$139+ Cheap flights from Harlingen, TX (HRL) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ORD
apr. 21 — apr. 281
Round-trip
1 adult, Economy
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Cheapest flights from Harlingen to IllinoisExplore the most affordable flight options available from Harlingen to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marts 22, 2026.
Explore the most affordable flight options available from Harlingen to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marts 22, 2026.
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 8/225:16 pm
HRL
- ORD
1 stop6h 01m
United Airlines
lør. 8/2910:32 am
ORD
- HRL
1 stop5h 02m
United Airlines
Deal found 3/20![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 4/197:00 am
HRL
- ORD
1 stop6h 15m
Southwest
fre. 4/244:15 pm
ORD
- HRL
2 stops6h 45m
Southwest
Deal found 3/17![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 3/317:00 am
HRL
- ORD
1 stop6h 15m
Southwest
fre. 4/33:50 pm
ORD
- HRL
1 stop6h 20m
Southwest
Deal found 3/17![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 4/256:05 am
HRL
- ORD
2 stops15h 50m
Southwest
ons. 4/293:45 pm
ORD
- HRL
1 stop5h 10m
Southwest
Deal found 3/18![Southwest logo]()
$325
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 4/17:00 am
HRL
- ORD
1 stop6h 15m
Southwest
søn. 4/53:45 pm
ORD
- HRL
1 stop6h 15m
Southwest
Deal found 3/19![Southwest logo]()
$337
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 4/267:00 am
HRL
- ORD
1 stop6h 15m
Southwest
lør. 5/22:05 pm
ORD
- HRL
2 stops7h 30m
Southwest
Deal found 3/18![Southwest logo]()
$338
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 4/17:00 am
HRL
- ORD
1 stop6h 15m
Southwest
man. 4/62:40 pm
ORD
- HRL
2 stops9h 25m
Southwest
Deal found 3/19![Southwest logo]()
$342
This American Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 5/264:57 pm
HRL
- ORD
1 stop7h 45m
American Airlines
lør. 5/306:32 pm
ORD
- HRL
1 stop5h 42m
American Airlines
Deal found 3/21![American Airlines logo]()
$348
Best flights from Harlingen to IllinoisDiscover carefully curated flight deals from Harlingen to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated marts 22, 2026.
Discover carefully curated flight deals from Harlingen to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated marts 22, 2026.
This Southwest deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 4/306:55 am
HRL
- ORD
1 stop6h 20m
Southwest
fre. 5/13:45 pm
ORD
- HRL
1 stop4h 50m
Southwest
Deal found 3/20![Southwest logo]()
$277
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 6/304:57 pm
HRL
- ORD
1 stop7h 45m
American Airlines
tir. 7/711:40 am
ORD
- HRL
1 stop7h 54m
American Airlines
Deal found 3/17![American Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 5/25:18 pm
HRL
- ORD
1 stop5h 56m
United Airlines
tir. 5/512:40 pm
ORD
- HRL
1 stop7h 20m
United Airlines
Deal found 3/18![United Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/207:10 am
HRL
- ORD
1 stop6h 05m
Southwest
søn. 5/242:40 pm
ORD
- HRL
1 stop6h 15m
Southwest
Deal found 3/18![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 4/197:00 am
HRL
- ORD
1 stop6h 15m
Southwest
fre. 4/244:15 pm
ORD
- HRL
2 stops6h 45m
Southwest
Deal found 3/17![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 4/112:40 pm
HRL
- ORD
2 stops9h 15m
Southwest
søn. 4/53:45 pm
ORD
- HRL
1 stop6h 15m
Southwest
Deal found 3/19![Southwest logo]()
$373
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 4/26:50 am
HRL
- ORD
1 stop7h 30m
Southwest
søn. 4/53:45 pm
ORD
- HRL
1 stop6h 15m
Southwest
Deal found 3/21![Southwest logo]()
$378
Last-minute flights from Harlingen to IllinoisDiscover last-minute flight deals from Harlingen to Illinois. Data last updated marts 22, 2026 and is based on user searches.
Discover last-minute flight deals from Harlingen to Illinois. Data last updated marts 22, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 3/317:00 am
HRL
- ORD
1 stop6h 15m
Southwest
fre. 4/33:50 pm
ORD
- HRL
1 stop6h 20m
Southwest
Deal found 3/17![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 4/17:00 am
HRL
- ORD
1 stop6h 15m
Southwest
søn. 4/53:45 pm
ORD
- HRL
1 stop6h 15m
Southwest
Deal found 3/19![Southwest logo]()
$337
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 4/17:00 am
HRL
- ORD
1 stop6h 15m
Southwest
man. 4/62:40 pm
ORD
- HRL
2 stops9h 25m
Southwest
Deal found 3/19![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 4/176:55 am
HRL
- ORD
1 stop6h 20m
Southwest
søn. 4/193:45 pm
ORD
- HRL
1 stop7h 15m
Southwest
Deal found 3/21![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 4/197:00 am
HRL
- ORD
1 stop6h 15m
Southwest
fre. 4/244:15 pm
ORD
- HRL
2 stops6h 45m
Southwest
Deal found 3/17![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 4/256:05 am
HRL
- ORD
2 stops15h 50m
Southwest
ons. 4/293:45 pm
ORD
- HRL
1 stop5h 10m
Southwest
Deal found 3/18![Southwest logo]()
$325
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 4/267:00 am
HRL
- ORD
1 stop6h 15m
Southwest
lør. 5/22:05 pm
ORD
- HRL
2 stops7h 30m
Southwest
Deal found 3/18![Southwest logo]()
$338
One-way flights from Harlingen to IllinoisSearch for one-way flight options from Harlingen to Illinois. Find affordable one-way fares based on user searches. Data last updated marts 22, 2026.
Search for one-way flight options from Harlingen to Illinois. Find affordable one-way fares based on user searches. Data last updated marts 22, 2026.
This American Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 4/212:47 pm
HRL
- ORD
1 stop7h 58m
American Airlines
Deal found 3/20![American Airlines logo]()
$139
This Southwest deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 4/216:20 am
HRL
- ORD
2 stops12h 05m
Southwest
Deal found 3/20![Southwest logo]()
$181
This United Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 4/305:18 pm
HRL
- ORD
1 stop7h 27m
United Airlines
Deal found 3/19![United Airlines logo]()
$184
This United Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 5/145:18 pm
HRL
- ORD
1 stop7h 27m
United Airlines
Deal found 3/21![United Airlines logo]()
$205
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 5/146:00 am
HRL
- ORD
2 stops8h 20m
Southwest
Deal found 3/21![Southwest logo]()
$245
This United Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 5/15:18 pm
HRL
- ORD
1 stop7h 27m
United Airlines
Deal found 3/19![United Airlines logo]()
$275
This United Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 5/212:10 pm
HRL
- ORD
2 stops8h 39m
United Airlines
Deal found 3/19![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 6/237:20 am
HRL
- ORD
2 stops11h 30m
United Airlines
Deal found 3/19![United Airlines logo]()
$1,257
Find flight deals from Harlingen to Illinois
Keep the following information in mind while searching for Harlingen to Illinois flight deals. Data was last updated marts 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $277 (Southwest) |
One-way from | $139 (American Airlines) |
Popular in | January |
Cheapest in | May |
Average price | $453 |
Cheapflights Fare Finder
Customize your flight search to find flights from Harlingen 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, Cheapflights users made 2,558,603 searches. Data last updated marts 22, 2026.
Use the filters below to find and compare flights from Harlingen to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
tor. 4/30
6:55 am-1:15 pm
1 stop6h 20m
Chicago O'Hare Intl
fre. 5/1
3:45 pm-8:35 pm
1 stop4h 50m
$277
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
ons. 5/20
7:10 am-1:15 pm
1 stop6h 05m
Chicago O'Hare Intl
søn. 5/24
2:40 pm-8:55 pm
1 stop6h 15m
$277
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
søn. 4/19
7:00 am-1:15 pm
1 stop6h 15m
Chicago O'Hare Intl
fre. 4/24
4:15 pm-11:00 pm
2 stops6h 45m
$282
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
tir. 6/30
4:57 pm-12:42 am
1 stop7h 45m
Chicago O'Hare Intl
tir. 7/7
11:40 am-7:34 pm
1 stop7h 54m
$348
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
lør. 5/2
5:18 pm-11:14 pm
1 stop5h 56m
Chicago O'Hare Intl
tir. 5/5
12:40 pm-8:00 pm
1 stop7h 20m
$367
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
ons. 4/1
12:40 pm-9:55 pm
2 stops9h 15m
Chicago O'Hare Intl
søn. 4/5
3:45 pm-10:00 pm
1 stop6h 15m
$373
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
tor. 4/2
6:50 am-2:20 pm
1 stop7h 30m
Chicago O'Hare Intl
søn. 4/5
3:45 pm-10:00 pm
1 stop6h 15m
$378
Cheapest one-way
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
tir. 4/21
2:47 pm-10:45 pm
1 stop7h 58m
$139
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
tir. 4/21
6:20 am-6:25 pm
2 stops12h 05m
$181
Quickest one-way
HarlingenChicago
HRL - ORD
HRLORD
Harlingen Valley Intl
tor. 4/30
5:18 pm-12:45 am
1 stop7h 27m
$184
Showing 1-10 of 13 resultsSorted by cheapest first
Best time to book a flight from Harlingen to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Harlingen with our price prediction graph.
HRL-ORD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Harlingen to Illinois
HRL-USIL
HRL-ORD
What is the cheapest month to book a flight from Harlingen, Texas to Illinois?
Currently, December is the cheapest month in which you can book a flight from Harlingen, Texas to Illinois (average of $136). Flying from Harlingen, Texas to Illinois in February is currently the most expensive (average of $538). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated marts 22, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican Airlines from Harlingen to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
8.0
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Overall
8.0
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Overall
8.0
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Overall
8.0
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
Find useful and relevant information for your journey from Harlingen to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Harlingen and Illinois flights
Browse other Harlingen and Illinois flight options. Last updated on marts 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Harlingen to Illinois flights
Consider these flights traveling from Harlingen to Illinois.
Top 3 airlines flying from Harlingen to Illinois
Discover the top 3 airlines that operate flights from Harlingen to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated marts 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$250 | Average$408 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$252 | Average$319 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$259 | Average$435 | FlexibilityNo cancel fee | On-time71% |