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Harlingen

$438+ Cheap flights from San Luis Potosí, Mexico (SLP) to Harlingen, TX (HRL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
SLP — HRL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from San Luis Potosí to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from San Luis Potosí (SLP) to Harlingen (HRL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$438
(United Airlines)
From San Luis Potosi to Harlingen Valley Intl
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Find flight deals from San Luis Potosí to Harlingen

Cheapest flights from San Luis Potosí to Harlingen
Explore the most affordable flight options available from San Luis Potosí to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/307:12 amSLP - HRL
1 stop13h 38mUnited Airlines
Wed 8/202:05 pmHRL - SLP
1 stop22h 03mUnited Airlines
Deal found 6/10$438
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 7/255:14 amSLP - HRL
1 stop27h 23mAmerican Airlines
Fri 8/17:59 pmHRL - SLP
1 stop26h 53mAmerican Airlines
Deal found 6/10$483

Cheapflights Fare Finder

Customize your flight search to find flights from San Luis Potosí to Harlingen 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 June 12, 2025.
Use the filters below to find and compare flights from San Luis Potosí to Harlingen that are best for you.

Fly from

San Luis Potosí

Fly to

Harlingen

Route

Depart

Return

Price

San Luis PotosíHarlingen

SLP - HRL

SLPHRL

San Luis Potosi

Wed 7/30

7:12 am-9:50 pm

1 stop13h 38m

Harlingen Valley Intl

Wed 8/20

2:05 pm-11:08 am

1 stop22h 03m

$438

San Luis PotosíHarlingen

SLP - HRL

SLPHRL

San Luis Potosi

Fri 7/25

5:14 am-9:37 am

1 stop27h 23m

Harlingen Valley Intl

Fri 8/1

7:59 pm-9:52 pm

1 stop26h 53m

$483

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from San Luis Potosí to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from San Luis Potosí with our price prediction graph.
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 San Luis Potosí to Harlingen

Rainfall in Harlingen by month

Plan your trip to Harlingen by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Harlingen, Texas ranges from 1.1 - 5.2 inches per month. September is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Harlingen, Texas when rainfall is around 1.1 in.

Temperature in Harlingen by month

Plan your trip to Harlingen by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Harlingen, Texas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 60.8 F).

Reviews of airlines servicing Harlingen

Get insights into the airlines that provide service to Harlingen. 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 Harlingen. Reviews last updated June 12, 2025.
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
8.0
Excellent

FERNANDO,Sep 2024

YYC - IAH

Everything was good, maybe can give better foof flys more than 4 hours

Related info for your journey

Find useful and relevant information for your journey from San Luis Potosí to Harlingen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from San Luis Potosí to Harlingen that include hotel bookings?

    Yes. In addition to deals on San Luis Potosí to Harlingen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Luis Potosí to Harlingen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Luis Potosí to Harlingen.

  • Can I find deals for business class flights from San Luis Potosí to Harlingen?

    Yes. Cheapflights offers flight deals from San Luis Potosí to Harlingen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Luis Potosí to Harlingen, Texas?

    Currently, April is the cheapest month in which you can book a flight from San Luis Potosí to Harlingen, Texas (average of $267). Flying from San Luis Potosí to Harlingen, Texas in June is currently the most expensive (average of $395). 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.

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