HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Harlingen

$145+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HRL
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Harlingen 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 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 February 4, 2026.

This Southwest deal was found by Cheapflights users on 2/2. 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 3/303:50 pm
ORD
-
HRL
1 stop6h 20m
Southwest
Tue 4/77:10 am
HRL
-
ORD
1 stop6h 05m
Southwest
Deal found 2/2$211
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:29 am
STL
-
HRL
1 stop8h 40m
Delta
Sat 4/114:04 pm
HRL
-
STL
1 stop7h 21m
Delta
Deal found 2/2$248
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:25 am
ORD
-
HRL
1 stop8h 40m
Delta
Mon 4/204:02 pm
HRL
-
ORD
1 stop5h 36m
Delta
Deal found 2/2$279
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:12 am
STL
-
HRL
1 stop5h 00m
American Airlines
Tue 3/1710:42 am
HRL
-
STL
1 stop6h 31m
American Airlines
Deal found 2/2$290
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/44:03 pm
ORD
-
HRL
1 stop5h 56m
United Airlines
Tue 4/75:18 pm
HRL
-
ORD
1 stop7h 27m
United Airlines
Deal found 2/2$291
This Southwest deal was found by Cheapflights users on 2/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/162:40 pm
ORD
-
HRL
2 stops9h 25m
Southwest
Fri 3/206:50 am
HRL
-
ORD
1 stop7h 30m
Southwest
Deal found 2/3$295
This Southwest deal was found by Cheapflights users on 2/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2212:40 pm
STL
-
HRL
1 stop10h 50m
Southwest
Wed 2/256:30 am
HRL
-
STL
1 stop5h 05m
Southwest
Deal found 2/3$299
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/205:00 am
ORD
-
HRL
1 stop5h 12m
American Airlines
Fri 2/278:06 pm
HRL
-
ORD
1 stop4h 49m
American Airlines
Deal found 2/2$299
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Wed 5/64:00 pm
ORD
-
HRL
1 stop5h 59m
United Airlines
Mon 5/115:18 pm
HRL
-
ORD
1 stop7h 27m
United Airlines
Deal found 2/3$303
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:15 am
STL
-
HRL
2 stops10h 44m
United Airlines
Sat 4/115:18 pm
HRL
-
STL
1 stop5h 10m
United Airlines
Deal found 2/2$306
This Southwest deal was found by Cheapflights users on 2/1. 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.
Tue 2/175:00 pm
STL
-
HRL
1 stop5h 15m
Southwest
Sat 2/215:25 pm
HRL
-
STL
1 stop4h 25m
Southwest
Deal found 2/1$309
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1610:49 am
ORD
-
HRL
1 stop7h 27m
American Airlines
Thu 2/198:06 pm
HRL
-
ORD
1 stop4h 49m
American Airlines
Deal found 2/2$309

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 February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$211
(Southwest)

One-way from

$145
(American Airlines)

Popular in

August

Cheapest in

April

Average price

$331
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.
Search Deals
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. 18% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 4, 2026.
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

Fri 4/17

6:25 am-3:05 pm

1 stop8h 40m

Harlingen Valley Intl

Mon 4/20

4:02 pm-9:38 pm

1 stop5h 36m

$279

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 4/15

5:48 am-11:23 am

1 stop5h 35m

Harlingen Valley Intl

Sat 4/18

5:18 pm-11:15 pm

1 stop5h 57m

$291

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sat 4/25

10:35 am-4:04 pm

1 stop5h 29m

Harlingen Valley Intl

Tue 4/28

5:18 pm-11:15 pm

1 stop5h 57m

$291

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 4/22

5:48 am-11:23 am

1 stop5h 35m

Harlingen Valley Intl

Sat 4/25

7:00 am-12:57 pm

1 stop5h 57m

$291

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sat 4/11

2:05 pm-7:40 pm

1 stop5h 35m

Harlingen Valley Intl

Tue 4/14

5:18 pm-11:15 pm

1 stop5h 57m

$291

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sat 4/4

4:03 pm-9:59 pm

1 stop5h 56m

Harlingen Valley Intl

Tue 4/7

5:18 pm-12:45 am

1 stop7h 27m

$291

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Mon 3/16

2:40 pm-12:05 am

2 stops9h 25m

Harlingen Valley Intl

Fri 3/20

6:50 am-2:20 pm

1 stop7h 30m

$295

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Fri 2/20

5:00 am-10:12 am

1 stop5h 12m

Harlingen Valley Intl

Fri 2/27

8:06 pm-12:55 am

1 stop4h 49m

$299

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Sun 2/22

12:40 pm-11:30 pm

1 stop10h 50m

Harlingen Valley Intl

Wed 2/25

6:30 am-11:35 am

1 stop5h 05m

$299

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Tue 4/7

11:15 am-9:59 pm

2 stops10h 44m

Harlingen Valley Intl

Sat 4/11

5:18 pm-10:28 pm

1 stop5h 10m

$306

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 27 results
1
2
3

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, November is the cheapest month in which you can book a flight from Illinois to Harlingen, Texas (average of $185). Flying from Illinois to Harlingen, Texas in December is currently the most expensive (average of $277). 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.

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 $273, Southwest can have you in Harlingen, Texas from Illinois in 6h 11m. 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 United Airlines. You may also be able to find cheap deals on American Airlines and Southwest, 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, November is the cheapest month in which you can book a flight from Illinois to Harlingen, Texas (average of $185). Flying from Illinois to Harlingen, Texas in December is currently the most expensive (average of $277). 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

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 for Illinois to Harlingen

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Dallas/Fort Worth flights
O'Hare Intl to Dallas/Fort Worth flights
Newark to Dallas/Fort Worth flights
John F Kennedy Intl to Hobby flights
LaGuardia to Hobby flights
Dulles Intl to Dallas/Fort Worth flights
Newark to Hobby flights
John F Kennedy Intl to George Bush Intcntl flights
John F Kennedy Intl to Austin flights
Newark to George Bush Intcntl flights
Baltimore to Dallas/Fort Worth flights
Boston to Dallas/Fort Worth flights
Seattle to Dallas/Fort Worth flights
Detroit to Dallas/Fort Worth flights
San Francisco to Dallas/Fort Worth flights
Reagan-National to Hobby flights
Los Angeles to Hobby flights
LaGuardia to George Bush Intcntl flights
Los Angeles to Dallas/Fort Worth flights
Reagan-National to Dallas/Fort Worth flights
Ontario to Dallas/Fort Worth flights
Dulles Intl to Hobby flights
Newark to Austin flights
Los Angeles to George Bush Intcntl flights
Baltimore to Hobby flights
Philadelphia to Hobby flights
Midway to Dallas/Fort Worth flights
O'Hare Intl to Austin flights
Denver to Dallas/Fort Worth flights
Reagan-National to George Bush Intcntl flights
Atlanta to Dallas/Fort Worth flights
Minneapolis to Dallas/Fort Worth flights
Boston to Austin flights
Dulles Intl to George Bush Intcntl flights
Atlanta to Hobby flights
Boston to Hobby flights
Los Angeles to Austin flights
Raleigh to Dallas/Fort Worth flights
Dulles Intl to Austin flights
Charlotte to Hobby flights
Philadelphia to George Bush Intcntl flights
LaGuardia to Austin flights
Seattle to Hobby flights
Minneapolis to Hobby flights
Philadelphia to Dallas/Fort Worth flights
Denver to Hobby flights
O'Hare Intl to George Bush Intcntl flights
O'Hare Intl to Hobby flights
Salt Lake City to Dallas/Fort Worth flights

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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$222Average$345FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$251Average$359FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$278Average$348FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.