What airlines fly to Illinois?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from Harlingen according to our data. American Airlines is the first choice among our users, with 49% 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.

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

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

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 April 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.

$129 Cheap Flights from Harlingen to Illinois in 2026

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Find the cheapest flights from Harlingen to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:15 am - 10:14 am

HRL

ORD

4h 59m

1 stop

7:30 am - 3:34 pm

ORD

HRL

8h 04m

1 stop

$269United Airlines

Tue, Sep 15 - Thu, Sep 17

12:05 pm - 8:07 pm

HRL

ORD

8h 02m

1 stop

2:09 pm - 8:00 pm

ORD

HRL

5h 51m

1 stop

$276United Airlines

Sat, May 9 - Sat, May 16

5:18 pm - 12:45 am

HRL

ORD

7h 27m

1 stop

4:00 pm - 9:59 pm

ORD

HRL

5h 59m

1 stop

$277United Airlines

Sat, May 9 - Wed, May 13

4:02 pm - 9:38 pm

HRL

ORD

5h 36m

1 stop

6:25 am - 3:05 pm

ORD

HRL

8h 40m

1 stop

$307Delta

Fri, May 1 - Sun, May 3

4:57 pm - 12:42 am

HRL

ORD

7h 45m

1 stop

5:00 am - 10:13 am

ORD

HRL

5h 13m

1 stop

$320American Airlines

Wed, May 27 - Fri, May 29

4:57 pm - 12:42 am

HRL

ORD

7h 45m

1 stop

5:00 am - 10:13 am

ORD

HRL

5h 13m

1 stop

$328American Airlines

Tue, Jun 2 - Tue, Jun 9

4:57 pm - 12:35 am

HRL

ORD

7h 38m

1 stop

5:00 am - 10:13 am

ORD

HRL

5h 13m

1 stop

$337American Airlines

Thu, Jun 11 - Tue, Jun 16

2:51 pm - 10:20 pm

HRL

ORD

7h 29m

1 stop

5:00 am - 10:17 am

ORD

HRL

5h 17m

1 stop

$338American Airlines

Fri, May 8 - Mon, May 11

5:15 am - 11:19 am

HRL

ORD

6h 04m

1 stop

8:51 am - 3:34 pm

ORD

HRL

6h 43m

1 stop

$347United Airlines

Tue, Sep 1 - Wed, Sep 2

2:00 pm - 9:37 pm

HRL

ORD

7h 37m

1 stop

7:30 am - 1:14 pm

ORD

HRL

5h 44m

1 stop

$351United Airlines

Tue, Sep 1 - Wed, Sep 2

American Airlines flights from Harlingen to Illinois

Our best American Airlines deals on Harlingen to Illinois flight tickets

American Airlines

May 27

HRL4:57 pmHarlingen Valley Intl

7h 45m

1 stop

ORD12:42 amChicago O'Hare Intl

May 29

ORD5:00 amChicago O'Hare Intl

5h 13m

1 stop

HRL10:13 amHarlingen Valley Intl

$320

American Airlines

Jun 2

HRL4:57 pmHarlingen Valley Intl

7h 45m

1 stop

ORD12:42 amChicago O'Hare Intl

Jun 9

ORD5:00 amChicago O'Hare Intl

5h 13m

1 stop

HRL10:13 amHarlingen Valley Intl

$328

American Airlines

Jun 11

HRL4:57 pmHarlingen Valley Intl

7h 38m

1 stop

ORD12:35 amChicago O'Hare Intl

Jun 16

ORD5:00 amChicago O'Hare Intl

5h 13m

1 stop

HRL10:13 amHarlingen Valley Intl

$337

Southwest flights from Harlingen to Illinois

Our best Southwest deals on Harlingen to Illinois flight tickets

Southwest

May 3

HRL7:00 amHarlingen Valley Intl

6h 15m

1 stop

ORD1:15 pmChicago O'Hare Intl

May 8

ORD3:45 pmChicago O'Hare Intl

4h 50m

1 stop

HRL8:35 pmHarlingen Valley Intl

$357

Southwest

May 8

HRL6:55 amHarlingen Valley Intl

6h 20m

1 stop

ORD1:15 pmChicago O'Hare Intl

May 11

ORD4:15 pmChicago O'Hare Intl

6h 45m

2 stops

HRL11:00 pmHarlingen Valley Intl

$372

Southwest

May 9

HRL7:00 amHarlingen Valley Intl

8h 30m

2 stops

ORD3:30 pmChicago O'Hare Intl

May 16

ORD2:05 pmChicago O'Hare Intl

7h 30m

2 stops

HRL9:35 pmHarlingen Valley Intl

$387

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 9/15

5:15 am-10:14 am

1 stop4h 59m

Chicago O'Hare Intl

Thu 9/17

7:30 am-3:34 pm

1 stop8h 04m

$269

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 5/9

12:05 pm-8:07 pm

1 stop8h 02m

Chicago O'Hare Intl

Sat 5/16

2:09 pm-8:00 pm

1 stop5h 51m

$276

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 5/9

5:18 pm-12:45 am

1 stop7h 27m

Chicago O'Hare Intl

Wed 5/13

4:00 pm-9:59 pm

1 stop5h 59m

$277

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 5/1

4:02 pm-9:38 pm

1 stop5h 36m

Chicago O'Hare Intl

Sun 5/3

6:25 am-3:05 pm

1 stop8h 40m

$307

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 5/27

4:57 pm-12:42 am

1 stop7h 45m

Chicago O'Hare Intl

Fri 5/29

5:00 am-10:13 am

1 stop5h 13m

$320

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 6/2

4:57 pm-12:42 am

1 stop7h 45m

Chicago O'Hare Intl

Tue 6/9

5:00 am-10:13 am

1 stop5h 13m

$328

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 6/11

4:57 pm-12:35 am

1 stop7h 38m

Chicago O'Hare Intl

Tue 6/16

5:00 am-10:13 am

1 stop5h 13m

$337

Quickest round-trip

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 5/8

2:51 pm-10:20 pm

1 stop7h 29m

Chicago O'Hare Intl

Mon 5/11

5:00 am-10:17 am

1 stop5h 17m

$338

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 9/1

5:15 am-11:19 am

1 stop6h 04m

Chicago O'Hare Intl

Wed 9/2

8:51 am-3:34 pm

1 stop6h 43m

$347

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 9/1

2:00 pm-9:37 pm

1 stop7h 37m

Chicago O'Hare Intl

Wed 9/2

7:30 am-1:14 pm

1 stop5h 44m

$351

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 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 is in August. Flight prices, which tend to average around $281, 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 August, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $283.

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 to Illinois flights?

You could potentially save up to 32% on your flight if you consider stops on a Harlingen to Illinois flight.

Cheap Harlingen to Illinois flight deals and tips

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

Fastest flight time	4h 59m
Direct flights	None

The fastest flight from Harlingen to Illinois takes 4h 59m

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

Search flight deals

Frequently asked questions about flying from Harlingen to Illinois

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 April 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 to Illinois

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.4 9,607 reviews	Search United Airlines flights
Southwest	PriceFrom $252	Free Cancellation	Rating 8.0 4,330 reviews	Search Southwest flights
American Airlines	PriceFrom $259	Free Cancellation	Rating 7.1 11,628 reviews	Search American 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.