Cheap flights from Ontario to Rome from $333
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 1/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Wed 11/11
1:29 pm-11:55 am
1 stop13h 26m
Rome Fiumicino
Wed 11/25
1:15 pm-3:59 pm
2 stops35h 44m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Wed 11/11
5:00 am-11:55 am
1 stop21h 55m
Rome Fiumicino
Wed 11/25
1:15 pm-3:59 pm
2 stops35h 44m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Wed 11/11
5:00 am-8:55 am
2 stops18h 55m
Rome Fiumicino
Wed 11/25
1:15 pm-3:59 pm
2 stops35h 44m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Wed 11/11
5:00 am-8:55 am
2 stops18h 55m
Rome Fiumicino
Wed 11/25
1:15 pm-3:59 pm
2 stops35h 44m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Sat 2/13
6:35 pm-8:55 am
2 stops29h 20m
Rome Fiumicino
Fri 2/19
7:05 am-9:39 pm
2 stops23h 34m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Sun 10/25
7:07 am-8:15 am
1 stop17h 08m
Rome Fiumicino
Tue 11/10
10:25 am-8:54 pm
1 stop19h 29m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Sun 10/25
9:25 am-6:00 pm
2 stops24h 35m
Rome Fiumicino
Tue 11/10
7:05 am-6:01 pm
2 stops19h 56m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Sun 10/25
7:07 am-8:15 am
1 stop17h 08m
Rome Fiumicino
Tue 11/10
10:25 am-8:54 pm
1 stop19h 29m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Mon 10/26
7:07 am-8:15 am
1 stop17h 08m
Rome Fiumicino
Tue 11/10
10:25 am-8:54 pm
1 stop19h 29m
OntarioRome
ONT Ontario - FCO Rome Fiumicino
ONTFCO
Ontario
Sun 10/25
1:32 pm-11:55 am
1 stop14h 23m
Rome Fiumicino
Tue 11/10
1:55 pm-8:51 pm
1 stop15h 56m
See travel insights to Rome from
How to get the cheapest flight ticket from Ontario to Rome
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?
The cheapest month to fly to Rome 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 during the month of February, then flying in January 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?
The cheapest day to depart on your flight to Rome is on a Wednesday when prices can be found for as low as $892. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Rome on Thursday is $977.
What is the cheapest time of day to depart on your flight to Rome?
In the morning is the cheapest time of day to fly from Ontario to Rome when you can find flight prices for as low as $692. Flying to Rome in the morning is an ideal time because this is during off-peak travel hours. Flights to Rome are more costly in the afternoon, with an average ticket price of $946. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.
Can stopping save me money on Ontario to Rome flights?
You could potentially save up to 16% on your flight if you consider stops on a Ontario to Rome flight.
What is the cheapest airline that flies from Ontario to Rome?
United Airlines, KLM, and Delta are the most popular carriers operating from Ontario to Rome
What airlines fly to Rome?
ITA Airways, United Airlines and Condor are the top three most popular airlines that fly to Rome from Ontario according to our data. ITA Airways is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Rome. Keep in mind that there are 21 different airlines that fly to Rome on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Ontario and Rome?
San Francisco (SFO) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Ontario to Rome?
Flights via San Francisco (SFO) offer the lowest average round-trip price of $687.
Which layover airport has the shortest travel time from Ontario to Rome?
Flights connecting via Denver (DEN) have the shortest average one-way travel time: 14h 02m.
Which layover airport has the shortest connection time from Ontario to Rome?
Denver (DEN) has the shortest average layover time for this route: 1h 21m.
When to book flights from Ontario to Rome
Cheap Ontario to Rome (ONT to ROM) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to Rome
Frequently asked questions about flying from Ontario to Rome
How far is Ontario to Rome by plane?
There are 6306.5 mi between Ontario and Rome. A reasonable flight in good conditions will take 13h 26m.
When did momondo last update prices for flights from Ontario Airport to Rome?
Prices for flights from Ontario Airport to Rome refresh daily.
How many operators does momondo search for flights from Ontario Airport to Rome?
The number of operators available for flights from Ontario Airport to Rome is 2 as of October 2026.
How old do you have to be to fly from Ontario Airport to Rome?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Rome.
What documentation or ID do you need to fly to Rome?
The necessary travel and health documents for your Rome trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Rome?
Based on momondo bookings for flights between Ontario and Rome, the leading airline is United Airlines, making up 100% of the total bookings.
Best airlines flying from Ontario to Rome
Compare and see reviews for airlines that fly from Ontario to Rome with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $507 | Free Cancellation | Rating 7.4 10,324 reviews | |||
| PriceFrom $723 | Free Cancellation | Rating 7.8 8,646 reviews |
Traveling to a place near Rome?
Book flights to Rome if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ontario to Rome?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Rome. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Ontario to Rome with flexible booking policies on momondo?
Yes. All flights to Rome from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Ontario to Rome?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Rome from Ontario.
I’m not ready to book a flight from Ontario to Rome right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Rome, momondo offers a useful price alert feature which will track prices for flights to Rome from Ontario and alert you when they change.