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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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — ONT
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$309
(Delta)

One-way from

$189
(Delta)

Popular in

July

Cheapest in

April

Average price

$358
Provider with most accurate pricing for Dayton-Ontario flight deals.
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Provider most trusted by Cheapflights users for Dayton-Ontario flights.
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From Dayton to Ontario
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One-way flight from Dayton to Ontario
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Highest demand for flights based on searches. 2% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 15, 2026.

This Delta deal was found by Cheapflights users on 1/14. 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.
Tue 3/106:00 am
DAY
-
ONT
1 stop8h 40m
Delta
Mon 3/1610:25 pm
ONT
-
DAY
1 stop9h 21m
Delta
Deal found 1/14$309
This Delta deal was found by Cheapflights users on 1/14. 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.
Tue 3/172:35 pm
DAY
-
ONT
2 stops12h 15m
Delta
Tue 3/2410:25 pm
ONT
-
DAY
1 stop9h 21m
Delta
Deal found 1/14$314
This Delta deal was found by Cheapflights users on 1/13. 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 2/112:37 pm
DAY
-
ONT
1 stop9h 28m
Delta
Tue 2/2410:20 pm
ONT
-
DAY
1 stop9h 35m
Delta
Deal found 1/13$329
This Delta deal was found by Cheapflights users on 1/14. 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.
Mon 3/92:35 pm
DAY
-
ONT
1 stop9h 29m
Delta
Tue 3/1710:25 pm
ONT
-
DAY
1 stop9h 21m
Delta
Deal found 1/14$334
This Delta deal was found by Cheapflights users on 1/13. 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.
Tue 2/172:39 pm
DAY
-
ONT
1 stop9h 26m
Delta
Wed 2/251:15 pm
ONT
-
DAY
1 stop6h 28m
Delta
Deal found 1/13$354
This Delta deal was found by Cheapflights users on 1/13. 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 1/282:37 pm
DAY
-
ONT
1 stop9h 28m
Delta
Sun 2/110:30 pm
ONT
-
DAY
1 stop9h 20m
Delta
Deal found 1/13$379
This American Airlines deal was found by Cheapflights users on 1/13. 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 1/2810:16 am
DAY
-
ONT
2 stops11h 04m
American Airlines
Sun 2/111:59 pm
ONT
-
DAY
1 stop9h 05m
American Airlines
Deal found 1/13$384
This United Airlines deal was found by Cheapflights users on 1/14. 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 4/1511:32 am
DAY
-
ONT
2 stops12h 04m
United Airlines
Wed 4/2211:05 am
ONT
-
DAY
2 stops9h 39m
United Airlines
Deal found 1/14$390
This Delta deal was found by Cheapflights users on 1/14. 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.
Thu 3/126:00 am
DAY
-
ONT
1 stop8h 40m
Delta
Tue 3/1710:25 pm
ONT
-
DAY
1 stop9h 21m
Delta
Deal found 1/14$392
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Sat 3/146:00 pm
DAY
-
ONT
1 stop7h 18m
United Airlines
Wed 3/181:50 pm
ONT
-
DAY
1 stop5h 40m
United Airlines
Deal found 1/14$399
This United Airlines deal was found by Cheapflights users on 1/13. 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 5/139:00 am
DAY
-
ONT
1 stop6h 37m
United Airlines
Sat 5/166:00 am
ONT
-
DAY
2 stops13h 31m
United Airlines
Deal found 1/13$404
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Tue 3/1710:50 am
DAY
-
ONT
2 stops13h 00m
United Airlines
Tue 3/246:00 am
ONT
-
DAY
2 stops11h 21m
United Airlines
Deal found 1/14$410

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 January 15, 2026.
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

Tue 3/17

6:00 am-11:40 am

1 stop8h 40m

Ontario

Tue 3/24

10:25 pm-10:46 am

1 stop9h 21m

$309

DaytonOntario

DAY - ONT

DAYONT

Dayton

Tue 3/10

6:00 am-11:40 am

1 stop8h 40m

Ontario

Tue 3/17

12:50 pm-12:14 am

1 stop8h 24m

$309

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 3/11

2:35 pm-9:04 pm

1 stop9h 29m

Ontario

Tue 3/17

10:25 pm-10:46 am

1 stop9h 21m

$309

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 4/15

11:32 am-10:45 pm

2 stops14h 13m

Ontario

Wed 4/22

1:34 pm-10:45 pm

1 stop6h 11m

$314

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 2/11

2:37 pm-9:05 pm

1 stop9h 28m

Ontario

Thu 2/26

10:20 pm-10:55 am

1 stop9h 35m

$329

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 2/11

2:37 pm-9:05 pm

1 stop9h 28m

Ontario

Tue 2/24

10:20 pm-10:55 am

1 stop9h 35m

$329

DaytonOntario

DAY - ONT

DAYONT

Dayton

Sat 2/14

4:00 pm-9:05 pm

1 stop8h 05m

Ontario

Thu 2/26

10:20 pm-10:55 am

1 stop9h 35m

$329

DaytonOntario

DAY - ONT

DAYONT

Dayton

Mon 3/9

2:35 pm-9:04 pm

1 stop9h 29m

Ontario

Mon 3/16

10:25 pm-10:46 am

1 stop9h 21m

$334

DaytonOntario

DAY - ONT

DAYONT

Dayton

Tue 2/17

2:39 pm-9:05 pm

1 stop9h 26m

Ontario

Wed 2/25

1:15 pm-10:43 pm

1 stop6h 28m

$354

DaytonOntario

DAY - ONT

DAYONT

Dayton

Tue 2/17

2:39 pm-9:05 pm

1 stop9h 26m

Ontario

Tue 2/24

10:20 pm-10:55 am

1 stop9h 35m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 22 results
1
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3

Compare providers for flights from Dayton 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 Dayton to Ontario in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 Dayton-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Dayton-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Dayton-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dayton-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Dayton-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 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, October is the cheapest month in which you can book a flight from Dayton to Ontario (average of $106). Flying from Dayton to Ontario in April is currently the most expensive (average of $166). 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 January 15, 2026.
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
7.9
Good
8,048 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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
7.9
Good
8,048 reviews
Delta
7.9
Good
8,048 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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
9,163 reviews
Delta
7.9
Good
8,048 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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
11,129 reviews
Delta
7.9
Good
8,048 reviews

Boarding

8.1

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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 United Airlines can get you from Dayton to Ontario in just under 8h 40m. Your travel time can differ by up to 5h 33m. 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 38% lower than the current average price of a flight leaving 3 months from now.

  • 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, October is the cheapest month in which you can book a flight from Dayton to Ontario (average of $106). Flying from Dayton to Ontario in April is currently the most expensive (average of $166). 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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$254Average$348FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$288Average$357FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$453FlexibilityNo cancel feeOn-time71%

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