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Leonardo da Vinci/Fiumicino

$368+ Cheap flights from Ontario (ONT) to Fiumicino (FCO)

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FCO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Ontario to Leonardo da Vinci/Fiumicino

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Leonardo da Vinci/Fiumicino (FCO). 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 June 12, 2025.

Round-trip from

$542
(United Airlines)

One-way from

$368
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,426
From Ontario to Rome Fiumicino
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One-way flight from Ontario to Rome Fiumicino
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Highest demand for flights based on searches. 1% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Ontario to Leonardo da Vinci/Fiumicino

Cheapest flights from Ontario to Leonardo da Vinci/Fiumicino
Explore the most affordable flight options available from Ontario to Leonardo da Vinci/Fiumicino. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This KLM deal was found by Cheapflights users on 6/11. 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.
Wed 11/127:00 amONT - FCO
1 stop18h 30mKLM
Wed 11/1910:15 amFCO - ONT
1 stop18h 27mKLM
Deal found 6/11$447
This Finnair deal was found by Cheapflights users on 6/11. 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.
Sat 11/811:59 pmONT - FCO
1 stop25h 46mMultiple Airlines
Wed 11/191:10 pmFCO - ONT
2 stops19h 35mMultiple Airlines
Deal found 6/11$465
This Travelocity deal was found by Cheapflights users on 6/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/811:59 pmONT - FCO
2 stops32h 46mBritish Airways
Wed 11/197:50 amFCO - ONT
2 stops22h 51mBritish Airways
Deal found 6/11$493
This flugladen.de deal was found by Cheapflights users on 6/10. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:48 amONT - FCO
1 stop16h 57mIberia
Wed 12/2411:00 amFCO - ONT
1 stop21h 48mIberia
Deal found 6/10$498
This United Airlines deal was found by Cheapflights users on 6/11. 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 12/97:00 amONT - FCO
1 stop15h 45mUnited Airlines
Fri 1/99:45 amFCO - ONT
2 stops23h 40mUnited Airlines
Deal found 6/11$508
This Delta deal was found by Cheapflights users on 6/11. 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.
Tue 12/97:00 amONT - FCO
1 stop18h 30mDelta
Thu 1/86:00 amFCO - ONT
2 stops25h 38mDelta
Deal found 6/11$531
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:10 amONT - FCO
2 stops19h 05mAir Canada
Fri 9/512:25 pmFCO - ONT
2 stops41h 18mAir Canada
Deal found 6/12$549

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Leonardo da Vinci/Fiumicino 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 June 12, 2025.
Use the filters below to find and compare flights from Ontario to Rome Fiumicino Airport that are best for you.

Fly from

Ontario

Fly to

Leonardo da Vinci/Fiumicino

Route

Depart

Return

Price

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 8/2

1:19 pm-9:15 am

2 stops34h 56m

Rome Fiumicino

Fri 8/22

11:30 am-10:30 pm

2 stops44h 00m

$542

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/26

5:10 am-9:15 am

2 stops19h 05m

Rome Fiumicino

Fri 9/5

12:25 pm-8:43 pm

2 stops41h 18m

$549

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/4

8:15 am-8:05 am

1 stop14h 50m

Rome Fiumicino

Wed 8/20

10:00 am-6:24 pm

1 stop17h 24m

$556

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/4

7:05 am-7:35 am

1 stop15h 30m

Rome Fiumicino

Wed 8/20

9:45 am-7:11 pm

1 stop18h 26m

$557

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/19

7:05 am-11:05 am

1 stop19h 00m

Rome Fiumicino

Tue 9/16

11:35 am-10:41 pm

1 stop20h 06m

$565

OntarioRome

ONT - FCO

ONTFCO

Ontario

Thu 7/10

8:15 am-8:05 am

1 stop14h 50m

Rome Fiumicino

Fri 7/18

7:35 am-10:10 pm

2 stops23h 35m

$698

OntarioRome

ONT - FCO

ONTFCO

Ontario

Fri 6/20

7:02 pm-7:05 am

2 stops51h 03m

Rome Fiumicino

Fri 7/11

6:55 am-10:57 pm

2 stops25h 02m

$891

OntarioRome

ONT - FCO

ONTFCO

Ontario

Fri 8/1

12:59 am-2:35 pm

2 stops28h 36m

$368

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 7/21

6:28 pm-9:15 am

2 stops29h 47m

$425

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/25

7:00 am-7:55 am

1 stop15h 55m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 16 results
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Best time to book a flight from Ontario to Leonardo da Vinci/Fiumicino

Have a flexible travel schedule? Discover the best time to fly to Leonardo da Vinci/Fiumicino 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 Fiumicino Airport

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Rome Fiumicino Airport (average of $644). Flying from Ontario to Rome Fiumicino Airport in June is currently the most expensive (average of $1,142). 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 FCO?

Find hourly flight availability from Ontario to Leonardo da Vinci/Fiumicino. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 27% on flights from Ontario to Rome Fiumicino Airport by exploring options for tickets in the afternoon.

Rainfall in Leonardo da Vinci/Fiumicino by month

Plan your trip to Leonardo da Vinci/Fiumicino by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Rome Fiumicino Airport 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 Fiumicino Airport when rainfall is around 0.6 in.

Temperature in Leonardo da Vinci/Fiumicino by month

Plan your trip to Leonardo da Vinci/Fiumicino by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Rome Fiumicino Airport, 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 Leonardo da Vinci/Fiumicino

Get insights into the airlines that provide service to Leonardo da Vinci/Fiumicino. 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 Leonardo da Vinci/Fiumicino. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Austrian Airlines from Ontario to Rome to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

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
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

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.
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

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
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

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 Leonardo da Vinci/Fiumicino. 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 Fiumicino?

    For a flight from Ontario to Rome Fiumicino, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city. Ontario is the only Ontario airport and it handles 0 outbound flights to Rome Fiumicino per day. 5 airlines have flights to Rome Fiumicino from Ontario on a regular basis.

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

    Currently priced at $542, United Airlines will fly you from Ontario to Rome Fiumicino Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and British Airways - these airlines can fly you to your destination from $549 and $556, respectively. United Airlines is priced at 49% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airlines for a one-way flight from Ontario to Rome Fiumicino Airport are Air Canada ($425), United Airlines ($429), and British Airways ($478).

  • Can I find deals for flights from Ontario to Leonardo da Vinci/Fiumicino that include hotel bookings?

    Yes. In addition to deals on Ontario to Leonardo da Vinci/Fiumicino flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Leonardo da Vinci/Fiumicino?

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

  • Can I find deals for business class flights from Ontario to Leonardo da Vinci/Fiumicino?

    Yes. Cheapflights offers flight deals from Ontario to Leonardo da Vinci/Fiumicino 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 Fiumicino Airport?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Rome Fiumicino Airport (average of $644). Flying from Ontario to Rome Fiumicino Airport in June is currently the most expensive (average of $1,142). 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 Leonardo da Vinci/Fiumicino

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 Leonardo da Vinci/Fiumicino

Discover the top 5 airlines that operate flights from Ontario to Leonardo da Vinci/Fiumicino. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$514Average$949FlexibilityNo cancel feeOn-time70%
DeltaCheapest$534Average$1,043FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$574Average$1,021FlexibilityNo cancel feeOn-time69%
KLMCheapest$591Average$964FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$859Average$1,288FlexibilityNo cancel feeOn-time71%

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