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Cheap flights from Cincinnati to Los Angeles from $134

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 8/25. 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

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Find the cheapest flights from Cincinnati to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:16 pm - 11:47 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
9h 31m1 stop Denver Intl
Frontier Logo
11:38 am - 12:29 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
9h 51m1 stop Denver Intl
$274Frontier
Tue, Oct 6 - Sat, Oct 10
Frontier Logo
5:16 pm - 11:47 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
9h 31m1 stop Denver Intl
Frontier Logo
8:24 pm - 6:47 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
7h 23m1 stop Las Vegas Harry Reid Intl
$274Frontier
Wed, Sep 30 - Mon, Oct 5
Delta Logo
7:35 pm - 11:58 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
7h 23m1 stop Salt Lake City
Delta Logo
6:00 am - 3:09 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 09m1 stop Salt Lake City
$399Delta
Thu, Dec 17 - Fri, Dec 25
Delta Logo
6:00 am - 11:10 amCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
8h 10m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 3:09 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 09m1 stop Salt Lake City
$399Delta
Wed, Dec 16 - Fri, Dec 25
American Airlines Logo
9:54 am - 6:15 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
11h 21m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl
American Airlines Logo
10:00 am - 12:27 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
11h 27m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
$409American Airlines
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
11:58 am - 6:17 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
9h 19m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl
American Airlines Logo
1:04 pm - 12:41 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
8h 37m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
$410American Airlines
Sat, Sep 12 - Wed, Sep 16
United Airlines Logo
8:00 am - 12:50 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
7h 50m1 stop Denver Intl
United Airlines Logo
7:13 pm - 9:16 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
11h 03m2 stops San Francisco Chicago O'Hare Intl
$418United Airlines
Mon, Aug 31 - Mon, Aug 31
Multiple Airlines Logo
8:30 am - 2:47 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
9h 17m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
9:16 am - 6:26 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 10m1 stop Dallas/Fort Worth
$421Multiple Airlines
Thu, Dec 10 - Mon, Dec 14
United Airlines Logo
5:25 am - 12:50 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
10h 25m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
7:13 pm - 9:16 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
11h 03m2 stops San Francisco Chicago O'Hare Intl
$423United Airlines
Mon, Aug 31 - Mon, Aug 31
Southwest Logo
12:55 pm - 10:10 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
12h 15m1 stop Denver Intl
Southwest Logo
11:55 pm - 2:55 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
12h 00m1 stop Chicago Midway
$424Southwest
Mon, Aug 31 - Mon, Aug 31

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Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets
Frontier
Oct 10
CVG6:05 amCincinnati Cinci./N. Kentucky
7h 38m
1 stop
ONT10:43 amOntario
Oct 14
ONT11:38 amOntario
9h 51m
1 stop
CVG12:29 amCincinnati Cinci./N. Kentucky
$274
Frontier
Aug 31
CVG12:26 pmCincinnati Cinci./N. Kentucky
33h 35m
2 stops
ONT7:01 pmOntario
Sep 22
ONT6:15 amOntario
6h 56m
1 stop
CVG4:11 pmCincinnati Cinci./N. Kentucky
$280
Frontier
Sep 5
CVG8:30 pmCincinnati Cinci./N. Kentucky
6h 20m
1 stop
ONT11:50 pmOntario
Sep 7
ONT10:17 pmOntario
18h 58m
1 stop
CVG8:15 pmCincinnati Cinci./N. Kentucky
$284

American Airlines flights from Cincinnati to Ontario

Our best American Airlines deals on Cincinnati to Ontario flight tickets
American Airlines
Sep 2
CVG9:54 amCincinnati Cinci./N. Kentucky
11h 21m
2 stops
ONT6:15 pmOntario
Sep 6
ONT10:00 amOntario
11h 27m
2 stops
CVG12:27 amCincinnati Cinci./N. Kentucky
$409
American Airlines
Aug 20
CVG11:31 amCincinnati Cinci./N. Kentucky
9h 44m
2 stops
ONT6:15 pmOntario
Aug 24
ONT12:33 pmOntario
7h 49m
1 stop
CVG11:22 pmCincinnati Cinci./N. Kentucky
$520
American Airlines
Aug 21
CVG1:46 pmCincinnati Cinci./N. Kentucky
8h 01m
1 stop
ONT6:47 pmOntario
Aug 23
ONT8:01 pmOntario
11h 42m
2 stops
CVG10:43 amCincinnati Cinci./N. Kentucky
$566

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 August 7, 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 Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 10/6

5:16 pm-11:47 pm

1 stop9h 31m

Ontario

Sat 10/10

11:38 am-12:29 am

1 stop9h 51m

$274

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 9/30

5:16 pm-11:47 pm

1 stop9h 31m

Ontario

Mon 10/5

8:24 pm-6:47 am

1 stop7h 23m

$274
Quickest round-trip

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 12/17

7:35 pm-11:58 pm

1 stop7h 23m

Ontario

Fri 12/25

6:00 am-3:09 pm

1 stop6h 09m

$399

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 12/16

6:00 am-11:10 am

1 stop8h 10m

Ontario

Fri 12/25

6:00 am-3:09 pm

1 stop6h 09m

$399

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 9/2

9:54 am-6:15 pm

2 stops11h 21m

Ontario

Sun 9/6

10:00 am-12:27 am

2 stops11h 27m

$409

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 9/12

11:58 am-6:17 pm

2 stops9h 19m

Ontario

Wed 9/16

1:04 pm-12:41 am

2 stops8h 37m

$410

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 8/31

8:00 am-12:50 pm

1 stop7h 50m

Ontario

Mon 8/31

7:13 pm-9:16 am

2 stops11h 03m

$418

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 12/10

8:30 am-2:47 pm

1 stop9h 17m

Ontario

Mon 12/14

9:16 am-6:26 pm

1 stop6h 10m

$421

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 8/31

5:25 am-12:50 pm

2 stops10h 25m

Ontario

Mon 8/31

7:13 pm-9:16 am

2 stops11h 03m

$423

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 8/31

12:55 pm-10:10 pm

1 stop12h 15m

Ontario

Mon 8/31

11:55 pm-2:55 pm

1 stop12h 00m

$424

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $340 to $476.
The lowest price recently found on this route was $274.

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 July instead. Flights to Ontario in July, while not as cheap as those in January, still average around $358.

How have Cincinnati to Ontario flight prices changed over time?

As of August 2026, prices for Cincinnati to Ontario flights are approximately 9% cheaper 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 20m

Direct flights

None
The fastest flight from Cincinnati to Ontario takes 6h 20m
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 20m.

  • 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
2,721 reviews
Search Frontier flights
United AirlinesPriceFrom $316Free CancellationRating
7.4
10,085 reviews
Search United Airlines flights
American AirlinesPriceFrom $336Free CancellationRating
7.1
11,881 reviews
Search American Airlines flights
DeltaPriceFrom $337Free CancellationRating
7.8
8,502 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.

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