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Cheap flights from Harlingen, Texas to Illinois from $113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen, Texas to Illinois departing on 12/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Harlingen, Texas to Illinois

Cheap round-trip flights

Southwest Logo
7:25 am - 3:20 pmHRL-ORD
7h 55m1 stop
Southwest Logo
4:20 pm - 9:40 pmORD-HRL
5h 20m1 stop
$171Southwest
Find Deal
Wed, Oct 1 - Tue, Oct 21
American Airlines Logo
6:35 pm - 11:59 pmHRL-ORD
5h 24m1 stop
American Airlines Logo
4:18 pm - 10:57 pmORD-HRL
6h 39m1 stop
$181American Airlines
Find Deal
Wed, Sep 24 - Sat, Sep 27
American Airlines Logo
5:45 am - 11:00 amHRL-ORD
5h 15m1 stop
American Airlines Logo
3:08 pm - 10:57 pmORD-HRL
7h 49m1 stop
$196American Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 16
American Airlines Logo
6:19 pm - 11:52 pmHRL-ORD
5h 33m1 stop
American Airlines Logo
8:25 am - 2:19 pmORD-HRL
5h 54m1 stop
$214American Airlines
Find Deal
Thu, Sep 25 - Sat, Sep 27
Southwest Logo
11:15 am - 9:30 pmHRL-ORD
10h 15m2 stops
Southwest Logo
1:30 pm - 10:35 pmORD-HRL
9h 05m2 stops
$231Southwest
Find Deal
Wed, Oct 1 - Tue, Oct 21
American Airlines Logo
2:51 pm - 9:45 pmHRL-ORD
6h 54m1 stop
American Airlines Logo
4:18 pm - 10:57 pmORD-HRL
6h 39m1 stop
$237American Airlines
Find Deal
Wed, Sep 24 - Sat, Sep 27
American Airlines Logo
5:45 am - 12:35 pmHRL-ORD
6h 50m1 stop
American Airlines Logo
3:08 pm - 10:57 pmORD-HRL
7h 49m1 stop
$251American Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 16
United Airlines Logo
5:17 pm - 12:14 amHRL-ORD
6h 57m1 stop
United Airlines Logo
4:50 pm - 11:18 pmORD-HRL
6h 28m1 stop
$338United Airlines
Find Deal
Mon, Oct 13 - Fri, Oct 17
Sun Country Air Logo
5:00 pm - 7:08 pmHRL-ORD
26h 08m1 stop
Sun Country Air Logo
7:50 pm - 10:47 amORD-HRL
14h 57m1 stop
$342Sun Country Air
Find Deal
Wed, Dec 17 - Sun, Dec 21
United Airlines Logo
5:00 am - 10:13 amHRL-ORD
5h 13m1 stop
United Airlines Logo
7:15 am - 9:52 pmORD-HRL
14h 37m2 stops
$356United Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 16

Southwest flights from Harlingen, Texas to Illinois

Our best Southwest deals on Harlingen, Texas to Illinois flight tickets
Southwest
Oct 1
HRL7:25 amHarlingen Valley Intl
7h 55m
1 stop
ORD3:20 pmChicago O'Hare Intl
Oct 21
ORD4:20 pmChicago O'Hare Intl
5h 20m
1 stop
HRL9:40 pmHarlingen Valley Intl
$171
Find similar
Southwest
Oct 1
HRL11:15 amHarlingen Valley Intl
10h 15m
2 stops
ORD9:30 pmChicago O'Hare Intl
Oct 21
ORD1:30 pmChicago O'Hare Intl
9h 05m
2 stops
HRL10:35 pmHarlingen Valley Intl
$231
Find similar
Southwest
Aug 29
HRL6:40 amHarlingen Valley Intl
6h 25m
1 stop
ORD1:05 pmChicago O'Hare Intl
Aug 31
ORD1:50 pmChicago O'Hare Intl
8h 05m
1 stop
HRL9:55 pmHarlingen Valley Intl
$269
Find similar

American Airlines flights from Harlingen, Texas to Illinois

Our best American Airlines deals on Harlingen, Texas to Illinois flight tickets
American Airlines
Sep 24
HRL6:35 pmHarlingen Valley Intl
5h 24m
1 stop
ORD11:59 pmChicago O'Hare Intl
Sep 27
ORD4:18 pmChicago O'Hare Intl
6h 39m
1 stop
HRL10:57 pmHarlingen Valley Intl
$181
Find similar
American Airlines
Sep 9
HRL5:45 amHarlingen Valley Intl
5h 15m
1 stop
ORD11:00 amChicago O'Hare Intl
Sep 16
ORD3:08 pmChicago O'Hare Intl
7h 49m
1 stop
HRL10:57 pmHarlingen Valley Intl
$196
Find similar
American Airlines
Sep 25
HRL6:19 pmHarlingen Valley Intl
5h 33m
1 stop
ORD11:52 pmChicago O'Hare Intl
Sep 27
ORD8:25 amChicago O'Hare Intl
5h 54m
1 stop
HRL2:19 pmHarlingen Valley Intl
$214
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen, Texas to Illinois 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 5, 2025.
Use the filters below to find and compare flights from Harlingen, Texas to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 10/1

7:25 am-3:20 pm

1 stop7h 55m

Chicago O'Hare Intl

Tue 10/21

4:20 pm-9:40 pm

1 stop5h 20m

$171

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 9/24

6:35 pm-11:59 pm

1 stop5h 24m

Chicago O'Hare Intl

Sat 9/27

4:18 pm-10:57 pm

1 stop6h 39m

$181

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 9/9

5:45 am-11:00 am

1 stop5h 15m

Chicago O'Hare Intl

Tue 9/16

3:08 pm-10:57 pm

1 stop7h 49m

$196

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 9/25

6:19 pm-11:52 pm

1 stop5h 33m

Chicago O'Hare Intl

Sat 9/27

8:25 am-2:19 pm

1 stop5h 54m

$214

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 10/1

11:15 am-9:30 pm

2 stops10h 15m

Chicago O'Hare Intl

Tue 10/21

1:30 pm-10:35 pm

2 stops9h 05m

$231

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 9/24

2:51 pm-9:45 pm

1 stop6h 54m

Chicago O'Hare Intl

Sat 9/27

4:18 pm-10:57 pm

1 stop6h 39m

$237

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 9/9

5:45 am-12:35 pm

1 stop6h 50m

Chicago O'Hare Intl

Tue 9/16

3:08 pm-10:57 pm

1 stop7h 49m

$251

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 10/13

5:17 pm-12:14 am

1 stop6h 57m

Chicago O'Hare Intl

Fri 10/17

4:50 pm-11:18 pm

1 stop6h 28m

$338

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Wed 12/17

5:00 pm-7:08 pm

1 stop26h 08m

Chicago O'Hare Intl

Sun 12/21

7:50 pm-10:47 am

1 stop14h 57m

$342

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Tue 9/9

5:00 am-10:13 am

1 stop5h 13m

Chicago O'Hare Intl

Tue 9/16

7:15 am-9:52 pm

2 stops14h 37m

$356

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Harlingen, Texas 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

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Harlingen, Texas is in September. Flight prices, which tend to average around $256, 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 September, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $257.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Harlingen, Texas to Illinois is on a Wednesday when prices can be found for as low as $263. Flights from Harlingen, Texas to Illinois on a Saturday will generally be more expensive and average around $676. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Harlingen, Texas to Illinois during this time can be as low as $351. Flights at noon are often more expensive with an average ticket price of $676.

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 are 1 cabin classes 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.

Cheap Harlingen, Texas to Illinois flight deals and tips

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

Best Price Found

$113

Fastest flight time

5h 10m

Direct flights

None

Airports in Illinois

1 airport
The best one-way flight to Illinois from Harlingen, Texas in the past 72 hours is $113. The best round-trip flight deal from Harlingen, Texas to Illinois found on momondo in the last 72 hours is $171.
The fastest flight from Harlingen, Texas to Illinois takes 5h 10m
There are no direct flights from Harlingen, Texas to Illinois. Popular non-direct route for this connection is Harlingen Valley Intl Airport - Chicago O'Hare Intl Airport.
There is 1 airport near Illinois: Chicago O'Hare Intl (ORD)
Search flight deals

  • 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?

  • 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, Texas to Illinois

Compare and see reviews for airlines that fly from Harlingen, Texas to Illinois with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $217Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $263Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $288Free CancellationRating
7.4
8,916 reviews
Search United 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.

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