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Harlingen

$104+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HRL
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

This Southwest deal was found by Cheapflights users on 11/2. 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 12/45:50 pmSTL - HRL
1 stop4h 10mSouthwest
Tue 12/910:30 amHRL - STL
1 stop6h 45mSouthwest
Deal found 11/2$222
This Sun Country Air deal was found by Cheapflights users on 11/1. 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.
Thu 12/1811:45 amORD - HRL
1 stop23h 08mSun Country Air
Sun 12/2111:37 amHRL - ORD
1 stop22h 13mSun Country Air
Deal found 11/1$265
This Sun Country Air deal was found by Cheapflights users on 11/1. 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.
Thu 12/1811:45 amORD - HRL
1 stop23h 08mSun Country Air
Mon 12/2211:43 amHRL - ORD
1 stop22h 43mSun Country Air
Deal found 11/1$325
This Sun Country Air deal was found by Cheapflights users on 11/1. 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.
Fri 12/197:38 pmORD - HRL
1 stop13h 44mSun Country Air
Sun 12/2111:37 amHRL - ORD
1 stop22h 13mSun Country Air
Deal found 11/1$335
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/182:21 pmORD - HRL
1 stop5h 18mUnited Airlines
Sat 11/225:00 pmHRL - ORD
1 stop7h 15mUnited Airlines
Deal found 11/3$338
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/172:21 pmORD - HRL
1 stop7h 33mUnited Airlines
Mon 12/225:00 amHRL - ORD
1 stop7h 17mUnited Airlines
Deal found 11/1$349
This Southwest deal was found by Cheapflights users on 11/2. 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 11/107:10 pmSTL - HRL
1 stop4h 25mSouthwest
Mon 11/1711:30 amHRL - STL
1 stop9h 30mSouthwest
Deal found 11/2$359
This Delta deal was found by Cheapflights users on 11/1. 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.
Fri 12/198:50 amORD - HRL
1 stop5h 30mDelta
Mon 12/223:15 pmHRL - ORD
1 stop6h 19mDelta
Deal found 11/1$384
This Delta deal was found by Cheapflights users on 11/1. 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.
Fri 12/198:50 amORD - HRL
1 stop5h 30mDelta
Tue 12/233:15 pmHRL - ORD
1 stop18h 10mDelta
Deal found 11/1$392
This Southwest deal was found by Cheapflights users on 11/2. 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 11/62:40 pmSTL - HRL
1 stop4h 45mSouthwest
Mon 11/103:35 pmHRL - STL
1 stop3h 50mSouthwest
Deal found 11/2$409
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/88:50 amORD - HRL
1 stop6h 42mAmerican Airlines
Wed 11/125:40 amHRL - ORD
1 stop4h 57mAmerican Airlines
Deal found 11/1$409
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/178:59 amORD - HRL
2 stops10h 51mUnited Airlines
Tue 12/235:20 pmHRL - ORD
1 stop5h 17mUnited Airlines
Deal found 11/1$413

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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$212
(United Airlines)

One-way from

$104
(United Airlines)

Popular in

June

Cheapest in

April

Average price

$462
Provider with most accurate pricing for Chicago (CHI)-Harlingen Valley Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Harlingen Valley Intl flights.
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From Illinois to Harlingen Valley Intl
Search Deals
One-way flight from Illinois to Harlingen Valley Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
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 November 2025
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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 November 3, 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

Wed 1/14

6:00 am-11:26 am

1 stop5h 26m

Harlingen Valley Intl

Tue 1/20

5:25 pm-10:00 pm

1 stop4h 35m

$212

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Thu 12/4

5:50 pm-10:00 pm

1 stop4h 10m

Harlingen Valley Intl

Tue 12/9

10:30 am-5:15 pm

1 stop6h 45m

$222

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Tue 1/6

5:05 am-10:36 am

1 stop5h 31m

Harlingen Valley Intl

Tue 1/13

6:44 pm-11:44 pm

1 stop5h 00m

$251

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Thu 1/22

8:10 am-2:46 pm

1 stop6h 36m

Harlingen Valley Intl

Mon 1/26

6:44 pm-11:44 pm

1 stop5h 00m

$269

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Tue 11/18

10:35 am-3:59 pm

1 stop5h 24m

Harlingen Valley Intl

Sat 11/22

5:00 pm-12:15 am

1 stop7h 15m

$338

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Mon 11/10

7:10 pm-11:35 pm

1 stop4h 25m

Harlingen Valley Intl

Mon 11/17

11:30 am-9:00 pm

1 stop9h 30m

$359

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Tue 1/6

7:50 pm-4:06 pm

2 stops20h 16m

Harlingen Valley Intl

Tue 1/13

9:20 am-2:40 pm

1 stop5h 20m

$386

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Thu 1/22

3:53 pm-9:59 pm

1 stop6h 06m

Harlingen Valley Intl

Mon 1/26

12:10 pm-9:55 am

2 stops21h 45m

$396

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Thu 11/6

3:15 pm-11:35 pm

2 stops8h 20m

Harlingen Valley Intl

Mon 11/10

3:35 pm-10:45 pm

1 stop7h 10m

$414

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Fri 12/26

12:26 pm-8:58 am

1 stop20h 32m

Harlingen Valley Intl

Wed 12/31

11:49 am-5:14 pm

1 stop29h 25m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 27 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, January is the cheapest month in which you can book a flight from Illinois to Harlingen, Texas (average of $171). Flying from Illinois to Harlingen, Texas in May is currently the most expensive (average of $258). 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 November 3, 2025.

One of the essential ways to save on airfare from Illinois to Harlingen, Texas is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 45% on airfare.

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 $222, United Airlines can have you in Harlingen, Texas from Illinois in 4h 10m. 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.

  • What are the cheapest airlines to fly from Illinois to Harlingen, Texas one-way?

    $104 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Sun Country Air and American Airlines, with prices starting from $130 and $140, respectively.

  • 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, January is the cheapest month in which you can book a flight from Illinois to Harlingen, Texas (average of $171). Flying from Illinois to Harlingen, Texas in May is currently the most expensive (average of $258). 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.

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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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$208Average$374FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$226Average$389FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$267Average$388FlexibilityNo cancel feeOn-time71%

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