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Harlingen

$119+ 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HRL
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
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 August 2, 2025.

Round-trip from

$217
(Southwest)

One-way from

$119
(Southwest)

Popular in

June

Cheapest in

September

Average price

$350
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. 14% potential increase in price ($61 potential increase over avg. RT price).
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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 August 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 August 2, 2025.

This Southwest deal was found by Cheapflights users on 7/31. 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 10/18:15 amSTL - HRL
1 stop5h 20mSouthwest
Fri 10/39:45 amHRL - STL
1 stop5h 00mSouthwest
Deal found 7/31$217
This Southwest deal was found by Cheapflights users on 8/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:20 pmORD - HRL
1 stop5h 10mSouthwest
Mon 9/86:40 amHRL - ORD
1 stop6h 25mSouthwest
Deal found 8/1$237
This American Airlines deal was found by Cheapflights users on 7/31. 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 9/266:00 amORD - HRL
1 stop8h 19mAmerican Airlines
Mon 9/296:35 pmHRL - ORD
1 stop5h 24mAmerican Airlines
Deal found 7/31$247
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Sun 8/247:00 amORD - HRL
1 stop6h 30mUnited Airlines
Wed 8/275:00 amHRL - ORD
1 stop5h 13mUnited Airlines
Deal found 8/1$252
This Sun Country Air deal was found by Cheapflights users on 7/31. 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 7/31$362
This United Airlines deal was found by Cheapflights users on 7/31. 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 12/236:00 amSTL - HRL
1 stop5h 13mUnited Airlines
Sun 12/285:00 amHRL - STL
1 stop4h 49mUnited Airlines
Deal found 7/31$448

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 August 2, 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 10/1

8:15 am-1:35 pm

1 stop5h 20m

Harlingen Valley Intl

Fri 10/3

9:45 am-2:45 pm

1 stop5h 00m

$217

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Thu 9/4

4:20 pm-9:30 pm

1 stop5h 10m

Harlingen Valley Intl

Mon 9/8

6:40 am-1:05 pm

1 stop6h 25m

$237

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Fri 9/26

6:00 am-2:19 pm

1 stop8h 19m

Harlingen Valley Intl

Mon 9/29

6:35 pm-11:59 pm

1 stop5h 24m

$247

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sun 8/24

7:00 am-1:30 pm

1 stop6h 30m

Harlingen Valley Intl

Wed 8/27

5:00 am-10:13 am

1 stop5h 13m

$252

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 12/31

11:45 am-10:53 am

1 stop23h 08m

Harlingen Valley Intl

Sun 1/4

11:49 am-6:50 pm

1 stop7h 01m

$362

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Tue 12/23

6:00 am-11:13 am

1 stop5h 13m

Harlingen Valley Intl

Sun 12/28

5:00 am-9:49 am

1 stop4h 49m

$448

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 10/3

3:25 pm-10:35 pm

1 stop7h 10m

$119

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Mon 8/25

5:20 pm-10:44 pm

1 stop5h 24m

$123

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Tue 9/2

4:20 pm-9:25 pm

1 stop5h 05m

$140

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Mon 8/25

3:58 pm-9:52 pm

1 stop5h 54m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 $381). 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 August 2, 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.

Reviews of airlines servicing Harlingen

Get insights into the airlines that provide service to Harlingen. 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 Harlingen. Reviews last updated August 2, 2025.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Illinois to Harlingen. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,904 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Sun Country Air
6.9
Okay
334 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

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

    $119 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $135 and $149, 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, 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 $381). 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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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 August 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$208Average$398FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$226Average$419FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$268Average$499FlexibilityNo cancel feeOn-time71%

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