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$370+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ROM
May 25 — Jun 11
Sun 5/25
Sun 6/1
1 adult, Economy
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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 May 20, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$494
(Delta)

One-way from

$370
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$1,067
Provider with most accurate pricing for Ontario-Rome (ROM) flight deals.
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Provider most trusted by Cheapflights users for Ontario-Rome (ROM) flights.
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From Ontario to Rome (ROM)
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One-way flight from Ontario to Rome (ROM)
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Highest demand for flights based on searches. 24% potential increase in price ($283 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 20, 2025.

This Finnair deal was found by Cheapflights users on 5/18. 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.
Wed 11/128:46 amONT - FCO
1 stop16h 59mMultiple Airlines
Wed 11/191:10 pmFCO - ONT
2 stops19h 35mMultiple Airlines
Deal found 5/18$459
This Ovago deal was found by Cheapflights users on 5/19. 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.
Tue 12/93:05 pmONT - FCO
2 stops16h 40mBritish Airways
Fri 12/1911:00 amFCO - ONT
1 stop21h 48mBritish Airways
Deal found 5/19$472
This Delta deal was found by Cheapflights users on 5/19. 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.
Sun 6/297:05 amONT - FCO
1 stop19h 00mDelta
Fri 8/159:45 amFCO - ONT
1 stop18h 26mDelta
Deal found 5/19$494
This KLM deal was found by Cheapflights users on 5/20. 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.
Sun 11/1610:59 pmONT - FCO
1 stop23h 56mKLM
Fri 12/510:15 amFCO - ONT
1 stop21h 26mKLM
Deal found 5/20$498
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Mon 11/177:00 amONT - FCO
1 stop15h 45mUnited Airlines
Thu 12/49:45 amFCO - ONT
1 stop21h 41mUnited Airlines
Deal found 5/20$504
This Iberia deal was found by Cheapflights users on 5/19. 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.
Wed 9/103:00 pmONT - FCO
2 stops18h 15mIberia
Sat 9/2010:00 amFCO - ONT
1 stop22h 36mIberia
Deal found 5/19$587
This Air Canada deal was found by Cheapflights users on 5/19. 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.
Mon 6/95:10 amONT - FCO
2 stops21h 35mAir Canada
Tue 6/1711:30 amFCO - ONT
2 stops18h 34mAir Canada
Deal found 5/19$636
This Vliegwinkel deal was found by Cheapflights users on 5/20. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/11:15 pmONT - FCO
1 stop14h 05mBrussels Airlines
Tue 9/303:40 pmFCO - ONT
1 stop16h 12mBrussels Airlines
Deal found 5/20$752

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 May 20, 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

Sun 6/29

7:05 am-11:05 am

1 stop19h 00m

Rome Fiumicino

Thu 8/14

2:30 pm-10:20 pm

1 stop16h 50m

$494

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/4

7:05 am-7:35 am

1 stop15h 30m

Rome Fiumicino

Wed 8/13

9:45 am-10:20 pm

1 stop21h 35m

$514

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 8/16

11:59 pm-8:05 am

1 stop23h 06m

Rome Fiumicino

Thu 8/28

6:55 am-6:17 pm

2 stops20h 22m

$541

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 5/31

5:10 am-9:15 am

2 stops43h 05m

Rome Fiumicino

Fri 6/13

11:30 am-10:26 pm

2 stops43h 56m

$606

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 5/26

10:53 am-1:55 pm

2 stops18h 02m

Rome Fiumicino

Mon 6/2

4:15 pm-11:43 pm

2 stops40h 28m

$610

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 6/9

5:10 am-11:45 am

2 stops21h 35m

Rome Fiumicino

Tue 6/17

11:30 am-9:04 pm

2 stops18h 34m

$636

OntarioRome

ONT - FCO

ONTFCO

Ontario

Thu 6/5

7:00 am-9:15 am

2 stops17h 15m

Rome Fiumicino

Thu 6/19

11:30 am-9:04 pm

2 stops18h 34m

$690

OntarioRome

ONT - FCO

ONTFCO

Ontario

Fri 7/11

9:41 pm-11:55 am

2 stops53h 14m

$370

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/5

1:34 pm-12:20 pm

1 stop13h 46m

$427

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 7/19

11:59 pm-8:05 am

1 stop23h 06m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/19

Showing 1-10 of 16 results
1
2

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Rome flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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, 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 $1,164). 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 May 20, 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.

Rainfall in Rome by month

Plan your trip to Rome by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Rome ranges from 0.6 - 4.4 inches per month. November is typically the wettest month, when rainfall can reach 4.4 in. June is typically the driest time to visit Rome when rainfall is around 0.6 in.

Temperature in Rome by month

Plan your trip to Rome by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Rome, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 46.4 F).

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 May 20, 2025.
To help decide which airline to fly from Ontario to Rome, see what other customers have to say about Delta, KLM and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,951 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
7,951 reviews
Delta
8.0
Very good
7,951 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
1,346 reviews
Delta
8.0
Very good
7,951 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
8,744 reviews
Delta
8.0
Very good
7,951 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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.
Turkish Airlines
7.3
Good
3,810 reviews
Delta
8.0
Very good
7,951 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
7,951 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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 Delta. Our recent data shows that you can find tickets from as low as $494 on this airline. Additional options worth looking into are KLM and British Airways, starting at $514 and $541 round-trip. Delta 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 United Airlines. According to our data, you can fly for as low as $427. Users have also found prices from $439 and $448 on British Airways and Air Canada, 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 $1,164). 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

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Alternative routes for Ontario to Rome

See prices for flight routes from nearby airports that may be better suited for you.
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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 May 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$541Average$1,126FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$574Average$1,105FlexibilityNo cancel feeOn-time69%
KLMCheapest$591Average$1,064FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$859Average$1,288FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$924Average$1,118FlexibilityNo cancel feeOn-time70%

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