HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Rome

$301+ Cheap flights from Ontario (ONT) to Rome (ROM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ROM
jul. 5 — jul. 121
sáb. 7/5
sáb. 7/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Rome with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Rome

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Rome (ROM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 30, 2025.

Round-trip from

$475
(KLM)

One-way from

$301
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$1,186
From Ontario to Rome (ROM)
Search Deals
One-way flight from Ontario to Rome (ROM)
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($240 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Ontario to Rome

Cheapest flights from Ontario to Rome
Explore the most affordable flight options available from Ontario to Rome. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 30, 2025.

This KLM deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1110:59 pmONT - FCO
1 stop23h 56mKLM
mié. 11/1912:45 pmFCO - ONT
1 stop18h 56mKLM
Deal found 6/30$475
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1110:59 pmONT - FCO
1 stop23h 56mDelta
mié. 11/1910:15 amFCO - ONT
2 stops33h 35mDelta
Deal found 6/30$480
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/196:00 amONT - FCO
2 stops17h 55mUnited Airlines
jue. 11/2711:15 amFCO - ONT
2 stops34h 18mUnited Airlines
Deal found 6/28$490
This Air Canada deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/15:40 amONT - FCO
2 stops20h 25mAir Canada
mar. 12/912:45 pmFCO - ONT
2 stops40h 58mAir Canada
Deal found 6/29$497
This Iberia deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/96:38 amONT - FCO
2 stops27h 52mIberia
jue. 11/2011:00 amFCO - ONT
1 stop20h 00mIberia
Deal found 6/29$520
This Ovago deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/222:54 pmONT - FCO
2 stops18h 41mBritish Airways
mié. 10/810:00 amFCO - ONT
1 stop18h 03mBritish Airways
Deal found 6/29$543
This Finnair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/311:59 pmONT - FCO
2 stops24h 01mMultiple Airlines
lun. 11/1011:00 amFCO - ONT
2 stops30h 44mMultiple Airlines
Deal found 6/30$566

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Rome 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, Cheapflights users made 2,558,603 searches. Data last updated junio 30, 2025.
Use the filters below to find and compare flights from Ontario to Rome that are best for you.

Fly from

Ontario

Fly to

Rome

Route

Depart

Return

Price

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 11/11

10:59 pm-7:55 am

1 stop23h 56m

Rome Fiumicino

mié. 11/19

12:45 pm-10:41 pm

1 stop18h 56m

$475

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 11/11

10:59 pm-7:05 am

2 stops23h 06m

Rome Fiumicino

mié. 11/19

10:15 am-10:50 am

2 stops33h 35m

$480

OntarioRome

ONT - FCO

ONTFCO

Ontario

mié. 11/19

6:00 am-8:55 am

2 stops17h 55m

Rome Fiumicino

jue. 11/27

11:15 am-12:33 pm

2 stops34h 18m

$490

OntarioRome

ONT - FCO

ONTFCO

Ontario

lun. 12/1

5:40 am-11:05 am

2 stops20h 25m

Rome Fiumicino

mar. 12/9

12:45 pm-8:43 pm

2 stops40h 58m

$497

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 11/9

6:38 am-7:30 pm

2 stops27h 52m

Rome Fiumicino

jue. 11/20

11:00 am-10:00 pm

1 stop20h 00m

$520

OntarioRome

ONT - FCO

ONTFCO

Ontario

lun. 9/22

2:54 pm-6:35 pm

2 stops18h 41m

Rome Fiumicino

mié. 10/8

10:00 am-7:03 pm

1 stop18h 03m

$543

OntarioRome

ONT - FCO

ONTFCO

Ontario

lun. 11/3

11:59 pm-9:00 am

2 stops24h 01m

Rome Fiumicino

lun. 11/10

11:00 am-8:44 am

2 stops30h 44m

$566

OntarioRome

ONT - FCO

ONTFCO

Ontario

lun. 10/13

12:59 am-12:55 am

3 stops38h 56m

$301

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 10/12

10:59 pm-7:35 am

1 stop23h 36m

$388

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 11/23

10:59 pm-7:55 am

1 stop23h 56m

$393

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 15 results
1
2

Best time to book a flight from Ontario to Rome

Have a flexible travel schedule? Discover the best time to fly to Rome from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Rome

What is the cheapest month to book a flight from Ontario to Rome?

Currently, January is the cheapest month in which you can book a flight from Ontario to Rome (average of $644). Flying from Ontario to Rome in June is currently the most expensive (average of $1,141). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to ROM?

Find hourly flight availability from Ontario to Rome. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 30, 2025.

It’s optimal to fly from Ontario to Rome in the evening. By choosing this option you can save up to 38% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Rome

Get insights into the airlines that provide service to Rome. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Rome. Reviews last updated junio 30, 2025.
Get a feel of what it's like to fly with Delta, KLM, and United Airlines from Ontario to Rome by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,365 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.1
Good
9,654 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Rome. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Rome?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Rome. 5 airlines have flights from Ontario to Rome on a regular basis. Booking flights from Ontario to Rome should not be difficult; the airport handles an average of 0 outbound flights to Rome per day.

  • What are the cheapest airlines flying from Ontario to Rome round-trip?

    Our cheapest airline available from Ontario to Rome is KLM. Our recent data shows that you can find tickets from as low as $475 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $480 and $490 round-trip. KLM is 42% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Ontario to Rome one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $388. Users have also found prices from $393 and $399 on KLM and United Airlines, respectively.

  • Can I find deals for flights from Ontario to Rome that include hotel bookings?

    Yes. In addition to deals on Ontario to Rome flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Rome?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Rome.

  • Can I find deals for business class flights from Ontario to Rome?

    Yes. Cheapflights offers flight deals from Ontario to Rome by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Rome?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Rome (average of $644). Flying from Ontario to Rome in June is currently the most expensive (average of $1,141). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Fiumicino
Gaeta
Ciampino
Montepulciano

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Rome

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Leonardo da Vinci/Fiumicino flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Ontario to Leonardo da Vinci/Fiumicino flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
Burbank to Leonardo da Vinci/Fiumicino flights
San Jose to Leonardo da Vinci/Fiumicino flights
Oakland to Leonardo da Vinci/Fiumicino flights
San Diego to Leonardo da Vinci/Fiumicino flights
Las Vegas to Leonardo da Vinci/Fiumicino flights
Los Angeles to Ciampino flights
Sacramento to Leonardo da Vinci/Fiumicino flights
Fresno to Leonardo da Vinci/Fiumicino flights
Long Beach to Leonardo da Vinci/Fiumicino flights
San Francisco to Ciampino flights
Palm Springs to Leonardo da Vinci/Fiumicino flights
Reno to Leonardo da Vinci/Fiumicino flights
Medford to Leonardo da Vinci/Fiumicino flights
Santa Barbara to Leonardo da Vinci/Fiumicino flights
San Luis Obispo to Leonardo da Vinci/Fiumicino flights
Santa Rosa to Leonardo da Vinci/Fiumicino flights
Redding to Leonardo da Vinci/Fiumicino flights
Monterey to Leonardo da Vinci/Fiumicino flights
Arcata to Leonardo da Vinci/Fiumicino flights
Las Vegas to Ciampino flights
Oakland to Ciampino flights

Top 5 airlines flying from Ontario to Rome

Discover the top 5 airlines that operate flights from Ontario to Rome. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$514Average$774FlexibilityNo cancel feeOn-time70%
DeltaCheapest$534Average$765FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$538Average$797FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$569Average$843FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$859Average$1,288FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.