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$100+ Cheap flights from Indiana 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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ONT
jun. 23 — jun. 301
ma. 6/23
ma. 6/30
1 adult, Economy
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Cheap flight deals from Indiana to Ontario

Keep the following information in mind while searching for Indiana to Ontario flight deals. Data was last updated juni 18, 2025.

Round-trip from

$200
(Frontier)

One-way from

$100
(Frontier)

Popular in

December

Cheapest in

August

Average price

$334
From Indiana to Ontario
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One-way flight from Indiana to Ontario
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Highest demand for flights based on searches. 10% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Indiana to Ontario

Cheapest flights from Indiana to Ontario
Explore the most affordable flight options available from Indiana to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juni 18, 2025.

This Frontier deal was found by Cheapflights users on 6/16. 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.
to. 7/106:08 pmCVG - ONT
1 stop8h 42mFrontier
lø. 7/128:09 pmONT - CVG
1 stop10h 36mFrontier
Deal found 6/16$200
This Frontier deal was found by Cheapflights users on 6/17. 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.
fr. 7/46:25 amMDW - ONT
1 stop7h 27mFrontier
sø. 7/612:59 amONT - MDW
1 stop8h 42mFrontier
Deal found 6/17$200
This Frontier deal was found by Cheapflights users on 6/16. 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.
fr. 6/2711:45 amIND - ONT
1 stop10h 29mFrontier
on. 7/25:21 pmONT - IND
1 stop6h 05mFrontier
Deal found 6/16$200
This Gotogate deal was found by Cheapflights users on 6/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 7/17:00 amORD - ONT
1 stop18h 50mFrontier
ma. 7/76:00 amONT - ORD
1 stop13h 06mFrontier
Deal found 6/16$205
This American Airlines deal was found by Cheapflights users on 6/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fr. 8/1512:25 pmSBN - ONT
1 stop8h 59mAmerican Airlines
ma. 9/111:59 pmONT - SBN
1 stop8h 56mAmerican Airlines
Deal found 6/17$277
This Hawaiian Airlines deal was found by Cheapflights users on 6/17. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 8/56:37 pmCVG - ONT
1 stop8h 36mHawaiian Airlines
ti. 8/126:00 amONT - CVG
1 stop8h 37mHawaiian Airlines
Deal found 6/17$278
This Delta deal was found by Cheapflights users on 6/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 8/166:51 pmCVG - ONT
1 stop6h 49mDelta
on. 8/206:05 amONT - CVG
1 stop5h 38mDelta
Deal found 6/16$279
This American Airlines deal was found by Cheapflights users on 6/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 8/2611:37 amCVG - ONT
2 stops9h 15mAmerican Airlines
sø. 8/312:31 pmONT - CVG
1 stop6h 23mAmerican Airlines
Deal found 6/17$284
This Delta deal was found by Cheapflights users on 6/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 8/96:15 amSBN - ONT
1 stop7h 15mDelta
ti. 8/1911:45 amONT - SBN
1 stop8h 27mDelta
Deal found 6/17$287
This American Airlines deal was found by Cheapflights users on 6/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
on. 8/277:05 amDAY - ONT
1 stop7h 47mAmerican Airlines
on. 9/310:54 amONT - DAY
1 stop6h 26mAmerican Airlines
Deal found 6/16$289
This Alaska Airlines deal was found by Cheapflights users on 6/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 7/18:40 amCVG - ONT
1 stop9h 06mAlaska Airlines
ti. 7/16:58 pmONT - CVG
1 stop9h 09mAlaska Airlines
Deal found 6/17$290
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 10/166:00 amORD - ONT
1 stop8h 37mAlaska Airlines
ti. 10/211:31 pmONT - ORD
1 stop8h 28mAlaska Airlines
Deal found 6/15$292

Cheapflights Fare Finder

Customize your flight search to find flights from Indiana 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 juni 18, 2025.
Use the filters below to find and compare flights from Indiana to Ontario that are best for you.

Fly from

Indiana

Fly to

Ontario

Route

Depart

Return

Price

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

to. 7/10

6:08 pm-11:50 pm

1 stop8h 42m

Ontario

lø. 7/12

8:09 pm-9:45 am

1 stop10h 36m

$200

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

fr. 7/4

6:25 am-11:52 am

1 stop7h 27m

Ontario

sø. 7/6

12:59 am-11:41 am

1 stop8h 42m

$200

IndianapolisOntario

IND - ONT

INDONT

Indianapolis

fr. 7/4

6:00 am-9:01 am

1 stop6h 01m

Ontario

sø. 7/6

12:59 am-12:15 pm

1 stop8h 16m

$200

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

ti. 7/1

7:00 am-11:50 pm

1 stop18h 50m

Ontario

ma. 7/7

6:00 am-9:06 pm

1 stop13h 06m

$205

South BendOntario

SBN - ONT

SBNONT

South Bend/Michiana

fr. 8/15

12:25 pm-6:24 pm

1 stop8h 59m

Ontario

ma. 9/1

11:59 pm-11:55 am

1 stop8h 56m

$277

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

ti. 8/5

6:37 pm-12:13 am

1 stop8h 36m

Ontario

ti. 8/12

6:00 am-5:37 pm

1 stop8h 37m

$278

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

lø. 8/16

6:51 pm-10:40 pm

1 stop6h 49m

Ontario

on. 8/20

6:05 am-2:43 pm

1 stop5h 38m

$279

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

ti. 8/26

11:37 am-5:52 pm

2 stops9h 15m

Ontario

sø. 8/31

2:31 pm-11:54 pm

1 stop6h 23m

$284

South BendOntario

SBN - ONT

SBNONT

South Bend/Michiana

lø. 8/9

6:15 am-10:30 am

1 stop7h 15m

Ontario

ti. 8/19

11:45 am-11:12 pm

1 stop8h 27m

$287

DaytonOntario

DAY - ONT

DAYONT

Dayton

on. 8/27

7:05 am-11:52 am

1 stop7h 47m

Ontario

on. 9/3

10:54 am-8:20 pm

1 stop6h 26m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 60 results
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Best time to book a flight from Indiana to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Indiana 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 Indiana to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Indiana to Ontario (average of $246). Flying from Indiana to Ontario in March is currently the most expensive (average of $328). 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.

What is the cheapest time of day to fly from IN to ONT?

Find hourly flight availability from Indiana to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated juni 18, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Indiana to Ontario as you normally would.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 juni 18, 2025.
To help decide which airline to fly from Indiana to Ontario, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,504 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,809 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Indiana 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 Indiana?

    If you book a flight to Ontario from Indiana, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

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

    The cheapest airlines for a one-way flight from Indiana to Ontario are Frontier ($100), Alaska Airlines ($129), and Hawaiian Airlines ($139).

  • What are the most popular routes from Indiana to Ontario?

    The most popular flight routes from Indiana to Ontario are Chicago O'Hare Intl - Ontario, Cincinnati Cinci./N. Kentucky - Ontario and Indianapolis - Ontario.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Indiana 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 Indiana to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Indiana to Ontario (average of $246). Flying from Indiana to Ontario in March is currently the most expensive (average of $328). 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

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Alternative routes for Indiana to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Indiana to Ontario

Discover the top 5 airlines that operate flights from Indiana 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 juni 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$242FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$236Average$438FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$363FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$330Average$447FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$342Average$494FlexibilityNo cancel feeOn-time69%

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