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Harlingen

$117+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HRL
Jan 19 — Jan 261
Mon 1/19
Mon 1/26
1 adult, Economy
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Cheap 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 December 20, 2025.

This Delta deal was found by Cheapflights users on 12/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:05 amSTL - HRL
1 stop8h 15mDelta
Sun 12/283:15 pmHRL - STL
1 stop7h 01mDelta
Deal found 12/19$489
This American Airlines deal was found by Cheapflights users on 12/20. 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 12/235:16 amSTL - HRL
1 stop4h 24mAmerican Airlines
Sun 12/282:48 pmHRL - STL
1 stop4h 34mAmerican Airlines
Deal found 12/20$506
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:35 amORD - HRL
1 stop8h 01mUnited Airlines
Wed 1/75:25 pmHRL - ORD
1 stop5h 33mUnited Airlines
Deal found 12/17$515
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:35 amORD - HRL
1 stop8h 01mUnited Airlines
Thu 1/89:20 amHRL - ORD
1 stop5h 20mUnited Airlines
Deal found 12/17$524
This United Airlines deal was found by Cheapflights users on 12/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:35 amORD - HRL
1 stop8h 01mUnited Airlines
Tue 12/235:00 amHRL - ORD
1 stop6h 02mUnited Airlines
Deal found 12/18$529
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:20 pmORD - HRL
1 stop25h 16mUnited Airlines
Wed 1/75:25 pmHRL - ORD
1 stop5h 33mUnited Airlines
Deal found 12/17$563
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:20 pmORD - HRL
1 stop25h 16mUnited Airlines
Thu 1/812:10 pmHRL - ORD
1 stop4h 56mUnited Airlines
Deal found 12/17$572
This Delta deal was found by Cheapflights users on 12/17. 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.
Mon 12/296:35 amORD - HRL
1 stop7h 45mDelta
Thu 1/83:39 pmHRL - ORD
2 stops19h 16mDelta
Deal found 12/17$577
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:35 amORD - HRL
1 stop8h 01mUnited Airlines
Tue 1/65:25 pmHRL - ORD
1 stop5h 33mUnited Airlines
Deal found 12/17$579
This United Airlines deal was found by Cheapflights users on 12/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:35 amORD - HRL
1 stop8h 01mUnited Airlines
Fri 1/25:20 pmHRL - ORD
1 stop5h 17mUnited Airlines
Deal found 12/18$594
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/298:08 pmORD - HRL
2 stops15h 05mUnited Airlines
Wed 1/75:25 pmHRL - ORD
1 stop5h 33mUnited Airlines
Deal found 12/17$617
This Southwest deal was found by Cheapflights users on 12/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/263:05 pmORD - HRL
2 stops8h 50mSouthwest
Mon 12/295:50 amHRL - ORD
2 stops7h 10mSouthwest
Deal found 12/18$619

Find flight deals from Illinois to Harlingen

Keep the following information in mind while searching for Illinois to Harlingen flight deals. Data was last updated December 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$234
(United Airlines)

One-way from

$117
(United Airlines)

Popular in

June

Cheapest in

April

Average price

$351
Provider with most accurate pricing for Chicago (CHI)-Harlingen Valley Intl flight deals.
Search Deals
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. 12% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
Search Deals

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 December 20, 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

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sat 1/10

5:37 am-11:26 am

1 stop5h 49m

Harlingen Valley Intl

Sat 1/17

12:10 pm-7:50 pm

1 stop7h 40m

$234

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 2/18

2:00 pm-9:59 pm

1 stop7h 59m

Harlingen Valley Intl

Wed 2/25

5:20 pm-12:26 am

1 stop7h 06m

$234

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Sat 2/7

3:54 pm-11:21 pm

1 stop7h 27m

Harlingen Valley Intl

Sat 4/4

10:42 am-5:13 pm

1 stop6h 31m

$241

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Sat 2/7

6:00 am-11:26 am

1 stop5h 26m

Harlingen Valley Intl

Sun 2/8

5:25 pm-10:00 pm

1 stop4h 35m

$241

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 1/14

3:53 pm-9:59 pm

1 stop6h 06m

Harlingen Valley Intl

Wed 1/21

9:20 am-2:40 pm

1 stop5h 20m

$251

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 1/21

5:40 am-11:26 am

1 stop5h 46m

Harlingen Valley Intl

Tue 2/3

5:25 pm-10:59 pm

1 stop5h 34m

$251

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Thu 1/22

3:53 pm-9:59 pm

1 stop6h 06m

Harlingen Valley Intl

Tue 1/27

12:10 pm-5:06 pm

1 stop4h 56m

$260

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sun 1/11

3:53 pm-9:59 pm

1 stop6h 06m

Harlingen Valley Intl

Wed 1/28

7:00 am-1:00 pm

1 stop6h 00m

$260

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sun 1/25

10:35 am-4:06 pm

1 stop5h 31m

Harlingen Valley Intl

Wed 2/4

5:25 pm-10:58 pm

1 stop5h 33m

$260

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Thu 1/22

5:05 am-10:36 am

1 stop5h 31m

Harlingen Valley Intl

Mon 1/26

3:22 pm-10:09 pm

1 stop6h 47m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 30 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 $179). Flying from Illinois to Harlingen, Texas in December is currently the most expensive (average of $281). 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 December 20, 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 $234, United Airlines can have you in Harlingen, Texas from Illinois in 5h 49m. The distance between Illinois and Harlingen, Texas is about 1220 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?

    $108 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $108 and $108, 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 $179). Flying from Illinois to Harlingen, Texas in December is currently the most expensive (average of $281). 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 December 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$208Average$355FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$226Average$385FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$267Average$357FlexibilityNo cancel feeOn-time71%

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