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Leonardo da Vinci/Fiumicino

$335+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FCO
Jun 28 — Jul 51
Sun 6/28
Sun 7/5
1 adult, Economy
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Cheap 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 May 29, 2026.

This United Airlines deal was found by Cheapflights users on 5/26. 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 11/117:00 am
ONT
-
FCO
1 stop15h 45m
United Airlines
Wed 11/181:15 pm
FCO
-
ONT
2 stops42h 11m
United Airlines
Deal found 5/26$707
This Air Canada deal was found by Cheapflights users on 5/26. 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.
Sun 8/165:00 am
ONT
-
FCO
2 stops19h 15m
Multiple Airlines
Fri 8/2812:25 pm
FCO
-
ONT
2 stops32h 47m
Multiple Airlines
Deal found 5/26$716
This United Airlines deal was found by Cheapflights users on 5/27. 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.
Sun 11/157:00 am
ONT
-
FCO
1 stop15h 45m
United Airlines
Tue 11/2410:30 am
FCO
-
ONT
2 stops42h 50m
United Airlines
Deal found 5/27$718
This oojo deal was found by Cheapflights users on 5/26. 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.
Sun 8/166:00 am
ONT
-
FCO
1 stop21h 05m
British Airways
Thu 8/271:10 pm
FCO
-
ONT
1 stop17h 02m
British Airways
Deal found 5/26$719
This oojo deal was found by Cheapflights users on 5/26. 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 8/1112:33 pm
ONT
-
FCO
1 stop14h 32m
British Airways
Wed 8/191:10 pm
FCO
-
ONT
1 stop38h 37m
British Airways
Deal found 5/26$724
This British Airways deal was found by Cheapflights users on 5/26. 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 8/1212:33 pm
ONT
-
FCO
2 stops19h 22m
British Airways
Thu 8/201:30 pm
FCO
-
ONT
1 stop17h 34m
British Airways
Deal found 5/26$725
This United Airlines deal was found by Cheapflights users on 5/27. 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 8/171:18 pm
ONT
-
FCO
1 stop14h 02m
United Airlines
Fri 8/2810:00 am
FCO
-
ONT
2 stops19h 53m
United Airlines
Deal found 5/27$726
This Iberia deal was found by Cheapflights users on 5/26. 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 8/1210:29 am
ONT
-
FCO
1 stop16h 36m
Iberia
Thu 8/201:10 pm
FCO
-
ONT
1 stop17h 02m
Iberia
Deal found 5/26$727
This Mytrip deal was found by Cheapflights users on 5/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:00 am
ONT
-
FCO
2 stops19h 15m
Multiple Airlines
Thu 8/2010:00 am
FCO
-
ONT
2 stops20h 59m
Multiple Airlines
Deal found 5/26$729
This United Airlines deal was found by Cheapflights users on 5/26. 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 11/95:00 am
ONT
-
FCO
2 stops20h 55m
United Airlines
Tue 11/179:55 am
FCO
-
ONT
2 stops22h 11m
United Airlines
Deal found 5/26$730

Find 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 May 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$707
(United Airlines)

One-way from

$335
(Cheapflightsfares)

Popular in

May

Cheapest in

October

Average price

$1,113
Provider with most accurate pricing for Ontario-Rome Fiumicino flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Rome Fiumicino flights.
Search Deals
From Ontario to Rome Fiumicino
Search Deals
One-way flight from Ontario to Rome Fiumicino
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 29, 2026.
Use the filters below to find and compare flights from Ontario to Rome Fiumicino Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/18

5:00 am-7:55 am

2 stops17h 55m

Rome Fiumicino

Mon 11/30

1:30 pm-5:47 pm

2 stops37h 17m

$782

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/10

6:02 am-1:15 pm

1 stop22h 13m

Rome Fiumicino

Wed 8/19

3:25 pm-11:24 pm

1 stop16h 59m

$920

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 8/1

1:18 pm-9:15 am

2 stops34h 57m

Rome Fiumicino

Mon 8/10

10:20 am-12:50 pm

2 stops35h 30m

$987

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 9/6

5:00 am-12:20 pm

1 stop22h 20m

Rome Fiumicino

Mon 9/14

10:00 am-12:50 pm

2 stops35h 50m

$997

OntarioRome

ONT - FCO

ONTFCO

Ontario

Fri 11/20

10:59 pm-11:00 am

2 stops51h 01m

Rome Fiumicino

Wed 12/2

6:10 am-4:12 pm

2 stops19h 02m

$1,003

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 11/21

11:59 pm-10:45 am

1 stop25h 46m

Rome Fiumicino

Thu 12/3

5:50 pm-10:19 pm

2 stops37h 29m

$1,004

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 10/6

7:00 am-7:35 am

1 stop15h 35m

Rome Fiumicino

Wed 10/14

9:45 am-6:18 pm

1 stop17h 33m

$1,040

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 10/7

7:00 am-7:35 am

1 stop15h 35m

Rome Fiumicino

Tue 10/13

9:45 am-6:18 pm

1 stop17h 33m

$1,040

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 11/24

7:00 am-8:15 am

1 stop16h 15m

Rome Fiumicino

Wed 12/2

1:30 pm-10:14 pm

1 stop17h 44m

$1,046

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 11/18

7:00 am-8:15 am

1 stop16h 15m

Rome Fiumicino

Wed 12/2

1:30 pm-10:14 pm

1 stop17h 44m

$1,047

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/26

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Ontario to Leonardo da Vinci/Fiumicino

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 Leonardo da Vinci/Fiumicino in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
BusinessClassPrice 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 Fiumicino Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Rome Fiumicino Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Rome Fiumicino Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Rome Fiumicino Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Fiumicino Airport 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 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

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

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 May 29, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andBritish Airways 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
7.9
Good
8,420 reviews

Overall

7.9

Crew

8.5

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Food

7.2

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
8,420 reviews
Delta
7.9
Good
8,420 reviews

Overall

7.9

Crew

8.5

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Food

7.2

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
9,763 reviews
Delta
7.9
Good
8,420 reviews

Overall

7.9

Crew

8.5

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Food

7.2

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
8,008 reviews
Delta
7.9
Good
8,420 reviews

Overall

7.9

Crew

8.5

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Food

7.2

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. 3 airlines have flights to Rome Fiumicino from Ontario on a regular basis.

  • How long is the flight from Ontario to Rome Fiumicino Airport?

    There are many flights that can get you from Ontario to Rome Fiumicino Airport in 17h 55m. Fly via United Airlines, Alaska Airlines, or Delta to get the fastest option. The distance between Ontario and Rome Fiumicino Airport is about 6303 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $479, Delta will fly you from Ontario to Rome Fiumicino Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and United Airlines - these airlines can fly you to your destination from $487 and $508, respectively. Delta is priced at 35% lower than the current average price of a flight leaving 3 months from now.

  • 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.

See more FAQs

Traveling to a place near Rome Fiumicino Airport?

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

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Ontario to Leonardo da Vinci/Fiumicino

Discover the top 3 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 May 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$479Average$766FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$487Average$604FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$508Average$776FlexibilityNo cancel feeOn-time69%

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