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Cheap flights from Harlingen, Texas to Illinois from $135

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 1/23. 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

Enter your travel dates to find the best prices.
United Airlines Logo
5:20 pm - 12:26 am
HRL
-
ORD
7h 06m1 stop
United Airlines Logo
5:45 am - 11:24 am
ORD
-
HRL
5h 39m1 stop
$269United Airlines
Thu, Feb 12 - Sun, Feb 15
United Airlines Logo
5:25 pm - 12:28 am
HRL
-
ORD
7h 03m1 stop
United Airlines Logo
3:53 pm - 9:59 pm
ORD
-
HRL
6h 06m1 stop
$297United Airlines
Sat, Jan 17 - Tue, Jan 20
American Airlines Logo
6:46 pm - 11:36 pm
HRL
-
ORD
4h 50m1 stop
American Airlines Logo
6:10 am - 2:14 pm
ORD
-
HRL
8h 04m1 stop
$304American Airlines
Mon, Mar 2 - Thu, Mar 5
American Airlines Logo
3:22 pm - 10:09 pm
HRL
-
ORD
6h 47m1 stop
American Airlines Logo
10:19 am - 6:14 pm
ORD
-
HRL
7h 55m1 stop
$309American Airlines
Mon, Jan 12 - Wed, Jan 14
American Airlines Logo
2:43 pm - 10:23 pm
HRL
-
ORD
7h 40m1 stop
American Airlines Logo
3:15 pm - 10:52 pm
ORD
-
HRL
7h 37m1 stop
$313American Airlines
Sat, Feb 14 - Mon, Feb 16
American Airlines Logo
2:43 pm - 10:23 pm
HRL
-
ORD
7h 40m1 stop
American Airlines Logo
3:15 pm - 10:52 pm
ORD
-
HRL
7h 37m1 stop
$339American Airlines
Thu, Feb 12 - Mon, Feb 16
American Airlines Logo
6:02 am - 10:54 am
HRL
-
ORD
4h 52m1 stop
American Airlines Logo
5:37 pm - 11:21 pm
ORD
-
HRL
5h 44m1 stop
$359American Airlines
Sat, Jan 10 - Sat, Jan 10
United Airlines Logo
5:25 pm - 12:28 am
HRL
-
ORD
7h 03m1 stop
United Airlines Logo
9:10 am - 9:59 pm
ORD
-
HRL
12h 49m2 stops
$372United Airlines
Sat, Jan 17 - Tue, Jan 20
United Airlines Logo
5:20 pm - 2:50 pm
HRL
-
ORD
21h 30m2 stops
United Airlines Logo
5:40 am - 11:16 am
ORD
-
HRL
5h 36m1 stop
$458United Airlines
Mon, Mar 2 - Thu, Mar 5
United Airlines Logo
7:00 am - 6:37 pm
HRL
-
ORD
11h 37m2 stops
United Airlines Logo
5:45 am - 11:24 am
ORD
-
HRL
5h 39m1 stop
$469United Airlines
Thu, Feb 12 - Sun, Feb 15

United Airlines flights from Harlingen, Texas to Illinois

Our best United Airlines deals on Harlingen, Texas to Illinois flight tickets
United Airlines
Feb 12
HRL5:20 pmHarlingen Valley Intl
7h 06m
1 stop
ORD12:26 amChicago O'Hare Intl
Feb 15
ORD5:45 amChicago O'Hare Intl
5h 39m
1 stop
HRL11:24 amHarlingen Valley Intl
$269
Find similar
United Airlines
Jan 17
HRL5:25 pmHarlingen Valley Intl
7h 03m
1 stop
ORD12:28 amChicago O'Hare Intl
Jan 20
ORD2:12 pmChicago O'Hare Intl
5h 49m
1 stop
HRL8:01 pmHarlingen Valley Intl
$297
Find similar
United Airlines
Jan 17
HRL5:25 pmHarlingen Valley Intl
7h 03m
1 stop
ORD12:28 amChicago O'Hare Intl
Jan 20
ORD9:10 amChicago O'Hare Intl
12h 49m
2 stops
HRL9:59 pmHarlingen Valley Intl
$372
Find similar

Southwest flights from Harlingen, Texas to Illinois

Our best Southwest deals on Harlingen, Texas to Illinois flight tickets
Southwest
Feb 14
HRL6:15 amHarlingen Valley Intl
15h 35m
2 stops
ORD9:50 pmChicago O'Hare Intl
Feb 16
ORD3:05 pmChicago O'Hare Intl
8h 25m
2 stops
HRL11:30 pmHarlingen Valley Intl
$480
Find similar
Southwest
Jan 5
HRL5:45 amHarlingen Valley Intl
7h 15m
2 stops
ORD1:00 pmChicago O'Hare Intl
Jan 10
ORD6:05 amChicago O'Hare Intl
15h 25m
2 stops
HRL9:30 pmHarlingen Valley Intl
$534
Find similar
Southwest
Dec 30
HRL5:50 amHarlingen Valley Intl
7h 10m
2 stops
ORD1:00 pmChicago O'Hare Intl
Jan 1
ORD2:15 pmChicago O'Hare Intl
7h 40m
2 stops
HRL9:55 pmHarlingen Valley Intl
$539
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 December 28, 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

Thu 2/12

5:20 pm-12:26 am

1 stop7h 06m

Chicago O'Hare Intl

Sun 2/15

5:45 am-11:24 am

1 stop5h 39m

$269

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 1/17

5:25 pm-12:28 am

1 stop7h 03m

Chicago O'Hare Intl

Tue 1/20

3:53 pm-9:59 pm

1 stop6h 06m

$297

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 3/2

6:46 pm-11:36 pm

1 stop4h 50m

Chicago O'Hare Intl

Thu 3/5

6:10 am-2:14 pm

1 stop8h 04m

$304

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 1/12

3:22 pm-10:09 pm

1 stop6h 47m

Chicago O'Hare Intl

Wed 1/14

10:19 am-6:14 pm

1 stop7h 55m

$309

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 2/14

2:43 pm-10:23 pm

1 stop7h 40m

Chicago O'Hare Intl

Mon 2/16

3:15 pm-10:52 pm

1 stop7h 37m

$313

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 2/12

2:43 pm-10:23 pm

1 stop7h 40m

Chicago O'Hare Intl

Mon 2/16

3:15 pm-10:52 pm

1 stop7h 37m

$339

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 1/10

6:02 am-10:54 am

1 stop4h 52m

Chicago O'Hare Intl

Sat 1/10

5:37 pm-11:21 pm

1 stop5h 44m

$359

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Sat 1/17

5:25 pm-12:28 am

1 stop7h 03m

Chicago O'Hare Intl

Tue 1/20

9:10 am-9:59 pm

2 stops12h 49m

$372

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Mon 3/2

5:20 pm-2:50 pm

2 stops21h 30m

Chicago O'Hare Intl

Thu 3/5

5:40 am-11:16 am

1 stop5h 36m

$458

HarlingenChicago

HRL - ORD

HRLORD

Harlingen Valley Intl

Thu 2/12

7:00 am-6:37 pm

2 stops11h 37m

Chicago O'Hare Intl

Sun 2/15

5:45 am-11:24 am

1 stop5h 39m

$469

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 May. Flight prices, which tend to average around $257, 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 $278.

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 is only 1 cabin class 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.

Can stopping save me money on Harlingen, Texas to Illinois flights?

You could potentially save up to 37% on your flight if you consider stops on a Harlingen, Texas to Illinois flight.

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

Fastest flight time

5h 08m

Direct flights

None
The fastest flight from Harlingen, Texas to Illinois takes 5h 08m
There are no direct flights from Harlingen, Texas to Illinois. There are no popular flight routes from Harlingen, Texas to Illinois.
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
11,073 reviews
Search American Airlines flights
SouthwestPriceFrom $252Free CancellationRating
8.0
4,256 reviews
Search Southwest flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
9,113 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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