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Cheap flights from Ontario to Rome from $247

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 4/25. 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
0 bags

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Find the cheapest flights from Ontario to Rome

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:40 pm - 11:00 pm
ONT
-
FCO
25h 20m
2 stops
United Airlines Logo
11:30 am - 10:26 pm
FCO
-
ONT
43h 56m
2 stops
$496United Airlines
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
1:27 pm - 1:20 pm
ONT
-
FCO
14h 53m
1 stop
United Airlines Logo
2:20 pm - 8:36 pm
FCO
-
ONT
15h 16m
1 stop
$508United Airlines
Wed, Apr 15 - Thu, Apr 23
American Airlines Logo
2:39 pm - 7:20 pm
ONT
-
FCO
19h 41m
2 stops
American Airlines Logo
1:10 pm - 10:06 am
FCO
-
ONT
29h 56m
2 stops
$509American Airlines
Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
6:10 am - 7:45 am
ONT
-
FCO
16h 35m
2 stops
United Airlines Logo
7:05 am - 7:54 pm
FCO
-
ONT
21h 49m
2 stops
$511United Airlines
Tue, Feb 24 - Mon, Mar 2
United Airlines Logo
6:37 pm - 11:00 pm
ONT
-
FCO
20h 23m
2 stops
United Airlines Logo
2:20 pm - 8:36 pm
FCO
-
ONT
15h 16m
1 stop
$516United Airlines
Tue, Mar 24 - Tue, Mar 31
Delta Logo
7:30 am - 5:25 pm
ONT
-
FCO
24h 55m
2 stops
Delta Logo
12:40 pm - 12:02 pm
FCO
-
ONT
32h 22m
1 stop
$517Delta
Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
6:49 pm - 1:20 pm
ONT
-
FCO
33h 31m
1 stop
United Airlines Logo
11:30 am - 10:30 pm
FCO
-
ONT
44h 00m
2 stops
$518United Airlines
Sat, Apr 18 - Thu, Apr 30
Delta Logo
10:30 pm - 10:30 am
ONT
-
FCO
27h 00m
1 stop
Delta Logo
12:40 pm - 12:02 pm
FCO
-
ONT
32h 22m
1 stop
$519Delta
Sat, Feb 7 - Wed, Feb 18
United Airlines Logo
1:34 pm - 9:15 am
ONT
-
FCO
34h 41m
2 stops
United Airlines Logo
11:30 am - 10:30 pm
FCO
-
ONT
44h 00m
2 stops
$521United Airlines
Sat, Apr 18 - Thu, Apr 30
United Airlines Logo
6:49 pm - 8:15 am
ONT
-
FCO
28h 26m
2 stops
United Airlines Logo
11:30 am - 10:26 pm
FCO
-
ONT
43h 56m
2 stops
$522United Airlines
Sat, Apr 11 - Thu, Apr 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
Mar 24
ONT1:40 pmOntario
25h 20m
2 stops
FCO11:00 pmRome Fiumicino
Mar 31
FCO11:30 amRome Fiumicino
43h 56m
2 stops
ONT10:26 pmOntario
$496
United Airlines
Apr 15
ONT1:27 pmOntario
14h 53m
1 stop
FCO1:20 pmRome Fiumicino
Apr 22
FCO2:20 pmRome Fiumicino
15h 16m
1 stop
ONT8:36 pmOntario
$508
United Airlines
Feb 24
ONT6:10 amOntario
16h 35m
2 stops
FCO7:45 amRome Fiumicino
Mar 5
FCO1:30 pmRome Fiumicino
18h 27m
2 stops
ONT10:57 pmOntario
$511

Delta flights from Ontario to Rome Fiumicino Airport

Our best Delta deals on Ontario to Rome Fiumicino Airport flight tickets
Delta
Feb 25
ONT6:00 amOntario
26h 25m
2 stops
FCO5:25 pmRome Fiumicino
Mar 3
FCO12:40 pmRome Fiumicino
32h 22m
1 stop
ONT12:02 pmOntario
$517
Delta
Jan 31
ONT10:30 pmOntario
27h 00m
1 stop
FCO10:30 amRome Fiumicino
Feb 10
FCO12:00 pmRome Fiumicino
32h 31m
2 stops
ONT11:31 amOntario
$518
Delta
Feb 7
ONT10:30 pmOntario
27h 00m
1 stop
FCO10:30 amRome Fiumicino
Feb 18
FCO12:40 pmRome Fiumicino
32h 22m
1 stop
ONT12:02 pmOntario
$519

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 January 27, 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

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 3/24

1:40 pm-11:00 pm

2 stops25h 20m

Rome Fiumicino

Tue 3/31

11:30 am-10:26 pm

2 stops43h 56m

$496

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 4/15

1:27 pm-1:20 pm

1 stop14h 53m

Rome Fiumicino

Thu 4/23

2:20 pm-8:36 pm

1 stop15h 16m

$508

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

2:39 pm-7:20 pm

2 stops19h 41m

Rome Fiumicino

Tue 3/3

1:10 pm-10:06 am

2 stops29h 56m

$509

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 2/24

6:10 am-7:45 am

2 stops16h 35m

Rome Fiumicino

Mon 3/2

7:05 am-7:54 pm

2 stops21h 49m

$511

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 3/24

6:37 pm-11:00 pm

2 stops20h 23m

Rome Fiumicino

Tue 3/31

2:20 pm-8:36 pm

1 stop15h 16m

$516

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

7:30 am-5:25 pm

2 stops24h 55m

Rome Fiumicino

Tue 3/3

12:40 pm-12:02 pm

1 stop32h 22m

$517

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 4/18

6:49 pm-1:20 pm

1 stop33h 31m

Rome Fiumicino

Thu 4/30

11:30 am-10:30 pm

2 stops44h 00m

$518

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 2/7

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Wed 2/18

12:40 pm-12:02 pm

1 stop32h 22m

$519

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 4/18

1:34 pm-9:15 am

2 stops34h 41m

Rome Fiumicino

Thu 4/30

11:30 am-10:30 pm

2 stops44h 00m

$521

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 4/11

6:49 pm-8:15 am

2 stops28h 26m

Rome Fiumicino

Thu 4/23

11:30 am-10:26 pm

2 stops43h 56m

$522

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Rome from

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?

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 $733. The most expensive day to fly to Rome Fiumicino Airport is Sunday, with ticket prices averaging around $846.

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 $607. 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 $833.

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

You could potentially save up to 58% 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 19m

Direct flights

None
The fastest flight from Ontario to Rome Fiumicino Airport takes 14h 19m
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 19m.

  • 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 $475Free CancellationRating
7.9
8,119 reviews
Search Delta flights
British AirwaysPriceFrom $487Free CancellationRating
6.7
7,702 reviews
Search British Airways flights
United AirlinesPriceFrom $508Free CancellationRating
7.4
9,205 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
Cassino
Pienza
Montepulciano
Ponza
Tivoli
Sperlonga
Gaeta
Orvieto
Chianciano Terme
Cortona
Terracina
Ciampino
Grosseto
Sabaudia
Santa Marinella
Ascoli Piceno
Saturnia
Orbetello

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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