$131+ Cheap flights from Harlingen (HRL) 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ORD
May 31 — Jun 71
Round-trip
1 adult, Economy
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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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Cheapest flights from Harlingen to IllinoisExplore the most affordable flight options available from Harlingen to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
Explore the most affordable flight options available from Harlingen to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
This American Airlines deal was found by Cheapflights users on 4/26. 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 8/113:17 pm
HRL
- ORD
1 stop7h 53m
American Airlines
Wed 8/195:00 am
ORD
- HRL
1 stop5h 04m
American Airlines
Deal found 4/26![American Airlines logo]()
$261
This American Airlines deal was found by Cheapflights users on 4/27. 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 5/126:45 pm
HRL
- ORD
1 stop5h 03m
American Airlines
Sat 5/1611:43 am
ORD
- HRL
1 stop7h 50m
American Airlines
Deal found 4/27![American Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 4/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:55 am
HRL
- ORD
1 stop6h 20m
Southwest
Wed 6/33:45 pm
ORD
- HRL
1 stop5h 10m
Southwest
Deal found 4/29![Southwest logo]()
$289
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/196:45 pm
HRL
- ORD
1 stop5h 03m
American Airlines
Sat 5/234:44 pm
ORD
- HRL
1 stop7h 30m
American Airlines
Deal found 4/28![American Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 4/27. 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 6/54:57 pm
HRL
- ORD
1 stop7h 42m
American Airlines
Fri 6/125:00 am
ORD
- HRL
1 stop5h 13m
American Airlines
Deal found 4/27![American Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/65:18 pm
HRL
- ORD
1 stop5h 57m
United Airlines
Wed 5/132:05 pm
ORD
- HRL
1 stop5h 55m
United Airlines
Deal found 4/30![United Airlines logo]()
$328
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:10 am
HRL
- ORD
1 stop6h 05m
Southwest
Sat 5/162:05 pm
ORD
- HRL
2 stops7h 30m
Southwest
Deal found 4/27![Southwest logo]()
$337
This American Airlines deal was found by Cheapflights users on 4/27. 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 7/75:00 pm
HRL
- ORD
1 stop6h 39m
American Airlines
Sat 7/1112:05 pm
ORD
- HRL
1 stop8h 07m
American Airlines
Deal found 4/27![American Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/294:57 pm
HRL
- ORD
1 stop6h 40m
American Airlines
Fri 6/55:00 am
ORD
- HRL
1 stop5h 13m
American Airlines
Deal found 4/30![American Airlines logo]()
$341
Best flights from Harlingen to IllinoisDiscover carefully curated flight deals from Harlingen to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
Discover carefully curated flight deals from Harlingen to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
This Southwest deal was found by Cheapflights users on 4/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:55 am
HRL
- ORD
1 stop6h 20m
Southwest
Wed 6/33:45 pm
ORD
- HRL
1 stop5h 10m
Southwest
Deal found 4/29![Southwest logo]()
$289
This United Airlines deal was found by Cheapflights users on 4/29. 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 8/115:16 pm
HRL
- ORD
1 stop6h 01m
United Airlines
Wed 8/124:05 pm
ORD
- HRL
1 stop5h 39m
United Airlines
Deal found 4/29![United Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 4/30. 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 7/75:00 pm
HRL
- ORD
1 stop6h 39m
American Airlines
Sat 7/112:59 pm
ORD
- HRL
1 stop5h 13m
American Airlines
Deal found 4/30![American Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 4/26. 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 8/85:10 am
HRL
- ORD
1 stop5h 10m
United Airlines
Wed 8/196:30 am
ORD
- HRL
1 stop6h 44m
United Airlines
Deal found 4/26![United Airlines logo]()
$351
This United Airlines deal was found by Cheapflights users on 4/26. 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 8/135:16 pm
HRL
- ORD
1 stop7h 32m
United Airlines
Sat 8/227:30 am
ORD
- HRL
1 stop8h 04m
United Airlines
Deal found 4/26![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1912:45 pm
HRL
- ORD
2 stops9h 10m
Southwest
Sat 5/2312:15 pm
ORD
- HRL
2 stops9h 20m
Southwest
Deal found 4/28![Southwest logo]()
$419
This United Airlines deal was found by Cheapflights users on 4/29. 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 9/35:16 pm
HRL
- ORD
1 stop7h 32m
United Airlines
Tue 9/82:13 pm
ORD
- HRL
1 stop5h 16m
United Airlines
Deal found 4/29![United Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 4/26. 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 8/115:15 am
HRL
- ORD
1 stop4h 59m
United Airlines
Sun 8/166:30 am
ORD
- HRL
1 stop6h 44m
United Airlines
Deal found 4/26![United Airlines logo]()
$380
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/195:15 am
HRL
- ORD
1 stop4h 59m
United Airlines
Tue 9/222:08 pm
ORD
- HRL
2 stops23h 06m
United Airlines
Deal found 4/30![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 4/26. 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 8/95:20 pm
HRL
- ORD
1 stop7h 25m
United Airlines
Tue 8/186:30 am
ORD
- HRL
1 stop6h 44m
United Airlines
Deal found 4/26![United Airlines logo]()
$440
Last-minute flights from Harlingen to IllinoisDiscover last-minute flight deals from Harlingen to Illinois. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from Harlingen to Illinois. Data last updated May 1, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/65:18 pm
HRL
- ORD
1 stop5h 57m
United Airlines
Wed 5/132:05 pm
ORD
- HRL
1 stop5h 55m
United Airlines
Deal found 4/30![United Airlines logo]()
$328
This Southwest deal was found by Cheapflights users on 4/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:10 am
HRL
- ORD
1 stop6h 05m
Southwest
Wed 5/1311:55 am
ORD
- HRL
2 stops10h 05m
Southwest
Deal found 4/30![Southwest logo]()
$438
This American Airlines deal was found by Cheapflights users on 4/27. 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 5/126:45 pm
HRL
- ORD
1 stop5h 03m
American Airlines
Sat 5/1611:43 am
ORD
- HRL
1 stop7h 50m
American Airlines
Deal found 4/27![American Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:10 am
HRL
- ORD
1 stop6h 05m
Southwest
Sat 5/162:05 pm
ORD
- HRL
2 stops7h 30m
Southwest
Deal found 4/27![Southwest logo]()
$337
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/196:45 pm
HRL
- ORD
1 stop5h 03m
American Airlines
Sat 5/234:44 pm
ORD
- HRL
1 stop7h 30m
American Airlines
Deal found 4/28![American Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1912:45 pm
HRL
- ORD
2 stops9h 10m
Southwest
Sat 5/2312:15 pm
ORD
- HRL
2 stops9h 20m
Southwest
Deal found 4/28![Southwest logo]()
$419
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/214:57 pm
HRL
- ORD
1 stop7h 45m
American Airlines
Sat 5/234:44 pm
ORD
- HRL
1 stop7h 30m
American Airlines
Deal found 4/28![American Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:55 am
HRL
- ORD
1 stop6h 20m
Southwest
Sat 5/2312:15 pm
ORD
- HRL
2 stops9h 20m
Southwest
Deal found 4/28![Southwest logo]()
$470
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/284:57 pm
HRL
- ORD
1 stop7h 45m
American Airlines
Thu 6/45:00 am
ORD
- HRL
1 stop5h 13m
American Airlines
Deal found 4/30![American Airlines logo]()
$396
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/294:57 pm
HRL
- ORD
1 stop6h 40m
American Airlines
Fri 6/55:00 am
ORD
- HRL
1 stop5h 13m
American Airlines
Deal found 4/30![American Airlines logo]()
$341
One-way flights from Harlingen to IllinoisSearch for one-way flight options from Harlingen to Illinois. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
Search for one-way flight options from Harlingen to Illinois. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This American Airlines deal was found by Cheapflights users on 4/29. 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 7/85:22 pm
HRL
- ORD
1 stop7h 21m
American Airlines
Deal found 4/29![American Airlines logo]()
$131
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/126:45 pm
HRL
- ORD
1 stop5h 03m
American Airlines
Deal found 4/28![American Airlines logo]()
$139
This American Airlines deal was found by Cheapflights users on 4/28. 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 7/105:00 pm
HRL
- ORD
1 stop7h 43m
American Airlines
Deal found 4/28![American Airlines logo]()
$170
This United Airlines deal was found by Cheapflights users on 4/26. 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 8/85:10 am
HRL
- ORD
1 stop5h 10m
United Airlines
Deal found 4/26![United Airlines logo]()
$176
This United Airlines deal was found by Cheapflights users on 4/29. 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 6/275:20 pm
HRL
- ORD
1 stop7h 25m
United Airlines
Deal found 4/29![United Airlines logo]()
$188
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:20 am
HRL
- ORD
2 stops12h 05m
Southwest
Deal found 4/28![Southwest logo]()
$199
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/274:57 pm
HRL
- ORD
1 stop7h 45m
American Airlines
Deal found 4/30![American Airlines logo]()
$200
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/305:20 pm
HRL
- ORD
1 stop7h 25m
United Airlines
Deal found 4/30![United Airlines logo]()
$205
This Southwest deal was found by Cheapflights users on 4/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:55 am
HRL
- ORD
2 stops8h 35m
Southwest
Deal found 4/30![Southwest logo]()
$221
This Southwest deal was found by Cheapflights users on 4/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:55 am
HRL
- ORD
2 stops8h 35m
Southwest
Deal found 4/29![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1212:45 pm
HRL
- ORD
2 stops9h 10m
Southwest
Deal found 4/28![Southwest logo]()
$235
This United Airlines deal was found by Cheapflights users on 4/29. 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 6/265:20 pm
HRL
- ORD
1 stop7h 25m
United Airlines
Deal found 4/29![United Airlines logo]()
$245
Find flight deals from Harlingen to Illinois
Keep the following information in mind while searching for Harlingen to Illinois flight deals. Data was last updated May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (American Airlines) |
One-way from | $131 (American Airlines) |
Popular in | January |
Cheapest in | August |
Average price | $321 |
Cheapflights Fare Finder
Customize your flight search to find flights from Harlingen 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 May 1, 2026.
Use the filters below to find and compare flights from Harlingen to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Mon 6/1
6:55 am-1:15 pm
1 stop6h 20m
Chicago O'Hare Intl
Wed 6/3
3:45 pm-8:55 pm
1 stop5h 10m
$289
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Tue 8/11
5:16 pm-11:17 pm
1 stop6h 01m
Chicago O'Hare Intl
Wed 8/12
4:05 pm-9:44 pm
1 stop5h 39m
$351
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Sat 8/8
5:10 am-10:20 am
1 stop5h 10m
Chicago O'Hare Intl
Wed 8/19
6:30 am-1:14 pm
1 stop6h 44m
$351
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Thu 8/13
5:16 pm-12:48 am
1 stop7h 32m
Chicago O'Hare Intl
Sat 8/22
7:30 am-3:34 pm
1 stop8h 04m
$359
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Thu 9/3
5:16 pm-12:48 am
1 stop7h 32m
Chicago O'Hare Intl
Tue 9/8
2:13 pm-7:29 pm
1 stop5h 16m
$377
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Tue 8/11
5:15 am-10:14 am
1 stop4h 59m
Chicago O'Hare Intl
Sun 8/16
6:30 am-1:14 pm
1 stop6h 44m
$380
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Tue 7/7
5:00 pm-11:39 pm
1 stop6h 39m
Chicago O'Hare Intl
Sat 7/11
2:59 pm-8:12 pm
1 stop5h 13m
$385
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Tue 5/19
12:45 pm-9:55 pm
2 stops9h 10m
Chicago O'Hare Intl
Sat 5/23
12:15 pm-9:35 pm
2 stops9h 20m
$419
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Sat 9/19
5:15 am-10:14 am
1 stop4h 59m
Chicago O'Hare Intl
Tue 9/22
2:08 pm-1:14 pm
2 stops23h 06m
$429
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
Sun 8/9
5:20 pm-12:45 am
1 stop7h 25m
Chicago O'Hare Intl
Tue 8/18
6:30 am-1:14 pm
1 stop6h 44m
$440
Showing 1-10 of 20 resultsSorted by cheapest first
Best time to book a flight from Harlingen to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Harlingen with our price prediction graph.
HRL-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 Harlingen to Illinois
HRL-USIL
HRL-ORD
What is the cheapest month to book a flight from Harlingen to Illinois?
Currently, October is the cheapest month in which you can book a flight from Harlingen to Illinois (average of $130). Flying from Harlingen to Illinois in March is currently the most expensive (average of $377). 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.
How much does it cost to fly round-trip from Harlingen 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 May 1, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican Airlines from Harlingen to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$250 | Average$393 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$252 | Average$328 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$259 | Average$438 | FlexibilityNo cancel fee | On-time71% |