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Cheap flights from Cincinnati to Los Angeles from $138

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 7/1. 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 - 11:50 pm
CVG
-
ONT
6h 16m
1 stop
Frontier Logo
6:00 am - 7:29 pm
ONT
-
CVG
10h 29m
1 stop
$258Frontier
Tue, Aug 11 - Wed, Aug 12
Frontier Logo
9:30 pm - 3:54 pm
CVG
-
ONT
21h 24m
1 stop
Frontier Logo
11:47 am - 7:35 pm
ONT
-
CVG
28h 48m
1 stop
$268Frontier
Thu, Aug 13 - Mon, Aug 17
Frontier Logo
8:40 pm - 3:09 pm
CVG
-
ONT
21h 29m
1 stop
Frontier Logo
1:27 pm - 7:35 pm
ONT
-
CVG
27h 08m
1 stop
$270Frontier
Wed, Aug 19 - Wed, Aug 26
Frontier Logo
8:36 pm - 11:49 pm
CVG
-
ONT
6h 13m
1 stop
Frontier Logo
6:00 am - 7:31 pm
ONT
-
CVG
10h 31m
1 stop
$274Frontier
Sat, Aug 22 - Tue, Aug 25
Frontier Logo
8:36 pm - 11:49 pm
CVG
-
ONT
6h 13m
1 stop
Frontier Logo
11:43 am - 7:35 pm
ONT
-
CVG
28h 52m
1 stop
$283Frontier
Fri, Aug 21 - Mon, Aug 24
Multiple Airlines Logo
12:53 pm - 3:14 pm
CVG
-
ONT
29h 21m
2 stops
Multiple Airlines Logo
3:40 pm - 3:52 pm
ONT
-
CVG
21h 12m
1 stop
$285Multiple Airlines
Fri, Jul 24 - Wed, Jul 29
Frontier Logo
8:36 pm - 11:49 pm
CVG
-
ONT
6h 13m
1 stop
Frontier Logo
11:16 am - 8:21 pm
ONT
-
CVG
6h 05m
1 stop
$288Frontier
Tue, Sep 1 - Thu, Sep 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
$290Frontier
Tue, Oct 20 - Tue, Oct 27
Frontier Logo
8:40 pm - 7:48 pm
CVG
-
ONT
26h 08m
1 stop
Frontier Logo
3:34 pm - 7:35 pm
ONT
-
CVG
25h 01m
1 stop
$294Frontier
Thu, Aug 20 - Mon, Aug 24
Frontier Logo
9:30 pm - 8:03 am
CVG
-
ONT
13h 33m
1 stop
Frontier Logo
1:38 pm - 8:25 pm
ONT
-
CVG
27h 47m
1 stop
$295Frontier
Sun, Aug 2 - Wed, Aug 5

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Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets
Frontier
Aug 11
CVG8:34 pmCincinnati Cinci./N. Kentucky
6h 16m
1 stop
ONT11:50 pmOntario
Aug 12
ONT6:00 amOntario
10h 29m
1 stop
CVG7:29 pmCincinnati Cinci./N. Kentucky
$258
Frontier
Aug 13
CVG9:30 pmCincinnati Cinci./N. Kentucky
21h 24m
1 stop
ONT3:54 pmOntario
Aug 17
ONT11:47 amOntario
28h 48m
1 stop
CVG7:35 pmCincinnati Cinci./N. Kentucky
$268
Frontier
Aug 19
CVG8:40 pmCincinnati Cinci./N. Kentucky
21h 29m
1 stop
ONT3:09 pmOntario
Aug 26
ONT1:27 pmOntario
27h 08m
1 stop
CVG7:35 pmCincinnati Cinci./N. Kentucky
$270

Delta flights from Cincinnati to Ontario

Our best Delta deals on Cincinnati to Ontario flight tickets
Delta
Oct 21
CVG6:40 amCincinnati Cinci./N. Kentucky
8h 50m
1 stop
ONT12:30 pmOntario
Oct 28
ONT1:00 pmOntario
7h 09m
1 stop
CVG11:09 pmCincinnati Cinci./N. Kentucky
$311
Delta
Oct 19
CVG5:50 pmCincinnati Cinci./N. Kentucky
7h 24m
1 stop
ONT10:14 pmOntario
Oct 28
ONT1:00 pmOntario
7h 09m
1 stop
CVG11:09 pmCincinnati Cinci./N. Kentucky
$344

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 June 12, 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

Tue 8/11

8:34 pm-11:50 pm

1 stop6h 16m

Ontario

Wed 8/12

6:00 am-7:29 pm

1 stop10h 29m

$258

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 8/13

9:30 pm-3:54 pm

1 stop21h 24m

Ontario

Mon 8/17

11:47 am-7:35 pm

1 stop28h 48m

$268

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 8/19

8:40 pm-3:09 pm

1 stop21h 29m

Ontario

Wed 8/26

1:27 pm-7:35 pm

1 stop27h 08m

$270

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 8/22

8:36 pm-11:49 pm

1 stop6h 13m

Ontario

Tue 8/25

6:00 am-7:31 pm

1 stop10h 31m

$274

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 8/21

8:36 pm-11:49 pm

1 stop6h 13m

Ontario

Mon 8/24

11:43 am-7:35 pm

1 stop28h 52m

$283

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 7/24

12:53 pm-3:14 pm

2 stops29h 21m

Ontario

Wed 7/29

3:40 pm-3:52 pm

1 stop21h 12m

$285
Quickest round-trip

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 9/1

8:36 pm-11:49 pm

1 stop6h 13m

Ontario

Thu 9/17

11:16 am-8:21 pm

1 stop6h 05m

$288

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 10/20

6:05 am-10:43 am

1 stop7h 38m

Ontario

Tue 10/27

6:15 am-8:29 pm

1 stop11h 14m

$290

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 8/20

8:40 pm-7:48 pm

1 stop26h 08m

Ontario

Mon 8/24

3:34 pm-7:35 pm

1 stop25h 01m

$294

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sun 8/2

9:30 pm-8:03 am

1 stop13h 33m

Ontario

Wed 8/5

1:38 pm-8:25 pm

1 stop27h 47m

$295

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?

What is the cheapest month to fly to Ontario?

In general, August 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 $317. If you aren’t able to travel during the month of August, then book flights to Ontario from Cincinnati during January instead. Flights to Ontario in January, while not as cheap as those in August, still average around $336.

How have Cincinnati to Ontario flight prices changed over time?

As of June 2026, prices for Cincinnati to Ontario flights are approximately 45% 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 13m

Direct flights

None
The fastest flight from Cincinnati to Ontario takes 6h 13m
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 13m.

  • 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
2,895 reviews
Search Frontier flights
American AirlinesPriceFrom $215Free CancellationRating
7.1
11,646 reviews
Search American Airlines flights
United AirlinesPriceFrom $316Free CancellationRating
7.4
9,810 reviews
Search United Airlines flights
SouthwestPriceFrom $318Free CancellationRating
7.9
4,233 reviews
Search Southwest flights
DeltaPriceFrom $337Free CancellationRating
7.9
8,404 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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