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Cheap flights from Cincinnati to Los Angeles from $124

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cincinnati to Los Angeles departing on 8/18. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Cincinnati to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:34 pm - 10:04 am
CVG
-
ONT
16h 30m
1 stop
Frontier Logo
7:56 pm - 11:21 am
ONT
-
CVG
36h 25m
2 stops
$238Frontier
Fri, Aug 14 - Tue, Aug 18
Frontier Logo
8:34 pm - 10:04 am
CVG
-
ONT
16h 30m
1 stop
Frontier Logo
7:56 pm - 11:21 am
ONT
-
CVG
36h 25m
2 stops
$239Frontier
Fri, Aug 14 - Tue, Aug 18
Frontier Logo
8:26 pm - 11:50 pm
CVG
-
ONT
6h 24m
1 stop
Frontier Logo
6:00 am - 7:35 pm
ONT
-
CVG
10h 35m
1 stop
$246Frontier
Sat, Aug 15 - Tue, Aug 18
Frontier Logo
9:20 pm - 9:27 pm
CVG
-
ONT
27h 07m
1 stop
Frontier Logo
6:00 am - 7:25 pm
ONT
-
CVG
10h 25m
1 stop
$247Frontier
Thu, Aug 27 - Wed, Sep 2
Frontier Logo
9:20 pm - 3:54 pm
CVG
-
ONT
21h 34m
1 stop
Frontier Logo
3:40 pm - 8:15 pm
ONT
-
CVG
25h 35m
1 stop
$248Frontier
Mon, Aug 31 - Thu, Sep 3
Frontier Logo
8:26 pm - 11:50 pm
CVG
-
ONT
6h 24m
1 stop
Frontier Logo
3:40 pm - 8:15 pm
ONT
-
CVG
25h 35m
1 stop
$253Frontier
Sat, Aug 15 - Tue, Aug 18
Frontier Logo
9:26 pm - 4:10 pm
CVG
-
ONT
21h 44m
1 stop
Frontier Logo
8:07 am - 11:59 pm
ONT
-
CVG
12h 52m
1 stop
$257Frontier
Thu, Sep 10 - Mon, Sep 14
Frontier Logo
9:26 pm - 8:54 pm
CVG
-
ONT
26h 28m
1 stop
Frontier Logo
6:00 am - 11:20 am
ONT
-
CVG
26h 20m
1 stop
$258Frontier
Mon, Sep 28 - Tue, Oct 6
Frontier Logo
6:05 am - 10:43 am
CVG
-
ONT
7h 38m
1 stop
Frontier Logo
8:07 am - 11:59 pm
ONT
-
CVG
12h 52m
1 stop
$260Frontier
Mon, Oct 12 - Sat, Oct 17
Frontier Logo
6:05 am - 10:43 am
CVG
-
ONT
7h 38m
1 stop
Frontier Logo
6:15 am - 8:29 pm
ONT
-
CVG
11h 14m
1 stop
$261Frontier
Wed, Oct 21 - Sat, Oct 31

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Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets
Frontier
Aug 14
CVG8:34 pmCincinnati Cinci./N. Kentucky
16h 30m
1 stop
ONT10:04 amOntario
Aug 18
ONT7:56 pmOntario
36h 25m
2 stops
CVG11:21 amCincinnati Cinci./N. Kentucky
$238
Frontier
Aug 14
CVG8:34 pmCincinnati Cinci./N. Kentucky
16h 30m
1 stop
ONT10:04 amOntario
Aug 18
ONT7:56 pmOntario
36h 25m
2 stops
CVG11:21 amCincinnati Cinci./N. Kentucky
$239
Frontier
Aug 15
CVG8:26 pmCincinnati Cinci./N. Kentucky
6h 24m
1 stop
ONT11:50 pmOntario
Aug 18
ONT6:00 amOntario
10h 35m
1 stop
CVG7:35 pmCincinnati Cinci./N. Kentucky
$246

momondo Fare Finder

 
Customize your flight search to find flights from Cincinnati 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 July 25, 2026.
Use the filters below to find and compare flights from Cincinnati to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 8/14

8:34 pm-10:04 am

1 stop16h 30m

Ontario

Tue 8/18

7:56 pm-11:21 am

2 stops36h 25m

$238

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 8/14

8:34 pm-10:04 am

1 stop16h 30m

Ontario

Tue 8/18

7:56 pm-11:21 am

2 stops36h 25m

$239
Quickest round-trip

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 8/15

8:26 pm-11:50 pm

1 stop6h 24m

Ontario

Tue 8/18

6:00 am-7:35 pm

1 stop10h 35m

$246

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 8/27

9:20 pm-9:27 pm

1 stop27h 07m

Ontario

Wed 9/2

6:00 am-7:25 pm

1 stop10h 25m

$247

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 8/31

9:20 pm-3:54 pm

1 stop21h 34m

Ontario

Thu 9/3

3:40 pm-8:15 pm

1 stop25h 35m

$248

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 8/15

8:26 pm-11:50 pm

1 stop6h 24m

Ontario

Tue 8/18

3:40 pm-8:15 pm

1 stop25h 35m

$253

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 9/10

9:26 pm-4:10 pm

1 stop21h 44m

Ontario

Mon 9/14

8:07 am-11:59 pm

1 stop12h 52m

$257

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 9/28

9:26 pm-8:54 pm

1 stop26h 28m

Ontario

Tue 10/6

6:00 am-11:20 am

1 stop26h 20m

$258

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 10/12

6:05 am-10:43 am

1 stop7h 38m

Ontario

Sat 10/17

8:07 am-11:59 pm

1 stop12h 52m

$260

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 10/21

6:05 am-10:43 am

1 stop7h 38m

Ontario

Sat 10/31

6:15 am-8:29 pm

1 stop11h 14m

$261

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 Cincinnati 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

What is the typical price of a round-trip flight between Cincinnati and Ontario?

Prices are currently low for flights on this route.

Typical prices usually range from $303 to $452.
The lowest price recently found on this route was $238.

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from Cincinnati to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $336. If you aren’t able to travel during the month of January, then book flights to Ontario from Cincinnati during August instead. Flights to Ontario in August, while not as cheap as those in January, still average around $340.

How have Cincinnati to Ontario flight prices changed over time?

As of July 2026, prices for Cincinnati to Ontario flights are approximately 54% more expensive when compared to flights at the same time last year.

When to book flights from Cincinnati to Ontario

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

Cheap Cincinnati to Ontario (CVG to ONT) flight deals and tips

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

Fastest flight time

6h 16m

Direct flights

None
The fastest flight from Cincinnati to Ontario takes 6h 16m
There are no direct flights from Cincinnati to Ontario. There are no popular flight routes from Cincinnati to Ontario.
Search flight deals

Frequently asked questions about flying from Cincinnati to Ontario

  • How far is Cincinnati Cinci./N. Kentucky to Ontario by plane?

    The distance between Cincinnati Cinci./N. Kentucky and Ontario is about 1859.2 mi. In terms of flight time, this usually takes a little over 6h 16m.

  • When did momondo last update prices for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport?

    Prices for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport?

  • How old do you have to be to fly from Cincinnati Cinci./N. Kentucky Airport 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 Cincinnati Cinci./N. Kentucky Airport to Ontario Airport.

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

    The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Cincinnati to Ontario?

Best airlines flying from Cincinnati to Ontario

Compare and see reviews for airlines that fly from Cincinnati to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $157Free CancellationRating
5.6
2,770 reviews
Search Frontier flights
American AirlinesPriceFrom $278Free CancellationRating
7.1
11,848 reviews
Search American Airlines flights
United AirlinesPriceFrom $316Free CancellationRating
7.4
10,034 reviews
Search United Airlines flights
SouthwestPriceFrom $318Free CancellationRating
8.0
4,233 reviews
Search Southwest flights
DeltaPriceFrom $337Free CancellationRating
7.8
8,486 reviews
Search Delta flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Cincinnati to Ontario for you.

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

Yes. momondo allows you to filter the results for Cincinnati to Ontario flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Cincinnati and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Ontario from Cincinnati. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ontario trip

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