$98+ Cheap flights from Decatur, IL (DEC) to O'Hare Intl (ORD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — ORD
Oct 24 — Oct 311
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Decatur to O'Hare Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Decatur to O'Hare Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Decatur to O'Hare IntlExplore the most affordable flight options available from Decatur to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 24, 2026.
Explore the most affordable flight options available from Decatur to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/209:10 am -
Nonstop1h 09m
Sun 11/225:00 pm -
Nonstop1h 10m
Deal found 9/20![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 9/23. 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 11/146:57 pm -
Nonstop1h 28m
Mon 11/165:00 pm -
Nonstop1h 10m
Deal found 9/23![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Sat 10/37:18 pm -
Nonstop1h 17m
Thu 10/87:25 am -
Nonstop1h 10m
Deal found 9/22![United Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Sun 10/49:12 am -
Nonstop1h 17m
Thu 10/84:40 pm -
Nonstop1h 13m
Deal found 9/19![United Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 9/23. 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 9/257:18 pm -
Nonstop1h 17m
Sun 9/277:25 am -
Nonstop1h 10m
Deal found 9/23![United Airlines logo]()
$199
This United Airlines deal was found by Cheapflights users on 9/20. 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 9/249:12 am -
Nonstop1h 17m
Sat 9/265:30 pm -
Nonstop1h 13m
Deal found 9/20![United Airlines logo]()
$391
Best flights from Decatur to O'Hare IntlDiscover carefully curated flight deals from Decatur to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
Discover carefully curated flight deals from Decatur to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Wed 10/77:18 pm -
Nonstop1h 17m
Sun 10/117:25 am -
Nonstop1h 10m
Deal found 9/22![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:12 am -
Nonstop1h 17m
Sun 10/254:45 pm -
Nonstop1h 10m
Deal found 9/21![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 9/19. 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 11/206:57 pm -
Nonstop1h 28m
Sun 11/297:25 am -
Nonstop1h 10m
Deal found 9/19![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 9/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:12 am -
Nonstop1h 17m
Mon 10/267:25 am -
Nonstop1h 10m
Deal found 9/21![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/209:10 am -
Nonstop1h 09m
Sun 11/225:00 pm -
Nonstop1h 10m
Deal found 9/20![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/146:57 pm -
Nonstop1h 28m
Mon 11/167:25 am -
Nonstop1h 10m
Deal found 9/20![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Sun 10/187:18 pm -
Nonstop1h 17m
Sun 10/254:45 pm -
Nonstop1h 10m
Deal found 9/20![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 9/23. 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 11/146:57 pm -
Nonstop1h 28m
Wed 11/187:25 am -
Nonstop1h 10m
Deal found 9/23![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 9/23. 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 3/116:55 pm -
Nonstop1h 05m
Sun 3/147:45 am -
Nonstop1h 01m
Deal found 9/23![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 9/23. 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 1/79:42 am -
Nonstop1h 05m
Mon 1/117:45 am -
Nonstop1h 01m
Deal found 9/23![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 9/24. 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 10/99:12 am -
Nonstop1h 17m
Tue 10/135:30 pm -
Nonstop1h 13m
Deal found 9/24![United Airlines logo]()
$159
Last-minute flights from Decatur to O'Hare IntlDiscover last-minute flight deals from Decatur to O'Hare Intl. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from Decatur to O'Hare Intl. Data last updated September 24, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/20. 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 9/249:12 am -
Nonstop1h 17m
Sat 9/265:30 pm -
Nonstop1h 13m
Deal found 9/20![United Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 9/23. 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 9/257:18 pm -
Nonstop1h 17m
Sun 9/277:25 am -
Nonstop1h 10m
Deal found 9/23![United Airlines logo]()
$199
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Sat 10/37:18 pm -
Nonstop1h 17m
Thu 10/87:25 am -
Nonstop1h 10m
Deal found 9/22![United Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Sun 10/49:12 am -
Nonstop1h 17m
Thu 10/84:40 pm -
Nonstop1h 13m
Deal found 9/19![United Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Wed 10/77:18 pm -
Nonstop1h 17m
Sun 10/117:25 am -
Nonstop1h 10m
Deal found 9/22![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Wed 10/149:12 am -
Nonstop1h 17m
Wed 10/215:30 pm -
Nonstop1h 13m
Deal found 9/19![United Airlines logo]()
$159
One-way flights from Decatur to O'Hare IntlSearch for one-way flight options from Decatur to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
Search for one-way flight options from Decatur to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Fri 10/237:18 pm -
Nonstop1h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![United Airlines logo]()
$98
This United Airlines deal was found by Cheapflights users on 9/24. 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 10/17:18 pm -
Nonstop1h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![United Airlines logo]()
$148
Find flight deals from Decatur to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from Decatur (DEC) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $149 (United Airlines) |
One-way from | $98 (United Airlines) |
Popular in | October |
Cheapest in | January |
Average price | $158 |
Good round-trip deal | $354 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Decatur to O'Hare Intl 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 7,457,451 searches. Data last updated September 24, 2026.
Use the filters below to find and compare flights from Decatur to Chicago O'Hare Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Fri 10/23
7:18 pm-8:35 pm
Nonstop1h 17m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$98
Quickest round-trip
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Thu 3/4
9:42 am-10:47 am
Nonstop1h 05m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$98
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Sat 11/21
6:57 pm-8:25 pm
Nonstop1h 28m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$98
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Wed 10/7
7:18 pm-8:35 pm
Nonstop1h 17m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$98
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Mon 12/7
6:57 pm-8:25 pm
Nonstop1h 28m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$98
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Fri 2/26
9:42 am-10:47 am
Nonstop1h 05m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$98
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Thu 10/1
7:18 pm-8:35 pm
Nonstop1h 17m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$148
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Sat 10/3
7:18 pm-8:35 pm
Nonstop1h 17m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$148
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Wed 10/7
7:18 pm-8:35 pm
Nonstop1h 17m
Chicago O'Hare Intl
Sun 10/11
7:25 am-8:35 am
Nonstop1h 10m
$149
DecaturChicago
DEC Decatur Arpt - ORD Chicago O'Hare Intl
DECORD
Decatur Arpt
Thu 10/22
9:12 am-10:29 am
Nonstop1h 17m
Chicago O'Hare Intl
Sun 10/25
4:45 pm-5:55 pm
Nonstop1h 10m
$149
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Decatur to O'Hare Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Decatur to O'Hare Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Decatur, Illinois-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Decatur, Illinois-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Decatur, Illinois-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Decatur, Illinois-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Decatur, Illinois-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Decatur to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Decatur with our price prediction graph.
DEC-ORD
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 Decatur to Chicago O'Hare Intl Airport
What is the cheapest time of day to fly from DEC to ORD?
Find hourly flight availability from Decatur to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 24, 2026.
When flying from Decatur, Illinois to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 63% versus a flight at noon.
What is the cheapest day to fly from Decatur, Illinois to Chicago O'Hare Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from Decatur to O'Hare Intl. Price data was last updated on September 19, 2026.
Travelers seeking maximum savings on their Decatur, Illinois to Chicago O'Hare Intl Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing O'Hare Intl
Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated September 24, 2026.
Peruse reviews from past customers who have flown with United Airlines from Decatur to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Entertainment
7.1
Food
6.7
Crew
8.1
Boarding
7.7
Overall
7.4
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Comfort
7.3
Entertainment
7.1
Food
6.7
Crew
8.1
Boarding
7.7
Overall
7.4
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from Decatur to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Chicago O'Hare Intl Airport?
Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locationsBenton Harbor
Rosemont
Des Plaines
Lake Geneva
Naperville
Glenview
Schaumburg
Oakbrook Terrace
Delavan
Oak Brook
Aurora
Libertyville
Rockford
Hoffman Estates
Beloit
Orland Park
South Holland
Elgin
Racine
Janesville
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
O'Hare Intl flight routes
Other flight options
Popular flights
Alternative routes for Decatur to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to O'Hare Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Decatur to O'Hare Intl by cabin class
Find flights from Decatur to O'Hare Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to O'Hare Intl
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.
Decatur and O'Hare Intl flights
Browse other Decatur and O'Hare Intl flight options. Last updated on September 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Decatur to O'Hare Intl
Discover the top airline that operate flights from Decatur to O'Hare Intl. 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 7,457,451 searches. Data last updated September 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$148 | Average$190 | FlexibilityNo cancel fee | On-time69% |