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Harlingen

$164+ Cheap flights from San Diego to Harlingen (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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — HRL
May 23 — May 301
Sat 5/23
Sat 5/30
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 April 23, 2026.

This United Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 9/112:01 pm
SAN
-
HRL
1 stop5h 28m
United Airlines
Wed 9/22:00 pm
HRL
-
SAN
1 stop5h 46m
United Airlines
Deal found 4/20$337
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Sat 5/212:10 pm
SAN
-
HRL
1 stop7h 49m
United Airlines
Mon 5/45:18 pm
HRL
-
SAN
1 stop6h 07m
United Airlines
Deal found 4/19$365
This American Airlines deal was found by Cheapflights users on 4/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:15 am
SAN
-
HRL
1 stop6h 02m
American Airlines
Mon 5/42:47 pm
HRL
-
SAN
2 stops9h 08m
American Airlines
Deal found 4/19$370
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 4/229:12 am
SAN
-
HRL
1 stop8h 21m
American Airlines
Fri 4/246:00 am
HRL
-
SAN
1 stop6h 09m
American Airlines
Deal found 4/22$379
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Fri 5/87:40 pm
SAN
-
HRL
2 stops13h 43m
United Airlines
Sun 5/107:00 am
HRL
-
SAN
1 stop6h 03m
United Airlines
Deal found 4/21$384
This United Airlines deal was found by Cheapflights users on 4/22. 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 4/228:45 am
SAN
-
HRL
2 stops8h 55m
United Airlines
Fri 4/2412:05 pm
HRL
-
SAN
2 stops10h 07m
United Airlines
Deal found 4/22$389
This American Airlines deal was found by Cheapflights users on 4/23. 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 5/83:21 pm
SAN
-
HRL
1 stop5h 30m
American Airlines
Sun 5/107:53 pm
HRL
-
SAN
1 stop6h 03m
American Airlines
Deal found 4/23$392

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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(Southwest)

One-way from

$164
(American Airlines)

Popular in

August

Cheapest in

February

Average price

$388
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. 20% potential increase in price ($121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 23, 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

Sat 5/2

12:10 pm-9:59 pm

1 stop7h 49m

Harlingen Valley Intl

Mon 5/4

5:18 pm-9:25 pm

1 stop6h 07m

$365

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Sat 5/2

6:15 am-2:17 pm

1 stop6h 02m

Harlingen Valley Intl

Mon 5/4

2:47 pm-9:55 pm

2 stops9h 08m

$370

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Fri 5/8

7:40 pm-11:23 am

2 stops13h 43m

Harlingen Valley Intl

Sun 5/10

7:00 am-11:03 am

1 stop6h 03m

$384

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Sun 5/3

6:15 am-4:04 pm

1 stop7h 49m

Harlingen Valley Intl

Thu 5/7

7:00 am-2:56 pm

2 stops9h 56m

$412

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Fri 5/8

12:35 pm-11:00 pm

1 stop8h 25m

Harlingen Valley Intl

Sun 5/10

6:00 am-2:25 pm

1 stop10h 25m

$422

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Fri 5/8

9:28 am-7:22 pm

2 stops7h 54m

Harlingen Valley Intl

Sun 5/10

6:00 am-11:57 am

2 stops7h 57m

$478

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Sun 5/3

6:30 am-5:55 pm

2 stops9h 25m

Harlingen Valley Intl

Thu 5/7

6:00 am-11:20 am

2 stops7h 20m

$487
Cheapest one-way

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Mon 5/18

7:20 pm-10:17 am

2 stops12h 57m

$164

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Wed 5/6

6:30 am-7:33 pm

2 stops11h 03m

$181
Quickest one-way

San DiegoHarlingen

SAN - HRL

SANHRL

San Diego

Sun 5/17

6:30 am-1:55 pm

1 stop5h 25m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 April.
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 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Harlingen flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Harlingen 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 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

How much does it cost to fly round-trip from San Diego to Harlingen?

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 April 23, 2026.
Read reviews from past customers who have flown Southwest 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
4,327 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
4,327 reviews
Southwest
8.0
Very good
4,327 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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?

    Departing from San Diego to Harlingen will take you 6h 02m. There are 1255 mi between San Diego and Harlingen. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from San Diego to Harlingen round-trip?

    Our cheapest airline available from San Diego to Harlingen is Southwest. Our recent data shows that you can find tickets from as low as $373 on this airline. Southwest is currently priced 21% below the average price you’ll pay for this route.

  • 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.

See more FAQs

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Top airline flying from San Diego to Harlingen

Discover the top airline 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 April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$373Average$388FlexibilityNo cancel feeOn-time63%

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