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Leonardo da Vinci/Fiumicino

$301+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FCO
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
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 July 1, 2025.

Round-trip from

$475
(KLM)

One-way from

$301
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$796
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. 2% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 1, 2025.

This KLM deal was found by Cheapflights users on 7/1. 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 12/316:52 amONT - FCO
1 stop16h 03mKLM
Wed 1/1412:45 pmFCO - ONT
1 stop17h 29mKLM
Deal found 7/1$468
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.
Tue 11/1110:59 pmONT - FCO
1 stop23h 56mDelta
Wed 11/1910:15 amFCO - ONT
2 stops33h 35mDelta
Deal found 6/30$480
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.
Mon 12/15:40 amONT - FCO
2 stops20h 25mAir Canada
Tue 12/912:45 pmFCO - ONT
2 stops40h 58mAir Canada
Deal found 6/29$497
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:00 amONT - FCO
1 stop15h 45mUnited Airlines
Wed 12/109:45 amFCO - ONT
2 stops22h 00mUnited Airlines
Deal found 6/29$506
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.
Sun 11/96:38 amONT - FCO
2 stops27h 52mIberia
Thu 11/2011:00 amFCO - ONT
1 stop20h 00mIberia
Deal found 6/29$520
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/272:57 pmONT - FCO
2 stops19h 18mBritish Airways
Thu 9/410:00 amFCO - ONT
1 stop21h 33mBritish Airways
Deal found 6/30$524

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 July 1, 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

Tue 11/11

10:59 pm-7:55 am

1 stop23h 56m

Rome Fiumicino

Wed 11/19

12:45 pm-10:41 pm

1 stop18h 56m

$475

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/11

10:59 pm-7:55 am

1 stop23h 56m

Rome Fiumicino

Wed 11/19

10:15 am-10:50 am

2 stops33h 35m

$480

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 12/1

5:40 am-11:05 am

2 stops20h 25m

Rome Fiumicino

Tue 12/9

12:45 pm-8:43 pm

2 stops40h 58m

$497

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/26

7:00 am-7:45 am

1 stop15h 45m

Rome Fiumicino

Wed 12/10

9:45 am-10:45 pm

2 stops22h 00m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 11/9

6:38 am-7:30 pm

2 stops27h 52m

Rome Fiumicino

Thu 11/20

11:00 am-10:00 pm

1 stop20h 00m

$520

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 8/27

2:57 pm-7:15 pm

2 stops19h 18m

Rome Fiumicino

Thu 9/4

10:00 am-10:33 pm

1 stop21h 33m

$524

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/13

12:59 am-12:55 am

3 stops38h 56m

$301

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 10/12

10:59 pm-7:35 am

1 stop23h 36m

$388

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/13

6:37 pm-9:15 am

2 stops29h 38m

$399

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 11/10

5:01 pm-7:15 pm

2 stops17h 14m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 14 results
1
2

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 $1,141). 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 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 July 1, 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.

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 July 1, 2025.
Read reviews from past customers who have flown Delta, KLM, and United Airlines from Ontario to Rome Fiumicino Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

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
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

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
1,366 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

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
8,858 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

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.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

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.
Air Canada
7.1
Good
9,665 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

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 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 $475, KLM will fly you from Ontario to Rome Fiumicino Airport and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Air Canada - these airlines can fly you to your destination from $480 and $497, respectively. KLM is priced at 55% 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 KLM ($388), United Airlines ($399), and American Airlines ($402).

  • 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 $1,141). 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
Santa Marinella

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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 July 1, 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%

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