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$124+ 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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — ORD
Oct 18 — Oct 251
Sat 10/18
Sat 10/25
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 September 18, 2025.

Round-trip from

$179
(United Airlines)

One-way from

$124
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$259

Good round-trip deal

$293 or less

Good one-way deal

$223 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 ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 18, 2025.

This United Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 10/107:21 amDAY - ORD
Nonstop1h 29mUnited Airlines
Sun 10/128:45 amORD - DAY
Nonstop1h 22mUnited Airlines
Deal found 9/17$179
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 10/25:55 pmDAY - ORD
Nonstop1h 29mUnited Airlines
Mon 10/65:50 pmORD - DAY
Nonstop1h 19mUnited Airlines
Deal found 9/17$189
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 10/179:00 amDAY - ORD
Nonstop1h 26mUnited Airlines
Sun 10/198:45 amORD - DAY
Nonstop1h 22mUnited Airlines
Deal found 9/17$194
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Fri 9/2611:42 amDAY - ORD
Nonstop1h 28mUnited Airlines
Tue 9/309:18 pmORD - DAY
Nonstop1h 26mUnited Airlines
Deal found 9/15$199
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 10/161:38 pmDAY - ORD
Nonstop1h 29mUnited Airlines
Sun 10/198:45 amORD - DAY
Nonstop1h 22mUnited Airlines
Deal found 9/17$201
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/179:00 amDAY - ORD
Nonstop1h 26mUnited Airlines
Mon 10/205:50 pmORD - DAY
Nonstop1h 19mUnited Airlines
Deal found 9/16$213
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 11/85:01 pmDAY - ORD
Nonstop1h 35mAmerican Airlines
Sat 11/87:30 pmORD - DAY
1 stop13h 10mAmerican Airlines
Deal found 9/16$220
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 11/282:17 pmDAY - ORD
Nonstop1h 29mAmerican Airlines
Wed 12/31:45 pmORD - DAY
1 stop5h 14mAmerican Airlines
Deal found 9/16$223
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:00 amDAY - STL
1 stop7h 06mAmerican Airlines
Thu 10/306:00 amSTL - DAY
1 stop4h 55mAmerican Airlines
Deal found 9/17$229
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/206:00 amDAY - ORD
1 stop7h 28mAmerican Airlines
Sun 11/239:00 pmORD - DAY
Nonstop1h 21mAmerican Airlines
Deal found 9/15$234
This Delta deal was found by Cheapflights users on 9/17. 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.
Thu 10/21:16 pmDAY - STL
1 stop5h 31mDelta
Mon 10/67:05 amSTL - DAY
1 stop6h 27mDelta
Deal found 9/17$239
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/99:00 amDAY - ORD
Nonstop1h 26mUnited Airlines
Sun 10/1210:40 amORD - DAY
Nonstop1h 22mUnited Airlines
Deal found 9/16$239

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 September 18, 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

Sat 11/1

6:55 am-7:20 am

Nonstop1h 25m

Chicago O'Hare Intl

Mon 11/10

9:30 pm-11:43 pm

Nonstop1h 13m

$179

DaytonChicago

DAY - ORD

DAYORD

Dayton

Fri 11/28

2:17 pm-2:46 pm

Nonstop1h 29m

Chicago O'Hare Intl

Wed 12/3

8:50 pm-11:09 pm

Nonstop1h 19m

$179

DaytonChicago

DAY - ORD

DAYORD

Dayton

Fri 10/10

7:21 am-7:50 am

Nonstop1h 29m

Chicago O'Hare Intl

Sun 10/12

10:40 am-1:02 pm

Nonstop1h 22m

$179

DaytonChicago

DAY - ORD

DAYORD

Dayton

Tue 10/14

11:42 am-12:10 pm

Nonstop1h 28m

Chicago O'Hare Intl

Tue 10/21

9:18 pm-11:43 pm

Nonstop1h 25m

$179

DaytonChicago

DAY - ORD

DAYORD

Dayton

Sun 11/2

7:00 am-7:26 am

Nonstop1h 26m

Chicago O'Hare Intl

Mon 11/10

9:30 pm-11:43 pm

Nonstop1h 13m

$179

DaytonChicago

DAY - ORD

DAYORD

Dayton

Fri 10/24

9:00 am-9:26 am

Nonstop1h 26m

Chicago O'Hare Intl

Sun 10/26

8:45 am-11:08 am

Nonstop1h 23m

$179

DaytonChicago

DAY - ORD

DAYORD

Dayton

Mon 9/29

11:42 am-12:10 pm

Nonstop1h 28m

Chicago O'Hare Intl

Wed 10/15

8:45 am-11:07 am

Nonstop1h 22m

$194

DaytonChicago

DAY - ORD

DAYORD

Dayton

Fri 10/17

9:00 am-9:26 am

Nonstop1h 26m

Chicago O'Hare Intl

Mon 10/20

5:50 pm-8:09 pm

Nonstop1h 19m

$213

DaytonChicago

DAY - ORD

DAYORD

Dayton

Fri 10/17

9:00 am-9:26 am

Nonstop1h 26m

Chicago O'Hare Intl

Sun 10/19

8:45 am-11:07 am

Nonstop1h 22m

$213

DaytonChicago

DAY - ORD

DAYORD

Dayton

Thu 12/11

2:39 pm-3:07 pm

Nonstop1h 28m

Chicago O'Hare Intl

Sat 12/13

4:05 pm-10:42 pm

1 stop5h 37m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 60 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 September 18, 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 September 18, 2025.

The most flights from DAY to USIL are scheduled on a Monday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

How much does it cost to fly round-trip from Dayton to Illinois?

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 September 18, 2025.
Read reviews from past customers who have flown 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.
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.

  • How long is the flight from Dayton to Illinois?

    For as low as $179, United Airlines can have you in Illinois from Dayton in 1h 25m. There are 240 mi between Dayton and Illinois. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 American Airlines ($134), United Airlines ($194), and Allegiant Air ($258).

  • 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%), Republic Airways (100%), ANA (80%).

  • What are the cheapest flights from Dayton to Illinois?

    Looking at all options, your cheapest flight can be booked for $163. While the most popular route (Dayton - Chicago O'Hare Intl) can be booked for $179 on average, our data indicates $948 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.

See more FAQs

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Alternative routes for Dayton to Illinois

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Top 2 airlines flying from Dayton to Illinois

Discover the top 2 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 September 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$294FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$298FlexibilityNo cancel feeOn-time71%

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