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Delaware

$60+ Cheap flights from Illinois 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ILG
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Illinois to Delaware

Cheapest flights from Illinois to Delaware
Explore the most affordable flight options available from Illinois to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Trip.com deal was found by Cheapflights users on 12/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mMultiple Airlines
Mon 1/128:20 amPHL - ORD
1 stop13h 43mMultiple Airlines
Deal found 12/3$114
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/94:22 pmORD - PHL
1 stop16h 25mFrontier
Tue 12/166:37 pmPHL - ORD
1 stop20h 54mFrontier
Deal found 12/2$122
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:42 pmMDW - PHL
1 stop13h 08mFrontier
Tue 12/166:37 pmPHL - MDW
1 stop15h 09mFrontier
Deal found 12/2$136
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:00 amORD - PHL
1 stop6h 46mFrontier
Wed 12/106:32 pmPHL - ORD
1 stop28h 52mFrontier
Deal found 12/3$136
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:00 amORD - PHL
1 stop6h 46mFrontier
Mon 12/155:55 pmPHL - ORD
2 stops45h 36mFrontier
Deal found 12/3$139
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:00 amORD - PHL
1 stop6h 46mFrontier
Wed 12/173:45 pmPHL - ORD
1 stop24h 17mFrontier
Deal found 12/3$142
This Frontier deal was found by Cheapflights users on 12/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:00 amORD - PHL
1 stop7h 52mFrontier
Sun 1/1112:42 pmPHL - ORD
Nonstop2h 40mFrontier
Deal found 12/3$143
This Priceline deal was found by Cheapflights users on 12/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mMultiple Airlines
Wed 1/75:25 amPHL - ORD
1 stop9h 56mMultiple Airlines
Deal found 12/3$145
This Frontier deal was found by Cheapflights users on 12/4. 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.
Wed 12/178:00 amORD - PHL
1 stop7h 52mFrontier
Fri 1/91:59 pmPHL - ORD
Nonstop2h 40mFrontier
Deal found 12/4$147
This Frontier deal was found by Cheapflights users on 12/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:15 pmORD - PHL
Nonstop2h 15mFrontier
Wed 12/316:36 pmPHL - ORD
Nonstop2h 30mFrontier
Deal found 12/3$150
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:00 amORD - PHL
1 stop6h 46mFrontier
Thu 1/16:30 amPHL - ORD
1 stop5h 10mFrontier
Deal found 12/3$151
This Kiwi.com deal was found by Cheapflights users on 12/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/92:49 pmMDW - PHL
1 stop17h 58mFrontier
Fri 12/127:42 pmPHL - MDW
1 stop27h 48mFrontier
Deal found 12/1$163

Find flight deals from Illinois to Delaware

Keep the following information in mind while searching for Illinois to Delaware flight deals. Data was last updated December 4, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$106
(American Airlines)

One-way from

$60
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$223
Provider with most accurate pricing for Chicago (CHI)-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Philadelphia flights.
Search Deals
From Illinois to Delaware
Search Deals
One-way flight from Illinois to Delaware
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois 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 4, 2025.
Use the filters below to find and compare flights from Illinois to Delaware that are best for you.

Fly from

Illinois

Fly to

Delaware

Route

Depart

Return

Price

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Sun 1/25

4:43 pm-12:21 am

1 stop6h 38m

Philadelphia

Wed 1/28

1:40 pm-9:03 pm

1 stop8h 23m

$126

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Sun 1/25

11:20 am-2:31 pm

Nonstop2h 11m

Philadelphia

Wed 1/28

5:00 pm-6:30 pm

Nonstop2h 30m

$127

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Wed 1/21

2:30 pm-5:33 pm

Nonstop2h 03m

Philadelphia

Wed 1/28

10:30 am-2:25 pm

1 stop4h 55m

$131

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Tue 1/20

11:20 am-2:31 pm

Nonstop2h 11m

Philadelphia

Wed 1/28

7:45 pm-11:39 pm

1 stop4h 54m

$131

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Tue 2/10

8:56 am-12:07 pm

Nonstop2h 11m

Philadelphia

Thu 2/12

8:02 pm-11:43 pm

1 stop4h 41m

$137

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Thu 1/22

6:20 pm-9:36 pm

Nonstop2h 16m

Philadelphia

Sun 1/25

10:30 am-2:25 pm

1 stop4h 55m

$144

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Sat 1/10

11:20 am-2:31 pm

Nonstop2h 11m

Philadelphia

Sat 1/10

7:45 pm-11:39 pm

1 stop4h 54m

$144

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Fri 1/30

8:56 am-12:07 pm

Nonstop2h 11m

Philadelphia

Sun 2/1

6:30 am-7:59 am

Nonstop2h 29m

$145

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

Wed 1/21

5:30 pm-8:20 pm

Nonstop1h 50m

Philadelphia

Tue 1/27

2:10 pm-7:05 pm

1 stop5h 55m

$147

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

Sat 1/31

5:30 pm-8:20 pm

Nonstop1h 50m

Philadelphia

Tue 2/3

2:10 pm-7:05 pm

1 stop5h 55m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Delaware

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

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 4, 2025.
See what other customers who have flown with American Airlines from Illinois to Delaware have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,047 reviews

Boarding

7.5

Food

6.5

Entertainment

6.9

Crew

8.0

Comfort

7.2

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
American Airlines
7.2
Good
11,047 reviews
American Airlines
7.2
Good
11,047 reviews

Boarding

7.5

Food

6.5

Entertainment

6.9

Crew

8.0

Comfort

7.2

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.

Related info for your journey

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

    A quick flight from Illinois to Delaware can take about 1h 50m. United Airlines provides one of the quickest options available for as low as $147. The distance between Illinois and Delaware is about 666 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Qatar Airways, which is currently one of the cheapest options available, starting at $389. Etihad Airways flights start at $395 while deals on Turkish Airlines start at $404 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Illinois to Delaware

Discover the top airline that operate flights from Illinois to Delaware. 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$181Average$181FlexibilityNo cancel feeOn-time71%

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