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$388+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ROM
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$487
(Billigflug)

One-way from

$388
(KLM)

Popular in

May

Cheapest in

December

Average price

$574
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. 15% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This Billigflug deal was found by Cheapflights users on 8/14. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:00 amONT - FCO
1 stop18h 30mAir France
Wed 11/2610:05 amFCO - ONT
1 stop18h 37mAir France
Deal found 8/14$489
This Iberia deal was found by Cheapflights users on 8/12. 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.
Mon 10/2710:57 amONT - FCO
2 stops20h 33mIberia
Thu 11/1311:35 amFCO - ONT
1 stop19h 48mIberia
Deal found 8/12$500
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Wed 11/125:05 amONT - FCO
2 stops18h 50mUnited Airlines
Wed 11/269:45 amFCO - ONT
1 stop21h 46mUnited Airlines
Deal found 8/14$506
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Tue 11/117:00 amONT - FCO
1 stop15h 45mUnited Airlines
Tue 11/187:05 amFCO - ONT
2 stops20h 31mUnited Airlines
Deal found 8/14$509
This Iberia deal was found by Cheapflights users on 8/14. 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.
Mon 8/258:14 amONT - FCO
1 stop14h 51mIberia
Fri 11/2111:35 amFCO - ONT
1 stop21h 22mIberia
Deal found 8/14$511
This British Airways deal was found by Cheapflights users on 8/12. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/208:14 amONT - FCO
2 stops21h 11mBritish Airways
Wed 8/2710:00 amFCO - ONT
1 stop17h 24mBritish Airways
Deal found 8/12$521
This Iberia deal was found by Cheapflights users on 8/14. 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.
Mon 8/258:14 amONT - FCO
1 stop14h 51mIberia
Fri 9/127:35 amFCO - ONT
2 stops20h 19mIberia
Deal found 8/14$524
This lol.travel deal was found by Cheapflights users on 8/13. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:31 pmONT - FCO
1 stop32h 49mUnited Airlines
Fri 8/292:20 pmFCO - ONT
1 stop15h 23mUnited Airlines
Deal found 8/13$528
This oojo deal was found by Cheapflights users on 8/14. 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.
Tue 8/1912:22 pmONT - FCO
2 stops22h 33mBritish Airways
Tue 8/2610:00 amFCO - ONT
1 stop17h 24mBritish Airways
Deal found 8/14$530
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Wed 8/131:34 pmONT - FCO
1 stop13h 46mUnited Airlines
Wed 8/209:45 amFCO - ONT
1 stop21h 45mUnited Airlines
Deal found 8/12$536

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 August 14, 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

Tue 1/13

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Tue 1/27

12:40 pm-11:38 am

1 stop31h 58m

$487

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/12

5:05 am-8:55 am

2 stops18h 50m

Rome Fiumicino

Wed 11/26

9:45 am-10:31 pm

1 stop21h 46m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 11/9

5:05 am-8:55 am

2 stops18h 50m

Rome Fiumicino

Wed 11/19

9:45 am-10:31 pm

1 stop21h 46m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 2/10

5:40 am-9:25 am

2 stops18h 45m

Rome Fiumicino

Tue 2/24

9:45 am-10:26 pm

1 stop21h 41m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 1/12

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Tue 1/20

12:40 pm-11:38 am

1 stop31h 58m

$508

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 1/12

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Thu 1/22

12:40 pm-11:38 am

1 stop31h 58m

$508

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 1/11

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Fri 1/23

12:40 pm-11:38 am

1 stop31h 58m

$508

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 1/11

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Wed 1/21

12:40 pm-11:38 am

1 stop31h 58m

$508

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 1/13

10:30 pm-10:30 am

1 stop27h 00m

Rome Fiumicino

Fri 1/23

12:40 pm-11:38 am

1 stop31h 58m

$508

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/20

11:36 am-11:05 am

1 stop14h 29m

$388

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

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 $1,135). 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 August 14, 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.

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 August 14, 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
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
1,381 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
7,266 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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 British Airways. Our recent data shows that you can find tickets from as low as $514 on this airline. Additional options worth looking into are Delta and KLM, starting at $519 and $520 round-trip. British Airways is 33% 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 KLM. According to our data, you can fly for as low as $388. Users have also found prices from $398 and $399 on British Airways 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 $1,135). 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
Gaeta
Ciampino
Montepulciano
Santa Marinella

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Alternative routes for Ontario to Rome

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$514Average$738FlexibilityNo cancel feeOn-time70%
DeltaCheapest$519Average$650FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$520Average$717FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$569Average$830FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$859Average$1,288FlexibilityNo cancel feeOn-time71%

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