Delaware

$85+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ILG
abr. 27 — may. 41
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Cheap flight deals from Illinois to Delaware

Keep the following information in mind while searching for Illinois to Delaware flight deals. Data was last updated abril 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$161
(Cheapflightsfares)

One-way from

$85
(Cheapflightsfares)

Popular in

March

Cheapest in

August

Average price

$268
Provider with most accurate pricing for Chicago (CHI)-Philadelphia flight deals.
Provider most trusted by Cheapflights users for Chicago (CHI)-Philadelphia flights.
From Illinois to Delaware
One-way flight from Illinois to Delaware
Highest demand for flights based on searches. 32% potential increase in price ($102 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($13 potential savings vs. average RT price).
Average for round-trip flights in April 2025

Find 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 abril 22, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/208:17 pmORD - PHL
Nonstop2h 27mFrontier
dom. 6/225:45 amPHL - ORD
Nonstop2h 32mFrontier
Deal found 4/22$161
This Cheapflightsfares deal was found by Cheapflights users on 4/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/1212:15 pmMDW - PHL
Nonstop2h 02mFrontier
lun. 5/194:12 pmPHL - MDW
Nonstop2h 16mFrontier
Deal found 4/21$162
This Southwest deal was found by Cheapflights users on 4/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/246:20 pmMDW - PHL
Nonstop1h 55mSouthwest
mar. 5/276:35 pmPHL - MDW
Nonstop2h 10mSouthwest
Deal found 4/21$169
This American Airlines deal was found by Cheapflights users on 4/22. 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.
mié. 6/257:01 amORD - PHL
Nonstop2h 02mAmerican Airlines
mar. 7/14:23 pmPHL - ORD
Nonstop2h 32mAmerican Airlines
Deal found 4/22$169
This United Airlines deal was found by Cheapflights users on 4/22. 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.
mié. 5/218:45 amORD - PHL
Nonstop2h 08mUnited Airlines
dom. 5/256:30 amPHL - ORD
Nonstop2h 24mUnited Airlines
Deal found 4/22$180
This FlightHub deal was found by Cheapflights users on 4/22. 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.
mié. 5/1412:41 pmORD - PHL
1 stop9h 02mMultiple Airlines
lun. 5/195:01 pmPHL - ORD
Nonstop2h 28mMultiple Airlines
Deal found 4/22$181
This Delta deal was found by Cheapflights users on 4/21. 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. 5/241:08 pmMDW - PHL
1 stop3h 28mDelta
mié. 5/2810:04 amPHL - MDW
1 stop3h 24mDelta
Deal found 4/21$197
This JetBlue deal was found by Cheapflights users on 4/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/68:45 amORD - PHL
1 stop6h 52mJetBlue
vie. 6/1310:15 amPHL - ORD
1 stop6h 38mJetBlue
Deal found 4/22$201
This Delta deal was found by Cheapflights users on 4/22. 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.
mié. 5/216:24 amORD - PHL
1 stop6h 36mDelta
dom. 5/251:15 pmPHL - ORD
1 stop6h 33mDelta
Deal found 4/22$208
This Mytrip deal was found by Cheapflights users on 4/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/79:55 amORD - PHL
1 stop25h 57mSpirit Airlines
jue. 5/87:12 pmPHL - ORD
1 stop29h 17mSpirit Airlines
Deal found 4/21$222
This Southwest deal was found by Cheapflights users on 4/22. 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.
lun. 7/284:00 pmORD - PHL
1 stop6h 30mSouthwest
mié. 7/305:30 amPHL - ORD
1 stop8h 15mSouthwest
Deal found 4/22$242
This Mytrip deal was found by Cheapflights users on 4/22. 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. 5/1710:10 amSTL - PHL
2 stops20h 38mMultiple Airlines
lun. 5/197:06 amPHL - STL
3 stops12h 35mMultiple Airlines
Deal found 4/22$309

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 abril 22, 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

vie. 6/20

8:17 pm-11:44 pm

Nonstop2h 27m

Philadelphia

dom. 6/22

5:45 am-7:17 am

Nonstop2h 32m

$161

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

lun. 5/12

12:15 pm-3:17 pm

Nonstop2h 02m

Philadelphia

lun. 5/19

4:12 pm-5:28 pm

Nonstop2h 16m

$162

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

sáb. 5/24

6:20 pm-9:15 pm

Nonstop1h 55m

Philadelphia

mar. 5/27

6:35 pm-7:45 pm

Nonstop2h 10m

$169

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

mié. 6/25

7:01 am-10:03 am

Nonstop2h 02m

Philadelphia

mar. 7/1

4:23 pm-5:55 pm

Nonstop2h 32m

$169

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

mié. 5/21

8:45 am-11:53 am

Nonstop2h 08m

Philadelphia

dom. 5/25

6:30 am-7:54 am

Nonstop2h 24m

$180

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

mié. 5/14

12:41 pm-10:43 pm

1 stop9h 02m

Philadelphia

dom. 5/18

7:15 am-8:43 am

Nonstop2h 28m

$181

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

sáb. 5/24

1:08 pm-5:36 pm

1 stop3h 28m

Philadelphia

mié. 5/28

10:04 am-12:28 pm

1 stop3h 24m

$197

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

vie. 6/6

8:45 am-4:37 pm

1 stop6h 52m

Philadelphia

vie. 6/13

10:15 am-3:53 pm

1 stop6h 38m

$201

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

mié. 5/21

6:24 am-2:00 pm

1 stop6h 36m

Philadelphia

dom. 5/25

1:15 pm-6:48 pm

1 stop6h 33m

$208

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

mié. 5/7

9:55 am-12:52 pm

1 stop25h 57m

Philadelphia

jue. 5/8

7:12 pm-11:29 pm

1 stop29h 17m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

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

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 abril 22, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Illinois to Delaware. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
8.0
Very good

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $85. Frontier flights start at $86 while deals on Southwest start at $89 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

Browse thousands of different options on Cheapflights for your next trip

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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.

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 abril 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$181Average$181FlexibilityNo cancel feeOn-time71%

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