HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$85+ Cheap flights from Columbus (CMH) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
CMH — ONT
Apr 5 — Apr 121
Sun 4/5
Sun 4/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Columbus to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Columbus to Ontario

Cheapest flights from Columbus to Ontario
Explore the most affordable flight options available from Columbus to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 6, 2026.

This CheapOair deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:15 pm
CMH
-
ONT
1 stop14h 16m
Frontier
Sun 4/2612:59 am
ONT
-
CMH
1 stop13h 50m
Frontier
Deal found 3/3$201
This Expedia deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:53 pm
CMH
-
ONT
1 stop7h 02m
Frontier
Sat 4/2512:59 am
ONT
-
CMH
1 stop15h 35m
Frontier
Deal found 3/3$211
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:18 pm
CMH
-
ONT
2 stops39h 06m
Frontier
Thu 4/2312:59 am
ONT
-
CMH
1 stop14h 59m
Frontier
Deal found 3/3$218
This CheapOair deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:15 pm
CMH
-
ONT
1 stop14h 16m
Frontier
Sat 4/2512:59 am
ONT
-
CMH
1 stop15h 35m
Frontier
Deal found 3/1$222
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:08 pm
CMH
-
ONT
1 stop30h 47m
Frontier
Wed 5/67:29 pm
ONT
-
CMH
2 stops16h 12m
Frontier
Deal found 3/6$231
This Kiwi.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:05 am
CMH
-
ONT
2 stops17h 34m
Multiple Airlines
Sun 4/1912:59 am
ONT
-
CMH
1 stop15h 27m
Multiple Airlines
Deal found 3/2$238
This Frontier deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/37:14 pm
CMH
-
ONT
1 stop7h 42m
Frontier
Fri 4/106:20 am
ONT
-
CMH
1 stop8h 59m
Frontier
Deal found 3/4$240
This CheapOair deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:18 pm
CMH
-
ONT
1 stop14h 13m
Frontier
Sun 4/1912:59 am
ONT
-
CMH
1 stop15h 27m
Frontier
Deal found 3/4$243
This CheapOair deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/78:18 pm
CMH
-
ONT
1 stop6h 37m
Frontier
Sat 5/912:59 am
ONT
-
CMH
1 stop15h 24m
Frontier
Deal found 3/4$251
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:18 pm
CMH
-
ONT
1 stop14h 13m
Frontier
Sun 4/195:12 pm
ONT
-
CMH
1 stop23h 14m
Frontier
Deal found 3/5$255
This Frontier deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/297:33 pm
CMH
-
ONT
1 stop7h 26m
Frontier
Fri 4/106:20 am
ONT
-
CMH
1 stop8h 59m
Frontier
Deal found 3/4$260
This CheapOair deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:08 pm
CMH
-
ONT
1 stop6h 47m
Frontier
Sat 5/912:59 am
ONT
-
CMH
1 stop15h 24m
Frontier
Deal found 3/3$272

Find flight deals from Columbus to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Columbus (CMH) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$201
(CheapOair)

One-way from

$85
(Kiwi.com)

Popular in

February

Cheapest in

September

Average price

$380
Provider with most accurate pricing for Columbus-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Columbus-Ontario flights.
Search Deals
From Columbus to Ontario
Search Deals
One-way flight from Columbus to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Columbus 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, Cheapflights users made 2,558,603 searches. Data last updated March 6, 2026.
Use the filters below to find and compare flights from Columbus Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 3/24

3:30 pm-8:50 pm

1 stop8h 20m

Ontario

Tue 3/31

1:34 pm-10:43 pm

1 stop6h 09m

$323

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Tue 5/5

3:00 pm-9:00 pm

1 stop9h 00m

Ontario

Sat 5/9

10:00 pm-9:05 am

1 stop8h 05m

$343

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Sat 4/25

7:05 am-12:14 pm

1 stop8h 09m

Ontario

Sat 4/25

10:15 pm-9:00 am

1 stop7h 45m

$355
Quickest round-trip

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Sun 4/5

8:25 pm-12:15 am

1 stop6h 50m

Ontario

Sun 4/12

3:50 pm-12:40 am

1 stop5h 50m

$457

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Mon 3/30

5:59 pm-10:26 pm

1 stop7h 27m

Ontario

Tue 4/7

1:34 pm-10:43 pm

1 stop6h 09m

$469

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 4/15

4:57 pm-9:50 pm

1 stop7h 53m

Ontario

Sun 4/19

1:34 pm-10:43 pm

1 stop6h 09m

$470

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 4/22

7:00 am-12:20 pm

1 stop8h 20m

Ontario

Sun 4/26

5:10 am-2:32 pm

1 stop6h 22m

$470

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Thu 5/28

7:54 pm-11:58 pm

1 stop31h 04m

Ontario

Mon 6/8

4:03 pm-5:40 am

1 stop10h 37m

$535

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Thu 5/21

3:30 pm-8:42 pm

1 stop8h 12m

Ontario

Mon 5/25

5:00 am-2:28 pm

1 stop6h 28m

$547

ColumbusOntario

CMH - ONT

CMHONT

Columbus

Wed 3/18

8:34 am-5:41 pm

2 stops12h 07m

Ontario

Thu 3/26

5:15 am-2:28 pm

1 stop6h 13m

$563

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/1

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

Compare providers for flights from Columbus to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Columbus to Ontario in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Columbus Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Columbus Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Columbus Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Columbus Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Columbus Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Columbus to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Columbus with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Columbus Airport to Ontario

What is the cheapest month to book a flight from Columbus Airport to Ontario?

Currently, May is the cheapest month in which you can book a flight from Columbus Airport to Ontario (average of $112). Flying from Columbus Airport to Ontario in March is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated March 6, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Columbus Airport to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,309 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,309 reviews
Southwest
8.0
Very good
4,309 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,261 reviews
Southwest
8.0
Very good
4,309 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,403 reviews
Southwest
8.0
Very good
4,309 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.1
Good
11,395 reviews
Southwest
8.0
Very good
4,309 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Columbus to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Columbus?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Columbus. On average, Ontario has 0 inbound flights from Columbus per day from 4 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Columbus Airport to Ontario?

    There are many flights that can get you from Columbus Airport to Ontario in 6h 50m. Fly via United Airlines, Delta, or Southwest to get the fastest option. There are 1944 mi between Columbus Airport and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Columbus Airport to Ontario round-trip?

    Flying on Delta is currently your cheapest option to Ontario, with prices starting at $208. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $228 and $296, respectively. These flights start at 49% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Columbus Airport to Ontario one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $143. However, be on the lookout for offers from American Airlines and Southwest, as they are both options that can get you from Columbus Airport to Ontario for a low price.

  • Can I find deals for flights from Columbus to Ontario that include hotel bookings?

    Yes. In addition to deals on Columbus to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Columbus to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Columbus to Ontario.

  • Can I find deals for business class flights from Columbus to Ontario?

    Yes. Cheapflights offers flight deals from Columbus to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Columbus Airport to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Columbus Airport to Ontario (average of $112). Flying from Columbus Airport to Ontario in March is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Columbus to Ontario

Discover the top 4 airlines that operate flights from Columbus to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$208Average$347FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$228Average$526FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$296Average$420FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$346Average$434FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.