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Harlingen

$218+ Cheap flights from San Diego to Harlingen, TX (SAN - HRL)

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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — HRL
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Cheap flight deals from San Diego to Harlingen

Cheapest flights from San Diego to Harlingen
Explore the most affordable flight options available from San Diego to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

This United Airlines deal was found by Cheapflights users on 3/8. 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 4/146:15 am
SAN
-
HRL
1 stop7h 49m
United Airlines
Wed 4/155:18 pm
HRL
-
SAN
1 stop6h 08m
United Airlines
Deal found 3/8$317
This United Airlines deal was found by Cheapflights users on 3/11. 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 3/171:53 pm
SAN
-
HRL
1 stop6h 03m
United Airlines
Fri 3/205:25 pm
HRL
-
SAN
1 stop6h 35m
United Airlines
Deal found 3/11$453
This Southwest deal was found by Cheapflights users on 3/7. 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.
Thu 3/262:35 pm
SAN
-
HRL
1 stop7h 30m
Southwest
Mon 3/306:50 am
HRL
-
SAN
1 stop7h 15m
Southwest
Deal found 3/7$479
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Sun 3/151:53 pm
SAN
-
HRL
1 stop6h 03m
United Airlines
Tue 3/1712:10 pm
HRL
-
SAN
1 stop8h 23m
United Airlines
Deal found 3/11$483

Find flight deals from San Diego to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(United Airlines)

One-way from

$218
(United Airlines)

Popular in

August

Cheapest in

March

Average price

$325
Provider with most accurate pricing for San Diego-Harlingen Valley Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Harlingen Valley Intl flights.
Search Deals
From San Diego to Harlingen Valley Intl
Search Deals
One-way flight from San Diego to Harlingen Valley Intl
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($136 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego 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 March 12, 2026.
Use the filters below to find and compare flights from San Diego to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Tue 4/14

12:10 pm-7:40 pm

1 stop5h 30m

Harlingen Valley Intl

Wed 4/15

5:18 pm-9:26 pm

1 stop6h 08m

$317

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Thu 3/26

2:35 pm-12:05 am

1 stop7h 30m

Harlingen Valley Intl

Mon 3/30

6:00 am-11:55 am

2 stops7h 55m

$484
Cheapest one-way
Quickest one-way

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Thu 3/26

2:35 pm-12:05 am

1 stop7h 30m

$240

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Fri 4/3

7:10 am-5:50 pm

2 stops8h 40m

$245

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Fri 4/3

8:37 pm-9:59 pm

3 stops23h 22m

$297

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Sat 4/4

9:00 am-7:36 pm

1 stop8h 36m

$328

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Sun 4/5

8:37 pm-4:04 pm

3 stops17h 27m

$419

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Sat 4/4

2:51 pm-11:18 am

3 stops42h 27m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Sorted by cheapest first

Compare providers for flights from San Diego 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 Diego to Harlingen in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 Diego-Harlingen, Texas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Harlingen, Texas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Harlingen, Texas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Harlingen, Texas flights, Cheapflights users trust FlightHub the most. FlightHub 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 Diego-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 Diego to Harlingen

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

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

Currently, July is the cheapest month in which you can book a flight from San Diego to Harlingen, Texas (average of $142). Flying from San Diego to Harlingen, Texas in June is currently the most expensive (average of $273). 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 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 March 12, 2026.
Read reviews from past customers who have flown Southwest and American Airlines from San Diego to Harlingen. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,319 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

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
4,319 reviews
Southwest
8.0
Very good
4,319 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

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
American Airlines
7.1
Good
11,432 reviews
Southwest
8.0
Very good
4,319 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

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 San Diego 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 Diego to Harlingen, Texas?

    Airlines like United Airlines fly from San Diego to Harlingen, Texas in about 5h 30m. The time it takes to get you to your destination can typically vary by up to . The distance between San Diego and Harlingen, Texas is about 1255 mi.

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

    According to our current data, Southwest ($240), and American Airlines ($262) offers the cheapest pricing from San Diego to Harlingen, Texas. These flights start at 47% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from San Diego to Harlingen, Texas (average of $142). Flying from San Diego to Harlingen, Texas in June is currently the most expensive (average of $273). 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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Top 2 airlines flying from San Diego to Harlingen

Discover the top 2 airlines that operate flights from San Diego to Harlingen. 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 March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$240Average$388FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$262Average$355FlexibilityNo cancel feeOn-time71%

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