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$137+ Cheap flights from Harlingen, TX to San Diego (HRL - SAN)

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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — SAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Harlingen to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to San Diego (SAN). 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

$287
(United Airlines)

One-way from

$137
(Southwest)

Popular in

February

Cheapest in

September

Average price

$342
From Harlingen Valley Intl to San Diego
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One-way flight from Harlingen Valley Intl to San Diego
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Highest demand for flights based on searches. 6% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Harlingen to San Diego

Cheapest flights from Harlingen to San Diego
Explore the most affordable flight options available from Harlingen to San Diego. 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.
Tue 7/151:59 pmHRL - SAN
1 stop6h 12mUnited Airlines
Thu 7/1710:54 amSAN - HRL
2 stops8h 56mUnited Airlines
Deal found 6/10$287
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.
Tue 7/157:59 pmHRL - SAN
1 stop6h 10mAmerican Airlines
Thu 7/173:22 pmSAN - HRL
1 stop6h 44mAmerican Airlines
Deal found 6/10$292
This Southwest deal was found by Cheapflights users on 6/12. 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.
Sat 6/215:45 pmHRL - SAN
1 stop7h 35mSouthwest
Tue 6/247:45 amSAN - HRL
2 stops7h 45mSouthwest
Deal found 6/12$417

Cheapflights Fare Finder

Customize your flight search to find flights from Harlingen to San Diego 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 Harlingen to San Diego that are best for you.

Fly from

Harlingen

Fly to

San Diego

Route

Depart

Return

Price

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Tue 7/15

1:59 pm-6:11 pm

1 stop6h 12m

San Diego

Thu 7/17

10:54 am-9:50 pm

2 stops8h 56m

$287

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Tue 7/15

7:59 pm-12:09 am

1 stop6h 10m

San Diego

Thu 7/17

3:22 pm-12:06 am

1 stop6h 44m

$292

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Thu 10/9

6:00 am-12:20 pm

2 stops8h 20m

San Diego

Sun 10/12

1:40 pm-11:45 pm

2 stops8h 05m

$449

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Fri 6/27

5:30 pm-9:50 pm

1 stop6h 20m

$137

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Wed 6/25

7:59 pm-11:56 pm

1 stop5h 57m

$170

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Sat 6/28

1:59 pm-12:15 am

2 stops12h 16m

$215

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Harlingen to San Diego

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

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

Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to San Diego (average of $286). Flying from Harlingen, Texas to San Diego in March is currently the most expensive (average of $366). 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.

What is the cheapest time of day to fly from HRL to SAN?

Find hourly flight availability from Harlingen to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

It’s typically best to fly out from Harlingen, Texas to San Diego at noon. Doing so could potentially save you 3% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in San Diego by month

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

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

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

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 Diego. Reviews last updated June 12, 2025.
See what other customers who have flown with Southwest, United Airlines and American Airlines from Harlingen to San Diego have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Overall

8.0

Food

7.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

Find useful and relevant information for your journey from Harlingen to San Diego. 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 Diego round-trip?

    Cheapflights users have booked flights from Harlingen, Texas to San Diego round-trip from $287. Other airlines that can offer you cheap pricing are American Airlines, from $292, and Southwest, from $417. You may be able to fly from Harlingen, Texas to San Diego for 21% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Harlingen, Texas to San Diego one-way?

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $137. American Airlines flights start at $170 while deals on United Airlines start at $215 one-way.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to San Diego (average of $286). Flying from Harlingen, Texas to San Diego in March is currently the most expensive (average of $366). 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 Harlingen?

Book flights to Harlingen if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado

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Top 3 airlines flying from Harlingen to San Diego

Discover the top 3 airlines that operate flights from Harlingen to San Diego. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$164Average$298FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$179Average$383FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$273Average$378FlexibilityNo cancel feeOn-time71%

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