HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Delaware

$64+ 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
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Delaware with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 December 18, 2024.

Round-trip from

$128
(Frontier)

One-way from

$64
(Frontier)
From Ontario to Delaware
Search Deals
One-way flight from Ontario to Delaware
Search Deals

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 December 18, 2024.

This Trip.com deal was found by Cheapflights users on 12/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2410:39 pmONT - PHL
1 stop28h 21mFrontier
Sat 1/47:30 amPHL - ONT
1 stop27h 36mFrontier
Deal found 12/17$196
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:55 pmONT - PHL
1 stop8h 57mDelta
Wed 1/86:55 amPHL - ONT
1 stop8h 31mDelta
Deal found 12/17$351
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/302:50 pmONT - PHL
1 stop7h 05mAmerican Airlines
Fri 1/103:55 pmPHL - ONT
1 stop9h 50mAmerican Airlines
Deal found 12/16$491
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:05 amONT - PHL
1 stop7h 20mUnited Airlines
Fri 1/311:20 amPHL - ONT
2 stops12h 29mUnited Airlines
Deal found 12/17$541
This Travelocity deal was found by Cheapflights users on 12/17. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/308:32 pmONT - PHL
2 stops10h 01mMultiple Airlines
Fri 1/37:45 amPHL - ONT
1 stop8h 15mMultiple Airlines
Deal found 12/17$629
This American Airlines deal was found by Cheapflights users on 12/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2910:18 pmONT - SBY
1 stop10h 09mAmerican Airlines
Sun 1/54:54 pmSBY - ONT
2 stops10h 03mAmerican Airlines
Deal found 12/18$1,139
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/296:00 amONT - SBY
2 stops26h 38mAlaska Airlines
Sun 1/511:55 amSBY - ONT
3 stops25h 39mAlaska Airlines
Deal found 12/18$1,411

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 2/12

12:59 am-11:39 am

1 stop7h 40m

Philadelphia

Sat 2/22

8:00 am-7:09 pm

1 stop14h 09m

$128

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Fri 1/17

6:34 pm-7:59 am

2 stops34h 25m

Philadelphia

Mon 1/27

6:08 am-11:47 pm

3 stops44h 39m

$251

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Mon 1/13

12:48 pm-11:59 pm

1 stop8h 11m

Philadelphia

Tue 1/14

1:43 pm-6:24 pm

1 stop7h 41m

$371

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Fri 1/17

6:00 am-5:28 pm

1 stop8h 28m

Philadelphia

Wed 1/22

3:55 pm-10:52 pm

1 stop9h 57m

$381

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Mon 1/13

9:20 am-9:05 pm

2 stops8h 45m

Philadelphia

Tue 1/14

9:45 am-5:00 pm

2 stops10h 15m

$411

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 1/23

5:10 am-5:35 pm

2 stops9h 25m

Philadelphia

Sun 1/26

10:10 am-8:29 pm

2 stops13h 19m

$416

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Mon 1/27

7:01 pm-5:32 pm

1 stop19h 31m

Philadelphia

Fri 1/31

6:32 pm-6:12 pm

1 stop26h 40m

$442

OntarioSalisbury

ONT - SBY

ONTSBY

Ontario

Sun 12/29

10:18 pm-11:27 am

1 stop10h 09m

Salisbury-Ocean City

Sun 1/5

4:54 pm-11:57 pm

2 stops10h 03m

$1,139

OntarioSalisbury

ONT - SBY

ONTSBY

Ontario

Sun 12/29

6:00 am-11:38 am

2 stops26h 38m

Salisbury-Ocean City

Sun 1/5

11:55 am-10:34 am

3 stops25h 39m

$1,411

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 2/12

12:59 am-11:39 am

1 stop7h 40m

$64

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 15 results
1
2

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 December 18, 2024.
See what other customers who have flown with Frontier, Delta and Alaska Airlines 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
4,848 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

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
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

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
9,554 reviews
Southwest
8.1
Very good
4,848 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

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
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

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
9,055 reviews
Southwest
8.1
Very good
4,848 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

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
4,848 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

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 ($64), American Airlines ($173), and Delta ($198).

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Los Angeles to Newark flights
Los Angeles to Honolulu flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Seattle flights
San Francisco to Las Vegas flights
Los Angeles to LaGuardia flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to Miami flights
Los Angeles to Las Vegas flights
San Francisco to Los Angeles flights
Los Angeles to Orlando flights
Los Angeles to O'Hare Intl flights
Santa Ana to Las Vegas flights
San Francisco to Newark flights
Los Angeles to San Francisco flights
Los Angeles to Hobby flights
San Francisco to Honolulu flights
San Francisco to Seattle flights
Burbank to Las Vegas flights
San Jose to Las Vegas flights
Los Angeles to Fort Lauderdale flights
San Francisco to Dallas/Fort Worth flights
Oakland to Las Vegas flights
Los Angeles to Reagan-National flights
Ontario to Dallas/Fort Worth flights
Los Angeles to Boston flights
San Francisco to Miami flights
Santa Ana to Newark flights
Los Angeles to George Bush Intcntl flights
Ontario to Seattle flights
Los Angeles to Baltimore flights
Los Angeles to Atlanta flights
San Francisco to LaGuardia flights
Los Angeles to New Orleans flights
Burbank to Newark flights
San Jose to Los Angeles flights
Los Angeles to San Jose flights
Los Angeles to Portland flights
Santa Ana to Seattle flights
Los Angeles to Salt Lake City flights
Los Angeles to Dulles Intl flights
Oakland to Los Angeles flights
San Diego to John F Kennedy Intl flights
Burbank to LaGuardia flights
Oakland to Santa Ana flights
Los Angeles to Sky Harbor Intl flights
San Francisco to Sky Harbor Intl flights
Los Angeles to Denver flights
Santa Ana to LaGuardia flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.