Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Rome to Los Angeles from $483

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 5/27. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Rome to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
1:30 pm - 6:57 pm
FCO
-
ONT
38h 27m
1 stop
British Airways Logo
11:59 pm - 12:05 pm
ONT
-
FCO
27h 06m
1 stop
$599British Airways
Thu, Oct 1 - Sun, Oct 11
British Airways Logo
1:10 pm - 10:58 pm
FCO
-
ONT
18h 48m
1 stop
British Airways Logo
12:33 pm - 12:05 pm
ONT
-
FCO
14h 32m
1 stop
$615British Airways
Mon, Aug 24 - Tue, Sep 8
British Airways Logo
1:10 pm - 9:12 pm
FCO
-
ONT
17h 02m
1 stop
British Airways Logo
12:33 pm - 12:05 pm
ONT
-
FCO
14h 32m
1 stop
$620British Airways
Mon, Aug 24 - Sun, Sep 6
American Airlines Logo
12:00 pm - 11:06 pm
FCO
-
ONT
20h 06m
2 stops
American Airlines Logo
6:00 am - 11:25 am
ONT
-
FCO
20h 25m
2 stops
$621American Airlines
Wed, Sep 16 - Tue, Sep 29
British Airways Logo
1:10 pm - 10:58 pm
FCO
-
ONT
18h 48m
1 stop
British Airways Logo
11:59 pm - 12:05 pm
ONT
-
FCO
27h 06m
1 stop
$622British Airways
Mon, Aug 24 - Sun, Sep 6
American Airlines Logo
12:15 pm - 9:29 am
FCO
-
ONT
30h 14m
2 stops
American Airlines Logo
6:00 am - 3:10 pm
ONT
-
FCO
24h 10m
2 stops
$623American Airlines
Tue, Jul 21 - Mon, Aug 10
British Airways Logo
1:10 pm - 10:58 pm
FCO
-
ONT
18h 48m
1 stop
British Airways Logo
11:59 pm - 12:05 pm
ONT
-
FCO
27h 06m
1 stop
$624British Airways
Sat, Aug 15 - Sat, Sep 5
British Airways Logo
1:10 pm - 11:06 pm
FCO
-
ONT
18h 56m
1 stop
British Airways Logo
4:47 pm - 7:10 pm
ONT
-
FCO
17h 23m
2 stops
$625British Airways
Wed, Oct 14 - Thu, Nov 5
British Airways Logo
1:30 pm - 11:06 pm
FCO
-
ONT
18h 36m
1 stop
British Airways Logo
10:25 am - 10:45 am
ONT
-
FCO
16h 20m
1 stop
$631British Airways
Thu, Oct 1 - Sat, Oct 31
British Airways Logo
1:30 pm - 10:04 pm
FCO
-
ONT
17h 34m
1 stop
British Airways Logo
12:35 pm - 12:05 pm
ONT
-
FCO
14h 30m
1 stop
$634British Airways
Sat, Sep 5 - Sat, Sep 19

British Airways flights from Rome to Ontario

Our best British Airways deals on Rome to Ontario flight tickets
British Airways
Oct 1
FCO1:30 pmRome Fiumicino
38h 27m
1 stop
ONT6:57 pmOntario
Oct 11
ONT11:59 pmOntario
27h 06m
1 stop
FCO12:05 pmRome Fiumicino
$599
British Airways
Sep 16
FCO1:30 pmRome Fiumicino
16h 38m
1 stop
ONT9:08 pmOntario
Nov 14
ONT10:47 amOntario
14h 58m
1 stop
FCO10:45 amRome Fiumicino
$614
British Airways
Aug 24
FCO1:10 pmRome Fiumicino
18h 48m
1 stop
ONT10:58 pmOntario
Sep 8
ONT12:33 pmOntario
14h 32m
1 stop
FCO12:05 pmRome Fiumicino
$615

Iberia flights from Rome to Ontario

Our best Iberia deals on Rome to Ontario flight tickets
Iberia
Sep 9
FCO1:10 pmRome Fiumicino
18h 56m
1 stop
ONT11:06 pmOntario
Sep 26
ONT2:22 pmOntario
36h 43m
1 stop
FCO12:05 pmRome Fiumicino
$670
Iberia
May 10
FCO1:10 pmRome Fiumicino
18h 30m
1 stop
ONT10:40 pmOntario
May 12
ONT2:08 pmOntario
36h 57m
1 stop
FCO12:05 pmRome Fiumicino
$1,265

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 May 7, 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

Thu 10/1

1:30 pm-6:57 pm

1 stop38h 27m

Ontario

Sun 10/11

11:59 pm-12:05 pm

1 stop27h 06m

$599

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Mon 8/24

1:10 pm-10:58 pm

1 stop18h 48m

Ontario

Tue 9/8

12:33 pm-12:05 pm

1 stop14h 32m

$615
Quickest round-trip

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Mon 8/24

1:10 pm-9:12 pm

1 stop17h 02m

Ontario

Sun 9/6

12:33 pm-12:05 pm

1 stop14h 32m

$620

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Wed 9/16

12:00 pm-11:06 pm

2 stops20h 06m

Ontario

Tue 9/29

6:00 am-11:25 am

2 stops20h 25m

$621

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Mon 8/24

1:10 pm-10:58 pm

1 stop18h 48m

Ontario

Sun 9/6

11:59 pm-12:05 pm

1 stop27h 06m

$622

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Tue 7/21

12:15 pm-9:29 am

2 stops30h 14m

Ontario

Mon 8/10

6:00 am-3:10 pm

2 stops24h 10m

$623

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Sat 8/15

1:10 pm-10:58 pm

1 stop18h 48m

Ontario

Sat 9/5

11:59 pm-12:05 pm

1 stop27h 06m

$624

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Wed 10/14

1:10 pm-11:06 pm

1 stop18h 56m

Ontario

Thu 11/5

4:47 pm-7:10 pm

2 stops17h 23m

$625

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Thu 10/1

1:30 pm-11:06 pm

1 stop18h 36m

Ontario

Sat 10/31

10:25 am-10:45 am

1 stop16h 20m

$631

RomeOntario

FCO - ONT

FCOONT

Rome Fiumicino

Sat 9/5

1:30 pm-10:04 pm

1 stop17h 34m

Ontario

Sat 9/19

12:35 pm-12:05 pm

1 stop14h 30m

$634

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

16h 19m

Direct flights

None
The fastest flight from Rome to Ontario takes 16h 19m
There are no direct flights from Rome to Ontario. There are no popular flight routes from Rome to Ontario.
Search flight deals

Frequently asked questions about flying from Rome to Ontario

  • 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 16h 19m.

  • 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.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 6/6
Sat 6/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States