ONT - FCO

$375 Find Cheap Flights from Ontario to Rome

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Rome departing on 10/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Rome Fiumicino Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Rome, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Rome, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$466
Typical prices: $649-1021
KLM
Wed 11/26Wed 12/10
ONT - FCO • 1 stop
Cheapest one-way
$372
British Airways
Sun 10/19
ONT - FCO • 1 stop
Top airlines
KLM
Cheapest • from $466 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
December
Cheapest • 37% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Rome (ONT-FCO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Rome that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Rome

Wed, Nov 26 - Wed, Dec 10
KLM Logo
7:05 am - 7:55 amONT-FCO
15h 50m1 stop
KLM Logo
12:40 pm - 11:04 pmFCO-ONT
19h 24m1 stop
$466KLM
Find Deal
Mon, Nov 17 - Wed, Nov 26
Delta Logo
7:05 am - 7:55 amONT-FCO
15h 50m1 stop
Delta Logo
10:05 am - 7:42 pmFCO-ONT
18h 37m1 stop
$476Delta
Find Deal
Mon, Dec 1 - Thu, Dec 11
Delta Logo
10:25 pm - 10:30 amONT-FCO
27h 05m1 stop
Delta Logo
12:40 pm - 11:04 pmFCO-ONT
19h 24m1 stop
$482Delta
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Sun, Nov 16 - Wed, Nov 26
Delta Logo
10:25 pm - 7:55 amONT-FCO
24h 30m1 stop
Delta Logo
6:10 am - 10:55 pmFCO-ONT
25h 45m2 stops
$492Delta
Find Deal
Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
5:40 am - 8:30 amONT-FCO
17h 50m2 stops
United Airlines Logo
1:05 pm - 10:57 pmFCO-ONT
42h 52m3 stops
$495United Airlines
Find Deal
Tue, Nov 18 - Tue, Nov 25
United Airlines Logo
7:00 am - 7:45 amONT-FCO
15h 45m1 stop
United Airlines Logo
1:30 pm - 10:51 pmFCO-ONT
18h 21m2 stops
$503United Airlines
Find Deal
Mon, Mar 2 - Wed, Mar 11
Air Canada Logo
5:40 am - 11:05 amONT-FCO
20h 25m2 stops
Air Canada Logo
12:15 pm - 12:33 pmFCO-ONT
32h 18m2 stops
$518Air Canada
Find Deal
Mon, Nov 17 - Wed, Nov 26
British Airways Logo
4:47 pm - 9:55 pmONT-FCO
20h 08m2 stops
British Airways Logo
7:50 am - 9:59 pmFCO-ONT
23h 09m2 stops
$531British Airways
Find Deal
Sun, Nov 30 - Tue, Dec 9
KLM Logo
7:05 am - 7:55 amONT-FCO
15h 50m1 stop
KLM Logo
12:40 pm - 11:04 pmFCO-ONT
19h 24m1 stop
$541KLM
Find Deal
Mon, Jan 5 - Fri, Jan 16
British Airways Logo
4:47 pm - 9:55 pmONT-FCO
20h 08m2 stops
British Airways Logo
8:35 am - 10:49 pmFCO-ONT
23h 14m2 stops
$571British Airways
Find Deal
Booking Insights

KAYAK's insights & trends for Ontario to Rome flights

Get data-powered insights and trends into flights from Ontario to Rome to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ontario to Rome Fiumicino Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Rome Fiumicino Airport departing in November.

What’s the cheapest day of the week to fly from Ontario to Rome?

The average price of all round-trip flights from Ontario to Rome Fiumicino Airport clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Rome on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Ontario to Rome. For your return ticket, we recommend flying on a Thursday and avoiding Wednesdays for the best deals.

What is the cheapest month to fly from Ontario to Rome Fiumicino Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Rome Fiumicino Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Rome Fiumicino Airport is December, where tickets cost $570 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,562 and $1,166 respectively.

Good to know

Low seasonDecember
Cheapest flight$372
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Ontario to Rome

When to book flights from Ontario to Rome

Are your dates flexible? Find out the best times to travel from Ontario to Rome based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Rome flights

  • What is the cheapest flight from Ontario to Rome Fiumicino Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Rome Fiumicino Airport was $372 for a one-way ticket and $466 for a round-trip.

  • Do I need a passport to fly between Ontario and Rome?

    A passport is required to fly from Ontario to Rome.

  • Which aircraft models fly most regularly from Ontario to Rome?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Rome?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Ontario and Rome, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Rome, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Ontario to Rome are Delta and KLM. With an average price for the route of $590 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $704 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Ontario to Rome?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Rome.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Rome?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Rome from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Rome?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Rome with an airline and back to Ontario with another airline. Booking your flights between Ontario and FCO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Rome?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Rome from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Ontario to Rome

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Rome. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Rome? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7967 reviews
8.5Crew
7.9Comfort
8.2Boarding
7.9Entertainment
7.3Food
Airline reviews

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

2.0 MediocreAnonymous, Sep 2025SNA - SEA
Read more Delta reviews

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Great crew and food and beverage. Seating tight but not the airline's fault. Will definitely fly BA in future!

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

The airline was efficient and accommodating to work with though there was a delay. Appreciate the service and smooth experience!

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

The check-in of my luggage was terrible. When purchased my tickets, one luggage and one carry-on was part of the fight. My flight was switched from British to American Airline. During check-in of luggage at the airport, I was denied and had to pay extra $75. How do I get reimbursed for this extra luggage payment?

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

charging port did not work, no entertainment system. Other than that the flight was good and safe.

The delay was not communicated via text and the person who helped with check in also didn’t inform me about the delay. I ended up missing my connection and it was a waste of 5 hours. The crew didn’t mention there would be someone at the gate informing of if I would be rebooked and there was no signage. Overall a very poor experience. The British Airways app was also very buggy, and didn’t work. I will avoid flying with British Airways when possible.

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