HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Delaware

$70+ 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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ILG
Nov 10 — Nov 171
1 adult
Sun 11/10
Sun 11/17
We work with more than 300 partners to bring you better travel deals

...and more

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.

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 November 5, 2024.

This Frontier deal was found by Cheapflights users on 11/4. 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.
Fri 11/156:30 amONT - PHL
1 stop8h 43mFrontier
Tue 11/191:55 pmPHL - ONT
1 stop11h 22mFrontier
Deal found 11/4$214
This Delta deal was found by Cheapflights users on 11/4. 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 12/712:05 pmONT - PHL
1 stop9h 50mDelta
Wed 12/115:30 amPHL - ONT
1 stop8h 31mDelta
Deal found 11/4$376
This eDestinos deal was found by Cheapflights users on 11/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/275:45 amONT - PHL
2 stops13h 16mMultiple Airlines
Sun 12/292:45 pmPHL - ONT
2 stops23h 15mMultiple Airlines
Deal found 11/3$385
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Sat 12/146:10 amONT - PHL
2 stops8h 43mAmerican Airlines
Mon 1/2011:50 amPHL - ONT
2 stops9h 34mAmerican Airlines
Deal found 11/4$406
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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.
Thu 12/56:00 amONT - PHL
1 stop8h 50mAlaska Airlines
Thu 12/126:50 pmPHL - ONT
2 stops26h 59mAlaska Airlines
Deal found 11/4$415
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Sun 11/246:28 pmONT - PHL
1 stop9h 29mUnited Airlines
Thu 11/286:15 amPHL - ONT
2 stops11h 29mUnited Airlines
Deal found 11/4$451
This Southwest deal was found by Cheapflights users on 11/4. 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.
Thu 12/511:30 amONT - PHL
2 stops8h 50mSouthwest
Thu 12/1212:55 pmPHL - ONT
2 stops10h 50mSouthwest
Deal found 11/4$456
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 12/126:20 amONT - SBY
1 stop6h 58mAmerican Airlines
Sun 12/1511:58 amSBY - ONT
2 stops13h 15mAmerican Airlines
Deal found 11/5$735

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 2,554,862 searches. Data last updated November 5, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 1/9

6:45 am-8:48 pm

1 stop11h 03m

$70

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sun 11/17

10:58 pm-5:24 am

1 stop27h 26m

$146

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 11/23

5:00 pm-5:50 am

1 stop9h 50m

$173

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 2/4

11:14 am-5:32 pm

2 stops27h 18m

$193

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 1/1

6:30 pm-5:33 am

1 stop8h 03m

$223

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 11/19

11:45 am-11:20 pm

1 stop8h 35m

$256

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sun 12/1

11:59 pm-11:24 am

1 stop8h 25m

$483

OntarioSalisbury

ONT - SBY

ONTSBY

Ontario

Thu 12/5

6:00 am-8:34 pm

2 stops11h 34m

$440

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Fri 11/15

6:30 am-6:13 pm

1 stop8h 43m

Philadelphia

Tue 11/19

1:55 pm-10:17 pm

1 stop11h 22m

$214

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 12/7

12:05 pm-12:55 am

1 stop9h 50m

Philadelphia

Wed 12/11

5:30 am-11:01 am

1 stop8h 31m

$376

Flights are sorted by cheapest first

Deals found on 11/4

Showing 1-10 of 16 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 November 5, 2024.
See what other customers who have flown with Delta, Alaska Airlines and United 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
5,082 reviews

Food

7.2

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

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
5,082 reviews
Southwest
8.1
Very good
5,082 reviews

Food

7.2

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

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
9,421 reviews
Southwest
8.1
Very good
5,082 reviews

Food

7.2

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

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
8,830 reviews
Southwest
8.1
Very good
5,082 reviews

Food

7.2

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

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
9,215 reviews
Southwest
8.1
Very good
5,082 reviews

Food

7.2

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

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
5,082 reviews

Food

7.2

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

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.

  • Can I find flights from Ontario to Delaware for under $300 on Cheapflights?

    Yes, there are multiple flights from Ontario to Delaware for under $300. The cheapest flight booked recently is on Frontier for just $214, but on average you can expect to pay $383.

  • Are there last-minute flights available from Ontario to Delaware for under $300?

    There are currently 5+ open flights from Ontario to Delaware within the next 7 days for less than $300.

  • 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 ($70), Delta ($173), and Alaska Airlines ($193).

  • What does ONT to ILG mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to Greater Wilmington Airport flight would often be abbreviated as a ONT to ILG flight.

  • Can I find deals for flights from Ontario to Delaware that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Delaware flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Delaware with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Delaware flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Ontario to Delaware that allow pets onboard?

    Many airlines flying from Ontario to Delaware offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Delaware?

    Yes, you can often find last-minute deals on Ontario to Delaware flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Delaware flight deals updated?

    The Ontario to Delaware flight deals you see on this page were last updated on 11/5.

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
San Francisco to John F Kennedy Intl flights
Los Angeles to LaGuardia flights
Los Angeles to Honolulu flights
San Francisco to Newark flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to Seattle flights
Los Angeles to O'Hare Intl flights
Los Angeles to Miami flights
San Francisco to Las Vegas flights
San Francisco to Seattle flights
Los Angeles to Orlando flights
Los Angeles to Las Vegas flights
Ontario to Seattle flights
Santa Ana to Newark flights
San Francisco to LaGuardia flights
San Francisco to Honolulu flights
San Francisco to Los Angeles flights
Ontario to Dallas/Fort Worth flights
Santa Ana to Las Vegas flights
Los Angeles to San Francisco flights
Los Angeles to Dulles Intl flights
Burbank to Las Vegas flights
Los Angeles to Reagan-National flights
San Diego to John F Kennedy Intl flights
San Francisco to O'Hare Intl flights
Los Angeles to Fort Lauderdale flights
San Francisco to Dallas/Fort Worth flights
Los Angeles to Boston flights
Los Angeles to Hobby flights
Oakland to Burbank flights
Burbank to Newark flights
Oakland to Santa Ana flights
Los Angeles to San Jose flights
Los Angeles to Baltimore flights
Santa Ana to Seattle flights
San Jose to Los Angeles flights
San Francisco to Miami flights
Los Angeles to Atlanta flights
Los Angeles to New Orleans flights
San Jose to Las Vegas flights
Los Angeles to Denver flights
Los Angeles to Sky Harbor Intl flights
Burbank to Oakland flights
San Diego to Newark flights
Burbank to LaGuardia flights
San Francisco to Dulles Intl flights
Ontario to John F Kennedy Intl flights
San Diego to Seattle 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.
View all available airlines