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$109+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ORD
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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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 December 4, 2025.

This Sun Country Air deal was found by Cheapflights users on 12/3. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:37 pmHRL - ORD
1 stop6h 07mSun Country Air
Wed 12/3111:45 amORD - HRL
1 stop23h 08mSun Country Air
Deal found 12/3$315
This Sun Country Air deal was found by Cheapflights users on 12/2. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:55 amHRL - ORD
1 stop21h 24mSun Country Air
Wed 12/3111:45 amORD - HRL
1 stop23h 08mSun Country Air
Deal found 12/2$375
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:41 pmHRL - ORD
1 stop5h 59mDelta
Thu 12/186:00 amORD - HRL
1 stop8h 46mDelta
Deal found 12/3$409
This Sun Country Air deal was found by Cheapflights users on 12/3. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:00 pmHRL - ORD
1 stop17h 44mSun Country Air
Fri 12/199:39 amORD - HRL
1 stop23h 43mSun Country Air
Deal found 12/3$425
This Mytrip deal was found by Cheapflights users on 12/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:37 pmHRL - ORD
1 stop6h 07mMultiple Airlines
Wed 12/3112:09 pmORD - HRL
2 stops22h 44mMultiple Airlines
Deal found 12/2$427
This American Airlines deal was found by Cheapflights users on 12/2. 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.
Wed 12/34:02 pmHRL - ORD
1 stop7h 33mAmerican Airlines
Wed 12/108:50 amORD - HRL
1 stop6h 40mAmerican Airlines
Deal found 12/2$439
This American Airlines deal was found by Cheapflights users on 12/2. 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 12/510:11 amHRL - ORD
1 stop5h 08mAmerican Airlines
Mon 12/85:18 amORD - HRL
1 stop6h 22mAmerican Airlines
Deal found 12/2$469
This Southwest deal was found by Cheapflights users on 12/4. 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 12/125:45 amHRL - ORD
2 stops7h 15mSouthwest
Mon 12/151:45 pmORD - HRL
2 stops7h 20mSouthwest
Deal found 12/4$484

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$159
(American Airlines)

One-way from

$109
(United Airlines)

Popular in

June

Cheapest in

May

Average price

$402
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. 3% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 4, 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

Tue 2/3

6:44 pm-11:44 pm

1 stop5h 00m

Chicago O'Hare Intl

Tue 2/10

3:23 pm-11:21 pm

1 stop7h 58m

$159

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 1/8

6:02 am-1:55 pm

1 stop7h 53m

Chicago O'Hare Intl

Wed 1/14

10:19 am-6:14 pm

1 stop7h 55m

$163

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 1/26

3:22 pm-10:09 pm

1 stop6h 47m

Chicago O'Hare Intl

Tue 1/27

10:19 am-6:14 pm

1 stop7h 55m

$214

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 2/14

2:43 pm-10:23 pm

1 stop7h 40m

Chicago O'Hare Intl

Wed 2/18

3:15 pm-10:52 pm

1 stop7h 37m

$243

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 1/9

6:44 pm-11:44 pm

1 stop5h 00m

Chicago O'Hare Intl

Mon 1/12

5:05 am-10:36 am

1 stop5h 31m

$252

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 3/23

6:50 am-2:20 pm

1 stop7h 30m

Chicago O'Hare Intl

Mon 3/30

3:50 pm-10:05 pm

1 stop6h 15m

$269

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 2/14

5:20 pm-12:26 am

1 stop7h 06m

Chicago O'Hare Intl

Wed 2/18

2:10 pm-9:59 pm

1 stop7h 49m

$297

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 1/8

12:10 pm-7:50 pm

1 stop7h 40m

Chicago O'Hare Intl

Wed 1/14

7:35 am-4:06 pm

1 stop8h 31m

$298

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 1/8

9:20 am-2:40 pm

1 stop5h 20m

$109

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 12/16

5:36 am-10:40 am

1 stop5h 04m

$126

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 14 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, December is the cheapest month in which you can book a flight from Harlingen, Texas to Illinois (average of $134). 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.

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 December 4, 2025.

When flying from Harlingen, Texas to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 33% versus a flight in the afternoon.

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 December 4, 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
4,250 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
9,066 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
11,047 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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. Fly via American Airlines to get the fastest option. The distance between Harlingen, Texas and Illinois is about 1220 mi.

  • 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 $134). 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

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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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$217Average$407FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$252Average$319FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$280Average$418FlexibilityNo cancel feeOn-time69%

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