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$189+ Cheap flights from Dayton to Ontario (DAY - 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Dayton to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Dayton (DAY) 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 September 11, 2025.

Round-trip from

$289
(Delta)

One-way from

$189
(Delta)

Popular in

July

Cheapest in

April

Average price

$385
From Dayton to Ontario
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One-way flight from Dayton to Ontario
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dayton to Ontario

Cheapest flights from Dayton to Ontario
Explore the most affordable flight options available from Dayton to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Delta deal was found by Cheapflights users on 9/11. 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.
Wed 11/53:17 pmDAY - ONT
1 stop10h 05mDelta
Tue 11/1110:25 pmONT - DAY
1 stop9h 09mDelta
Deal found 9/11$289
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/187:08 amDAY - ONT
2 stops11h 16mAmerican Airlines
Sat 11/110:09 amONT - DAY
2 stops10h 50mAmerican Airlines
Deal found 9/10$299
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 9/256:06 amDAY - ONT
1 stop6h 59mAmerican Airlines
Mon 9/2912:45 pmONT - DAY
1 stop7h 52mAmerican Airlines
Deal found 9/10$339
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:55 pmDAY - ONT
1 stop7h 35mUnited Airlines
Mon 9/296:36 pmONT - DAY
2 stops12h 14mUnited Airlines
Deal found 9/10$344
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/57:06 amDAY - ONT
2 stops11h 55mAmerican Airlines
Tue 11/119:59 amONT - DAY
2 stops11h 00mAmerican Airlines
Deal found 9/10$349
This Delta deal was found by Cheapflights users on 9/11. 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.
Wed 10/11:16 pmDAY - ONT
1 stop8h 59mDelta
Fri 10/310:00 pmONT - DAY
1 stop9h 22mDelta
Deal found 9/11$377
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/19:25 amDAY - ONT
1 stop6h 26mUnited Airlines
Sat 10/41:15 pmONT - DAY
1 stop5h 49mUnited Airlines
Deal found 9/9$379
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 9/126:06 amDAY - ONT
1 stop6h 57mAmerican Airlines
Wed 12/3111:59 pmONT - DAY
1 stop8h 36mAmerican Airlines
Deal found 9/11$389
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/129:00 amDAY - ONT
2 stops11h 29mUnited Airlines
Wed 12/311:40 pmONT - DAY
1 stop5h 42mUnited Airlines
Deal found 9/11$394

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dayton 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 September 11, 2025.
Use the filters below to find and compare flights from Dayton to Ontario that are best for you.

Fly from

Dayton

Fly to

Ontario

Route

Depart

Return

Price

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 11/5

3:17 pm-10:22 pm

1 stop10h 05m

Ontario

Tue 11/11

10:25 pm-10:34 am

1 stop9h 09m

$289

DaytonOntario

DAY - ONT

DAYONT

Dayton

Sat 10/18

1:55 pm-8:07 pm

1 stop9h 12m

Ontario

Sat 11/1

10:57 am-11:16 pm

1 stop9h 19m

$289

DaytonOntario

DAY - ONT

DAYONT

Dayton

Sat 2/28

2:53 pm-9:14 pm

1 stop9h 21m

Ontario

Tue 3/3

10:30 pm-10:38 am

1 stop9h 08m

$314

DaytonOntario

DAY - ONT

DAYONT

Dayton

Thu 9/25

5:55 pm-10:30 pm

1 stop7h 35m

Ontario

Mon 9/29

6:36 pm-9:50 am

2 stops12h 14m

$344

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 11/5

7:06 am-4:01 pm

2 stops11h 55m

Ontario

Tue 11/11

9:59 am-11:59 pm

2 stops11h 00m

$349

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 10/1

1:16 pm-7:15 pm

1 stop8h 59m

Ontario

Fri 10/3

10:00 pm-10:22 am

1 stop9h 22m

$377

DaytonOntario

DAY - ONT

DAYONT

Dayton

Sat 10/25

1:38 pm-6:06 pm

1 stop7h 28m

Ontario

Sat 11/1

7:00 am-5:06 pm

1 stop7h 06m

$379

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 12/17

6:34 pm-11:03 pm

1 stop7h 29m

$189

DaytonOntario

DAY - ONT

DAYONT

Dayton

Sat 10/25

1:55 pm-8:07 pm

1 stop9h 12m

$189

DaytonOntario

DAY - ONT

DAYONT

Dayton

Fri 10/24

1:29 pm-7:19 pm

1 stop8h 50m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 results
1
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Best time to book a flight from Dayton to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Dayton to Ontario (average of $246). Flying from Dayton 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 DAY to ONT?

Find hourly flight availability from Dayton 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 September 11, 2025.

One of the essential ways to save on airfare from Dayton to Ontario is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 27% on airfare.

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 September 11, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Dayton to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

  • How long is the flight from Dayton to Ontario?

    Delta and American Airlines can get you from Dayton to Ontario in just under 9h 12m. Your travel time can differ by up to 53m. Dayton and Ontario are separated by a distance of 1873 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Flying on Delta is currently your cheapest option to Ontario, with prices starting at $254. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $288 and $288, respectively. Delta is priced at 41% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $189. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Dayton to Ontario for a low price.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Dayton to Ontario (average of $246). Flying from Dayton 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.

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Top 3 airlines flying from Dayton to Ontario

Discover the top 3 airlines that operate flights from Dayton 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$254Average$378FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$288Average$383FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$426FlexibilityNo cancel feeOn-time71%

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