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Harlingen

$150+ Cheap flights from Illinois to Harlingen, TX (HRL)

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HRL
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Illinois to Harlingen

Keep the following information in mind while searching for Illinois to Harlingen flight deals. Data was last updated September 17, 2025.

Round-trip from

$197
(American Airlines)

One-way from

$150
(Delta)

Popular in

November

Cheapest in

April

Average price

$471
From Illinois to Harlingen Valley Intl
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One-way flight from Illinois to Harlingen Valley Intl
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Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Illinois to Harlingen

Cheapest flights from Illinois to Harlingen
Explore the most affordable flight options available from Illinois to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/16. 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 10/255:17 pmORD - HRL
1 stop5h 47mAmerican Airlines
Tue 10/286:37 pmHRL - ORD
1 stop5h 05mAmerican Airlines
Deal found 9/16$251
This Southwest deal was found by Cheapflights users on 9/16. 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 10/234:20 pmORD - HRL
1 stop6h 15mSouthwest
Mon 10/2710:45 amHRL - ORD
1 stop10h 45mSouthwest
Deal found 9/16$274
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:30 amSTL - HRL
1 stop8h 15mSouthwest
Mon 10/610:45 amHRL - STL
1 stop4h 10mSouthwest
Deal found 9/15$279
This Southwest deal was found by Cheapflights users on 9/17. 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 10/224:20 pmORD - HRL
1 stop5h 20mSouthwest
Mon 10/277:00 amHRL - ORD
1 stop6h 05mSouthwest
Deal found 9/17$285
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/35:18 amSTL - HRL
1 stop4h 23mAmerican Airlines
Mon 10/66:20 pmHRL - STL
1 stop5h 29mAmerican Airlines
Deal found 9/16$289
This Sun Country Air deal was found by Cheapflights users on 9/16. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:00 pmORD - HRL
1 stop20h 48mSun Country Air
Sun 10/511:47 amHRL - ORD
1 stop22h 52mSun Country Air
Deal found 9/16$305
This American Airlines deal was found by Cheapflights users on 9/16. 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 9/305:16 pmORD - HRL
1 stop5h 41mAmerican Airlines
Fri 10/36:35 pmHRL - ORD
1 stop5h 24mAmerican Airlines
Deal found 9/16$319
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:30 amORD - HRL
2 stops7h 25mSouthwest
Mon 10/67:00 amHRL - ORD
1 stop6h 05mSouthwest
Deal found 9/15$324
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/12:21 pmORD - HRL
1 stop5h 18mUnited Airlines
Sun 11/97:00 amHRL - ORD
1 stop17h 15mUnited Airlines
Deal found 9/15$366
This Sun Country Air deal was found by Cheapflights users on 9/16. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:45 amORD - HRL
1 stop23h 08mSun Country Air
Sun 1/411:49 amHRL - ORD
1 stop7h 01mSun Country Air
Deal found 9/16$372
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/306:15 amSTL - HRL
1 stop7h 04mUnited Airlines
Fri 10/35:17 pmHRL - STL
1 stop4h 43mUnited Airlines
Deal found 9/16$405
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:04 amSTL - HRL
1 stop8h 15mDelta
Sun 12/283:14 pmHRL - STL
1 stop6h 54mDelta
Deal found 9/17$508

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Harlingen 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 September 17, 2025.
Use the filters below to find and compare flights from Illinois to Harlingen that are best for you.

Fly from

Illinois

Fly to

Harlingen

Route

Depart

Return

Price

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Tue 2/3

11:58 am-4:17 pm

1 stop4h 19m

Harlingen Valley Intl

Wed 2/11

12:07 pm-6:23 pm

1 stop6h 16m

$197

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sat 10/25

5:17 pm-11:04 pm

1 stop5h 47m

Harlingen Valley Intl

Tue 10/28

6:37 pm-11:42 pm

1 stop5h 05m

$251

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Thu 10/23

4:20 pm-10:35 pm

1 stop6h 15m

Harlingen Valley Intl

Mon 10/27

10:45 am-9:30 pm

1 stop10h 45m

$274

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 10/3

5:30 am-1:45 pm

1 stop8h 15m

Harlingen Valley Intl

Mon 10/6

10:45 am-6:00 pm

2 stops7h 15m

$285

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 10/22

4:20 pm-9:40 pm

1 stop5h 20m

Harlingen Valley Intl

Mon 10/27

7:00 am-1:05 pm

1 stop6h 05m

$285

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 10/3

5:18 am-9:41 am

1 stop4h 23m

Harlingen Valley Intl

Mon 10/6

6:20 pm-11:49 pm

1 stop5h 29m

$289

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Tue 9/30

5:16 pm-10:57 pm

1 stop5h 41m

Harlingen Valley Intl

Fri 10/3

6:35 pm-11:59 pm

1 stop5h 24m

$319

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 10/1

4:20 pm-9:25 pm

1 stop5h 05m

Harlingen Valley Intl

Mon 10/6

7:00 am-1:05 pm

1 stop6h 05m

$319

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sat 11/1

2:21 pm-7:39 pm

1 stop5h 18m

Harlingen Valley Intl

Sun 11/9

7:00 am-12:15 am

1 stop17h 15m

$366

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sun 10/12

3:10 pm-11:05 pm

1 stop7h 55m

Harlingen Valley Intl

Sun 10/19

6:50 am-4:25 pm

1 stop9h 35m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 22 results
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Best time to book a flight from Illinois to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Illinois with our price prediction graph.
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 Illinois to Harlingen

What is the cheapest month to book a flight from Illinois to Harlingen, Texas?

Currently, April is the cheapest month in which you can book a flight from Illinois to Harlingen, Texas (average of $267). Flying from Illinois to Harlingen, Texas in June is currently the most expensive (average of $382). 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.

What is the cheapest time of day to fly from IL to HRL?

Find hourly flight availability from Illinois to Harlingen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

When flying from Illinois to Harlingen, Texas, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Harlingen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Harlingen from Illinois?

    Most people fly into Harlingen Valley Intl (HRL) if they book a flight to Harlingen from Illinois. Valley Intl is conveniently located just 3.7 mi from Harlingen’s city center.

  • How long is the flight from Illinois to Harlingen, Texas?

    For as low as $197, American Airlines can have you in Harlingen, Texas from Illinois in 4h 19m. The distance between Illinois and Harlingen, Texas is about 962 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Illinois to Harlingen that include hotel bookings?

    Yes. In addition to deals on Illinois to Harlingen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Harlingen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Harlingen.

  • Can I find deals for business class flights from Illinois to Harlingen?

    Yes. Cheapflights offers flight deals from Illinois to Harlingen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Harlingen, Texas?

    Currently, April is the cheapest month in which you can book a flight from Illinois to Harlingen, Texas (average of $267). Flying from Illinois to Harlingen, Texas in June is currently the most expensive (average of $382). 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.

See more FAQs

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Alternative routes for Illinois to Harlingen

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Illinois to Harlingen

Discover the top 3 airlines that operate flights from Illinois to Harlingen. 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 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$208Average$382FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$226Average$445FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$267Average$552FlexibilityNo cancel feeOn-time71%

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