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

Sun Country Air, Delta, and United Airlines 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 2 as of September 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.

$153 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

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:42 pm - 11:59 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 17m1 stop Dallas/Fort Worth

5:00 am - 10:08 amORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 08m1 stop Dallas/Fort Worth

$311American Airlines

Sat, Oct 17 - Wed, Oct 21

6:42 pm - 11:59 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 17m1 stop Dallas/Fort Worth

5:00 am - 10:08 amORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 08m1 stop Dallas/Fort Worth

$325American Airlines

Sat, Oct 10 - Sat, Oct 17

10:40 am - 4:16 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 36m1 stop Dallas/Fort Worth

3:00 pm - 11:31 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

8h 31m1 stop Dallas/Fort Worth

$325American Airlines

Fri, Oct 30 - Tue, Nov 3

6:42 pm - 11:59 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 17m1 stop Dallas/Fort Worth

5:00 am - 10:08 amORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 08m1 stop Dallas/Fort Worth

$325American Airlines

Fri, Oct 16 - Wed, Oct 21

2:13 pm - 7:38 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 25m1 stop Minneapolis St Paul

6:20 am - 1:23 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

7h 03m1 stop Minneapolis St Paul

$354Delta

Fri, Oct 16 - Mon, Oct 19

12:34 pm - 6:45 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

6h 11m1 stop Minneapolis St Paul

11:53 am - 10:49 amORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

22h 56m1 stop Minneapolis St Paul

$365Sun Country Air

Fri, Dec 25 - Thu, Dec 31

11:46 am - 10:23 amHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

22h 37m1 stop Minneapolis St Paul

11:53 am - 10:49 amORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

22h 56m1 stop Minneapolis St Paul

$365Sun Country Air

Thu, Dec 24 - Thu, Dec 31

5:05 am - 11:16 amHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

6h 11m1 stop Houston George Bush Intcntl

5:30 am - 10:50 amORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 20m1 stop Houston George Bush Intcntl

$370United Airlines

Wed, Oct 21 - Sun, Oct 25

5:05 am - 10:16 amHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 11m1 stop Houston George Bush Intcntl

8:45 am - 3:59 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

7h 14m1 stop Houston George Bush Intcntl

$389United Airlines

Thu, Sep 24 - Sat, Sep 26

5:18 pm - 11:26 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

6h 08m1 stop Houston George Bush Intcntl

4:11 pm - 9:52 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 41m1 stop Houston George Bush Intcntl

$394United Airlines

Fri, Oct 2 - Mon, Oct 5

Cheap last minute flights

Enter your travel dates to find the best prices.

5:28 pm - 12:14 amHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

6h 46m1 stop Dallas/Fort Worth

5:00 am - 9:58 amORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

4h 58m1 stop Dallas/Fort Worth

$426American Airlines

Wed, Sep 16 - Fri, Sep 18

1:59 pm - 8:05 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

6h 06m1 stop Houston George Bush Intcntl

4:11 pm - 9:52 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 41m1 stop Houston George Bush Intcntl

$426United Airlines

Sat, Sep 19 - Mon, Sep 21

5:05 am - 10:15 amHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 10m1 stop Houston George Bush Intcntl

6:30 am - 1:24 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

6h 54m1 stop Houston George Bush Intcntl

$463United Airlines

Fri, Sep 18 - Sun, Sep 20

5:05 am - 10:15 amHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 10m1 stop Houston George Bush Intcntl

1:30 pm - 9:52 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

8h 22m2 stops San Antonio Houston George Bush Intcntl

$729United Airlines

Wed, Sep 16 - Fri, Sep 18

5:05 am - 4:59 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

11h 54m2 stops Houston George Bush Intcntl Austin Bergstrom

4:11 pm - 9:52 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 41m1 stop Houston George Bush Intcntl

$737United Airlines

Sat, Sep 19 - Mon, Sep 21

5:05 am - 4:59 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

11h 54m2 stops Houston George Bush Intcntl Austin Bergstrom

6:30 am - 1:24 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

6h 54m1 stop Houston George Bush Intcntl

$799United Airlines

Fri, Sep 18 - Sun, Sep 20

10:45 am - 6:34 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

7h 49m2 stops Dallas/Fort Worth Austin Bergstrom

3:20 pm - 10:48 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

7h 28m2 stops Manhattan Dallas/Fort Worth

$1,079American Airlines

Sat, Sep 19 - Mon, Sep 21

10:45 am - 6:34 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

7h 49m2 stops Dallas/Fort Worth Austin Bergstrom

11:54 am - 7:25 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

7h 31m2 stops Oklahoma City Will Rogers World Dallas/Fort Worth

$1,133American Airlines

Fri, Sep 18 - Sun, Sep 20

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Sun Country Air flights from Harlingen to Illinois

Our best Sun Country Air deals on Harlingen to Illinois flight tickets

Sun Country Air

Dec 24

HRL11:46 amHarlingen Valley Intl

22h 37m

1 stop

ORD10:23 amChicago O'Hare Intl

Dec 31

ORD11:53 amChicago O'Hare Intl

22h 56m

1 stop

HRL10:49 amHarlingen Valley Intl

$365

Sun Country Air

Dec 24

HRL11:46 amHarlingen Valley Intl

22h 37m

1 stop

ORD10:23 amChicago O'Hare Intl

Dec 30

ORD11:40 amChicago O'Hare Intl

23h 09m

1 stop

HRL10:49 amHarlingen Valley Intl

$375

Sun Country Air

Dec 20

HRL11:34 amHarlingen Valley Intl

7h 16m

1 stop

ORD6:50 pmChicago O'Hare Intl

Dec 31

ORD11:53 amChicago O'Hare Intl

22h 56m

1 stop

HRL10:49 amHarlingen Valley Intl

$405

United Airlines flights from Harlingen to Illinois

Our best United Airlines deals on Harlingen to Illinois flight tickets

United Airlines

Oct 21

HRL5:05 amHarlingen Valley Intl

6h 11m

1 stop

ORD11:16 amChicago O'Hare Intl

Oct 25

ORD5:30 amChicago O'Hare Intl

5h 20m

1 stop

HRL10:50 amHarlingen Valley Intl

$370

United Airlines

Sep 24

HRL5:05 amHarlingen Valley Intl

5h 11m

1 stop

ORD10:16 amChicago O'Hare Intl

Sep 26

ORD8:45 amChicago O'Hare Intl

7h 14m

1 stop

HRL3:59 pmHarlingen Valley Intl

$389

United Airlines

Oct 2

HRL5:18 pmHarlingen Valley Intl

6h 08m

1 stop

ORD11:26 pmChicago O'Hare Intl

Oct 5

ORD4:11 pmChicago O'Hare Intl

5h 41m

1 stop

HRL9:52 pmHarlingen Valley Intl

$394

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Sat 10/17

6:42 pm-11:59 pm

1 stop5h 17m

Chicago O'Hare Intl

Wed 10/21

5:00 am-10:08 am

1 stop5h 08m

$311

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Sat 10/10

6:42 pm-11:59 pm

1 stop5h 17m

Chicago O'Hare Intl

Sat 10/17

5:00 am-10:08 am

1 stop5h 08m

$325

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Fri 10/30

10:40 am-4:16 pm

1 stop5h 36m

Chicago O'Hare Intl

Tue 11/3

3:00 pm-11:31 pm

1 stop8h 31m

$325

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Fri 10/16

6:42 pm-11:59 pm

1 stop5h 17m

Chicago O'Hare Intl

Wed 10/21

5:00 am-10:08 am

1 stop5h 08m

$325

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Fri 10/16

2:13 pm-7:38 pm

1 stop5h 25m

Chicago O'Hare Intl

Mon 10/19

6:20 am-1:23 pm

1 stop7h 03m

$354

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Fri 12/25

12:34 pm-6:45 pm

1 stop6h 11m

Chicago O'Hare Intl

Thu 12/31

11:53 am-10:49 am

1 stop22h 56m

$365

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Thu 12/24

11:46 am-10:23 am

1 stop22h 37m

Chicago O'Hare Intl

Thu 12/31

11:53 am-10:49 am

1 stop22h 56m

$365

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Wed 10/21

5:05 am-11:16 am

1 stop6h 11m

Chicago O'Hare Intl

Sun 10/25

5:30 am-10:50 am

1 stop5h 20m

$370

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Thu 9/24

5:05 am-10:16 am

1 stop5h 11m

Chicago O'Hare Intl

Sat 9/26

8:45 am-3:59 pm

1 stop7h 14m

$389

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Fri 10/2

5:18 pm-11:26 pm

1 stop6h 08m

Chicago O'Hare Intl

Mon 10/5

4:11 pm-9:52 pm

1 stop5h 41m

$394

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 May. Flight prices, which tend to average around $298, 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 May, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $348.

Can stopping save me money on Harlingen to Illinois flights?

You could potentially save up to 28% 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

Best Price Found	$153
Fastest flight time	5h 11m
Direct flights	Sun
Airports in Illinois	98 airports

The best one-way flight to Illinois from Harlingen in the past 72 hours is $153. The best round-trip flight deal from Harlingen to Illinois found on momondo in the last 72 hours is $311.

The fastest flight from Harlingen to Illinois takes 5h 11m

Direct flights go from Harlingen to Illinois on Sunday. There are no airlines offering direct flights.

There are 98 airports in Illinois. From Harlingen there are direct flights to Chicago O'Hare Intl (ORD).

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 2 as of September 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 10,213 reviews		Search United Airlines flights
American Airlines	PriceFrom $290	Free Cancellation	Rating 7.1 12,053 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.