HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Rome

$290+ 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 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ROM
dic. 6 — dic. 131
sáb. 12/6
sáb. 12/13
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 noviembre 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$465
(KLM)

One-way from

$290
(Trip.com)

Popular in

May

Cheapest in

December

Average price

$604
Provider with most accurate pricing for Ontario-Rome (ROM) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Rome (ROM) flights.
Search Deals
From Ontario to Rome (ROM)
Search Deals
One-way flight from Ontario to Rome (ROM)
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($159 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 noviembre 6, 2025.

This KLM deal was found by Cheapflights users on 11/6. 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.
mié. 11/267:05 amONT - FCO
1 stop15h 50mKLM
mié. 12/1010:05 amFCO - ONT
1 stop18h 34mKLM
Deal found 11/6$496
This United Airlines deal was found by Cheapflights users on 11/5. 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.
dom. 12/76:00 amONT - FCO
2 stops18h 25mUnited Airlines
mié. 12/1712:20 pmFCO - ONT
2 stops19h 29mUnited Airlines
Deal found 11/5$504
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1110:47 amONT - FCO
1 stop14h 58mIberia
lun. 12/151:10 pmFCO - ONT
1 stop18h 18mIberia
Deal found 11/6$505
This United Airlines deal was found by Cheapflights users on 11/6. 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. 11/267:00 amONT - FCO
1 stop15h 45mUnited Airlines
mié. 12/109:45 amFCO - ONT
2 stops22h 04mUnited Airlines
Deal found 11/6$506
This United Airlines deal was found by Cheapflights users on 11/4. 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.
sáb. 11/156:38 pmONT - FCO
2 stops28h 52mUnited Airlines
mar. 11/257:05 amFCO - ONT
2 stops19h 29mUnited Airlines
Deal found 11/4$507
This United Airlines deal was found by Cheapflights users on 11/6. 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.
sáb. 12/66:00 amONT - FCO
2 stops16h 45mUnited Airlines
sáb. 12/139:45 amFCO - ONT
2 stops22h 04mUnited Airlines
Deal found 11/6$510
This United Airlines deal was found by Cheapflights users on 11/6. 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.
mar. 12/3011:59 pmONT - FCO
2 stops22h 56mUnited Airlines
dom. 1/1112:20 pmFCO - ONT
2 stops43h 33mUnited Airlines
Deal found 11/6$518
This United Airlines deal was found by Cheapflights users on 11/5. 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.
dom. 11/301:29 pmONT - FCO
2 stops19h 26mUnited Airlines
jue. 12/119:40 amFCO - ONT
2 stops20h 02mUnited Airlines
Deal found 11/5$521
This oojo deal was found by Cheapflights users on 11/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/53:04 pmONT - FCO
2 stops18h 06mBritish Airways
mar. 12/97:25 amFCO - ONT
2 stops24h 03mBritish Airways
Deal found 11/6$536
This United Airlines deal was found by Cheapflights users on 11/6. 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.
vie. 11/75:05 amONT - FCO
2 stops18h 25mUnited Airlines
vie. 11/141:15 pmFCO - ONT
2 stops42h 16mUnited Airlines
Deal found 11/6$537
This oojo deal was found by Cheapflights users on 11/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/103:04 pmONT - FCO
1 stop34h 41mBritish Airways
vie. 1/168:35 amFCO - ONT
2 stops23h 13mBritish Airways
Deal found 11/5$545

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 noviembre 6, 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

lun. 1/12

6:39 pm-9:25 am

2 stops29h 46m

Rome Fiumicino

dom. 1/18

1:45 pm-10:53 pm

2 stops18h 08m

$502

OntarioRome

ONT - FCO

ONTFCO

Ontario

mié. 11/26

7:05 am-7:55 am

1 stop15h 50m

Rome Fiumicino

mié. 12/10

10:05 am-7:39 pm

1 stop18h 34m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

sáb. 1/10

1:53 pm-11:00 pm

2 stops24h 07m

Rome Fiumicino

dom. 1/18

7:05 am-10:53 pm

2 stops24h 48m

$510

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 11/30

1:29 pm-5:55 pm

2 stops19h 26m

Rome Fiumicino

jue. 12/11

9:40 am-8:42 pm

2 stops20h 02m

$521

OntarioRome

ONT - FCO

ONTFCO

Ontario

jue. 1/8

1:24 pm-5:50 pm

2 stops19h 26m

Rome Fiumicino

jue. 1/29

12:20 pm-10:53 pm

2 stops19h 33m

$524

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 1/11

3:30 pm-4:25 pm

2 stops39h 55m

Rome Fiumicino

dom. 1/18

12:40 pm-11:54 am

1 stop32h 14m

$526

OntarioRome

ONT - FCO

ONTFCO

Ontario

vie. 12/5

3:04 pm-6:10 pm

2 stops18h 06m

Rome Fiumicino

mar. 12/9

7:25 am-10:28 pm

2 stops24h 03m

$536

OntarioRome

ONT - FCO

ONTFCO

Ontario

jue. 11/27

7:00 am-7:45 am

1 stop15h 45m

Rome Fiumicino

jue. 12/11

7:05 am-5:37 pm

2 stops19h 32m

$552

OntarioRome

ONT - FCO

ONTFCO

Ontario

mié. 11/12

5:05 am-8:55 am

2 stops18h 50m

Rome Fiumicino

sáb. 12/6

12:20 pm-10:49 pm

2 stops19h 29m

$554

OntarioRome

ONT - FCO

ONTFCO

Ontario

vie. 11/28

10:47 am-10:45 am

1 stop14h 58m

Rome Fiumicino

vie. 12/5

1:10 pm-10:28 pm

1 stop18h 18m

$556

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 23 results
1
2
3

Compare providers for flights from Ontario to Rome

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Rome in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Rome flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Rome flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Rome flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Rome flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Rome flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, April is the cheapest month in which you can book a flight from Ontario to Rome (average of $376). Flying from Ontario to Rome in June is currently the most expensive (average of $598). 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 noviembre 6, 2025.

It’s optimal to fly from Ontario to Rome in the afternoon. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Ontario to Rome?

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 noviembre 6, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and British Airways 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
7.9
Good
8,004 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.2

Entertainment

7.9

Comfort

7.9

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
7.9
Good
8,004 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.2

Entertainment

7.9

Comfort

7.9

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
9,003 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.2

Entertainment

7.9

Comfort

7.9

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.
British Airways
6.7
Okay
7,496 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.2

Entertainment

7.9

Comfort

7.9

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. 4 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.

  • How long is the flight from Ontario to Rome?

    Departing from Ontario to Rome will take you 15h 50m. Ontario and Rome are separated by a distance of 6303 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Our cheapest airline available from Ontario to Rome is Delta. Our recent data shows that you can find tickets from as low as $479 on this airline. Additional options worth looking into are British Airways and United Airlines, starting at $487 and $508 round-trip. Delta is 35% 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 British Airways. According to our data, you can fly for as low as $397. Users have also found prices from $397 and $399 on Iberia 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, April is the cheapest month in which you can book a flight from Ontario to Rome (average of $376). Flying from Ontario to Rome in June is currently the most expensive (average of $598). 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 Rome?

Book flights to Rome if you plan to visit one of these locations
Fiumicino
Montepulciano
Santa Marinella

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
San Diego to Leonardo da Vinci/Fiumicino flights
Oakland to Leonardo da Vinci/Fiumicino flights
Sacramento to Leonardo da Vinci/Fiumicino flights
Los Angeles to Ciampino flights
San Francisco to Ciampino flights
Las Vegas to Leonardo da Vinci/Fiumicino flights
Fresno to Leonardo da Vinci/Fiumicino flights
Reno to Leonardo da Vinci/Fiumicino flights
Santa Barbara to Leonardo da Vinci/Fiumicino flights
Palm Springs to Leonardo da Vinci/Fiumicino flights
San Luis Obispo to Leonardo da Vinci/Fiumicino flights
Long Beach to Leonardo da Vinci/Fiumicino flights
Santa Rosa to Leonardo da Vinci/Fiumicino flights
Monterey to Leonardo da Vinci/Fiumicino flights
Medford to Leonardo da Vinci/Fiumicino flights
Arcata to Leonardo da Vinci/Fiumicino flights
Las Vegas to Ciampino flights
Redding to Leonardo da Vinci/Fiumicino flights
Oakland to Ciampino flights

Top 4 airlines flying from Ontario to Rome

Discover the top 4 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 noviembre 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$479Average$590FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$487Average$575FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$508Average$776FlexibilityNo cancel feeOn-time69%
KLMCheapest$520Average$704FlexibilityNo cancel feeOn-time75%

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.