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$141+ Cheap flights from Dayton (DAY) to Illinois

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — ORD
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
1 adult, Economy
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Cheap flight deals from Dayton to Illinois

Keep the following information in mind while searching for Dayton to Illinois flight deals. Data was last updated July 11, 2025.

Round-trip from

$179
(American Airlines)

One-way from

$152
(Delta)

Popular in

June

Cheapest in

January

Average price

$297

Good round-trip deal

$338 or less

Good one-way deal

$251 or less
From Dayton to Illinois
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One-way flight from Dayton to Illinois
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Highest demand for flights based on searches. 11% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Dayton to Illinois.
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Price to beat on a one-way flight from Dayton to Illinois.
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Find flight deals from Dayton to Illinois

Cheapest flights from Dayton to Illinois
Explore the most affordable flight options available from Dayton to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2025.

This American Airlines deal was found by Cheapflights users on 7/9. 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.
Fri 9/196:52 amDAY - ORD
Nonstop1h 31mAmerican Airlines
Thu 10/29:03 amORD - DAY
Nonstop1h 25mAmerican Airlines
Deal found 7/9$179
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Tue 8/268:24 amDAY - STL
1 stop5h 30mAmerican Airlines
Tue 9/93:59 pmSTL - DAY
1 stop6h 38mAmerican Airlines
Deal found 7/10$229
This Delta deal was found by Cheapflights users on 7/9. 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.
Thu 7/246:00 amDAY - STL
1 stop4h 41mDelta
Mon 7/285:23 pmSTL - DAY
1 stop5h 50mDelta
Deal found 7/9$239
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Sat 11/229:00 amDAY - ORD
Nonstop1h 29mUnited Airlines
Mon 12/16:02 pmORD - DAY
Nonstop1h 13mUnited Airlines
Deal found 7/9$239
This Delta deal was found by Cheapflights users on 7/8. 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.
Mon 8/186:00 amDAY - MDW
1 stop16h 44mDelta
Sat 8/236:04 amMDW - DAY
1 stop8h 26mDelta
Deal found 7/8$279
This Delta deal was found by Cheapflights users on 7/8. 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.
Mon 8/186:00 amDAY - ORD
1 stop18h 56mDelta
Sat 8/237:05 amORD - DAY
1 stop15h 18mDelta
Deal found 7/8$279
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Wed 7/305:22 pmDAY - MLI
1 stop5h 46mAmerican Airlines
Sat 8/25:00 amMLI - DAY
1 stop7h 06mAmerican Airlines
Deal found 7/10$323
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Tue 8/2611:42 amDAY - STL
1 stop5h 02mUnited Airlines
Tue 9/95:30 pmSTL - DAY
2 stops15h 20mUnited Airlines
Deal found 7/10$388
This American Airlines deal was found by Cheapflights users on 7/9. 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 7/2412:50 pmDAY - EVV
1 stop5h 55mAmerican Airlines
Mon 7/284:31 pmEVV - DAY
1 stop4h 39mAmerican Airlines
Deal found 7/9$531
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Thu 7/246:00 amDAY - MLI
1 stop5h 22mUnited Airlines
Mon 7/285:20 pmMLI - DAY
2 stops19h 56mUnited Airlines
Deal found 7/9$709

Cheapflights Fare Finder

Customize your flight search to find flights from Dayton to Illinois 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 July 11, 2025.
Use the filters below to find and compare flights from Dayton to Illinois that are best for you.

Fly from

Dayton

Fly to

Illinois

Route

Depart

Return

Price

DaytonChicago

DAY - ORD

DAYORD

Dayton

Fri 9/19

6:52 am-7:23 am

Nonstop1h 31m

Chicago O'Hare Intl

Thu 10/2

9:03 am-11:28 am

Nonstop1h 25m

$179

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Tue 8/26

8:24 am-12:54 pm

1 stop5h 30m

Lambert-St Louis

Tue 9/9

3:59 pm-11:37 pm

1 stop6h 38m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Thu 7/24

6:00 am-9:41 am

1 stop4h 41m

Lambert-St Louis

Mon 7/28

5:23 pm-12:13 am

1 stop5h 50m

$239

DaytonChicago

DAY - ORD

DAYORD

Dayton

Sat 11/22

9:00 am-9:29 am

Nonstop1h 29m

Chicago O'Hare Intl

Mon 12/1

6:02 pm-8:15 pm

Nonstop1h 13m

$239

DaytonChicago

DAY - MDW

DAYMDW

Dayton

Mon 8/18

6:00 am-9:44 pm

1 stop16h 44m

Chicago Midway

Sat 8/23

6:04 am-3:30 pm

1 stop8h 26m

$279

DaytonChicago

DAY - ORD

DAYORD

Dayton

Mon 8/18

6:00 am-11:56 pm

1 stop18h 56m

Chicago O'Hare Intl

Sat 8/23

7:05 am-11:23 pm

1 stop15h 18m

$279

DaytonMoline

DAY - MLI

DAYMLI

Dayton

Wed 7/30

5:22 pm-10:08 pm

1 stop5h 46m

Moline Quad-City

Sat 8/2

5:00 am-1:06 pm

1 stop7h 06m

$323

DaytonChicago

DAY - ORD

DAYORD

Dayton

Thu 8/7

8:49 pm-9:30 pm

2 stops25h 41m

Chicago O'Hare Intl

Thu 8/14

10:12 am-3:27 pm

3 stops28h 15m

$355

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Tue 8/26

11:42 am-3:44 pm

1 stop5h 02m

Lambert-St Louis

Tue 9/9

5:30 pm-9:50 am

2 stops15h 20m

$388

DaytonEvansville

DAY - EVV

DAYEVV

Dayton

Thu 7/24

12:50 pm-5:45 pm

1 stop5h 55m

Evansville Dress Regional

Mon 7/28

4:31 pm-10:10 pm

1 stop4h 39m

$531

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Showing 1-10 of 21 results
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Best time to book a flight from Dayton to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Dayton 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 Dayton to Illinois

What is the cheapest month to book a flight from Dayton to Illinois?

Currently, August is the cheapest month in which you can book a flight from Dayton to Illinois (average of $245). Flying from Dayton to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DAY to IL?

Find hourly flight availability from Dayton to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 11, 2025.

When flying from Dayton to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Dayton to Illinois

Explore weekly flight availability from Dayton to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 11, 2025.

The most flights from DAY to USIL are scheduled on a Thursday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated July 11, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Dayton to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,952 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,952 reviews
Delta
8.0
Very good
7,952 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,846 reviews
Delta
8.0
Very good
7,952 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,952 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

    If you book a flight to Illinois from Dayton, you will be flying from Dayton, which is the city’s only airport. Dayton (DAY) is located 10.0 mi from the center of Dayton.

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

    The cheapest airlines for a one-way flight from Dayton to Illinois are Delta ($152), American Airlines ($153), and United Airlines ($218).

  • What are the most popular routes from Dayton to Illinois?

    The most popular flight routes from Dayton to Illinois are Dayton - Chicago O'Hare Intl, Dayton - Chicago Midway and Dayton - Lambert-St Louis.

  • What are the most reliable airlines from Dayton to Illinois?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Dayton to Illinois on time: Envoy Air (100%), ANA (93%), GoJet (90%).

  • What are the cheapest flights from Dayton to Illinois?

    Looking at all options, your cheapest flight can be booked for $164. While the most popular route (Dayton - Chicago O'Hare Intl) can be booked for $179 on average our data indicates $1,937 when flying from Dayton to Illinois.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dayton to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dayton to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Dayton to Illinois (average of $245). Flying from Dayton to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 3 airlines flying from Dayton to Illinois

Discover the top 3 airlines that operate flights from Dayton to Illinois. 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 July 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$179Average$456FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$335FlexibilityNo cancel feeOn-time69%
DeltaCheapest$570Average$1,383FlexibilityNo cancel feeOn-timeN/A

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