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Delaware

$65+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ILG
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Ontario to Delaware

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Delaware (USDE). 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 enero 21, 2025.

Round-trip from

$130
(Frontier)

One-way from

$65
(Frontier)
From Ontario to Delaware
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One-way flight from Ontario to Delaware
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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 enero 21, 2025.

This Frontier deal was found by Cheapflights users on 1/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/158:29 pmONT - PHL
1 stop8h 09mFrontier
sáb. 2/228:00 amPHL - ONT
1 stop14h 09mFrontier
Deal found 1/20$130
This Delta deal was found by Cheapflights users on 1/21. 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.
sáb. 2/81:00 pmONT - PHL
1 stop6h 52mDelta
mié. 2/125:40 amPHL - ONT
1 stop9h 10mDelta
Deal found 1/21$345
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/85:10 amONT - PHL
2 stops9h 25mUnited Airlines
mié. 2/1212:15 pmPHL - ONT
2 stops11h 36mUnited Airlines
Deal found 1/21$355
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/19:32 amONT - PHL
2 stops8h 30mAmerican Airlines
sáb. 4/51:50 pmPHL - ONT
1 stop10h 09mAmerican Airlines
Deal found 1/20$371
This Southwest deal was found by Cheapflights users on 1/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/145:30 amONT - PHL
2 stops9h 15mSouthwest
sáb. 8/232:20 pmPHL - ONT
2 stops8h 45mSouthwest
Deal found 1/20$411
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/811:30 amONT - PHL
1 stop15h 31mAlaska Airlines
lun. 9/296:35 pmPHL - ONT
1 stop19h 04mAlaska Airlines
Deal found 1/20$416

Find flights from Ontario to Delaware within your budget

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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

sáb. 2/15

8:29 pm-7:38 am

1 stop8h 09m

Philadelphia

sáb. 2/22

8:00 am-7:09 pm

1 stop14h 09m

$130

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

sáb. 2/8

1:00 pm-10:52 pm

1 stop6h 52m

Philadelphia

mié. 2/12

5:40 am-11:50 am

1 stop9h 10m

$345

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

jue. 2/13

12:50 pm-11:47 pm

1 stop7h 57m

Philadelphia

sáb. 2/22

10:45 am-6:26 pm

2 stops10h 41m

$353

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

sáb. 2/8

5:10 am-5:35 pm

2 stops9h 25m

Philadelphia

mié. 2/12

12:15 pm-8:51 pm

2 stops11h 36m

$355

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

jue. 2/13

10:55 am-11:10 pm

2 stops9h 15m

Philadelphia

sáb. 2/22

2:00 pm-10:15 pm

2 stops11h 15m

$405

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

mié. 2/12

12:59 am-11:39 am

1 stop7h 40m

$65

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

sáb. 2/8

1:00 pm-12:49 am

1 stop8h 49m

$174

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

sáb. 2/8

10:56 am-11:34 pm

2 stops9h 38m

$179

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

mar. 2/25

5:05 am-3:46 pm

1 stop7h 41m

$217

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

mié. 3/12

8:40 am-9:50 pm

2 stops10h 10m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 11 results
1
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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.

Travel insights for flights from Ontario to Delaware

Get recent, data-driven insights about flights from Ontario to Delaware including ideal travel times, pricing trends, and more.

Rainfall in Delaware by month

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

In terms of precipitation, rainfall in Delaware ranges from 2.9 - 4.3 inches per month. July is typically the wettest month, when rainfall can reach 4.3 in. February is typically the driest time to visit Delaware when rainfall is around 2.9 in.

Temperature in Delaware by month

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

If weather is an important factor for your trip to Delaware, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Delaware

Get insights into the airlines that provide service to Delaware. 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 Delaware. Reviews last updated enero 21, 2025.
See what other customers who have flown with United Airlines, Frontier and Delta from Ontario to Delaware have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,984 reviews
Southwest
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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.

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

    The cheapest airlines for a one-way flight from Ontario to Delaware are Frontier ($65), Delta ($174), and American Airlines ($179).

  • 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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Alternative routes for Ontario to Delaware

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