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Delaware

$82+ Cheap flights from Ontario (ONT) to Delaware

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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ILG
ago. 23 — ago. 301
sáb. 8/23
sáb. 8/30
1 adult, Economy
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Cheap flight deals from Ontario to Delaware

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

Round-trip from

$164
(CheapOair)

One-way from

$82
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$303
From Ontario to Delaware
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One-way flight from Ontario to Delaware
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Highest demand for flights based on searches. 10% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Ontario to Delaware

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

This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/258:59 pmONT - PHL
1 stop24h 58mFrontier
lun. 9/296:45 amPHL - ONT
1 stop16h 09mFrontier
Deal found 8/17$164
This Mytrip deal was found by Cheapflights users on 8/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/212:59 amONT - PHL
1 stop24h 55mFrontier
jue. 9/48:10 amPHL - ONT
1 stop10h 19mFrontier
Deal found 8/18$165
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/138:59 pmONT - PHL
1 stop24h 58mFrontier
sáb. 9/206:45 amPHL - ONT
1 stop16h 09mFrontier
Deal found 8/17$175
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/94:17 pmONT - PHL
1 stop30h 24mFrontier
vie. 10/176:42 amPHL - ONT
1 stop20h 08mFrontier
Deal found 8/17$185
This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/77:15 pmONT - PHL
1 stop18h 17mFrontier
jue. 9/118:10 amPHL - ONT
1 stop10h 19mFrontier
Deal found 8/17$188
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/308:59 pmONT - PHL
1 stop23h 44mFrontier
sáb. 10/46:45 amPHL - ONT
1 stop16h 09mFrontier
Deal found 8/18$192
This CheapOair deal was found by Cheapflights users on 8/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/236:53 amONT - PHL
1 stop19h 26mFrontier
lun. 10/276:42 amPHL - ONT
1 stop20h 08mFrontier
Deal found 8/16$195
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/286:00 amONT - PHL
1 stop20h 45mFrontier
vie. 9/56:45 amPHL - ONT
1 stop16h 09mFrontier
Deal found 8/17$197
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/188:59 pmONT - PHL
1 stop24h 58mFrontier
lun. 9/226:45 amPHL - ONT
1 stop16h 09mFrontier
Deal found 8/17$199
This Frontier deal was found by Cheapflights users on 8/17. 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.
jue. 11/66:53 amONT - PHL
2 stops15h 01mFrontier
lun. 11/106:19 amPHL - ONT
1 stop7h 51mFrontier
Deal found 8/17$200
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/113:43 pmONT - PHL
2 stops16h 13mFrontier
jue. 9/258:10 amPHL - ONT
1 stop10h 19mFrontier
Deal found 8/18$201
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/118:59 pmONT - PHL
1 stop24h 58mFrontier
lun. 9/156:45 amPHL - ONT
1 stop16h 09mFrontier
Deal found 8/18$202

Cheapflights Fare Finder

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

Fly from

Ontario

Fly to

Delaware

Route

Depart

Return

Price

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

mié. 9/10

8:59 pm-12:57 am

1 stop24h 58m

Philadelphia

vie. 9/12

6:45 am-7:54 pm

1 stop16h 09m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

vie. 11/14

4:05 pm-4:49 am

1 stop9h 44m

Philadelphia

lun. 11/17

6:19 am-11:10 am

1 stop7h 51m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

vie. 10/10

11:53 am-5:19 am

1 stop14h 26m

Philadelphia

sáb. 10/18

6:42 am-9:35 am

1 stop29h 53m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

jue. 11/6

6:53 am-4:49 am

1 stop18h 56m

Philadelphia

sáb. 11/15

6:19 am-11:50 pm

1 stop20h 31m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

mié. 9/3

12:59 am-12:57 am

1 stop20h 58m

Philadelphia

sáb. 9/27

6:45 am-7:23 am

1 stop27h 38m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

mié. 11/5

6:53 am-4:49 am

1 stop18h 56m

Philadelphia

sáb. 11/15

6:19 am-11:10 am

1 stop7h 51m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

jue. 9/11

8:59 pm-12:57 am

1 stop24h 58m

Philadelphia

jue. 9/25

6:45 am-7:53 am

1 stop28h 08m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

jue. 11/6

12:05 pm-4:49 am

1 stop13h 44m

Philadelphia

lun. 11/10

6:19 am-11:10 am

1 stop7h 51m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

jue. 11/13

12:05 pm-4:49 am

1 stop13h 44m

Philadelphia

sáb. 11/15

6:19 am-11:50 pm

1 stop20h 31m

$164

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

jue. 9/25

8:59 pm-12:57 am

1 stop24h 58m

Philadelphia

lun. 9/29

6:45 am-7:54 pm

1 stop16h 09m

$164

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 21 results
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Best time to book a flight from Ontario to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Ontario 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 Ontario to Delaware
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Delaware. 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 from for flights from Ontario to Delaware?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Delaware from Ontario.

  • How long is the flight from Ontario to Delaware?

    For as low as $164, Frontier can have you in Delaware from Ontario in 24h 58m. The distance between Ontario and Delaware is about 2349 mi.

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

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

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

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

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

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

See more FAQs

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