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

American Airlines and United 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 according to our data. American Airlines is the first choice among our users, with 50% 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 June 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.

$165 Cheap Flights from Harlingen to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

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.

2:00 pm - 9:34 pm

HRL

ORD

7h 34m

1 stop

6:00 am - 1:31 pm

ORD

HRL

7h 31m

1 stop

$294Delta

Thu, Oct 8 - Sun, Oct 11

2:00 pm - 9:34 pm

HRL

ORD

7h 34m

1 stop

6:00 am - 1:31 pm

ORD

HRL

7h 31m

1 stop

$301Delta

Thu, Oct 15 - Sun, Oct 18

1:59 pm - 9:32 pm

HRL

ORD

7h 33m

1 stop

6:30 am - 1:24 pm

ORD

HRL

6h 54m

1 stop

$305United Airlines

Sat, Aug 15 - Thu, Aug 20

2:00 pm - 9:34 pm

HRL

ORD

7h 34m

1 stop

6:00 am - 1:31 pm

ORD

HRL

7h 31m

1 stop

$329Delta

Thu, Oct 8 - Sun, Oct 11

2:00 pm - 9:34 pm

HRL

ORD

7h 34m

1 stop

6:00 am - 1:31 pm

ORD

HRL

7h 31m

1 stop

$339Delta

Thu, Oct 8 - Sun, Oct 11

5:18 pm - 12:50 am

HRL

ORD

7h 32m

1 stop

5:00 am - 10:12 am

ORD

HRL

5h 12m

1 stop

$350American Airlines

Sat, Jul 18 - Tue, Jul 28

2:00 pm - 11:50 pm

HRL

ORD

9h 50m

2 stops

6:00 am - 1:31 pm

ORD

HRL

7h 31m

1 stop

$359Delta

Mon, Nov 16 - Mon, Nov 23

4:58 pm - 12:50 am

HRL

ORD

7h 52m

1 stop

5:00 am - 10:12 am

ORD

HRL

5h 12m

1 stop

$360American Airlines

Fri, Jul 24 - Sat, Aug 1

5:10 am - 10:07 am

HRL

ORD

4h 57m

1 stop

6:00 am - 10:59 am

ORD

HRL

4h 59m

1 stop

$362United Airlines

Tue, Nov 3 - Wed, Nov 4

4:58 pm - 11:39 pm

HRL

ORD

6h 41m

1 stop

5:00 am - 10:12 am

ORD

HRL

5h 12m

1 stop

$370American Airlines

Mon, Jul 13 - Wed, Jul 15

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United Airlines flights from Harlingen to Illinois

Our best United Airlines deals on Harlingen to Illinois flight tickets

United Airlines

Aug 15

HRL1:59 pmHarlingen Valley Intl

7h 33m

1 stop

ORD9:32 pmChicago O'Hare Intl

Aug 20

ORD6:30 amChicago O'Hare Intl

6h 54m

1 stop

HRL1:24 pmHarlingen Valley Intl

$305

United Airlines

Nov 3

HRL5:10 amHarlingen Valley Intl

4h 57m

1 stop

ORD10:07 amChicago O'Hare Intl

Nov 4

ORD6:00 amChicago O'Hare Intl

4h 59m

1 stop

HRL10:59 amHarlingen Valley Intl

$362

United Airlines

Jun 16

HRL5:10 amHarlingen Valley Intl

5h 10m

1 stop

ORD10:20 amChicago O'Hare Intl

Jun 23

ORD8:51 amChicago O'Hare Intl

7h 08m

1 stop

HRL3:59 pmHarlingen Valley Intl

$382

American Airlines flights from Harlingen to Illinois

Our best American Airlines deals on Harlingen to Illinois flight tickets

American Airlines

Jul 18

HRL5:18 pmHarlingen Valley Intl

7h 32m

1 stop

ORD12:50 amChicago O'Hare Intl

Jul 28

ORD5:00 amChicago O'Hare Intl

5h 12m

1 stop

HRL10:12 amHarlingen Valley Intl

$350

American Airlines

Jul 24

HRL4:58 pmHarlingen Valley Intl

7h 52m

1 stop

ORD12:50 amChicago O'Hare Intl

Aug 1

ORD5:00 amChicago O'Hare Intl

5h 12m

1 stop

HRL10:12 amHarlingen Valley Intl

$360

American Airlines

Jul 13

HRL4:58 pmHarlingen Valley Intl

6h 41m

1 stop

ORD11:39 pmChicago O'Hare Intl

Jul 15

ORD5:00 amChicago O'Hare Intl

5h 12m

1 stop

HRL10:12 amHarlingen Valley Intl

$370

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 10/8

2:00 pm-9:34 pm

1 stop7h 34m

Chicago O'Hare Intl

Sun 10/11

6:00 am-1:31 pm

1 stop7h 31m

$294

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 10/15

2:00 pm-9:34 pm

1 stop7h 34m

Chicago O'Hare Intl

Sun 10/18

6:00 am-1:31 pm

1 stop7h 31m

$301

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 8/15

1:59 pm-9:32 pm

1 stop7h 33m

Chicago O'Hare Intl

Thu 8/20

6:30 am-1:24 pm

1 stop6h 54m

$305

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 10/8

2:00 pm-9:34 pm

1 stop7h 34m

Chicago O'Hare Intl

Sun 10/11

6:00 am-1:31 pm

1 stop7h 31m

$329

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 10/8

2:00 pm-9:34 pm

1 stop7h 34m

Chicago O'Hare Intl

Sun 10/11

6:00 am-1:31 pm

1 stop7h 31m

$339

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 7/18

5:18 pm-12:50 am

1 stop7h 32m

Chicago O'Hare Intl

Tue 7/28

5:00 am-10:12 am

1 stop5h 12m

$350

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 11/16

2:00 pm-11:50 pm

2 stops9h 50m

Chicago O'Hare Intl

Mon 11/23

6:00 am-1:31 pm

1 stop7h 31m

$359

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Fri 7/24

4:58 pm-12:50 am

1 stop7h 52m

Chicago O'Hare Intl

Sat 8/1

5:00 am-10:12 am

1 stop5h 12m

$360

Quickest round-trip

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 11/3

5:10 am-10:07 am

1 stop4h 57m

Chicago O'Hare Intl

Wed 11/4

6:00 am-10:59 am

1 stop4h 59m

$362

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 7/13

4:58 pm-11:39 pm

1 stop6h 41m

Chicago O'Hare Intl

Wed 7/15

5:00 am-10:12 am

1 stop5h 12m

$370

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 October. Flight prices, which tend to average around $130, 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 October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $134.

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 to Illinois flights?

There is only 1 cabin class available to choose from on Harlingen 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 47% 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 57m
Direct flights	None

The fastest flight from Harlingen to Illinois takes 4h 57m

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 June 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 9,796 reviews	Search United Airlines flights
Southwest	PriceFrom $252	Free Cancellation	Rating 7.9 4,240 reviews	Search Southwest flights
American Airlines	PriceFrom $318	Free Cancellation	Rating 7.1 11,640 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.