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 22h 25m. Fly via United Airlines or KLM 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 46% lower than the current average price of a flight leaving 3 months from now.

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.

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).

What are the most popular airlines that fly from Ontario to Rome Fiumicino Airport?

Before booking your flight from Ontario to Rome Fiumicino Airport check out the most popular airlines for this route: United Airlines, Delta or KLM.

Most accurate provider : When it comes to deals on Ontario-Rome Fiumicino Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Rome Fiumicino Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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

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.

$226+ Flights from Ontario to Rome Fiumicino Airport

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

Airfare is below average for this route at the moment. Ontario to Rome Fiumicino Airport flights typically cost between $570 and $1,474 in February. The cheapest round-trip price found within the last 3 days was $495 on British Airways (Feb 26-Mar 7).

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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 December 17, 2025.

Wed 12/317:10 amONT - FCO

1 stop18h 35mBritish Airways

Sun 1/118:35 pmFCO - ONT

2 stops29h 47mBritish Airways

Deal found 12/15

$673

Wed 12/246:10 amONT - FCO

2 stops17h 50mMultiple Airlines

Sun 12/281:10 pmFCO - ONT

2 stops28h 38mMultiple Airlines

Deal found 12/15

$753

Wed 12/176:00 amONT - FCO

2 stops18h 00mMultiple Airlines

Wed 12/241:10 pmFCO - ONT

1 stop29h 28mMultiple Airlines

Deal found 12/16

$758

Tue 12/2312:45 pmONT - FCO

1 stop37h 00mBritish Airways

Sat 1/317:00 pmFCO - ONT

2 stops36h 13mBritish Airways

Deal found 12/15

$783

Tue 12/307:10 amONT - FCO

1 stop18h 35mIberia

Thu 1/88:20 pmFCO - ONT

2 stops35h 28mIberia

Deal found 12/16

$903

Fri 12/2610:50 amONT - FCO

1 stop14h 55mMultiple Airlines

Sun 12/281:10 pmFCO - ONT

1 stop19h 36mMultiple Airlines

Deal found 12/15

$919

Sat 12/2710:50 amONT - FCO

2 stops19h 40mIberia

Mon 1/128:20 pmFCO - ONT

2 stops22h 48mIberia

Deal found 12/16

$1,074

Thu 12/1810:50 amONT - FCO

1 stop14h 55mMultiple Airlines

Tue 12/231:10 pmFCO - ONT

1 stop18h 04mMultiple Airlines

Deal found 12/15

$1,104

Best flights from Ontario to Leonardo da Vinci/Fiumicino
Discover carefully curated flight deals from Ontario to Leonardo da Vinci/Fiumicino that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 17, 2025.

Sun 2/16:00 amONT - FCO

2 stops22h 25mUnited Airlines

Wed 3/41:15 pmFCO - ONT

2 stops42h 10mUnited Airlines

Deal found 12/15

$495

Wed 2/2510:20 pmONT - FCO

1 stop27h 10mKLM

Tue 3/36:10 amFCO - ONT

2 stops23h 55mKLM

Deal found 12/15

$513

Sat 1/176:00 amONT - FCO

2 stops20h 45mDelta

Sat 1/3112:40 pmFCO - ONT

1 stop31h 51mDelta

Deal found 12/16

$516

Mon 4/1311:01 amONT - FCO

1 stop16h 04mMultiple Airlines

Tue 4/281:25 pmFCO - ONT

1 stop19h 15mMultiple Airlines

Deal found 12/17

$567

Wed 2/251:45 pmONT - FCO

2 stops33h 45mUnited Airlines

Tue 3/31:05 pmFCO - ONT

2 stops56h 43mUnited Airlines

Deal found 12/15

$506

Wed 2/2510:20 pmONT - FCO

1 stop27h 10mDelta

Tue 3/312:40 pmFCO - ONT

1 stop32h 22mDelta

Deal found 12/15

$517

Wed 1/141:53 pmONT - FCO

2 stops24h 07mUnited Airlines

Sun 1/187:00 amFCO - ONT

2 stops37h 18mUnited Airlines

Deal found 12/14

$514

Tue 4/147:00 amONT - FCO

1 stop15h 55mUnited Airlines

Tue 4/286:50 amFCO - ONT

2 stops19h 57mUnited Airlines

Deal found 12/16

$565

Mon 4/135:10 amONT - FCO

1 stop22h 10mUnited Airlines

Wed 4/291:20 pmFCO - ONT

2 stops18h 46mUnited Airlines

Deal found 12/17

$565

Mon 4/137:00 amONT - FCO

1 stop15h 55mUnited Airlines

Tue 4/212:20 pmFCO - ONT

1 stop15h 26mUnited Airlines

Deal found 12/16

$567

Tue 4/147:00 amONT - FCO

1 stop15h 55mUnited Airlines

Wed 4/292:20 pmFCO - ONT

1 stop15h 26mUnited Airlines

Deal found 12/17

$567

Last-minute flights from Ontario to Leonardo da Vinci/Fiumicino
Discover last-minute flight deals from Ontario to Leonardo da Vinci/Fiumicino. Data last updated December 17, 2025 and is based on user searches.

Thu 1/110:42 amONT - FCO

2 stops16h 58mUnited Airlines

Fri 2/277:05 amFCO - ONT

2 stops19h 36mUnited Airlines

Deal found 12/16

$615

Wed 1/71:53 pmONT - FCO

2 stops24h 07mUnited Airlines

Wed 1/147:05 amFCO - ONT

2 stops24h 48mUnited Airlines

Deal found 12/16

$513

Wed 1/71:53 pmONT - FCO

2 stops24h 07mUnited Airlines

Tue 1/1310:30 amFCO - ONT

3 stops33h 48mUnited Airlines

Deal found 12/16

$519

Mon 1/124:45 pmONT - FCO

2 stops17h 50mBritish Airways

Mon 1/198:50 pmFCO - ONT

2 stops30h 55mBritish Airways

Deal found 12/15

$608

Tue 1/134:45 pmONT - FCO

2 stops20h 10mBritish Airways

Tue 1/207:25 amFCO - ONT

2 stops24h 23mBritish Airways

Deal found 12/14

$570

Wed 1/145:05 amONT - FCO

2 stops23h 20mUnited Airlines

Sun 1/187:00 amFCO - ONT

2 stops37h 18mUnited Airlines

Deal found 12/16

$514

Sat 1/171:24 pmONT - FCO

2 stops35h 01mAir Canada

Sat 1/3111:15 amFCO - ONT

2 stops34h 32mAir Canada

Deal found 12/16

$505

Sat 1/176:00 amONT - FCO

2 stops20h 45mDelta

Sat 1/3112:40 pmFCO - ONT

1 stop31h 51mDelta

Deal found 12/16

$516

Sat 1/177:16 amONT - FCO

2 stops21h 14mAmerican Airlines

Sat 1/318:35 amFCO - ONT

3 stops23h 13mAmerican Airlines

Deal found 12/16

$527

Thu 1/224:45 pmONT - FCO

2 stops21h 05mBritish Airways

Wed 1/288:30 pmFCO - ONT

2 stops34h 43mBritish Airways

Deal found 12/16

$508

Thu 1/226:00 amONT - FCO

2 stops17h 30mUnited Airlines

Wed 1/287:05 amFCO - ONT

2 stops19h 38mUnited Airlines

Deal found 12/16

$509

One-way flights from Ontario to Leonardo da Vinci/Fiumicino
Search for one-way flight options from Ontario to Leonardo da Vinci/Fiumicino. Find affordable one-way fares based on user searches. Data last updated December 17, 2025.

Mon 3/165:02 pmONT - FCO

2 stops20h 53mBritish Airways

Deal found 12/16

$226

Tue 3/177:00 amONT - FCO

1 stop19h 35mIberia

Deal found 12/16

$236

Tue 3/3110:56 amONT - FCO

1 stop16h 09mBritish Airways

Deal found 12/16

$310

Sun 3/295:02 pmONT - FCO

2 stops20h 43mBritish Airways

Deal found 12/17

$311

Sun 4/197:00 amONT - FCO

1 stop18h 50mDelta

Deal found 12/15

$321

Wed 3/257:00 amONT - FCO

1 stop19h 35mMultiple Airlines

Deal found 12/14

$326

Sat 5/911:59 pmONT - FCO

1 stop27h 06mBritish Airways

Deal found 12/17

$332

Sat 4/1810:59 pmONT - FCO

1 stop26h 51mDelta

Deal found 12/15

$333

Fri 4/177:00 amONT - FCO

1 stop15h 35mKLM

Deal found 12/15

$381

Thu 3/2610:56 amONT - FCO

1 stop15h 39mMultiple Airlines

Deal found 12/16

$386

Wed 12/2412:55 pmONT - FCO

2 stops24h 00mBritish Airways

Deal found 12/16

$387

Find flight deals from Ontario to Leonardo da Vinci/Fiumicino

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$495 (oojo)
One-way from	$226 (oojo)
Popular in	June
Cheapest in	October
Average price	$969

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. 20% potential increase in price ($232 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($61 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 2/1

6:00 am-1:25 pm

2 stops22h 25m

Rome Fiumicino

Wed 3/4

1:15 pm-10:25 pm

2 stops42h 10m

$495

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

1:45 pm-8:30 am

2 stops33h 45m

Rome Fiumicino

Tue 3/3

1:05 pm-12:48 pm

2 stops56h 43m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

10:20 pm-10:30 am

1 stop27h 10m

Rome Fiumicino

Tue 3/3

6:10 am-9:05 pm

2 stops23h 55m

$513

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 1/14

1:53 pm-11:00 pm

2 stops24h 07m

Rome Fiumicino

Sun 1/18

7:00 am-11:18 am

2 stops37h 18m

$514

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 1/17

6:00 am-11:45 am

2 stops20h 45m

Rome Fiumicino

Sat 1/31

12:40 pm-11:31 am

1 stop31h 51m

$516

OntarioRome

ONT - FCO

ONTFCO

Ontario

Wed 2/25

10:20 pm-10:30 am

1 stop27h 10m

Rome Fiumicino

Tue 3/3

12:40 pm-12:02 pm

1 stop32h 22m

$517

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 4/14

7:00 am-7:55 am

1 stop15h 55m

Rome Fiumicino

Tue 4/28

6:50 am-5:47 pm

2 stops19h 57m

$565

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 4/13

5:10 am-12:20 pm

1 stop22h 10m

Rome Fiumicino

Wed 4/29

1:20 pm-11:06 pm

2 stops18h 46m

$565

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 4/13

11:01 am-12:05 pm

1 stop16h 04m

Rome Fiumicino

Tue 4/28

1:25 pm-11:40 pm

1 stop19h 15m

$567

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 4/13

7:00 am-7:55 am

1 stop15h 55m

Rome Fiumicino

Tue 4/21

2:20 pm-8:46 pm

1 stop15h 26m

$567

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 23 results

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

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Ovago	Price Accuracy2 stars	Trust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Rome Fiumicino Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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

Currently, April is the cheapest month in which you can book a flight from Ontario to Rome Fiumicino Airport (average of $375). Flying from Ontario to Rome Fiumicino Airport in June is currently the most expensive (average of $598). 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?

Unlike in the morning, when flights are generally more expensive, you can save up to 26% on flights from Ontario to Rome Fiumicino Airport by exploring options for tickets in the afternoon.

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

Reviews of airlines servicing Leonardo da Vinci/Fiumicino

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

7.9

Good

8,008 reviews

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

8,008 reviews

Delta

7.9

Good

8,008 reviews

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

7.7

Good

1,430 reviews

Delta

7.9

Good

8,008 reviews

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

9,092 reviews

Delta

7.9

Good

8,008 reviews

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

7,583 reviews

Delta

7.9

Good

8,008 reviews

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

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. 4 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 22h 25m. Fly via United Airlines or KLM 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 46% 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.
What is the cheapest month to book a flight from Ontario to Rome Fiumicino Airport?
Currently, April is the cheapest month in which you can book a flight from Ontario to Rome Fiumicino Airport (average of $375). Flying from Ontario to Rome Fiumicino Airport in June is currently the most expensive (average of $598). 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

Fiumicino

Montepulciano

Santa Marinella

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Top 4 airlines flying from Ontario to Leonardo da Vinci/Fiumicino

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$479	Average$590	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$487	Average$604	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$508	Average$776	FlexibilityNo cancel fee	On-time69%
KLM	Cheapest$520	Average$704	FlexibilityNo cancel fee	On-time75%

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$226+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Leonardo da Vinci/Fiumicino with Cheapflights

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Cheap flight deals from Ontario to Leonardo da Vinci/Fiumicino

Cheapest flights from Ontario to Leonardo da Vinci/FiumicinoExplore 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 December 17, 2025.

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 December 17, 2025.

Find flight deals from Ontario to Leonardo da Vinci/Fiumicino

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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 December.

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.

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?

What is the cheapest time of day to fly from ONT to FCO?

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

Reviews of airlines servicing Leonardo da Vinci/Fiumicino

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.

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?

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

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

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

How can I 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?

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

Traveling to a place near Rome Fiumicino Airport?

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 4 airlines flying from Ontario to Leonardo da Vinci/Fiumicino

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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 December 17, 2025.