How long is the flight from Ontario to Rome?

Departing from Ontario to Rome will take you 21h 55m. Ontario and Rome are separated by a distance of 6303 mi.

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

Our cheapest airline available from Ontario to Rome is United Airlines. Our recent data shows that you can find tickets from as low as $508 on this airline. An additional option worth looking into is Delta, starting at $723. United Airlines is 46% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in Rome 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 when rainfall is around 0.6 in.

If weather is an important factor for your trip to Rome, 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 is the cheapest time of day to fly from ONT to ROM?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Rome as you normally would.

Most accurate provider : When it comes to deals on Ontario-Rome flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Ontario-Rome flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Ontario-Rome flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Rome flights, Cheapflights users trust Ovago the most. Ovago 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 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?

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Rome. 2 airlines have flights from Ontario to Rome on a regular basis. Booking flights from Ontario to Rome should not be difficult; the airport handles an average of 0 outbound flights to Rome per day.

Can I find deals for flights from Ontario to Rome that include hotel bookings?

Yes. In addition to deals on Ontario to Rome flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Rome?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Rome.

Can I find deals for business class flights from Ontario to Rome?

Yes. Cheapflights offers flight deals from Ontario to Rome by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$342+ Cheap Flights from Ontario to Rome

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Cheap flight deals from Ontario to Rome

Cheapest

Best

Last-minute

One-way

Cheapest flights from Ontario to Rome
Explore the most affordable flight options available from Ontario to Rome. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.

Wed 11/111:29 pm -

1 stop13h 26m

Wed 11/251:15 pm -

2 stops35h 44m

Deal found 10/8

$746

Sun 10/257:07 am -

1 stop17h 08m

Tue 11/1010:25 am -

1 stop19h 29m

Deal found 10/8

$755

Tue 12/2911:52 pm -

1 stop22h 53m

Wed 1/137:05 am -

2 stops21h 56m

Deal found 10/9

$763

Tue 12/17:00 am -

1 stop15h 45m

Tue 12/87:05 am -

2 stops19h 31m

Deal found 10/8

$764

Wed 11/116:00 am -

1 stop19h 45m

Wed 11/251:10 pm -

1 stop18h 44m

Deal found 10/8

$766

Wed 11/115:00 am -

2 stops18h 55m

Tue 11/247:05 am -

2 stops22h 10m

Deal found 10/6

$767

Best flights from Ontario to Rome
Discover carefully curated flight deals from Ontario to Rome that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.

Wed 11/115:00 am -

1 stop21h 55m

Wed 11/251:15 pm -

2 stops35h 44m

Deal found 10/9

$746

Thu 11/127:05 am -

1 stop16h 10m

Wed 12/210:25 am -

1 stop19h 33m

Deal found 10/8

$861

Wed 10/2111:13 am -

1 stop17h 02m

Sat 10/243:15 pm -

1 stop28h 02m

Deal found 10/7

$1,033

Tue 12/17:00 am -

1 stop15h 45m

Fri 12/119:45 am -

1 stop17h 59m

Deal found 10/6

$766

Tue 3/26:00 am -

2 stops16h 45m

Fri 3/57:05 am -

2 stops19h 42m

Deal found 10/9

$770

Tue 11/37:00 am -

1 stop15h 45m

Tue 11/177:05 am -

2 stops19h 56m

Deal found 10/8

$811

Mon 12/147:05 am -

1 stop16h 10m

Sat 12/261:30 pm -

1 stop19h 11m

Deal found 10/9

$1,051

Tue 11/247:00 am -

1 stop15h 45m

Tue 12/19:55 am -

2 stops38h 40m

Deal found 10/9

$815

Thu 12/37:00 am -

1 stop15h 45m

Thu 12/109:45 am -

1 stop17h 59m

Deal found 10/6

$816

Fri 12/2511:10 am -

1 stop15h 10m

Thu 1/141:30 pm -

1 stop17h 44m

Deal found 10/8

$1,096

Thu 10/296:59 am -

1 stop16h 46m

Tue 11/109:45 am -

1 stop18h 02m

Deal found 10/9

$816

Thu 12/311:20 am -

2 stops16h 55m

Sun 12/209:45 am -

1 stop21h 46m

Deal found 10/9

$873

Last-minute flights from Ontario to Rome
Discover last-minute flight deals from Ontario to Rome. Data last updated October 10, 2026 and is based on user searches.

Sun 10/257:07 am -

1 stop17h 08m

Tue 11/1010:25 am -

1 stop19h 29m

Deal found 10/8

$755

Sun 10/251:32 pm -

1 stop14h 23m

Tue 11/107:05 am -

2 stops19h 56m

Deal found 10/7

$763

Sun 11/81:29 pm -

1 stop13h 26m

Tue 11/249:55 am -

2 stops19h 20m

Deal found 10/8

$764

Wed 11/111:29 pm -

1 stop13h 26m

Wed 11/251:15 pm -

2 stops35h 44m

Deal found 10/8

$746

Wed 11/116:00 am -

1 stop19h 45m

Wed 11/251:10 pm -

1 stop18h 44m

Deal found 10/8

$766

Wed 11/115:00 am -

2 stops18h 55m

Tue 11/247:05 am -

2 stops22h 10m

Deal found 10/6

$767

One-way flights from Ontario to Rome
Search for one-way flight options from Ontario to Rome. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.

Mon 1/254:19 pm -

2 stops20h 36m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/8

$342

Sun 1/176:37 pm -

2 stops28h 53m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/7

$346

Mon 1/256:37 pm -

3 stops53h 18m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/8

$350

Wed 3/1011:20 am -

2 stops26h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$353

Wed 2/1010:38 am -

2 stops18h 17m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$355

Mon 2/81:24 pm -

2 stops23h 31m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/5

$357

Sat 1/3011:20 am -

2 stops36h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/9

$361

Sat 3/206:53 pm -

2 stops39h 07m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$382

Fri 1/227:00 am -

2 stops29h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$394

Fri 1/296:37 pm -

2 stops28h 18m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/9

$396

Sun 4/46:00 am -

1 stop18h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$418

Find flight deals from Ontario to Rome

Most accurate provider	Ovago 3 stars
Most trusted provider	Ovago 3 stars
Round-trip from	$746 (United Airlines)
One-way from	$342 (FlightHub)
Popular in	June
Cheapest in	October
Average price	$595

Provider with most accurate pricing for Ontario-Rome (ROM) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Rome (ROM) flights.

Search Deals

From Ontario to Rome (ROM)

Search Deals

One-way flight from Ontario to Rome (ROM)

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($222 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($57 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Sun 1/17

5:00 am-8:30 am

2 stops18h 30m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$346

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Sun 2/7

7:00 am-11:20 am

1 stop19h 20m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$346

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Mon 1/25

12:00 pm-11:20 am

1 stop14h 20m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$346

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Mon 1/25

6:37 pm-8:55 am

3 stops53h 18m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$350

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Wed 3/10

11:20 am-11:10 pm

2 stops26h 50m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$353

Quickest round-trip

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Fri 1/29

12:00 pm-11:20 am

1 stop14h 20m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$396

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Sat 1/30

7:00 am-8:15 am

1 stop16h 15m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$396

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Thu 2/4

6:37 pm-7:55 am

2 stops28h 18m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$396

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Wed 1/6

2:00 pm-5:45 pm

2 stops42h 45m

Rome Fiumicino

Wed 12/31

12:00 am-3:00 pm

Nonstop0h 00m

$426

OntarioRome

ONT Ontario - FCO Rome Fiumicino

ONTFCO

Ontario

Wed 11/11

5:00 am-11:55 am

1 stop21h 55m

Rome Fiumicino

Wed 11/25

1:15 pm-3:59 pm

2 stops35h 44m

$746

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 21 resultsSorted by cheapest first

Compare providers for flights from Ontario to Rome

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Rome in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust 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 flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Ontario-Rome flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Ontario-Rome flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Rome flights, Cheapflights users trust Ovago the most. Ovago 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 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 Rome

Have a flexible travel schedule? Discover the best time to fly to Rome from Ontario with our price prediction graph.

ONT-ROM

ONT-FCO

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

ONT-ROM

ONT-FCO

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Rome

Get a feel of what it's like to fly with United Airlines from Ontario to Rome by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,331 reviews

Reviews

1 / 20

4.0

Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

United Airlines

7.4

Good

10,331 reviews

United Airlines

7.4

Good

10,331 reviews

Reviews

1 / 20

4.0

Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

What airport do you fly from for flights from Ontario to Rome?
Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Rome. 2 airlines have flights from Ontario to Rome on a regular basis. Booking flights from Ontario to Rome should not be difficult; the airport handles an average of 0 outbound flights to Rome per day.
How long is the flight from Ontario to Rome?
Departing from Ontario to Rome will take you 21h 55m. Ontario and Rome are separated by a distance of 6303 mi.
What are the cheapest airlines flying from Ontario to Rome round-trip?
Our cheapest airline available from Ontario to Rome is United Airlines. Our recent data shows that you can find tickets from as low as $508 on this airline. An additional option worth looking into is Delta, starting at $723. United Airlines is 46% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from Ontario to Rome that include hotel bookings?
Yes. In addition to deals on Ontario to Rome flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Rome?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Rome.
Can I find deals for business class flights from Ontario to Rome?
Yes. Cheapflights offers flight deals from Ontario to Rome 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

Fiumicino

Civitavecchia

Montepulciano

Santa Marinella

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Alternative routes for Ontario to Rome

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Top 2 airlines flying from Ontario to Rome

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$507	Average$826	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$723	Average$1,080	FlexibilityNo cancel fee	On-timeN/A

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$342+ Cheap flights from Ontario (ONT) to Rome (ROM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Rome 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 Rome

Cheapest flights from Ontario to RomeExplore the most affordable flight options available from Ontario to Rome. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.

Explore the most affordable flight options available from Ontario to Rome. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.

Best flights from Ontario to RomeDiscover carefully curated flight deals from Ontario to Rome that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.

Discover carefully curated flight deals from Ontario to Rome that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.

Last-minute flights from Ontario to RomeDiscover last-minute flight deals from Ontario to Rome. Data last updated October 10, 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to Rome. Data last updated October 10, 2026 and is based on user searches.

One-way flights from Ontario to RomeSearch for one-way flight options from Ontario to Rome. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.

Search for one-way flight options from Ontario to Rome. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.

Find flight deals from Ontario to Rome

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 that are best for you.

Compare providers for flights from Ontario to Rome

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 Rome in October.

Best time to book a flight from Ontario to Rome

Have a flexible travel schedule? Discover the best time to fly to Rome from Ontario with our price prediction graph.

Cheapflights Insights

Reviews of airlines servicing Rome

Get insights into the airlines that provide service to Rome. 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 Rome. Reviews last updated October 10, 2026.

Get a feel of what it's like to fly with United Airlines from Ontario to Rome by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Ontario to Rome?

How long is the flight from Ontario to Rome?

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

Can I find deals for flights from Ontario to Rome that include hotel bookings?

How can I find direct flights from Ontario to Rome?

Can I find deals for business class flights from Ontario to Rome?

Traveling to a place near Rome?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Rome

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Rome by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Ontario to Rome by cabin class

Find flights from Ontario to Rome, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ontario and Rome flights

Browse other Ontario and Rome flight options. Last updated on October 10, 2026.

Other flights from Ontario

Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on October 10, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Rome

Explore flights to Rome departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 10, 2026.

Top 2 airlines flying from Ontario to Rome

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Cheapest flights from Ontario to Rome
Explore the most affordable flight options available from Ontario to Rome. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.

Best flights from Ontario to Rome
Discover carefully curated flight deals from Ontario to Rome that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.

Last-minute flights from Ontario to Rome
Discover last-minute flight deals from Ontario to Rome. Data last updated October 10, 2026 and is based on user searches.

One-way flights from Ontario to Rome
Search for one-way flight options from Ontario to Rome. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.