$149+ Cheap flights from Waterloo, IA (ALO) to Illinois
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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — ORD
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights from Waterloo to Illinois 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
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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 Waterloo to Illinois
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Cheapest flights from Waterloo to IllinoisExplore the most affordable flight options available from Waterloo to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
Explore the most affordable flight options available from Waterloo to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/33:43 pm -
Nonstop1h 41m
Sun 12/610:36 pm -
Nonstop1h 23m
Deal found 9/14![American Airlines logo]()
$204
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.
Sun 10/113:39 pm -
Nonstop1h 35m
Wed 10/141:40 pm -
Nonstop1h 29m
Deal found 9/15![American Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/35:00 am -
Nonstop1h 24m
Sun 10/1810:25 pm -
Nonstop1h 26m
Deal found 9/14![American Airlines logo]()
$364
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 10/13:29 pm -
Nonstop1h 39m
Thu 10/110:38 pm -
Nonstop1h 21m
Deal found 9/15![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 9/13. 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 9/255:00 am -
Nonstop1h 24m
Fri 9/251:28 pm -
Nonstop1h 27m
Deal found 9/13![American Airlines logo]()
$493
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/255:00 am -
1 stop5h 18m
Tue 9/295:18 pm -
1 stop6h 41m
Deal found 9/10![American Airlines logo]()
$553
This American Airlines deal was found by Cheapflights users on 9/14. 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 9/295:00 am -
1 stop5h 18m
Sat 10/35:18 pm -
1 stop6h 41m
Deal found 9/14![American Airlines logo]()
$570
Best flights from Waterloo to IllinoisDiscover carefully curated flight deals from Waterloo to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from Waterloo to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This American Airlines deal was found by Cheapflights users on 9/13. 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 10/83:39 pm -
Nonstop1h 35m
Sun 10/111:40 pm -
Nonstop1h 29m
Deal found 9/13![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/43:43 pm -
Nonstop1h 41m
Sun 12/61:47 pm -
Nonstop1h 26m
Deal found 9/14![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/11. 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 10/213:39 pm -
Nonstop1h 35m
Sat 10/3110:25 pm -
Nonstop1h 26m
Deal found 9/11![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/33:43 pm -
Nonstop1h 41m
Sat 12/510:36 pm -
Nonstop1h 23m
Deal found 9/14![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/255:00 am -
Nonstop1h 24m
Tue 9/2910:38 pm -
Nonstop1h 21m
Deal found 9/10![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 11/63:43 pm -
Nonstop1h 41m
Wed 11/1110:15 pm -
Nonstop1h 23m
Deal found 9/10![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/14. 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 12/33:43 pm -
Nonstop1h 41m
Sun 12/610:36 pm -
Nonstop1h 23m
Deal found 9/14![American Airlines logo]()
$204
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.
Sun 10/113:39 pm -
Nonstop1h 35m
Wed 10/141:40 pm -
Nonstop1h 29m
Deal found 9/15![American Airlines logo]()
$293
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.
Tue 11/36:04 am -
Nonstop1h 35m
Wed 11/410:15 pm -
Nonstop1h 23m
Deal found 9/15![American Airlines logo]()
$293
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 10/15:00 am -
Nonstop1h 24m
Fri 10/210:38 pm -
Nonstop1h 21m
Deal found 9/15![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 9/285:00 am -
Nonstop1h 24m
Fri 10/210:38 pm -
Nonstop1h 21m
Deal found 9/13![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 9/12. 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.
Sun 9/275:00 am -
Nonstop1h 24m
Thu 10/11:28 pm -
Nonstop1h 27m
Deal found 9/12![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/255:00 am -
1 stop5h 18m
Tue 9/295:18 pm -
1 stop6h 41m
Deal found 9/10![American Airlines logo]()
$553
This American Airlines deal was found by Cheapflights users on 9/14. 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 9/295:00 am -
1 stop5h 18m
Sat 10/35:18 pm -
1 stop6h 41m
Deal found 9/14![American Airlines logo]()
$570
Last-minute flights from Waterloo to IllinoisDiscover last-minute flight deals from Waterloo to Illinois. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from Waterloo to Illinois. Data last updated September 15, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/255:00 am -
Nonstop1h 24m
Tue 9/2910:38 pm -
Nonstop1h 21m
Deal found 9/10![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/13. 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 9/255:00 am -
Nonstop1h 24m
Fri 9/251:28 pm -
Nonstop1h 27m
Deal found 9/13![American Airlines logo]()
$493
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/255:00 am -
1 stop5h 18m
Tue 9/295:18 pm -
1 stop6h 41m
Deal found 9/10![American Airlines logo]()
$553
This American Airlines deal was found by Cheapflights users on 9/14. 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 9/295:00 am -
1 stop5h 18m
Sat 10/35:18 pm -
1 stop6h 41m
Deal found 9/14![American Airlines logo]()
$570
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 10/13:29 pm -
Nonstop1h 39m
Thu 10/110:38 pm -
Nonstop1h 21m
Deal found 9/15![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/35:00 am -
Nonstop1h 24m
Sun 10/1810:25 pm -
Nonstop1h 26m
Deal found 9/14![American Airlines logo]()
$364
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.
Sun 10/113:39 pm -
Nonstop1h 35m
Wed 10/141:40 pm -
Nonstop1h 29m
Deal found 9/15![American Airlines logo]()
$293
One-way flights from Waterloo to IllinoisSearch for one-way flight options from Waterloo to Illinois. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from Waterloo to Illinois. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This American Airlines deal was found by Cheapflights users on 9/10. 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 11/116:04 am -
Nonstop1h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![American Airlines logo]()
$149
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 3/73:48 pm -
Nonstop1h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![American Airlines logo]()
$169
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.
Sat 3/133:48 pm -
Nonstop1h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![American Airlines logo]()
$179
This American Airlines deal was found by Cheapflights users on 9/13. 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 9/303:29 pm -
Nonstop1h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![American Airlines logo]()
$206
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.
Fri 3/125:00 am -
Nonstop1h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![American Airlines logo]()
$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.
Sun 3/143:48 pm -
Nonstop1h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![American Airlines logo]()
$249
Find flight deals from Waterloo to Illinois
Keep the following information in mind while searching for Waterloo to Illinois flight deals. Data was last updated September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $204 (American Airlines) |
One-way from | $149 (American Airlines) |
Good round-trip deal | $534 or less |
Good one-way deal | $388 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Waterloo 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 7,457,451 searches. Data last updated September 15, 2026.
Use the filters below to find and compare flights from Waterloo to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Tue 11/10
6:04 am-7:39 am
Nonstop1h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
Quickest round-trip
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Wed 10/14
6:07 am-7:34 am
Nonstop1h 27m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Sat 11/14
6:04 am-7:39 am
Nonstop1h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Sat 10/17
6:07 am-7:34 am
Nonstop1h 27m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Thu 11/12
6:04 am-7:39 am
Nonstop1h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Tue 3/9
3:48 pm-5:24 pm
Nonstop1h 36m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Thu 10/29
6:07 am-7:34 am
Nonstop1h 27m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Fri 10/16
3:39 pm-5:14 pm
Nonstop1h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Thu 10/8
3:39 pm-5:14 pm
Nonstop1h 35m
Chicago O'Hare Intl
Sun 10/11
1:40 pm-3:09 pm
Nonstop1h 29m
$204
WaterlooChicago
ALO Waterloo - ORD Chicago O'Hare Intl
ALOORD
Waterloo
Fri 12/4
3:43 pm-5:24 pm
Nonstop1h 41m
Chicago O'Hare Intl
Sun 12/6
1:47 pm-3:13 pm
Nonstop1h 26m
$204
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from Waterloo to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Waterloo with our price prediction graph.
ALO-ORD
ALO-STL
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 Waterloo to Illinois
ALO-USIL
ALO-ORD
ALO-STL
No data available for this route at this time. Please check back soon.
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 15, 2026.
Get a feel of what it's like to fly with American Airlines from Waterloo to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.2
Food
6.4
Overall
7.1
Entertainment
6.8
Boarding
7.4
Crew
7.9
Reviews
1 / 20
2.0
MediocreAnonymous,Aug 2025
BNA - ORD
Comfort
7.2
Food
6.4
Overall
7.1
Entertainment
6.8
Boarding
7.4
Crew
7.9
Reviews
1 / 20
2.0
MediocreAnonymous,Aug 2025
BNA - ORD
Related info for your journey
Find useful and relevant information for your journey from Waterloo to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
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Waterloo and Illinois flights
Browse other Waterloo and Illinois flight options. Last updated on September 15, 2026.
Popular flight searches
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Waterloo to Illinois flights
Consider these flights traveling from Waterloo to Illinois.
Top airline flying from Waterloo to Illinois
Discover the top airline that operate flights from Waterloo 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 7,457,451 searches. Data last updated September 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$203 | Average$303 | FlexibilityNo cancel fee | On-time71% |