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Illinois

$185+ 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
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

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.
Fri 4/245:18 pm
HRL
-
ORD
1 stop7h 27m
United Airlines
Tue 4/282:05 pm
ORD
-
HRL
1 stop5h 35m
United Airlines
Deal found 2/3$211
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.
Mon 4/135:18 pm
HRL
-
ORD
1 stop5h 57m
United Airlines
Thu 4/165:48 am
ORD
-
HRL
1 stop5h 35m
United Airlines
Deal found 2/2$242
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/268:06 pm
HRL
-
ORD
1 stop4h 49m
American Airlines
Tue 3/310:49 am
ORD
-
HRL
1 stop7h 27m
American Airlines
Deal found 2/1$270
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Thu 2/268:06 pm
HRL
-
ORD
1 stop4h 49m
American Airlines
Thu 3/55:00 am
ORD
-
HRL
1 stop5h 12m
American Airlines
Deal found 1/31$289
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 4/136:55 am
HRL
-
ORD
1 stop6h 20m
Southwest
Thu 4/164:15 pm
ORD
-
HRL
2 stops6h 45m
Southwest
Deal found 2/2$315
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.
Fri 4/246:00 am
HRL
-
ORD
2 stops8h 20m
Southwest
Tue 4/283:45 pm
ORD
-
HRL
1 stop5h 10m
Southwest
Deal found 2/3$340
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.
Thu 3/196:50 am
HRL
-
ORD
1 stop7h 30m
Southwest
Sun 3/223:45 pm
ORD
-
HRL
2 stops8h 20m
Southwest
Deal found 2/2$350
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:22 pm
HRL
-
ORD
1 stop5h 42m
United Airlines
Tue 3/1012:45 pm
ORD
-
HRL
1 stop7h 11m
United Airlines
Deal found 2/3$351
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/179:20 am
HRL
-
ORD
1 stop5h 23m
United Airlines
Sat 2/215:45 am
ORD
-
HRL
1 stop5h 39m
United Airlines
Deal found 2/1$354
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:44 pm
HRL
-
ORD
1 stop5h 00m
American Airlines
Sun 2/155:00 am
ORD
-
HRL
1 stop5h 12m
American Airlines
Deal found 2/1$359
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 2/175:40 am
HRL
-
ORD
2 stops7h 20m
Southwest
Sat 2/213:05 pm
ORD
-
HRL
2 stops7h 45m
Southwest
Deal found 2/1$364

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$211
(United Airlines)

One-way from

$185
(United Airlines)

Popular in

January

Cheapest in

May

Average price

$349
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 February 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 February 3, 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

Fri 4/24

5:18 pm-12:45 am

1 stop7h 27m

Chicago O'Hare Intl

Tue 4/28

2:05 pm-7:40 pm

1 stop5h 35m

$211

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 4/13

5:18 pm-11:15 pm

1 stop5h 57m

Chicago O'Hare Intl

Thu 4/16

5:48 am-11:23 am

1 stop5h 35m

$242

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 2/26

8:06 pm-12:55 am

1 stop4h 49m

Chicago O'Hare Intl

Tue 3/3

10:49 am-6:16 pm

1 stop7h 27m

$270

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 2/26

8:06 pm-12:55 am

1 stop4h 49m

Chicago O'Hare Intl

Thu 3/5

5:00 am-10:12 am

1 stop5h 12m

$289

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 4/13

6:55 am-1:15 pm

1 stop6h 20m

Chicago O'Hare Intl

Thu 4/16

4:15 pm-11:00 pm

2 stops6h 45m

$315

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 4/24

6:00 am-2:20 pm

2 stops8h 20m

Chicago O'Hare Intl

Tue 4/28

3:45 pm-8:55 pm

1 stop5h 10m

$340

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 3/3

5:22 pm-11:04 pm

1 stop5h 42m

Chicago O'Hare Intl

Tue 3/10

12:45 pm-7:56 pm

1 stop7h 11m

$351

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 2/17

5:40 am-1:00 pm

2 stops7h 20m

Chicago O'Hare Intl

Sat 2/21

3:05 pm-10:50 pm

2 stops7h 45m

$364

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 2/13

7:00 am-12:37 pm

1 stop5h 37m

Chicago O'Hare Intl

Mon 2/16

5:45 am-11:24 am

1 stop5h 39m

$374

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 5/7

6:00 am-3:30 pm

2 stops9h 30m

Chicago O'Hare Intl

Sun 5/10

2:40 pm-11:00 pm

2 stops8h 20m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

Showing 1-10 of 13 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 $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 February 3, 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
4,272 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Overall

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
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Overall

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
9,236 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Overall

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
11,216 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Overall

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 4h 49m. Fly via United Airlines, American 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

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Alternative routes for Harlingen to Illinois

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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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$236Average$418FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$252Average$319FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$268Average$408FlexibilityNo cancel feeOn-time69%

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