HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$135+ Cheap flights from Harlingen, TX (HRL) to Illinois

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ORD
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Harlingen to Illinois 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 Harlingen to Illinois

Cheapest flights from Harlingen to Illinois
Explore the most affordable flight options available from Harlingen to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:25 pm
HRL
-
ORD
1 stop7h 01m
United Airlines
Mon 3/94:00 pm
ORD
-
HRL
1 stop5h 56m
United Airlines
Deal found 1/19$293
This United Airlines deal was found by Cheapflights users on 1/18. 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.
Thu 8/205:15 am
HRL
-
ORD
1 stop4h 52m
United Airlines
Sun 8/237:45 am
ORD
-
HRL
1 stop7h 49m
United Airlines
Deal found 1/18$296
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/37:00 am
HRL
-
ORD
1 stop6h 00m
United Airlines
Sun 2/85:40 am
ORD
-
HRL
1 stop5h 46m
United Airlines
Deal found 1/19$309
This Southwest deal was found by Cheapflights users on 1/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:00 am
HRL
-
ORD
1 stop6h 15m
Southwest
Sat 3/284:15 pm
ORD
-
HRL
1 stop5h 10m
Southwest
Deal found 1/19$325
This Southwest deal was found by Cheapflights users on 1/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/187:00 am
HRL
-
ORD
1 stop6h 15m
Southwest
Fri 3/203:50 pm
ORD
-
HRL
1 stop6h 20m
Southwest
Deal found 1/19$335
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/265:25 pm
HRL
-
ORD
1 stop7h 03m
United Airlines
Tue 1/273:53 pm
ORD
-
HRL
1 stop6h 06m
United Airlines
Deal found 1/19$351
This Southwest deal was found by Cheapflights users on 1/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:55 am
HRL
-
ORD
1 stop6h 20m
Southwest
Sun 5/103:45 pm
ORD
-
HRL
1 stop7h 15m
Southwest
Deal found 1/19$369
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:10 pm
HRL
-
ORD
1 stop7h 43m
United Airlines
Sat 2/282:00 pm
ORD
-
HRL
1 stop7h 59m
United Airlines
Deal found 1/19$371
This Southwest deal was found by Cheapflights users on 1/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:00 am
HRL
-
ORD
1 stop6h 15m
Southwest
Fri 3/203:50 pm
ORD
-
HRL
1 stop6h 20m
Southwest
Deal found 1/19$379
This United Airlines deal was found by Cheapflights users on 1/17. 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.
Wed 6/175:16 pm
HRL
-
ORD
1 stop6h 54m
United Airlines
Fri 6/197:45 am
ORD
-
HRL
1 stop7h 49m
United Airlines
Deal found 1/17$382

Find flight deals from Harlingen to Illinois

Keep the following information in mind while searching for Harlingen to Illinois flight deals. Data was last updated January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$293
(United Airlines)

One-way from

$135
(American Airlines)

Popular in

January

Cheapest in

May

Average price

$514
Provider with most accurate pricing for Harlingen Valley Intl-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Harlingen Valley Intl-Chicago (CHI) flights.
Search Deals
From Harlingen Valley Intl to Illinois
Search Deals
One-way flight from Harlingen Valley Intl to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Illinois 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 January 20, 2026.
Use the filters below to find and compare flights from Harlingen to Illinois that are best for you.

Fly from

Harlingen

Fly to

Illinois

Route

Depart

Return

Price

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 3/5

5:25 pm-12:26 am

1 stop7h 01m

Chicago O'Hare Intl

Mon 3/9

4:00 pm-9:56 pm

1 stop5h 56m

$293

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 2/2

5:25 pm-10:58 pm

1 stop5h 33m

Chicago O'Hare Intl

Fri 2/6

5:40 am-11:26 am

1 stop5h 46m

$309

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 3/24

7:00 am-1:15 pm

1 stop6h 15m

Chicago O'Hare Intl

Sat 3/28

4:15 pm-9:25 pm

1 stop5h 10m

$325

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 3/18

7:00 am-1:15 pm

1 stop6h 15m

Chicago O'Hare Intl

Fri 3/20

3:50 pm-10:10 pm

1 stop6h 20m

$335

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 4/24

6:55 am-1:15 pm

1 stop6h 20m

Chicago O'Hare Intl

Sun 5/10

3:45 pm-11:00 pm

1 stop7h 15m

$369

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 2/24

12:10 pm-7:53 pm

1 stop7h 43m

Chicago O'Hare Intl

Sat 2/28

2:00 pm-9:59 pm

1 stop7h 59m

$371

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 2/23

6:46 pm-11:36 pm

1 stop4h 50m

$135

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 2/23

9:20 am-9:47 am

2 stops24h 27m

$294

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 2/16

5:22 pm-11:27 am

2 stops18h 05m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

Best time to book a flight from Harlingen to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Harlingen 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 Harlingen to Illinois

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

Currently, December is the cheapest month in which you can book a flight from Harlingen, Texas to Illinois (average of $136). Flying from Harlingen, Texas to Illinois in February is currently the most expensive (average of $328). 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.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated January 20, 2026.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Harlingen to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

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
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

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
9,183 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

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
11,164 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

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 Harlingen to Illinois. 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 from for flights from Harlingen to Illinois?

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

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

    There are many flights that can get you from Harlingen, Texas to Illinois in 6h 15m. Fly via United Airlines or Southwest to get the fastest option. The distance between Harlingen, Texas and Illinois is about 1220 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Harlingen to Illinois 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 Harlingen, Texas to Illinois?

    Currently, December is the cheapest month in which you can book a flight from Harlingen, Texas to Illinois (average of $136). Flying from Harlingen, Texas to Illinois in February is currently the most expensive (average of $328). 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 Harlingen to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to Las Vegas flights
Dallas/Fort Worth to Seattle flights
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to O'Hare Intl flights
Dallas/Fort Worth to Los Angeles flights
Dallas/Fort Worth to Denver flights
Dallas/Fort Worth to Orlando flights
Dallas/Fort Worth to Newark flights
Hobby to Denver flights
Hobby to Newark flights
Dallas/Fort Worth to San Francisco flights
Hobby to Los Angeles flights
Dallas/Fort Worth to Miami flights
Hobby to John F Kennedy Intl flights
Hobby to Las Vegas flights
Dallas/Fort Worth to Sky Harbor Intl flights
Austin to Las Vegas flights
Hobby to LaGuardia flights
Hobby to Seattle flights
Austin to John F Kennedy Intl flights
Dallas/Fort Worth to Fort Lauderdale flights
George Bush Intcntl to Denver flights
George Bush Intcntl to Los Angeles flights
George Bush Intcntl to Las Vegas flights
George Bush Intcntl to John F Kennedy Intl flights
Dallas/Fort Worth to Boston flights
Dallas/Fort Worth to Salt Lake City flights
Dallas/Fort Worth to Dulles Intl flights
Dallas/Fort Worth to Ontario flights
Love Field to Las Vegas flights
George Bush Intcntl to Newark flights
Dallas/Fort Worth to Santa Ana flights
San Antonio to Las Vegas flights
Dallas/Fort Worth to Baltimore flights
Austin to Seattle flights
George Bush Intcntl to Seattle flights
Austin to Newark flights
Dallas/Fort Worth to Midway flights
Dallas/Fort Worth to San Diego flights
Austin to Los Angeles flights
Dallas/Fort Worth to Atlanta flights
Austin to Denver flights
Dallas/Fort Worth to Hobby flights
Hobby to Sky Harbor Intl flights
Hobby to Miami flights
Hobby to Orlando flights
George Bush Intcntl to LaGuardia flights
Dallas/Fort Worth to Reagan-National flights
Dallas/Fort Worth to Honolulu flights

Top 3 airlines flying from Harlingen to Illinois

Discover the top 3 airlines that operate flights from Harlingen to Illinois. 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 January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$236Average$418FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$252Average$319FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$268Average$408FlexibilityNo cancel feeOn-time69%

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.