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 20h 50m. Fly via Delta or United Airlines 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 KLM - these airlines can fly you to your destination from $514 and $520, respectively. Delta is priced at 47% 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 British Airways ($374), Iberia ($377), and Delta ($386).

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 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.

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.

$373+ 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 $627 and $1,193 in December. The cheapest round-trip price found within the last 3 days was $466 on Delta (Dec 8-Dec 24).

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

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheap flight deals from Ontario to Leonardo da Vinci/Fiumicino

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$466 (Delta)
One-way from	$373 (Mytrip)
Popular in	June
Cheapest in	December
Average price	$868

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. 22% potential increase in price ($263 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 October 2025

Search Deals

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 octubre 16, 2025.

lun. 12/87:05 amONT - FCO

1 stop18h 25mDelta

mié. 12/2410:05 amFCO - ONT

1 stop18h 45mDelta

Deal found 10/15

$466

dom. 12/77:05 amONT - FCO

1 stop15h 50mKLM

mar. 12/2310:05 amFCO - ONT

1 stop18h 45mKLM

Deal found 10/16

$474

mar. 11/1110:25 pmONT - FCO

1 stop24h 30mDelta

jue. 11/2011:05 amFCO - ONT

2 stops21h 47mDelta

Deal found 10/15

$480

dom. 11/2310:25 pmONT - FCO

1 stop27h 05mDelta

jue. 12/412:40 pmFCO - ONT

1 stop19h 24mDelta

Deal found 10/16

$481

mar. 11/1110:25 pmONT - FCO

1 stop24h 30mDelta

vie. 11/219:20 amFCO - ONT

2 stops58h 46mDelta

Deal found 10/16

$491

lun. 11/177:05 amONT - FCO

1 stop15h 50mKLM

mar. 11/256:10 amFCO - ONT

2 stops19h 59mKLM

Deal found 10/14

$492

lun. 11/175:05 amONT - FCO

2 stops20h 50mUnited Airlines

mar. 11/251:05 pmFCO - ONT

2 stops42h 26mUnited Airlines

Deal found 10/14

$494

mié. 10/2211:36 amONT - FCO

1 stop14h 29mKLM

mié. 11/510:05 amFCO - ONT

1 stop18h 14mKLM

Deal found 10/15

$497

mié. 11/127:00 amONT - FCO

1 stop15h 45mUnited Airlines

vie. 11/217:05 amFCO - ONT

2 stops24h 26mUnited Airlines

Deal found 10/15

$502

dom. 11/97:00 amONT - FCO

1 stop15h 45mUnited Airlines

mar. 11/187:00 amFCO - ONT

2 stops19h 34mUnited Airlines

Deal found 10/15

$504

mié. 11/1210:47 amONT - FCO

1 stop14h 58mMultiple Airlines

vie. 11/2111:00 amFCO - ONT

1 stop20h 23mMultiple Airlines

Deal found 10/15

$506

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 octubre 16, 2025.

lun. 11/175:05 amONT - FCO

2 stops20h 50mUnited Airlines

mar. 11/251:05 pmFCO - ONT

2 stops42h 26mUnited Airlines

Deal found 10/14

$494

dom. 12/710:47 amONT - FCO

1 stop14h 58mMultiple Airlines

mar. 12/231:10 pmFCO - ONT

1 stop18h 04mMultiple Airlines

Deal found 10/15

$497

mié. 11/1211:44 amONT - FCO

2 stops23h 01mDelta

jue. 11/2011:05 amFCO - ONT

2 stops21h 47mDelta

Deal found 10/15

$498

mié. 11/127:00 amONT - FCO

1 stop15h 45mUnited Airlines

vie. 11/217:05 amFCO - ONT

2 stops24h 26mUnited Airlines

Deal found 10/15

$502

dom. 3/811:29 amONT - FCO

2 stops37h 41mDelta

vie. 3/206:00 amFCO - ONT

2 stops24h 38mDelta

Deal found 10/16

$522

mar. 1/205:05 amONT - FCO

2 stops19h 20mUnited Airlines

mié. 2/49:45 amFCO - ONT

2 stops22h 08mUnited Airlines

Deal found 10/16

$502

mar. 11/111:33 pmONT - FCO

2 stops34h 22mUnited Airlines

vie. 11/219:45 amFCO - ONT

1 stop21h 46mUnited Airlines

Deal found 10/15

$506

mar. 1/135:05 amONT - FCO

2 stops19h 20mUnited Airlines

lun. 1/261:30 pmFCO - ONT

2 stops18h 23mUnited Airlines

Deal found 10/15

$527

jue. 11/135:05 amONT - FCO

2 stops17h 40mUnited Airlines

vie. 11/217:05 amFCO - ONT

2 stops24h 26mUnited Airlines

Deal found 10/15

$532

jue. 11/137:00 amONT - FCO

2 stops18h 55mUnited Airlines

mar. 11/257:05 amFCO - ONT

3 stops24h 46mUnited Airlines

Deal found 10/16

$532

mar. 3/315:00 amONT - FCO

1 stop22h 20mUnited Airlines

mar. 4/711:30 amFCO - ONT

2 stops43h 56mUnited Airlines

Deal found 10/15

$543

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 octubre 16, 2025 and is based on user searches.

mié. 10/2211:36 amONT - FCO

1 stop14h 29mKLM

mié. 11/510:05 amFCO - ONT

1 stop18h 14mKLM

Deal found 10/15

$497

mar. 10/287:00 amONT - FCO

2 stops17h 30mUnited Airlines

jue. 11/67:00 amFCO - ONT

2 stops24h 51mUnited Airlines

Deal found 10/15

$509

dom. 11/97:00 amONT - FCO

1 stop15h 45mUnited Airlines

mar. 11/187:00 amFCO - ONT

2 stops19h 34mUnited Airlines

Deal found 10/15

$504

mar. 11/1110:25 pmONT - FCO

1 stop24h 30mDelta

jue. 11/2011:05 amFCO - ONT

2 stops21h 47mDelta

Deal found 10/15

$480

mar. 11/1110:25 pmONT - FCO

1 stop24h 30mDelta

vie. 11/219:20 amFCO - ONT

2 stops58h 46mDelta

Deal found 10/16

$491

mar. 11/116:38 pmONT - FCO

2 stops28h 07mUnited Airlines

vie. 11/217:05 amFCO - ONT

2 stops24h 26mUnited Airlines

Deal found 10/16

$507

mié. 11/127:00 amONT - FCO

1 stop15h 45mUnited Airlines

vie. 11/217:05 amFCO - ONT

2 stops24h 26mUnited Airlines

Deal found 10/15

$502

mié. 11/1210:47 amONT - FCO

1 stop14h 58mMultiple Airlines

vie. 11/2111:00 amFCO - ONT

1 stop20h 23mMultiple Airlines

Deal found 10/15

$506

lun. 11/177:05 amONT - FCO

1 stop15h 50mKLM

mar. 11/256:10 amFCO - ONT

2 stops19h 59mKLM

Deal found 10/14

$492

lun. 11/175:05 amONT - FCO

2 stops20h 50mUnited Airlines

mar. 11/251:05 pmFCO - ONT

2 stops42h 26mUnited Airlines

Deal found 10/14

$494

dom. 11/2310:25 pmONT - FCO

1 stop27h 05mDelta

jue. 12/412:40 pmFCO - ONT

1 stop19h 24mDelta

Deal found 10/16

$481

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 octubre 16, 2025.

lun. 10/208:15 amONT - FCO

1 stop14h 50mBritish Airways

Deal found 10/16

$373

mar. 11/183:08 pmONT - FCO

2 stops21h 47mBritish Airways

Deal found 10/16

$374

dom. 10/198:15 amONT - FCO

1 stop14h 50mIberia

Deal found 10/15

$377

mié. 10/228:15 amONT - FCO

1 stop14h 50mIberia

Deal found 10/16

$378

dom. 11/306:10 amONT - FCO

1 stop19h 35mIberia

Deal found 10/16

$379

mié. 11/126:10 amONT - FCO

1 stop19h 35mBritish Airways

Deal found 10/15

$385

lun. 12/87:05 amONT - FCO

1 stop15h 50mDelta

Deal found 10/16

$386

lun. 11/177:05 amONT - FCO

1 stop15h 50mKLM

Deal found 10/15

$388

dom. 10/264:49 pmONT - FCO

2 stops19h 06mBritish Airways

Deal found 10/16

$390

dom. 11/162:53 pmONT - FCO

2 stops17h 57mBritish Airways

Deal found 10/16

$391

mar. 1/135:05 amONT - FCO

2 stops19h 20mAir Canada

Deal found 10/15

$394

sáb. 11/2211:59 pmONT - FCO

1 stop25h 46mMultiple Airlines

Deal found 10/16

$395

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

lun. 11/17

5:05 am-10:55 am

2 stops20h 50m

Rome Fiumicino

mar. 11/25

1:05 pm-10:31 pm

2 stops42h 26m

$494

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 12/7

10:47 am-10:45 am

1 stop14h 58m

Rome Fiumicino

mar. 12/23

1:10 pm-10:14 pm

1 stop18h 04m

$497

OntarioRome

ONT - FCO

ONTFCO

Ontario

mié. 11/12

11:44 am-7:45 pm

2 stops23h 01m

Rome Fiumicino

jue. 11/20

11:05 am-11:52 pm

2 stops21h 47m

$498

OntarioRome

ONT - FCO

ONTFCO

Ontario

mié. 11/12

7:00 am-7:45 am

1 stop15h 45m

Rome Fiumicino

vie. 11/21

7:05 am-10:31 pm

2 stops24h 26m

$502

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 1/20

5:05 am-9:25 am

2 stops19h 20m

Rome Fiumicino

mié. 2/4

9:45 am-10:53 pm

2 stops22h 08m

$502

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 11/11

1:33 pm-8:55 am

2 stops34h 22m

Rome Fiumicino

vie. 11/21

9:45 am-10:31 pm

1 stop21h 46m

$506

OntarioRome

ONT - FCO

ONTFCO

Ontario

dom. 3/8

11:29 am-9:10 am

2 stops37h 41m

Rome Fiumicino

vie. 3/20

6:00 am-10:38 pm

2 stops24h 38m

$522

OntarioRome

ONT - FCO

ONTFCO

Ontario

mar. 1/13

5:05 am-9:25 am

2 stops19h 20m

Rome Fiumicino

lun. 1/26

1:30 pm-10:53 pm

2 stops18h 23m

$527

OntarioRome

ONT - FCO

ONTFCO

Ontario

jue. 11/13

5:05 am-7:45 am

2 stops17h 40m

Rome Fiumicino

vie. 11/21

7:05 am-10:31 pm

2 stops24h 26m

$532

OntarioRome

ONT - FCO

ONTFCO

Ontario

jue. 11/13

7:00 am-10:55 am

2 stops18h 55m

Rome Fiumicino

mar. 11/25

7:05 am-10:51 pm

3 stops24h 46m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 22 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 October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 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 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

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 $374). 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

7,978 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

7,978 reviews

Delta

7.9

Good

7,978 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

1,404 reviews

Delta

7.9

Good

7,978 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

8,982 reviews

Delta

7.9

Good

7,978 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

7,457 reviews

Delta

7.9

Good

7,978 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 20h 50m. Fly via Delta or United Airlines 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 KLM - these airlines can fly you to your destination from $514 and $520, respectively. Delta is priced at 47% 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 British Airways ($374), Iberia ($377), and Delta ($386).
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 $374). 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

Gaeta

Montepulciano

Santa Marinella

Browse thousands of different options on Cheapflights for your next trip

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$514	Average$613	FlexibilityNo cancel fee	On-time70%
KLM	Cheapest$520	Average$704	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$570	Average$791	FlexibilityNo cancel fee	On-time69%

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$373+ 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 10/20. 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

1. Tell us where you want to go

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Cheap flight deals from Ontario to Leonardo da Vinci/Fiumicino

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Round-trip from

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Find 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 octubre 16, 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 octubre 16, 2025.

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 October.

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?

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

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?

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Alternative routes for 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 octubre 16, 2025.