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Cheap flights from Rome to Los Angeles from $501

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rome to Los Angeles departing on 8/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
1:10 pm - 9:08 pm
FCO
-
ONT
16h 58m
1 stop
British Airways Logo
6:00 am - 12:05 pm
ONT
-
FCO
21h 05m
1 stop
$552British Airways
dom., ago. 23 - dom., sep. 6
American Airlines Logo
12:15 pm - 9:59 pm
FCO
-
ONT
18h 44m
2 stops
American Airlines Logo
12:19 pm - 8:05 pm
ONT
-
FCO
22h 46m
2 stops
$553American Airlines
jue., abr. 23 - lun., abr. 27
American Airlines Logo
12:15 pm - 1:18 pm
FCO
-
ONT
34h 03m
2 stops
American Airlines Logo
2:08 pm - 5:25 pm
ONT
-
FCO
18h 17m
2 stops
$554American Airlines
jue., abr. 23 - lun., abr. 27
British Airways Logo
1:10 pm - 10:06 am
FCO
-
ONT
29h 56m
1 stop
British Airways Logo
11:58 pm - 12:05 pm
ONT
-
FCO
27h 07m
1 stop
$556British Airways
lun., mar. 30 - lun., abr. 6
American Airlines Logo
1:10 pm - 11:46 pm
FCO
-
ONT
19h 36m
1 stop
American Airlines Logo
10:59 am - 12:05 pm
ONT
-
FCO
16h 06m
1 stop
$563American Airlines
jue., abr. 23 - lun., abr. 27
American Airlines Logo
1:10 pm - 11:46 pm
FCO
-
ONT
19h 36m
1 stop
American Airlines Logo
6:00 am - 12:05 pm
ONT
-
FCO
21h 05m
1 stop
$564American Airlines
jue., abr. 23 - lun., abr. 27
American Airlines Logo
1:10 pm - 11:46 pm
FCO
-
ONT
19h 36m
1 stop
American Airlines Logo
7:30 am - 12:05 pm
ONT
-
FCO
19h 35m
1 stop
$565American Airlines
jue., abr. 23 - lun., abr. 27
United Airlines Logo
6:50 am - 6:11 pm
FCO
-
ONT
20h 21m
2 stops
United Airlines Logo
1:18 pm - 12:20 pm
ONT
-
FCO
14h 02m
1 stop
$571United Airlines
mar., ago. 18 - lun., sep. 7
United Airlines Logo
10:00 am - 10:59 pm
FCO
-
ONT
21h 59m
2 stops
United Airlines Logo
5:00 am - 12:20 pm
ONT
-
FCO
22h 20m
1 stop
$572United Airlines
mar., may. 19 - dom., jun. 7
United Airlines Logo
10:50 am - 10:45 pm
FCO
-
ONT
20h 55m
2 stops
United Airlines Logo
5:10 am - 7:55 am
ONT
-
FCO
17h 45m
2 stops
$584United Airlines
vie., abr. 3 - mar., abr. 7

British Airways flights from Rome to Ontario

Our best British Airways deals on Rome to Ontario flight tickets
British Airways
Aug 23
FCO1:10 pmRome Fiumicino
16h 58m
1 stop
ONT9:08 pmOntario
Sep 6
ONT6:00 amOntario
21h 05m
1 stop
FCO12:05 pmRome Fiumicino
$552
British Airways
Apr 3
FCO1:10 pmRome Fiumicino
29h 56m
1 stop
ONT10:06 amOntario
Apr 7
ONT10:59 amOntario
16h 06m
1 stop
FCO12:05 pmRome Fiumicino
$554
British Airways
Mar 30
FCO1:10 pmRome Fiumicino
29h 56m
1 stop
ONT10:06 amOntario
Apr 6
ONT11:58 pmOntario
27h 07m
1 stop
FCO12:05 pmRome Fiumicino
$556

Iberia flights from Rome to Ontario

Our best Iberia deals on Rome to Ontario flight tickets
Iberia
Apr 2
FCO1:10 pmRome Fiumicino
19h 49m
1 stop
ONT11:59 pmOntario
Apr 4
ONT2:39 pmOntario
36h 26m
1 stop
FCO12:05 pmRome Fiumicino
$592
Iberia
Apr 2
FCO1:10 pmRome Fiumicino
19h 49m
1 stop
ONT11:59 pmOntario
Apr 11
ONT2:08 pmOntario
36h 57m
1 stop
FCO12:05 pmRome Fiumicino
$594
Iberia
Apr 2
FCO1:10 pmRome Fiumicino
19h 49m
1 stop
ONT11:59 pmOntario
Apr 11
ONT2:08 pmOntario
36h 57m
1 stop
FCO12:05 pmRome Fiumicino
$595

momondo Fare Finder

 
Customize your flight search to find flights from Rome to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated marzo 20, 2026.
Use the filters below to find and compare flights from Rome to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

dom. 8/23

1:10 pm-9:08 pm

1 stop16h 58m

Ontario

dom. 9/6

6:00 am-12:05 pm

1 stop21h 05m

$552

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

jue. 4/23

12:15 pm-9:59 pm

2 stops18h 44m

Ontario

lun. 4/27

12:19 pm-8:05 pm

2 stops22h 46m

$553

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

jue. 4/23

12:15 pm-1:18 pm

2 stops34h 03m

Ontario

lun. 4/27

2:08 pm-5:25 pm

2 stops18h 17m

$554

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

lun. 3/30

1:10 pm-10:06 am

1 stop29h 56m

Ontario

lun. 4/6

11:58 pm-12:05 pm

1 stop27h 07m

$556

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

jue. 4/23

1:10 pm-11:46 pm

1 stop19h 36m

Ontario

lun. 4/27

10:59 am-12:05 pm

1 stop16h 06m

$563

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

jue. 4/23

1:10 pm-11:46 pm

1 stop19h 36m

Ontario

lun. 4/27

6:00 am-12:05 pm

1 stop21h 05m

$564

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

jue. 4/23

1:10 pm-11:46 pm

1 stop19h 36m

Ontario

lun. 4/27

7:30 am-12:05 pm

1 stop19h 35m

$565
Quickest round-trip

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

mar. 8/18

6:50 am-6:11 pm

2 stops20h 21m

Ontario

lun. 9/7

1:18 pm-12:20 pm

1 stop14h 02m

$571

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

mar. 5/19

10:00 am-10:59 pm

2 stops21h 59m

Ontario

dom. 6/7

5:00 am-12:20 pm

1 stop22h 20m

$572

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

vie. 4/3

10:50 am-10:45 pm

2 stops20h 55m

Ontario

mar. 4/7

5:10 am-7:55 am

2 stops17h 45m

$584

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

How to get the cheapest flight ticket from Rome to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Rome to Ontario flights?

You could potentially save up to 6% on your flight if you consider stops on a Rome to Ontario flight.

When to book flights from Rome to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Rome to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Rome to Ontario (ROM to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rome to Ontario

Fastest flight time

15h 16m

Direct flights

None
The fastest flight from Rome to Ontario takes 15h 16m
There are no direct flights from Rome to Ontario. There are no popular flight routes from Rome to Ontario.
Search flight deals

  • How far is Rome to Ontario by plane?

    A flight from Rome to Ontario will travel around 6306.5 mi. A reasonable flight in good conditions will take 15h 16m.

  • When did momondo last update prices for flights from Rome to Ontario Airport?

    Prices for flights from Rome to Ontario Airport refresh daily.

  • How old do you have to be to fly from Rome to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rome to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Rome to Ontario?

It is quick and easy to find Rome to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from Rome to Ontario with flexible booking policies on momondo?

Flights from Rome to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Rome to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Rome to Ontario.

I’m not ready to book a flight from Rome to Ontario right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Rome to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

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dom. 4/19
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