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Harlingen

$455+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SLP — HRL
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from San Luis Potosí to Harlingen

Best flights from San Luis Potosí to Harlingen
Discover carefully curated flight deals from San Luis Potosí to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/9. 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.
Tue 4/147:12 amSLP - HRL
1 stop7h 51mUnited Airlines
Sat 4/187:00 amHRL - SLP
1 stop4h 49mUnited Airlines
Deal found 12/9$455

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$455
(United Airlines)
Provider with most accurate pricing for San Luis Potosi-Harlingen Valley Intl flight deals.
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Provider most trusted by Cheapflights users for San Luis Potosi-Harlingen Valley Intl flights.
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From San Luis Potosi to Harlingen Valley Intl
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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 December 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

Tue 4/14

7:12 am-4:03 pm

1 stop7h 51m

Harlingen Valley Intl

Sat 4/18

7:00 am-10:49 am

1 stop4h 49m

$455

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Compare providers for flights from San Luis Potosí to Harlingen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Luis Potosí to Harlingen in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Luis Potosí-Harlingen, Texas flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Luis Potosí-Harlingen, Texas flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Luis Potosí-Harlingen, Texas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Luis Potosí-Harlingen, Texas flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Luis Potosí-Harlingen, Texas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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.

  • How long is the flight from San Luis Potosí to Harlingen, Texas?

    For as low as $455, United Airlines can have you in Harlingen, Texas from San Luis Potosí in 7h 51m. The distance from San Luis Potosí to Harlingen, Texas is about 343 mi.

  • 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.

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