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Cheap flights from Illinois to Harlingen from $160

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Harlingen departing on 11/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Illinois to Harlingen

Cheap round-trip flights

Southwest Logo
7:30 am - 1:35 pmORD-HRL
6h 05m1 stop
Southwest Logo
7:25 am - 3:20 pmHRL-ORD
7h 55m1 stop
$217Southwest
Find Deal
Tue, Sep 9 - Tue, Sep 16
Southwest Logo
7:30 am - 1:35 pmORD-HRL
6h 05m1 stop
Southwest Logo
11:15 am - 9:30 pmHRL-ORD
10h 15m2 stops
$222Southwest
Find Deal
Tue, Sep 9 - Tue, Sep 16
Southwest Logo
3:10 pm - 10:05 pmORD-HRL
6h 55m2 stops
Southwest Logo
11:15 am - 9:30 pmHRL-ORD
10h 15m2 stops
$227Southwest
Find Deal
Tue, Sep 9 - Tue, Sep 16
Southwest Logo
4:20 pm - 9:30 pmORD-HRL
5h 10m1 stop
Southwest Logo
6:40 am - 1:05 pmHRL-ORD
6h 25m1 stop
$237Southwest
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
4:50 pm - 9:52 pmORD-HRL
5h 02m1 stop
United Airlines Logo
5:00 am - 10:13 amHRL-ORD
5h 13m1 stop
$262United Airlines
Find Deal
Sat, Aug 30 - Sun, Aug 31
United Airlines Logo
4:50 pm - 9:52 pmORD-HRL
5h 02m1 stop
United Airlines Logo
5:00 am - 11:08 amHRL-ORD
6h 08m1 stop
$305United Airlines
Find Deal
Sat, Aug 30 - Mon, Sep 1
American Airlines Logo
1:21 pm - 6:00 pmORD-HRL
4h 39m1 stop
American Airlines Logo
6:20 pm - 11:22 pmHRL-ORD
5h 02m1 stop
$332American Airlines
Find Deal
Wed, Aug 27 - Sun, Aug 31
Sun Country Air Logo
11:45 am - 10:53 amORD-HRL
23h 08m1 stop
Sun Country Air Logo
11:49 am - 6:50 pmHRL-ORD
7h 01m1 stop
$342Sun Country Air
Find Deal
Wed, Dec 31 - Sun, Jan 4
Sun Country Air Logo
11:45 am - 10:53 amORD-HRL
23h 08m1 stop
Sun Country Air Logo
11:49 am - 6:50 pmHRL-ORD
7h 01m1 stop
$362Sun Country Air
Find Deal
Wed, Dec 31 - Sun, Jan 4
American Airlines Logo
5:15 am - 9:32 amSTL-HRL
4h 17m1 stop
American Airlines Logo
5:30 am - 11:50 amHRL-STL
6h 20m1 stop
$369American Airlines
Find Deal
Thu, Aug 28 - Mon, Sep 1

Southwest flights from Illinois to Harlingen, Texas

Our best Southwest deals on Illinois to Harlingen, Texas flight tickets
Southwest
Sep 9
ORD7:30 amChicago O'Hare Intl
6h 05m
1 stop
HRL1:35 pmHarlingen Valley Intl
Sep 16
HRL7:25 amHarlingen Valley Intl
7h 55m
1 stop
ORD3:20 pmChicago O'Hare Intl
$217
Find similar
Southwest
Sep 9
ORD7:30 amChicago O'Hare Intl
6h 05m
1 stop
HRL1:35 pmHarlingen Valley Intl
Sep 16
HRL11:15 amHarlingen Valley Intl
10h 15m
2 stops
ORD9:30 pmChicago O'Hare Intl
$222
Find similar
Southwest
Sep 9
ORD3:10 pmChicago O'Hare Intl
6h 55m
2 stops
HRL10:05 pmHarlingen Valley Intl
Sep 16
HRL11:15 amHarlingen Valley Intl
10h 15m
2 stops
ORD9:30 pmChicago O'Hare Intl
$227
Find similar

American Airlines flights from Illinois to Harlingen, Texas

Our best American Airlines deals on Illinois to Harlingen, Texas flight tickets
American Airlines
Aug 27
ORD1:21 pmChicago O'Hare Intl
4h 39m
1 stop
HRL6:00 pmHarlingen Valley Intl
Aug 31
HRL6:20 pmHarlingen Valley Intl
5h 02m
1 stop
ORD11:22 pmChicago O'Hare Intl
$332
Find similar
American Airlines
Aug 28
STL5:15 amLambert-St Louis
4h 17m
1 stop
HRL9:32 amHarlingen Valley Intl
Sep 1
HRL5:30 amHarlingen Valley Intl
6h 20m
1 stop
STL11:50 amLambert-St Louis
$369
Find similar
American Airlines
Oct 9
ORD6:18 pmChicago O'Hare Intl
5h 38m
1 stop
HRL11:56 pmHarlingen Valley Intl
Oct 12
HRL6:20 pmHarlingen Valley Intl
5h 33m
1 stop
ORD11:53 pmChicago O'Hare Intl
$393
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Harlingen, Texas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Illinois to Harlingen, Texas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Tue 9/9

7:30 am-1:35 pm

1 stop6h 05m

Harlingen Valley Intl

Tue 9/16

7:25 am-3:20 pm

1 stop7h 55m

$217

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Tue 9/9

7:30 am-1:35 pm

1 stop6h 05m

Harlingen Valley Intl

Tue 9/16

11:15 am-9:30 pm

2 stops10h 15m

$222

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Tue 9/9

3:10 pm-10:05 pm

2 stops6h 55m

Harlingen Valley Intl

Tue 9/16

11:15 am-9:30 pm

2 stops10h 15m

$227

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Fri 9/19

4:20 pm-9:30 pm

1 stop5h 10m

Harlingen Valley Intl

Mon 9/22

6:40 am-1:05 pm

1 stop6h 25m

$237

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sat 8/30

4:50 pm-9:52 pm

1 stop5h 02m

Harlingen Valley Intl

Sun 8/31

5:00 am-10:13 am

1 stop5h 13m

$262

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Sat 8/30

4:50 pm-9:52 pm

1 stop5h 02m

Harlingen Valley Intl

Mon 9/1

5:00 am-11:08 am

1 stop6h 08m

$305

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 8/27

1:21 pm-6:00 pm

1 stop4h 39m

Harlingen Valley Intl

Sun 8/31

6:20 pm-11:22 pm

1 stop5h 02m

$332

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 12/31

11:45 am-10:53 am

1 stop23h 08m

Harlingen Valley Intl

Sun 1/4

11:49 am-6:50 pm

1 stop7h 01m

$342

ChicagoHarlingen

ORD - HRL

ORDHRL

Chicago O'Hare Intl

Wed 12/31

11:45 am-10:53 am

1 stop23h 08m

Harlingen Valley Intl

Sun 1/4

11:49 am-6:50 pm

1 stop7h 01m

$362

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Thu 8/28

5:15 am-9:32 am

1 stop4h 17m

Harlingen Valley Intl

Mon 9/1

5:30 am-11:50 am

1 stop6h 20m

$369

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Harlingen from

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

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

What is the cheapest month to fly to Harlingen, Texas?

The month of April is, on average, the cheapest month to fly to Harlingen, Texas from Illinois, with most prices found around $273. If you are unable to visit Harlingen, Texas during the month of April, then departing from Illinois during the month September is also very affordable. Most momondo users find prices during this month for around $278.

What is the cheapest day to depart on your flight to Harlingen, Texas?

The cheapest day to depart on your flight to Harlingen, Texas is on a Wednesday when prices can be found for as low as $295. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Harlingen, Texas for around $482.

What is the cheapest time of day to depart on your flight to Harlingen, Texas?

Our most recent data shows that the best time of day to fly to Harlingen, Texas is in the evening. Flights from Illinois to Harlingen, Texas during this time can be as low as $347. Flights in the morning are often more expensive with an average ticket price of $433.

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

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

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

There are 1 cabin classes available to choose from on Illinois to Harlingen Valley Intl 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 Illinois to Harlingen, Texas flights?

You could potentially save up to 44% on your flight if you consider stops on a Illinois to Harlingen, Texas flight.

Cheap Illinois to Harlingen, Texas flight deals and tips

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

Best Price Found

$160

Fastest flight time

4h 05m

Direct flights

None

Airports in Harlingen, Texas

1 airport
The best one-way flight to Harlingen, Texas from Illinois in the past 72 hours is $160. The best round-trip flight deal from Illinois to Harlingen, Texas found on momondo in the last 72 hours is $217.
The fastest flight from Illinois to Harlingen, Texas takes 4h 05m
There are no direct flights from Illinois to Harlingen, Texas. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Harlingen Valley Intl Airport and Lambert-St Louis Airport - Harlingen Valley Intl Airport.
There is 1 airport near Harlingen, Texas: Harlingen Valley Intl (HRL)
Search flight deals

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

    Prices for flights from Illinois to Harlingen Valley Intl Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Harlingen Valley Intl Airport.

  • What documentation or ID do you need to fly to Harlingen Valley Intl Airport?

    The travel and health documents required for your trip to Harlingen Valley Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Harlingen Valley Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Illinois to Harlingen, Texas?

Best airlines flying from Illinois to Harlingen, Texas

Compare and see reviews for airlines that fly from Illinois to Harlingen, Texas with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $208Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
United AirlinesPriceFrom $226Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
American AirlinesPriceFrom $267Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Harlingen for you.

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

Yes. momondo enables you to select and highlight flights to Harlingen from Illinois with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Harlingen from Illinois.

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

If you are simply researching potential flights to Harlingen, momondo offers a useful price alert feature which will track prices for flights to Harlingen from Illinois and alert you when they change.

An easier way to manage your Harlingen, Texas trip

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