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$299+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — ONT
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap 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 July 23, 2026.

This United Airlines deal was found by Cheapflights users on 7/18. 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 8/159:00 am
DAY
-
ONT
1 stop6h 50m
United Airlines
Sat 8/221:18 pm
ONT
-
DAY
1 stop6h 27m
United Airlines
Deal found 7/18$349
This Delta deal was found by Cheapflights users on 7/21. 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 9/16:00 am
DAY
-
ONT
1 stop7h 42m
Delta
Tue 9/157:05 am
ONT
-
DAY
1 stop7h 49m
Delta
Deal found 7/21$359
This Delta deal was found by Cheapflights users on 7/19. 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 12/232:55 pm
DAY
-
ONT
1 stop10h 19m
Delta
Tue 12/2910:59 pm
ONT
-
DAY
1 stop8h 28m
Delta
Deal found 7/19$372
This Delta deal was found by Cheapflights users on 7/19. 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 12/246:00 am
DAY
-
ONT
1 stop8h 27m
Delta
Thu 12/3110:59 pm
ONT
-
DAY
1 stop8h 28m
Delta
Deal found 7/19$374
This Delta deal was found by Cheapflights users on 7/21. 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.
Sat 8/296:00 am
DAY
-
ONT
1 stop7h 42m
Delta
Sat 9/1912:17 pm
ONT
-
DAY
1 stop7h 00m
Delta
Deal found 7/21$382
This Delta deal was found by Cheapflights users on 7/20. 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 8/611:26 am
DAY
-
ONT
1 stop10h 04m
Delta
Thu 8/1312:00 pm
ONT
-
DAY
1 stop8h 56m
Delta
Deal found 7/20$384
This American Airlines deal was found by Cheapflights users on 7/22. 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 9/305:34 am
DAY
-
ONT
2 stops9h 32m
American Airlines
Wed 10/712:43 pm
ONT
-
DAY
1 stop7h 51m
American Airlines
Deal found 7/22$387
This Delta deal was found by Cheapflights users on 7/19. 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 12/232:55 pm
DAY
-
ONT
1 stop10h 19m
Delta
Wed 12/3010:59 pm
ONT
-
DAY
1 stop8h 28m
Delta
Deal found 7/19$395
This Delta deal was found by Cheapflights users on 7/19. 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 12/246:00 am
DAY
-
ONT
1 stop8h 27m
Delta
Wed 12/3010:59 pm
ONT
-
DAY
1 stop8h 28m
Delta
Deal found 7/19$397
This Delta deal was found by Cheapflights users on 7/18. 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.
Fri 10/306:00 am
DAY
-
ONT
1 stop8h 08m
Delta
Tue 11/312:18 pm
ONT
-
DAY
1 stop6h 44m
Delta
Deal found 7/18$404
This Delta deal was found by Cheapflights users on 7/22. 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 12/166:00 am
DAY
-
ONT
1 stop8h 27m
Delta
Wed 1/67:00 am
ONT
-
DAY
1 stop7h 49m
Delta
Deal found 7/22$414

Find 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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(Delta)

One-way from

$344
(United Airlines)

Popular in

March

Cheapest in

September

Average price

$594
Provider with most accurate pricing for Dayton-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dayton-Ontario flights.
Search Deals
From Dayton to Ontario
Search Deals
One-way flight from Dayton to Ontario
Search Deals
Highest demand for flights based on searches. 33% potential increase in price ($262 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 23, 2026.
Use the filters below to find and compare flights from Dayton to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DaytonOntario

DAY - ONT

DAYONT

Dayton

Sat 8/15

9:00 am-12:50 pm

1 stop6h 50m

Ontario

Sat 8/22

1:18 pm-10:45 pm

1 stop6h 27m

$349

DaytonOntario

DAY - ONT

DAYONT

Dayton

Fri 9/4

4:17 pm-9:52 pm

1 stop8h 35m

Ontario

Tue 9/15

7:05 am-5:54 pm

1 stop7h 49m

$359

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 9/2

6:00 am-10:42 am

1 stop7h 42m

Ontario

Tue 9/15

12:17 pm-11:14 pm

1 stop7h 57m

$359

DaytonOntario

DAY - ONT

DAYONT

Dayton

Thu 9/3

6:00 am-10:42 am

1 stop7h 42m

Ontario

Sat 9/19

12:17 pm-10:17 pm

1 stop7h 00m

$359

DaytonOntario

DAY - ONT

DAYONT

Dayton

Thu 10/15

3:25 pm-10:01 pm

1 stop9h 36m

Ontario

Sun 10/18

11:15 pm-10:38 am

1 stop8h 23m

$374

DaytonOntario

DAY - ONT

DAYONT

Dayton

Tue 9/1

6:00 am-10:42 am

1 stop7h 42m

Ontario

Fri 9/18

12:17 pm-11:14 pm

1 stop7h 57m

$448

DaytonOntario

DAY - ONT

DAYONT

Dayton

Wed 9/2

6:00 am-10:42 am

1 stop7h 42m

Ontario

Fri 9/18

12:17 pm-11:14 pm

1 stop7h 57m

$448

DaytonOntario

DAY - ONT

DAYONT

Dayton

Mon 8/31

6:11 pm-10:35 pm

1 stop7h 24m

Ontario

Sat 9/19

1:18 pm-10:45 pm

1 stop6h 27m

$449
Cheapest one-way

DaytonOntario

DAY - ONT

DAYONT

Dayton

Mon 10/5

6:00 am-11:05 am

1 stop8h 05m

$330

DaytonOntario

DAY - ONT

DAYONT

Dayton

Sun 11/22

1:45 pm-6:29 pm

1 stop7h 44m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Dayton-Ontario flight deals on Cheapflights vs. FlightHub >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 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 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, September is the cheapest month in which you can book a flight from Dayton to Ontario (average of $349). Flying from Dayton to Ontario in March is currently the most expensive (average of $1,013). 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.

How much does it cost to fly round-trip from Dayton to Ontario?

Airfare is below average for this route at the moment.

Dayton to Ontario flights typically cost between $426 and $603 in October.
The cheapest round-trip price found within the last 5 days was $359 on Delta (Oct 15-Oct 18).

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 July 23, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican 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
7.8
Good
8,479 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.8

Boarding

8.1

Comfort

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
7.8
Good
8,479 reviews
Delta
7.8
Good
8,479 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.8

Boarding

8.1

Comfort

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
10,024 reviews
Delta
7.8
Good
8,479 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.8

Boarding

8.1

Comfort

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
7.1
Good
11,832 reviews
Delta
7.8
Good
8,479 reviews

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.8

Boarding

8.1

Comfort

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?

    United Airlines and Delta can get you from Dayton to Ontario in just under 6h 50m. Your travel time can differ by up to 1h 45m. 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 United Airlines is currently your cheapest option to Ontario, with prices starting at $268. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $309 and $339, respectively. United Airlines is priced at 49% 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, September is the cheapest month in which you can book a flight from Dayton to Ontario (average of $349). Flying from Dayton to Ontario in March is currently the most expensive (average of $1,013). 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 Dayton to Ontario

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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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$268Average$393FlexibilityNo cancel feeOn-time69%
DeltaCheapest$309Average$378FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$339Average$483FlexibilityNo cancel feeOn-time71%

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