicino
Dec 8
FCO1:30 pmRome Fiumicino
18h 36m
2 stops
ONT11:06 pmOntario
$764
United Airlines
Aug 3
ONT5:00 amOntario
20h 55m
2 stops
FCO10:55 amRome Fiumicino
Aug 19
FCO6:50 amRome Fiumicino
23h 03m
2 stops
ONT8:53 pmOntario
$769
United Airlines
Aug 10
ONT1:18 pmOntario
14h 02m
1 stop
FCO12:20 pmRome Fiumicino
Aug 26
FCO2:20 pmRome Fiumicino
15h 33m
1 stop
ONT8:53 pmOntario
$770

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Rome Fiumicino Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 30, 2026.
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

Sat 11/7

7:00 am-10:45 am

1 stop18h 45m

Rome Fiumicino

Tue 11/17

1:00 pm-10:57 pm

1 stop18h 57m

$542

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 11/8

11:59 pm-10:45 am

1 stop25h 46m

Rome Fiumicino

Sun 11/15

1:00 pm-9:32 pm

1 stop17h 32m

$659

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 8/9

12:08 pm-1:15 pm

1 stop16h 07m

Rome Fiumicino

Tue 8/25

3:15 pm-2:09 pm

1 stop31h 54m

$737

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/18

12:04 pm-1:15 pm

1 stop16h 11m

Rome Fiumicino

Tue 9/1

3:15 pm-7:03 pm

1 stop36h 48m

$748

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 1/12

6:53 pm-8:55 am

3 stops29h 02m

Rome Fiumicino

Tue 1/26

11:15 am-8:20 pm

2 stops42h 05m

$754

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 1/12

7:00 am-8:15 am

1 stop16h 15m

Rome Fiumicino

Tue 1/26

6:10 am-4:12 pm

2 stops19h 02m

$761
Quickest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 10/28

1:29 pm-11:55 am

1 stop14h 26m

Rome Fiumicino

Wed 11/11

1:55 pm-8:51 pm

1 stop15h 56m

$762

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 1/12

7:00 am-11:20 am

1 stop19h 20m

Rome Fiumicino

Tue 1/26

1:30 pm-10:14 pm

1 stop17h 44m

$762

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 12/30

5:00 am-8:55 am

2 stops18h 55m

Rome Fiumicino

Wed 1/13

7:05 am-5:47 pm

2 stops19h 42m

$763

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 11/22

11:10 pm-8:15 am

1 stop24h 05m

Rome Fiumicino

Fri 11/27

6:10 am-10:08 pm

2 stops24h 58m

$766

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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 $727 to $977.
The lowest price recently found on this route was $542.

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 $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 February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $508.

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

Our data shows that Wednesday is the least expensive day to fly to Rome Fiumicino Airport. Tickets to fly out on this day can be as low as $816. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $880.

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 $559. 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 $868.

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

You could potentially save up to 23% 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?

  • 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?

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
DeltaPriceFrom $480Free CancellationRating
7.8
8,487 reviews
Search Delta flights
United AirlinesPriceFrom $508Free CancellationRating
7.4
10,046 reviews
Search United Airlines flights

Traveling to a place near Rome?

Book flights to Rome if you plan to visit one of these locations
Fiumicino
Civitavecchia
Gaeta
Orvieto
Montepulciano
Ladispoli
Pienza
Tivoli
Chianciano Terme
Ponza
Sperlonga
Orbetello
Ciampino
Terracina
Cassino
Saturnia
Ascoli Piceno
Porto Ercole
Santa Marinella
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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