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

Southwest, Sun Country Air, and American 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 October 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.

$149 Cheap Flights from Harlingen to Illinois in 2026/27

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.

2:24 pm - 9:11 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

6h 47m1 stop Dallas/Fort Worth

5:00 am - 10:11 amORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 11m1 stop Dallas/Fort Worth

$345American Airlines

Sat, Dec 5 - Mon, Dec 7

6:41 pm - 11:59 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 18m1 stop Dallas/Fort Worth

3:04 pm - 11:26 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

8h 22m1 stop Dallas/Fort Worth

$345American Airlines

Thu, Dec 3 - Sat, Dec 5

2:00 pm - 9:37 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

7h 37m1 stop Houston George Bush Intcntl

7:00 am - 1:30 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

6h 30m1 stop Houston George Bush Intcntl

$353United Airlines

Mon, Dec 7 - Thu, Dec 17

4:39 pm - 10:56 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

6h 17m1 stop Houston George Bush Intcntl

7:30 am - 3:50 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

8h 20m1 stop Houston George Bush Intcntl

$359United Airlines

Fri, Dec 11 - Sun, Dec 13

2:05 pm - 9:33 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

7h 28m1 stop Houston George Bush Intcntl

7:25 am - 1:30 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

6h 05m1 stop Houston George Bush Intcntl

$359United Airlines

Sun, Jan 24 - Mon, Jan 25

6:41 pm - 11:59 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 18m1 stop Dallas/Fort Worth

6:59 am - 1:54 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

6h 55m1 stop Dallas/Fort Worth

$359American Airlines

Thu, Dec 3 - Sun, Dec 6

2:24 pm - 10:15 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

7h 51m1 stop Dallas/Fort Worth

4:00 pm - 10:54 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

6h 54m1 stop Dallas/Fort Worth

$359American Airlines

Thu, Dec 10 - Sun, Dec 13

8:35 pm - 1:00 amHRL Harlingen Valley Intl-MDW Chicago Midway

4h 25m1 stop Houston Hobby

3:55 pm - 8:45 pmMDW Chicago Midway-HRL Harlingen Valley Intl

4h 50m1 stop Austin Bergstrom

$363Southwest

Wed, Nov 25 - Wed, Dec 2

7:00 am - 3:10 pmHRL Harlingen Valley Intl-MDW Chicago Midway

8h 10m2 stops Houston Hobby Dallas Love Field

3:45 pm - 9:05 pmMDW Chicago Midway-HRL Harlingen Valley Intl

5h 20m1 stop Austin Bergstrom

$364Southwest

Sun, Jan 24 - Mon, Jan 25

8:35 pm - 1:00 amHRL Harlingen Valley Intl-MDW Chicago Midway

4h 25m1 stop Houston Hobby

7:35 am - 3:50 pmMDW Chicago Midway-HRL Harlingen Valley Intl

8h 15m2 stops Lambert-St Louis Houston Hobby

$368Southwest

Wed, Nov 25 - Wed, Dec 2

Cheap last minute flights

Enter your travel dates to find the best prices.

5:05 am - 11:18 amHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

6h 13m1 stop Houston George Bush Intcntl

10:34 am - 4:01 pmORD Chicago O'Hare Intl-HRL Harlingen Valley Intl

5h 27m1 stop Houston George Bush Intcntl

$446United Airlines

Wed, Nov 4 - Fri, Nov 6

4:30 pm - 11:10 pmHRL Harlingen Valley Intl-MDW Chicago Midway

6h 40m1 stop Houston Hobby

5:20 pm - 11:35 pmMDW Chicago Midway-HRL Harlingen Valley Intl

6h 15m1 stop Houston Hobby

$474Southwest

Wed, Nov 4 - Fri, Nov 6

5:05 am - 10:11 amHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

5h 06m1 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

$483United Airlines

Sun, Nov 1 - Sun, Nov 8

7:25 am - 5:05 pmHRL Harlingen Valley Intl-MDW Chicago Midway

9h 40m2 stops Austin Bergstrom Indianapolis

5:20 pm - 11:35 pmMDW Chicago Midway-HRL Harlingen Valley Intl

6h 15m1 stop Houston Hobby

$485Southwest

Wed, Nov 4 - Fri, Nov 6

2:13 pm - 11:57 pmHRL Harlingen Valley Intl-ORD Chicago O'Hare Intl

9h 44m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson

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

7h 03m1 stop Minneapolis St Paul

$488Delta

Sun, Nov 1 - Sun, Nov 8

1:00 pm - 9:00 pmHRL Harlingen Valley Intl-MDW Chicago Midway

8h 00m2 stops Houston Hobby Dallas Love Field

5:20 am - 12:20 pmMDW Chicago Midway-HRL Harlingen Valley Intl

7h 00m1 stop Dallas Love Field

$536Southwest

Sun, Nov 1 - Sun, Nov 8

11:40 am - 9:00 pmHRL Harlingen Valley Intl-MDW Chicago Midway

9h 20m1 stop Dallas Love Field

5:15 am - 11:05 amMDW Chicago Midway-HRL Harlingen Valley Intl

5h 50m1 stop Houston Hobby

$536Southwest

Sun, Nov 1 - Sun, Nov 8

7:25 am - 5:05 pmHRL Harlingen Valley Intl-MDW Chicago Midway

9h 40m2 stops Austin Bergstrom Indianapolis

4:30 pm - 11:35 pmMDW Chicago Midway-HRL Harlingen Valley Intl

7h 05m2 stops Austin Bergstrom Houston Hobby

$540Southwest

Wed, Nov 4 - Fri, Nov 6

5:50 am - 10:20 amHRL Harlingen Valley Intl-MDW Chicago Midway

4h 30m1 stop Houston Hobby

4:30 pm - 9:25 pmMDW Chicago Midway-HRL Harlingen Valley Intl

4h 55m1 stop Austin Bergstrom

$659Southwest

Mon, Nov 2 - Mon, Nov 2

5:50 am - 10:20 amHRL Harlingen Valley Intl-MDW Chicago Midway

4h 30m1 stop Houston Hobby

4:30 pm - 11:30 pmMDW Chicago Midway-HRL Harlingen Valley Intl

7h 00m2 stops Austin Bergstrom Houston Hobby

$664Southwest

Mon, Nov 2 - Mon, Nov 2

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United Airlines flights from Harlingen to Illinois

Our best United Airlines deals on Harlingen to Illinois flight tickets

United Airlines

Dec 7

HRL2:00 pmHarlingen Valley Intl

7h 37m

1 stop

ORD9:37 pmChicago O'Hare Intl

Dec 17

ORD7:00 amChicago O'Hare Intl

6h 30m

1 stop

HRL1:30 pmHarlingen Valley Intl

$353

United Airlines

Nov 14

HRL1:59 pmHarlingen Valley Intl

7h 41m

1 stop

ORD9:40 pmChicago O'Hare Intl

Nov 17

ORD10:34 amChicago O'Hare Intl

5h 27m

1 stop

HRL4:01 pmHarlingen Valley Intl

$365

United Airlines

Mar 4

HRL5:16 pmHarlingen Valley Intl

7h 24m

1 stop

ORD12:40 amChicago O'Hare Intl

Mar 6

ORD5:45 pmChicago O'Hare Intl

5h 19m

1 stop

HRL11:04 pmHarlingen Valley Intl

$381

American Airlines flights from Harlingen to Illinois

Our best American Airlines deals on Harlingen to Illinois flight tickets

American Airlines

Dec 3

HRL6:41 pmHarlingen Valley Intl

5h 18m

1 stop

ORD11:59 pmChicago O'Hare Intl

Dec 5

ORD3:04 pmChicago O'Hare Intl

8h 22m

1 stop

HRL11:26 pmHarlingen Valley Intl

$345

American Airlines

Dec 3

HRL6:41 pmHarlingen Valley Intl

5h 18m

1 stop

ORD11:59 pmChicago O'Hare Intl

Dec 6

ORD6:59 amChicago O'Hare Intl

6h 55m

1 stop

HRL1:54 pmHarlingen Valley Intl

$359

American Airlines

Nov 10

HRL6:41 pmHarlingen Valley Intl

5h 18m

1 stop

ORD11:59 pmChicago O'Hare Intl

Nov 14

ORD6:59 amChicago O'Hare Intl

6h 57m

1 stop

HRL1:56 pmHarlingen Valley Intl

$409

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Sat 12/5

2:24 pm-9:11 pm

1 stop6h 47m

Chicago O'Hare Intl

Mon 12/7

5:00 am-10:11 am

1 stop5h 11m

$345

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Thu 12/3

6:41 pm-11:59 pm

1 stop5h 18m

Chicago O'Hare Intl

Sat 12/5

3:04 pm-11:26 pm

1 stop8h 22m

$345

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Mon 12/7

2:00 pm-9:37 pm

1 stop7h 37m

Chicago O'Hare Intl

Thu 12/17

7:00 am-1:30 pm

1 stop6h 30m

$353

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Fri 12/11

4:39 pm-10:56 pm

1 stop6h 17m

Chicago O'Hare Intl

Sun 12/13

7:30 am-3:50 pm

1 stop8h 20m

$359

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Sun 1/24

2:05 pm-9:33 pm

1 stop7h 28m

Chicago O'Hare Intl

Mon 1/25

7:25 am-1:30 pm

1 stop6h 05m

$359

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Thu 12/3

6:41 pm-11:59 pm

1 stop5h 18m

Chicago O'Hare Intl

Sun 12/6

6:59 am-1:54 pm

1 stop6h 55m

$359

HarlingenChicago

HRL Harlingen Valley Intl - ORD Chicago O'Hare Intl

HRLORD

Harlingen Valley Intl

Thu 12/10

2:24 pm-10:15 pm

1 stop7h 51m

Chicago O'Hare Intl

Sun 12/13

4:00 pm-10:54 pm

1 stop6h 54m

$359

Quickest round-trip

HarlingenChicago

HRL Harlingen Valley Intl - MDW Chicago Midway

HRLMDW

Harlingen Valley Intl

Wed 11/25

8:35 pm-1:00 am

1 stop4h 25m

Chicago Midway

Wed 12/2

3:55 pm-8:45 pm

1 stop4h 50m

$363

HarlingenChicago

HRL Harlingen Valley Intl - MDW Chicago Midway

HRLMDW

Harlingen Valley Intl

Sun 1/24

7:00 am-3:10 pm

2 stops8h 10m

Chicago Midway

Mon 1/25

3:45 pm-9:05 pm

1 stop5h 20m

$364

HarlingenChicago

HRL Harlingen Valley Intl - MDW Chicago Midway

HRLMDW

Harlingen Valley Intl

Wed 11/25

8:35 pm-1:00 am

1 stop4h 25m

Chicago Midway

Wed 12/2

7:35 am-3:50 pm

2 stops8h 15m

$368

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	$149
Fastest flight time	5h 06m
Direct flights	None

The best one-way flight to Illinois from Harlingen in the past 72 hours is $149. The best round-trip flight deal from Harlingen to Illinois found on momondo in the last 72 hours is $345.

The fastest flight from Harlingen to Illinois takes 5h 06m

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 2 as of October 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 7.3 10,451 reviews		Search United Airlines flights
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.0 12,210 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.