$124 Find Cheap Flights from Dayton to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dayton to Illinois departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Dayton to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$247
Moline
Moline1 stop$314
St. Louis
St. Louis1 stop$290
Chicago
Chicagononstop$247
Moline
Moline1 stop$314
St. Louis
St. Louis1 stop$290

Book Cheap Dayton to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dayton to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dayton to Illinois

Wed, Sep 16 - Wed, Sep 23
United Airlines Logo
5:30 am - 5:59 am
DAY
-
ORD
1h 29mnonstop
United Airlines Logo
4:00 pm - 6:29 pm
ORD
-
DAY
1h 29mnonstop
$247United Airlines
Sat, Sep 5 - Sun, Sep 6
United Airlines Logo
2:23 pm - 2:55 pm
DAY
-
ORD
1h 32mnonstop
United Airlines Logo
8:40 am - 10:58 am
ORD
-
DAY
1h 18mnonstop
$247United Airlines
Wed, Dec 23 - Wed, Dec 30
American Airlines Logo
6:00 am - 6:29 am
DAY
-
ORD
1h 29mnonstop
American Airlines Logo
9:30 pm - 11:56 pm
ORD
-
DAY
1h 26mnonstop
$247American Airlines
Sat, Sep 5 - Sun, Sep 6
American Airlines Logo
8:31 am - 9:06 am
DAY
-
ORD
1h 35mnonstop
American Airlines Logo
8:20 pm - 10:46 pm
ORD
-
DAY
1h 26mnonstop
$247American Airlines
Wed, Sep 9 - Wed, Sep 23
American Airlines Logo
7:09 pm - 8:02 pm
DAY
-
ORD
1h 53mnonstop
American Airlines Logo
9:15 pm - 11:38 pm
ORD
-
DAY
1h 23mnonstop
$247American Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
9:00 am - 9:37 am
DAY
-
ORD
1h 37mnonstop
United Airlines Logo
8:40 am - 10:57 am
ORD
-
DAY
1h 17mnonstop
$247United Airlines
Fri, Sep 4 - Tue, Sep 8
United Airlines Logo
7:15 am - 7:53 am
DAY
-
ORD
1h 38mnonstop
United Airlines Logo
8:29 am - 10:49 am
ORD
-
DAY
1h 20mnonstop
$248United Airlines
Fri, Dec 4 - Sat, Dec 5
Delta Logo
6:46 pm - 11:56 pm
DAY
-
STL
6h 10m
1 stop
Delta Logo
10:50 am - 3:40 pm
STL
-
DAY
3h 50m
1 stop
$290Delta
Fri, Nov 13 - Mon, Nov 16
Delta Logo
3:22 pm - 9:33 pm
DAY
-
STL
7h 11m
1 stop
Delta Logo
5:37 pm - 11:06 pm
STL
-
DAY
4h 29m
1 stop
$299Delta
Fri, Oct 9 - Sun, Oct 11
Delta Logo
3:25 pm - 9:23 pm
DAY
-
STL
6h 58m
1 stop
Delta Logo
7:00 am - 2:40 pm
STL
-
DAY
6h 40m
1 stop
$299Delta
Booking Insights

KAYAK's insights & trends for Dayton to Illinois flights

Get data-powered insights and trends into flights from Dayton to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Dayton to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Dayton to Illinois departing in September.

Flight prices are below average for this route right now.

Flights to Illinois from Dayton usually cost between $280 and $371 in September.
The lowest price found in the past 5 days was $247 on United Airlines (Sep 5-Sep 6).

What is the cheapest Dayton to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Dayton found in the last 5 days was to Chicago, at $300 round-trip. The most popular route is from Dayton (DAY) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $300.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Dayton to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $432 on average. Morning departures are around 19% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $733.

Can I save money by flying with a layover from Dayton to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $339, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Dayton to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Dayton to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Dayton to Illinois is December, when tickets cost $227 (return) on average. On the other hand, the most expensive months are July and May, when the average cost of round-trip tickets is $347 and $338 respectively.

What’s the cheapest day of the week to fly from Dayton to Illinois?

The average price of all round-trip flights from Dayton to Illinois clicked on KAYAK for each day over the last 12 months.

When flying from Dayton to Illinois, you should consider leaving on a Friday and avoid Mondays if you are looking for the best rates. For your return to Dayton, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

How far in advance should I book a flight from Dayton to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Dayton to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Dayton to Illinois, you should book around 2 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low season

March

Cheapest flight

$124
Best time to beat the crowds but there is an average 58% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Dayton to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Dayton to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Dayton to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Dayton to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Dayton to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Dayton to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Dayton to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Dayton to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Dayton to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Dayton to the following destinations at these prices or less: Chicago $346 one-way - $401 round-trip

Reviews of the top airlines flying from Dayton to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Dayton to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dayton to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10052 reviews
7.1Entertainment
6.6Food
8.1Crew
7.3Comfort
7.7Boarding
Airline reviews

Gluten free snack options and meals that offer both gluten free and dairy free.

8.0 ExcellentAnonymous, Jul 2026
PHX - ORD
Read more United Airlines reviews

Gluten free snack options and meals that offer both gluten free and dairy free.

Not a bad flight but a long delay boarding and taking off due to the pilot not arriving on time.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

The Wi-Fi did not work, so you weren't able to watch entertainment on your own device. They did not have wired headphones so you couldn't watch it on the in-seat entertainment screen either. There was plenty of time to do a drink and snag service but the flight attendants chose not to.

Great experience, boarding was fast and efficient, so much so that we arrived to Chicago very early

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

The seats on this flight weren’t as comfortable as we had expected. Even leaned back these seats left us feeling crappy in our backs. Also we had to use our own tablets for movies, but nothing in the seats in front of us to hold the tablets up.

Very bad! They kept delaying my flight and wouldn’t do anything about it

Crew did not arrive for their shift and flight delayed for 2 1/2 hours whilst new pilots were found. The man at the boarding gate did a great job keeping us informed and the eventual flight was good. It was just the long delay waiting…….

Take this flight regularly. Every single week same thing. Departure delayed. Make up some time in the air. Land at ORD and then wait for gate in "L" concourse Terminal 3 for 30-40 min-which yields a very delayed final arrival. Plus I get to taxi around and see every runway and drive over the bridge (IFKYK) over the expressway 2-4 times in most cases. Change the sched of incoming plane/work with FAA to improve traffic flow at ORD/change the timing of these flights. Whatever it takes. But do better.

Boarding was smooth and seamless and the flight was without incident.

There was a delay with the plan which cause the flight to leave later and once arrived in Chicago there was another delay and some passengers missed their connecting flights

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

New ridiculous policy by american destroyed my allegiance to american. As a million miler with american, I expected it would be easy to get on an earlier flight when I got to airport earlier than expected, and save a five hour layover. WRONG. The online app would not let me switch flights, So I called, and was promised a call back in 90 minutes. HAH! The customer service desk at DCA said “we no longer have access to changing a flight on our screens. If the app couldn’t do it, I should send a letter to American, but there’s nothing else possible!”

My luggage was lost during this connecting flight for nearly my ENTIRE 2 week stay in europe, this issue no doubt instigated by my original flight being delayed 6hrs I did not pack my "personal item" with anything of consequence, I had to buy CLOTHES & TOILETRIES TO LAST ME 2 WEEKS

The flight was delayed for five hours due to airplane issues.

Everything you need to know for your flight from Dayton to Illinois

Information on your arrival and departure airports