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$81+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Harlingen to Illinois

Keep the following information in mind while searching for Harlingen to Illinois flight deals. Data was last updated September 11, 2025.

Round-trip from

$161
(Southwest)

One-way from

$81
(Southwest)

Popular in

June

Cheapest in

May

Average price

$272
From Harlingen Valley Intl to Illinois
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One-way flight from Harlingen Valley Intl to Illinois
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Highest demand for flights based on searches. 7% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/10. 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.
Sat 10/257:30 amHRL - ORD
1 stop6h 55mSouthwest
Tue 10/284:20 pmORD - HRL
1 stop5h 20mSouthwest
Deal found 9/10$161
This Southwest deal was found by Cheapflights users on 9/9. 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 10/77:30 amHRL - ORD
1 stop8h 55mSouthwest
Sat 10/112:50 pmORD - HRL
1 stop5h 50mSouthwest
Deal found 9/9$166
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/286:37 pmHRL - ORD
1 stop5h 05mAmerican Airlines
Sat 11/16:45 amORD - HRL
1 stop7h 33mAmerican Airlines
Deal found 9/9$239
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 10/253:39 pmHRL - ORD
1 stop5h 40mDelta
Sat 11/18:57 amORD - HRL
1 stop5h 46mDelta
Deal found 9/10$241
This American Airlines deal was found by Cheapflights users on 9/10. 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 11/146:40 pmHRL - ORD
1 stop4h 57mAmerican Airlines
Wed 11/197:25 amORD - HRL
1 stop8h 07mAmerican Airlines
Deal found 9/10$260
This Southwest deal was found by Cheapflights users on 9/8. 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 11/145:45 amHRL - ORD
2 stops7h 15mSouthwest
Wed 11/192:15 pmORD - HRL
2 stops7h 40mSouthwest
Deal found 9/8$272
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/75:17 pmHRL - ORD
1 stop6h 57mUnited Airlines
Tue 10/145:50 pmORD - HRL
1 stop5h 28mUnited Airlines
Deal found 9/9$281
This American Airlines deal was found by Cheapflights users on 9/9. 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 9/276:35 pmHRL - ORD
1 stop5h 24mAmerican Airlines
Sat 10/44:18 pmORD - HRL
1 stop6h 39mAmerican Airlines
Deal found 9/9$285
This Southwest deal was found by Cheapflights users on 9/9. 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 10/87:30 amHRL - ORD
1 stop8h 55mSouthwest
Sun 10/123:10 pmORD - HRL
1 stop7h 55mSouthwest
Deal found 9/9$290
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/36:35 pmHRL - ORD
1 stop5h 24mAmerican Airlines
Mon 10/69:45 pmORD - HRL
1 stop11h 53mAmerican Airlines
Deal found 9/10$296

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 September 11, 2025.
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

Sat 10/25

7:30 am-2:25 pm

1 stop6h 55m

Chicago O'Hare Intl

Tue 10/28

4:20 pm-9:40 pm

1 stop5h 20m

$161

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 10/7

7:30 am-4:25 pm

1 stop8h 55m

Chicago O'Hare Intl

Sat 10/11

2:50 pm-8:40 pm

1 stop5h 50m

$166

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 10/28

6:37 pm-11:42 pm

1 stop5h 05m

Chicago O'Hare Intl

Sat 11/1

6:45 am-2:18 pm

1 stop7h 33m

$239

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 10/25

3:39 pm-9:19 pm

1 stop5h 40m

Chicago O'Hare Intl

Sat 11/1

8:57 am-2:43 pm

1 stop5h 46m

$241

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 11/14

5:45 am-1:00 pm

2 stops7h 15m

Chicago O'Hare Intl

Wed 11/19

2:15 pm-9:55 pm

2 stops7h 40m

$272

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 10/7

5:17 pm-12:14 am

1 stop6h 57m

Chicago O'Hare Intl

Tue 10/14

5:50 pm-11:18 pm

1 stop5h 28m

$281

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 9/27

6:35 pm-11:59 pm

1 stop5h 24m

Chicago O'Hare Intl

Sat 10/4

4:18 pm-10:57 pm

1 stop6h 39m

$285

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 10/8

7:30 am-4:25 pm

1 stop8h 55m

Chicago O'Hare Intl

Sun 10/12

3:10 pm-11:05 pm

1 stop7h 55m

$290

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 11/13

5:00 pm-12:15 am

1 stop7h 15m

Chicago O'Hare Intl

Mon 11/17

3:43 pm-9:54 pm

1 stop6h 11m

$313

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 9/26

6:35 pm-11:59 pm

1 stop5h 24m

Chicago O'Hare Intl

Tue 9/30

6:00 am-2:19 pm

1 stop8h 19m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 19 results
1
2

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, August is the cheapest month in which you can book a flight from Harlingen, Texas to Illinois (average of $245). Flying from Harlingen, Texas to Illinois in March is currently the most expensive (average of $321). 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 HRL to IL?

Find hourly flight availability from Harlingen to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Harlingen, Texas to Illinois, 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 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 September 11, 2025.
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
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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 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 5h 05m. Fly via Southwest, American Airlines, or Delta 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, August is the cheapest month in which you can book a flight from Harlingen, Texas to Illinois (average of $245). Flying from Harlingen, Texas to Illinois in March is currently the most expensive (average of $321). 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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Alternative routes for Harlingen to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$217Average$392FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$252Average$316FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$288Average$393FlexibilityNo cancel feeOn-time69%

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