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

Currently priced at $605, 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 British Airways and Iberia - these airlines can fly you to your destination from $647 and $700, respectively. United Airlines is priced at 46% 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 ($396), Delta ($418), and United Airlines ($439).

What is the cheapest day to fly from Ontario to Rome Fiumicino Airport?

Travelers seeking maximum savings on their Ontario to Rome Fiumicino Airport flight should consider departing on Friday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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: American Airlines, British Airways or Delta.

What is the cheapest day to fly round-trip from Ontario to Rome Fiumicino Airport?

Wednesday flights are generally found to be more expensive for flights from Ontario to Rome Fiumicino Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Rome Fiumicino Airport.

How far in advance should I book a flight from Ontario to Rome Fiumicino Airport?

Users have found that booking a flight from Ontario to Rome Fiumicino Airport at least 20 days early can save you up to 15% on average compared to booking a flight this week. If booking 20 days before your flight isn’t an option for you, users have found flights from Ontario to Rome Fiumicino Airport for as little as $809 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $913 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to Rome Fiumicino Airport?

February is one of the best times of the year to fly to Rome Fiumicino Airport from Ontario. Prices for February average $835 per person but you can even find prices for as low as $495. The most expensive prices can be found in the month of June. Opting for a February flight can save you 36% on your journey compared to booking in June

Most accurate provider : When it comes to deals on Ontario-Rome Fiumicino Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Rome Fiumicino Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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. 5 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.

$396+ Flights from Ontario to Rome Fiumicino Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Leonardo da Vinci/Fiumicino

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$605 (United Airlines)
One-way from	$396 (Cheapflightsfares)
Popular in	December
Cheapest in	February
Average price	$1,288

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

High demand for flights, 2% potential price rise

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($47 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 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 April 29, 2025.

Tue 10/286:02 amONT - FCO

2 stops20h 53mUnited Airlines

Tue 11/119:45 amFCO - ONT

1 stop21h 41mUnited Airlines

Deal found 4/28

$549

Fri 11/711:59 pmONT - FCO

2 stops27h 11mMultiple Airlines

Sat 11/158:20 pmFCO - ONT

2 stops26h 22mMultiple Airlines

Deal found 4/28

$642

Tue 9/1611:59 pmONT - FCO

2 stops38h 06mBritish Airways

Tue 9/3010:00 amFCO - ONT

1 stop22h 36mBritish Airways

Deal found 4/28

$647

Sun 5/410:15 pmONT - FCO

1 stop24h 20mDelta

Tue 5/209:45 amFCO - ONT

1 stop21h 44mDelta

Deal found 4/28

$655

Mon 10/208:44 amONT - FCO

1 stop14h 21mIberia

Mon 10/278:20 pmFCO - ONT

2 stops21h 16mIberia

Deal found 4/27

$700

Mon 5/510:15 pmONT - FCO

1 stop27h 50mKLM

Tue 5/2011:35 amFCO - ONT

1 stop19h 54mKLM

Deal found 4/28

$706

Mon 5/124:35 pmONT - FCO

2 stops18h 30mAmerican Airlines

Mon 5/1912:10 pmFCO - ONT

2 stops20h 33mAmerican Airlines

Deal found 4/28

$732

Sat 5/246:34 pmONT - FCO

2 stops32h 11mAir Canada

Tue 6/311:30 amFCO - ONT

2 stops38h 55mAir Canada

Deal found 4/28

$1,178

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 April 29, 2025.

Mon 10/139:35 amONT - FCO

1 stop18h 45mUnited Airlines

Wed 10/223:40 pmFCO - ONT

1 stop16h 12mUnited Airlines

Deal found 4/28

$605

Tue 9/1611:59 pmONT - FCO

2 stops38h 06mBritish Airways

Tue 9/3010:00 amFCO - ONT

1 stop22h 36mBritish Airways

Deal found 4/28

$647

Mon 10/208:44 amONT - FCO

1 stop14h 21mIberia

Mon 10/278:20 pmFCO - ONT

2 stops21h 16mIberia

Deal found 4/27

$700

Fri 5/97:05 amONT - FCO

1 stop15h 30mDelta

Thu 5/1511:35 amFCO - ONT

1 stop19h 54mDelta

Deal found 4/28

$724

Mon 5/124:35 pmONT - FCO

2 stops18h 30mAmerican Airlines

Mon 5/1912:10 pmFCO - ONT

2 stops20h 33mAmerican Airlines

Deal found 4/28

$732

Tue 8/197:00 amONT - FCO

2 stops17h 15mMultiple Airlines

Wed 8/2711:30 amFCO - ONT

2 stops18h 03mMultiple Airlines

Deal found 4/28

$739

Mon 8/117:00 amONT - FCO

1 stop15h 35mKLM

Wed 8/209:45 amFCO - ONT

1 stop18h 44mKLM

Deal found 4/28

$864

Sat 5/246:34 pmONT - FCO

2 stops32h 11mAir Canada

Tue 6/311:30 amFCO - ONT

2 stops38h 55mAir Canada

Deal found 4/28

$1,178

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 April 29, 2025 and is based on user searches.

Mon 4/282:44 pmONT - FCO

1 stop32h 21mIberia

Mon 5/510:00 amFCO - ONT

1 stop22h 43mIberia

Deal found 4/27

$935

Tue 4/297:00 amONT - FCO

1 stop16h 05mBritish Airways

Tue 5/610:00 amFCO - ONT

1 stop17h 36mBritish Airways

Deal found 4/28

$650

Sun 5/410:15 pmONT - FCO

1 stop24h 20mDelta

Tue 5/209:45 amFCO - ONT

1 stop21h 44mDelta

Deal found 4/28

$655

Sun 5/47:00 amONT - FCO

1 stop16h 05mIberia

Fri 5/1610:00 amFCO - ONT

1 stop20h 58mIberia

Deal found 4/28

$1,158

Mon 5/510:15 pmONT - FCO

1 stop27h 50mKLM

Tue 5/2011:35 amFCO - ONT

1 stop19h 54mKLM

Deal found 4/28

$706

Wed 5/71:20 pmONT - FCO

1 stop14h 00mUnited Airlines

Wed 5/142:20 pmFCO - ONT

1 stop15h 33mUnited Airlines

Deal found 4/27

$664

Wed 5/71:20 pmONT - FCO

1 stop14h 00mUnited Airlines

Tue 5/132:20 pmFCO - ONT

1 stop15h 33mUnited Airlines

Deal found 4/27

$664

Thu 5/87:30 amONT - FCO

1 stop15h 35mBritish Airways

Thu 5/2210:00 amFCO - ONT

1 stop17h 36mBritish Airways

Deal found 4/28

$713

Mon 5/124:35 pmONT - FCO

2 stops18h 30mAmerican Airlines

Mon 5/1912:10 pmFCO - ONT

2 stops20h 33mAmerican Airlines

Deal found 4/28

$732

Mon 5/1211:46 amONT - FCO

2 stops26h 44mMultiple Airlines

Mon 5/197:55 pmFCO - ONT

2 stops34h 16mMultiple Airlines

Deal found 4/28

$998

Sat 5/246:34 pmONT - FCO

2 stops32h 11mAir Canada

Tue 6/311:30 amFCO - ONT

2 stops38h 55mAir Canada

Deal found 4/28

$1,178

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 April 29, 2025.

Sun 10/198:44 amONT - FCO

1 stop14h 21mBritish Airways

Deal found 4/28

$396

Sun 10/1210:59 pmONT - FCO

1 stop23h 36mDelta

Deal found 4/28

$418

Mon 6/27:36 pmONT - FCO

3 stops57h 49mMultiple Airlines

Deal found 4/28

$438

Sun 10/266:02 amONT - FCO

2 stops20h 53mUnited Airlines

Deal found 4/27

$439

Sat 6/2111:59 pmONT - FCO

2 stops33h 21mTurkish Airlines

Deal found 4/28

$520

Tue 5/137:05 amONT - FCO

1 stop15h 30mKLM

Deal found 4/28

$529

Wed 10/85:10 amONT - FCO

2 stops21h 35mAir Canada

Deal found 4/28

$540

Sat 6/1410:28 pmONT - FCO

1 stop26h 22mAmerican Airlines

Deal found 4/28

$891

Thu 6/1212:49 pmONT - FCO

2 stops26h 26mIberia

Deal found 4/28

$965

Sun 6/296:25 amONT - FCO

2 stops45h 15mWestJet

Deal found 4/27

$2,037

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

Mon 10/13

9:35 am-1:20 pm

1 stop18h 45m

Rome Fiumicino

Wed 10/22

3:40 pm-10:52 pm

1 stop16h 12m

$605

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 9/16

11:59 pm-11:05 pm

2 stops38h 06m

Rome Fiumicino

Tue 9/30

10:00 am-11:36 pm

1 stop22h 36m

$647

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 10/20

8:44 am-8:05 am

1 stop14h 21m

Rome Fiumicino

Mon 10/27

8:20 pm-9:36 am

2 stops21h 16m

$700

OntarioRome

ONT - FCO

ONTFCO

Ontario

Fri 5/9

7:05 am-7:35 am

1 stop15h 30m

Rome Fiumicino

Thu 5/15

11:35 am-10:29 pm

1 stop19h 54m

$724

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 5/12

4:35 pm-8:05 pm

2 stops18h 30m

Rome Fiumicino

Mon 5/19

12:10 pm-11:43 pm

2 stops20h 33m

$732

OntarioRome

ONT - FCO

ONTFCO

Ontario

Tue 8/19

7:00 am-9:15 am

2 stops17h 15m

Rome Fiumicino

Wed 8/27

11:30 am-8:33 pm

2 stops18h 03m

$739

OntarioRome

ONT - FCO

ONTFCO

Ontario

Mon 8/11

7:00 am-7:35 am

1 stop15h 35m

Rome Fiumicino

Wed 8/20

9:45 am-7:29 pm

1 stop18h 44m

$864

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sat 5/24

6:34 pm-11:45 am

2 stops32h 11m

Rome Fiumicino

Tue 6/3

11:30 am-5:25 pm

2 stops38h 55m

$1,178

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 10/19

8:44 am-8:05 am

1 stop14h 21m

$396

OntarioRome

ONT - FCO

ONTFCO

Ontario

Sun 10/12

10:59 pm-7:35 am

1 stop23h 36m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 18 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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Rome Fiumicino Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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, 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 $1,178). 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 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

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

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

Peruse reviews from past customers who have flown with Delta, KLM and United 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

7,929 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

8.0

Very good

7,929 reviews

Delta

8.0

Very good

7,929 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

7.8

Good

1,333 reviews

Delta

8.0

Very good

7,929 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

8,696 reviews

Delta

8.0

Very good

7,929 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.

Turkish Airlines

7.3

Good

3,785 reviews

Delta

8.0

Very good

7,929 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.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,929 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. 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 $605, 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 British Airways and Iberia - these airlines can fly you to your destination from $647 and $700, respectively. United Airlines is priced at 46% 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 ($396), Delta ($418), and United Airlines ($439).
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 $1,178). 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

Ciampino

Montepulciano

Ponza

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ontario to Leonardo da Vinci/Fiumicino

Los Angeles to Leonardo da Vinci/Fiumicino flights

San Francisco to Leonardo da Vinci/Fiumicino flights

Burbank to Leonardo da Vinci/Fiumicino flights

Santa Ana to Leonardo da Vinci/Fiumicino flights

San Jose to Leonardo da Vinci/Fiumicino flights

San Diego to Leonardo da Vinci/Fiumicino flights

Oakland to Leonardo da Vinci/Fiumicino flights

Sacramento to Leonardo da Vinci/Fiumicino flights

Las Vegas to Leonardo da Vinci/Fiumicino flights

Long Beach to Leonardo da Vinci/Fiumicino flights

Los Angeles to Ciampino flights

Palm Springs to Leonardo da Vinci/Fiumicino flights

Fresno to Leonardo da Vinci/Fiumicino flights

Reno to Leonardo da Vinci/Fiumicino flights

San Francisco to Ciampino flights

San Luis Obispo to Leonardo da Vinci/Fiumicino flights

Medford to Leonardo da Vinci/Fiumicino flights

Santa Rosa to Leonardo da Vinci/Fiumicino flights

Monterey to Leonardo da Vinci/Fiumicino flights

Las Vegas to Ciampino flights

Arcata to Leonardo da Vinci/Fiumicino flights

Redding to Leonardo da Vinci/Fiumicino flights

Santa Barbara to Leonardo da Vinci/Fiumicino flights

Oakland to Ciampino flights

Other flights to Leonardo da Vinci/Fiumicino

Los Angeles to Leonardo da Vinci/Fiumicino flights

John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights

Boston to Leonardo da Vinci/Fiumicino flights

Miami to Leonardo da Vinci/Fiumicino flights

O'Hare Intl to Leonardo da Vinci/Fiumicino flights

Newark to Leonardo da Vinci/Fiumicino flights

Rome Fiumicino Airport to Bari flights

Rome Fiumicino Airport to Tirana flights

Rome Fiumicino Airport to Nice flights

Rome Fiumicino Airport to Catania flights

Rome Fiumicino Airport to Split flights

Rome Fiumicino Airport to Copenhagen flights

Rome Fiumicino Airport to Tirana flights

Rome Fiumicino Airport to Marseille flights

Rome Fiumicino Airport to Dubrovnik flights

Rome Fiumicino Airport to Palma de Mallorca flights

Rome Fiumicino Airport to Palermo flights

Rome Fiumicino Airport to Ibiza flights

Rome Fiumicino Airport to Budapest flights

Rome Fiumicino Airport to London Gatwick Airport flights

Rome Fiumicino Airport to Málaga flights

Rome Fiumicino Airport to Barcelona-El Prat Airport flights

Rome Fiumicino Airport to Málaga flights

Rome Fiumicino Airport to London Gatwick Airport flights

Top 5 airlines flying from Ontario to Leonardo da Vinci/Fiumicino

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$541	Average$1,126	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$556	Average$1,105	FlexibilityNo cancel fee	On-time69%
KLM	Cheapest$591	Average$1,064	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$859	Average$1,288	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$924	Average$1,118	FlexibilityNo cancel fee	On-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$396+ 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 10/19. 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

2. Select your favorite providers

3. Compare prices and book

Cheap 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

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 April 29, 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 April 29, 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 April.

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?

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 April 29, 2025.

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.

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.

Reviews of airlines servicing Leonardo da Vinci/Fiumicino

Peruse reviews from past customers who have flown with Delta, KLM and United 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.

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?

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?

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 Ontario?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 5 airlines flying from Ontario to Leonardo da Vinci/Fiumicino

100% Free

Book with Flexibility

Travel Smart

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 April 29, 2025.