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Cheap flights from Harlingen, TX to San Antonio (HRL - SAT)

HRL — SAT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Best time to book a flight from Harlingen to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Harlingen 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 Harlingen to San Antonio

What is the cheapest month to book a flight from Harlingen, Texas to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to San Antonio (average of $295). Flying from Harlingen, Texas to San Antonio in March is currently the most expensive (average of $376). 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 San Antonio

Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated September 15, 2025.
Read through reviews of airlines operating flights from Harlingen to San Antonio, such as Southwest and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • What are the cheapest airlines flying from Harlingen, Texas to San Antonio round-trip?

    Southwest, at $208, was found to be the cheapest airline from Harlingen, Texas to San Antonio. An alternate airline flying to your destination would be United Airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Harlingen to San Antonio 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 Harlingen, Texas to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to San Antonio (average of $295). Flying from Harlingen, Texas to San Antonio in March is currently the most expensive (average of $376). 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.

See more FAQs

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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Top 2 airlines flying from Harlingen to San Antonio

Discover the top 2 airlines that operate flights from Harlingen to San Antonio. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$208Average$253FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$208Average$308FlexibilityNo cancel feeOn-time69%

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