$125+ Cheap flights from Harlingen (HRL) 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ORD
Nov 23 — Nov 301
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Harlingen 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
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 Harlingen to Illinois
Cheapest
Best
Last-minute
One-way
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 October 24, 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 October 24, 2026.
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Mon 12/712:00 pm -
1 stop6h 20m
Thu 12/105:45 am -
1 stop5h 29m
Deal found 10/22![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 10/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:30 pm -
2 stops6h 10m
Thu 12/1010:15 am -
2 stops10h 30m
Deal found 10/22![Southwest logo]()
$251
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 11/35:05 am -
1 stop6h 12m
Tue 11/104:07 pm -
1 stop6h 41m
Deal found 10/20![United Airlines logo]()
$322
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/55:25 pm -
1 stop7h 20m
Thu 11/129:21 am -
1 stop6h 40m
Deal found 10/20![United Airlines logo]()
$332
This Southwest deal was found by Cheapflights users on 10/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:25 am -
2 stops9h 40m
Mon 11/235:15 am -
1 stop4h 55m
Deal found 10/23![Southwest logo]()
$371
This American Airlines deal was found by Cheapflights users on 10/18. 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 12/102:24 pm -
1 stop7h 51m
Mon 12/145:00 am -
1 stop5h 11m
Deal found 10/18![American Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 10/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1511:35 am -
1 stop8h 20m
Tue 12/221:40 pm -
1 stop10h 30m
Deal found 10/20![Southwest logo]()
$391
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/285:05 am -
1 stop5h 05m
Tue 1/59:18 am -
1 stop6h 35m
Deal found 10/21![United Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 10/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:46 pm -
1 stop5h 34m
Sun 11/2910:03 am -
1 stop8h 13m
Deal found 10/20![American Airlines logo]()
$405
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Tue 11/35:05 am -
1 stop5h 06m
Sat 11/712:40 pm -
1 stop7h 07m
Deal found 10/19![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 10/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:15 am -
2 stops7h 05m
Wed 10/283:30 pm -
1 stop5h 30m
Deal found 10/21![Southwest logo]()
$414
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 11/45:05 am -
1 stop7h 24m
Sun 11/85:30 am -
1 stop5h 20m
Deal found 10/20![United Airlines logo]()
$419
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 October 24, 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 October 24, 2026.
This Southwest deal was found by Cheapflights users on 10/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/612:00 pm -
2 stops8h 10m
Sat 1/96:10 am -
1 stop5h 20m
Deal found 10/23![Southwest logo]()
$280
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/45:05 am -
1 stop7h 24m
Sun 11/85:30 am -
1 stop5h 20m
Deal found 10/22![United Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 10/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:42 pm -
1 stop5h 17m
Fri 10/305:00 am -
1 stop5h 08m
Deal found 10/19![American Airlines logo]()
$446
This Southwest deal was found by Cheapflights users on 10/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:30 pm -
1 stop6h 40m
Thu 12/103:55 pm -
1 stop4h 50m
Deal found 10/22![Southwest logo]()
$318
This Southwest deal was found by Cheapflights users on 10/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:50 pm -
1 stop4h 10m
Mon 11/235:15 am -
1 stop4h 55m
Deal found 10/23![Southwest logo]()
$380
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Wed 11/185:25 pm -
1 stop7h 20m
Mon 11/235:30 pm -
1 stop5h 18m
Deal found 10/23![United Airlines logo]()
$430
This American Airlines deal was found by Cheapflights users on 10/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:41 pm -
1 stop5h 18m
Sat 12/1910:05 pm -
1 stop11h 59m
Deal found 10/23![American Airlines logo]()
$462
This Southwest deal was found by Cheapflights users on 10/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1511:35 am -
1 stop8h 20m
Tue 12/221:40 pm -
1 stop10h 30m
Deal found 10/20![Southwest logo]()
$391
This United Airlines deal was found by Cheapflights users on 10/22. 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 1/224:35 pm -
2 stops19h 50m
Tue 1/263:55 pm -
1 stop6h 04m
Deal found 10/22![United Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 10/19. 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 10/285:25 pm -
1 stop6h 01m
Sun 11/19:21 am -
1 stop6h 40m
Deal found 10/19![United Airlines logo]()
$446
This Southwest deal was found by Cheapflights users on 10/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:30 pm -
1 stop6h 40m
Sun 11/85:15 am -
1 stop4h 55m
Deal found 10/22![Southwest logo]()
$419
This Southwest deal was found by Cheapflights users on 10/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:30 pm -
1 stop6h 35m
Sat 11/77:35 am -
1 stop4h 30m
Deal found 10/19![Southwest logo]()
$419
This American Airlines deal was found by Cheapflights users on 10/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:41 pm -
1 stop4h 36m
Tue 11/1011:33 am -
1 stop6h 38m
Deal found 10/23![American Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Wed 11/45:05 am -
2 stops8h 50m
Tue 11/102:31 pm -
2 stops8h 17m
Deal found 10/23![United Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 11/61:59 pm -
2 stops9h 00m
Mon 11/95:00 am -
2 stops8h 21m
Deal found 10/21![United Airlines logo]()
$487
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Wed 1/62:05 pm -
2 stops8h 54m
Sat 1/98:00 am -
2 stops7h 53m
Deal found 10/23![United Airlines logo]()
$489
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:41 pm -
1 stop4h 36m
Mon 11/95:03 pm -
2 stops17h 11m
Deal found 10/21![American Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Tue 10/275:05 am -
1 stop6h 12m
Sat 10/312:22 pm -
1 stop5h 25m
Deal found 10/19![United Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/211:59 pm -
1 stop7h 41m
Mon 11/309:21 am -
1 stop6h 40m
Deal found 10/20![United Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Tue 1/57:00 am -
2 stops8h 00m
Sat 1/99:18 am -
1 stop6h 35m
Deal found 10/23![United Airlines logo]()
$577
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 12/277:15 am -
2 stops15h 27m
Wed 12/306:15 am -
2 stops15h 44m
Deal found 10/23![United Airlines logo]()
$1,060
Last-minute flights from Harlingen to IllinoisDiscover last-minute flight deals from Harlingen to Illinois. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Harlingen to Illinois. Data last updated October 24, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:15 am -
2 stops7h 05m
Wed 10/283:30 pm -
1 stop5h 30m
Deal found 10/21![Southwest logo]()
$414
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:42 pm -
1 stop5h 17m
Fri 10/3012:11 pm -
1 stop6h 01m
Deal found 10/21![American Airlines logo]()
$446
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 11/35:05 am -
1 stop6h 12m
Tue 11/104:07 pm -
1 stop6h 41m
Deal found 10/20![United Airlines logo]()
$322
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Tue 11/35:05 am -
1 stop5h 06m
Sat 11/712:40 pm -
1 stop7h 07m
Deal found 10/19![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 10/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/311:35 am -
2 stops6h 10m
Sat 11/77:35 am -
1 stop7h 40m
Deal found 10/19![Southwest logo]()
$424
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 11/45:05 am -
1 stop7h 24m
Sun 11/85:30 am -
1 stop5h 20m
Deal found 10/20![United Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 10/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:30 pm -
1 stop6h 40m
Sun 11/85:15 am -
1 stop4h 55m
Deal found 10/20![Southwest logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/55:25 pm -
1 stop7h 20m
Thu 11/129:21 am -
1 stop6h 40m
Deal found 10/20![United Airlines logo]()
$332
This Southwest deal was found by Cheapflights users on 10/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:25 am -
2 stops9h 40m
Mon 11/235:15 am -
1 stop4h 55m
Deal found 10/23![Southwest logo]()
$371
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Wed 11/185:25 pm -
1 stop7h 20m
Mon 11/235:30 pm -
1 stop5h 18m
Deal found 10/23![United Airlines logo]()
$430
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 11/205:25 pm -
1 stop7h 20m
Fri 11/279:21 am -
1 stop6h 40m
Deal found 10/21![United Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 10/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:46 pm -
1 stop5h 34m
Sun 11/2910:03 am -
1 stop8h 13m
Deal found 10/20![American Airlines logo]()
$405
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 October 24, 2026.
Search for one-way flight options from Harlingen to Illinois. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Thu 12/172:05 pm -
1 stop5h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![United Airlines logo]()
$125
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:42 pm -
1 stop5h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![American Airlines logo]()
$205
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 11/241:59 pm -
1 stop7h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 11/175:05 am -
2 stops8h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Sun 12/612:00 pm -
2 stops10h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$385
This American Airlines deal was found by Cheapflights users on 10/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:44 am -
1 stop5h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![American Airlines logo]()
$422
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 10/275:05 am -
2 stops8h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$470
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Mon 11/91:59 pm -
2 stops8h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![United Airlines logo]()
$483
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 10/285:05 am -
2 stops7h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$511
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/65:40 am -
1 stop5h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![American Airlines logo]()
$515
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 October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $219 (United Airlines) |
One-way from | $125 (United Airlines) |
Popular in | January |
Cheapest in | November |
Average price | $468 |
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 7,457,451 searches. Data last updated October 24, 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
HarlingenChicago
HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl
HRLORD
Harlingen Valley Intl
Thu 12/17
2:05 pm-7:58 pm
1 stop5h 53m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$125
HarlingenChicago
HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl
HRLORD
Harlingen Valley Intl
Tue 11/24
1:59 pm-9:40 pm
1 stop7h 41m
Chicago O'Hare Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$260
HarlingenChicago
HRL Harlingen Valley Intl - MDW Chicago Midway
HRLMDW
Harlingen Valley Intl
Wed 1/6
12:00 pm-8:10 pm
2 stops8h 10m
Chicago Midway
Sat 1/9
6:10 am-11:30 am
1 stop5h 20m
$280
HarlingenChicago
HRL Harlingen Valley Intl - MDW Chicago Midway
HRLMDW
Harlingen Valley Intl
Mon 12/7
4:30 pm-11:10 pm
1 stop6h 40m
Chicago Midway
Thu 12/10
3:55 pm-8:45 pm
1 stop4h 50m
$318
HarlingenPeoria
HRL Harlingen Valley Intl - PIA Greater Peoria
HRLPIA
Harlingen Valley Intl
Tue 11/17
5:05 am-1:53 pm
2 stops8h 48m
Greater Peoria
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$334
HarlingenChicago
HRL Harlingen Valley Intl - MDW Chicago Midway
HRLMDW
Harlingen Valley Intl
Wed 11/18
12:50 pm-5:00 pm
1 stop4h 10m
Chicago Midway
Mon 11/23
5:15 am-10:10 am
1 stop4h 55m
$380
HarlingenMoline
HRL Harlingen Valley Intl - MLI Moline Quad-City
HRLMLI
Harlingen Valley Intl
Sun 12/6
12:00 pm-10:59 pm
2 stops10h 59m
Moline Quad-City
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$385
HarlingenChicago
HRL Harlingen Valley Intl - MDW Chicago Midway
HRLMDW
Harlingen Valley Intl
Tue 12/15
11:35 am-7:55 pm
1 stop8h 20m
Chicago Midway
Tue 12/22
1:40 pm-12:10 am
1 stop10h 30m
$391
HarlingenChicago
HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl
HRLORD
Harlingen Valley Intl
Wed 11/4
5:05 am-12:29 pm
1 stop7h 24m
Chicago O'Hare Intl
Sun 11/8
5:30 am-10:50 am
1 stop5h 20m
$419
HarlingenChicago
HRL Harlingen Valley Intl - MDW Chicago Midway
HRLMDW
Harlingen Valley Intl
Wed 11/4
4:30 pm-11:10 pm
1 stop6h 40m
Chicago Midway
Sun 11/8
5:15 am-10:10 am
1 stop4h 55m
$419
Showing 1-10 of 28 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
HRL-PIA
HRL-MLI
HRL-MDW
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
HRL-PIA
HRL-MLI
HRL-MDW
What is the cheapest month to book a flight from Harlingen to Illinois?
Currently, May is the cheapest month in which you can book a flight from Harlingen to Illinois (average of $298). Flying from Harlingen to Illinois in March is currently the most expensive (average of $540). 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?
Airfare is below average for this route at the moment.
Harlingen to Illinois flights typically cost between $281 and $477 in January.The cheapest round-trip price found within the last 5 days was $219 on United Airlines (Jan 6-Jan 9).
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 October 24, 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.
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.4
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.4
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.4
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.4
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Harlingen to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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
Other flight options
Popular flights
Top destinations
Alternative routes for Harlingen to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Harlingen to Illinois by cabin class
Find flights from Harlingen to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Harlingen and Illinois flights
Browse other Harlingen and Illinois flight options. Last updated on October 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Harlingen to Illinois flights
Consider these flights traveling from Harlingen to Illinois.
Top 2 airlines flying from Harlingen to Illinois
Discover the top 2 airlines that operate flights from Harlingen 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 October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$250 | Average$401 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$288 | Average$388 | FlexibilityNo cancel fee | On-time71% |