What is the cheapest airline that flies from Harlingen Valley Intl to Illinois?

Southwest and American Airlines are the most popular carriers operating from Harlingen Valley Intl to Illinois

What airlines fly to Illinois?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from Harlingen, Texas according to our data. American Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Harlingen Valley Intl Airport to Illinois?

Prices for flights from Harlingen Valley Intl Airport to Illinois refresh daily.

How many operators does momondo search for flights from Harlingen Valley Intl Airport to Illinois?

The number of operators available for flights from Harlingen Valley Intl Airport to Illinois is 3 as of March 2026.

How old do you have to be to fly from Harlingen Valley Intl Airport to Illinois?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Harlingen Valley Intl Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$109 Cheap Flights from Harlingen to Illinois in 2026

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Find the cheapest flights from Harlingen, Texas to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:10 am - 1:15 pm

HRL

ORD

6h 05m

1 stop

3:45 pm - 8:35 pm

ORD

HRL

4h 50m

1 stop

$217Southwest

Tue, Apr 14 - Fri, Apr 17

7:10 am - 1:15 pm

HRL

ORD

6h 05m

1 stop

4:15 pm - 11:00 pm

ORD

HRL

6h 45m

2 stops

$222Southwest

Tue, Apr 14 - Fri, Apr 17

2:47 pm - 9:13 pm

HRL

ORD

6h 26m

1 stop

5:00 am - 10:17 am

ORD

HRL

5h 17m

1 stop

$254American Airlines

Wed, Apr 8 - Sun, Apr 12

5:18 pm - 12:45 am

HRL

ORD

7h 27m

1 stop

2:05 pm - 9:54 pm

ORD

HRL

7h 49m

1 stop

$262United Airlines

Mon, May 18 - Wed, May 27

6:50 am - 2:20 pm

HRL

ORD

7h 30m

1 stop

3:50 pm - 10:10 pm

ORD

HRL

6h 20m

1 stop

$267Southwest

Thu, Mar 26 - Mon, Mar 30

6:50 am - 2:20 pm

HRL

ORD

7h 30m

1 stop

4:15 pm - 12:05 am

ORD

HRL

7h 50m

2 stops

$272Southwest

Thu, Mar 26 - Mon, Mar 30

6:20 am - 6:25 pm

HRL

ORD

12h 05m

2 stops

4:15 pm - 11:00 pm

ORD

HRL

6h 45m

2 stops

$293Southwest

Tue, Apr 14 - Fri, Apr 17

5:18 pm - 11:15 pm

HRL

ORD

5h 57m

1 stop

2:10 pm - 8:00 pm

ORD

HRL

5h 50m

1 stop

$297United Airlines

Wed, Apr 29 - Sat, May 2

7:10 am - 1:15 pm

HRL

ORD

6h 05m

1 stop

3:45 pm - 11:50 pm

ORD

HRL

8h 05m

2 stops

$298Southwest

Wed, Apr 8 - Sun, Apr 12

2:47 pm - 10:45 pm

HRL

ORD

7h 58m

1 stop

5:00 am - 10:17 am

ORD

HRL

5h 17m

1 stop

$303American Airlines

Fri, Apr 10 - Sun, Apr 12

American Airlines flights from Harlingen, Texas to Illinois

Our best American Airlines deals on Harlingen, Texas to Illinois flight tickets

American Airlines

Apr 8

HRL2:47 pmHarlingen Valley Intl

6h 26m

1 stop

ORD9:13 pmChicago O'Hare Intl

Apr 12

ORD5:00 amChicago O'Hare Intl

5h 17m

1 stop

HRL10:17 amHarlingen Valley Intl

$254

American Airlines

Apr 10

HRL2:47 pmHarlingen Valley Intl

7h 58m

1 stop

ORD10:45 pmChicago O'Hare Intl

Apr 12

ORD5:00 amChicago O'Hare Intl

5h 17m

1 stop

HRL10:17 amHarlingen Valley Intl

$303

American Airlines

Mar 6

HRL8:06 pmHarlingen Valley Intl

4h 49m

1 stop

ORD12:55 amChicago O'Hare Intl

Mar 8

ORD11:45 amChicago O'Hare Intl

7h 51m

1 stop

HRL7:36 pmHarlingen Valley Intl

$378

Southwest flights from Harlingen, Texas to Illinois

Our best Southwest deals on Harlingen, Texas to Illinois flight tickets

Southwest

Apr 14

HRL7:10 amHarlingen Valley Intl

6h 05m

1 stop

ORD1:15 pmChicago O'Hare Intl

Apr 17

ORD3:45 pmChicago O'Hare Intl

4h 50m

1 stop

HRL8:35 pmHarlingen Valley Intl

$217

Southwest

Apr 14

HRL7:10 amHarlingen Valley Intl

6h 05m

1 stop

ORD1:15 pmChicago O'Hare Intl

Apr 17

ORD4:15 pmChicago O'Hare Intl

6h 45m

2 stops

HRL11:00 pmHarlingen Valley Intl

$222

Southwest

Mar 26

HRL6:50 amHarlingen Valley Intl

7h 30m

1 stop

ORD2:20 pmChicago O'Hare Intl

Mar 30

ORD3:50 pmChicago O'Hare Intl

6h 20m

1 stop

HRL10:10 pmHarlingen Valley Intl

$267

Fly from

Fly to

Route

Depart

Return

Price

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 4/14

7:10 am-1:15 pm

1 stop6h 05m

Chicago O'Hare Intl

Fri 4/17

3:45 pm-8:35 pm

1 stop4h 50m

$217

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 4/14

7:10 am-1:15 pm

1 stop6h 05m

Chicago O'Hare Intl

Fri 4/17

4:15 pm-11:00 pm

2 stops6h 45m

$222

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 4/8

2:47 pm-9:13 pm

1 stop6h 26m

Chicago O'Hare Intl

Sun 4/12

5:00 am-10:17 am

1 stop5h 17m

$254

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 5/18

5:18 pm-12:45 am

1 stop7h 27m

Chicago O'Hare Intl

Wed 5/27

2:05 pm-9:54 pm

1 stop7h 49m

$262

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 3/26

6:50 am-2:20 pm

1 stop7h 30m

Chicago O'Hare Intl

Mon 3/30

3:50 pm-10:10 pm

1 stop6h 20m

$267

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 3/26

6:50 am-2:20 pm

1 stop7h 30m

Chicago O'Hare Intl

Mon 3/30

4:15 pm-12:05 am

2 stops7h 50m

$272

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 4/14

6:20 am-6:25 pm

2 stops12h 05m

Chicago O'Hare Intl

Fri 4/17

4:15 pm-11:00 pm

2 stops6h 45m

$293

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 4/29

5:18 pm-11:15 pm

1 stop5h 57m

Chicago O'Hare Intl

Sat 5/2

2:10 pm-8:00 pm

1 stop5h 50m

$297

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 4/8

7:10 am-1:15 pm

1 stop6h 05m

Chicago O'Hare Intl

Sun 4/12

3:45 pm-11:50 pm

2 stops8h 05m

$298

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 4/10

2:47 pm-10:45 pm

1 stop7h 58m

Chicago O'Hare Intl

Sun 4/12

5:00 am-10:17 am

1 stop5h 17m

$303

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Harlingen, Texas to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Harlingen, Texas is in March. Flight prices, which tend to average around $216, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of March, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $257.

What is the cheapest Harlingen Valley Intl to Illinois flight route?

Fly from Harlingen Valley Intl to Chicago O'Hare Intl for the best Harlingen Valley Intl - Illinois flight prices

What cabin class options are available on Harlingen Valley Intl to Illinois flights?

There is only 1 cabin class available to choose from on Harlingen Valley Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Harlingen, Texas to Illinois flights?

You could potentially save up to 42% on your flight if you consider stops on a Harlingen, Texas to Illinois flight.

Cheap Harlingen, Texas to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen, Texas to Illinois

Fastest flight time	6h 05m
Direct flights	None

The fastest flight from Harlingen, Texas to Illinois takes 6h 05m

There are no direct flights from Harlingen, Texas to Illinois. There are no popular flight routes from Harlingen, Texas to Illinois.

Search flight deals

When did momondo last update prices for flights from Harlingen Valley Intl Airport to Illinois?
Prices for flights from Harlingen Valley Intl Airport to Illinois refresh daily.
How many operators does momondo search for flights from Harlingen Valley Intl Airport to Illinois?
The number of operators available for flights from Harlingen Valley Intl Airport to Illinois is 3 as of March 2026.
How old do you have to be to fly from Harlingen Valley Intl Airport to Illinois?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Harlingen Valley Intl Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Harlingen, Texas to Illinois

Compare and see reviews for airlines that fly from Harlingen, Texas to Illinois with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $236	Free Cancellation	Rating 7.1 11,378 reviews	Search American Airlines flights
Southwest	PriceFrom $252	Free Cancellation	Rating 8.0 4,304 reviews	Search Southwest flights
United Airlines	PriceFrom $268	Free Cancellation	Rating 7.4 9,382 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to Illinois?

It is quick and easy to find Harlingen to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from Harlingen to Illinois with flexible booking policies on momondo?

Yes. All flights to Illinois from Harlingen on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Harlingen to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Harlingen. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Harlingen to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Harlingen to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.