SAN - HRL

$158 Find Cheap Flights from San Diego to Harlingen

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Harlingen departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Harlingen

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Harlingen, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Harlingen, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$347
United Airlines
Tue 8/18Sat 8/22
SAN - HRL • 1 stop
Cheapest one-way
$158
Overall average: $188
American Airlines
Sat 9/5
SAN - HRL • 1 stop
Top airlines
United Airlines
Cheapest • from $347 (round-trip)
Southwest
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Diego and Harlingen. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Houston (HOU)
Cheapest • Avg $440 (round-trip)
Houston (IAH)
Shortest trip • 5h 46m (one-way)
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 100% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Harlingen!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Diego to Harlingen (SAN-HRL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Harlingen that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to Harlingen

Tue, Aug 18 - Sat, Aug 22
United Airlines Logo
8:00 am - 3:59 pm
SAN
-
HRL
5h 59m
1 stop
United Airlines Logo
5:18 pm - 9:25 pm
HRL
-
SAN
6h 07m
1 stop
$347United Airlines
Mon, Jun 22 - Mon, Jun 29
Southwest Logo
2:45 pm - 11:40 pm
SAN
-
HRL
6h 55m
2 stops
Southwest Logo
6:30 pm - 9:50 pm
HRL
-
SAN
5h 20m
1 stop
$397Southwest
Thu, Jun 11 - Mon, Jun 15
American Airlines Logo
4:33 pm - 12:14 am
SAN
-
HRL
5h 41m
1 stop
American Airlines Logo
8:04 pm - 11:59 pm
HRL
-
SAN
5h 55m
1 stop
$413American Airlines
Mon, Jun 22 - Mon, Jun 29
Southwest Logo
2:45 pm - 11:40 pm
SAN
-
HRL
6h 55m
2 stops
Southwest Logo
5:35 pm - 11:15 pm
HRL
-
SAN
7h 40m
2 stops
$416Southwest
Tue, Aug 18 - Sat, Aug 22
United Airlines Logo
6:20 am - 3:59 pm
SAN
-
HRL
7h 39m
2 stops
United Airlines Logo
5:18 pm - 9:25 pm
HRL
-
SAN
6h 07m
1 stop
$432United Airlines
Tue, Aug 18 - Sat, Aug 22
United Airlines Logo
8:00 am - 3:59 pm
SAN
-
HRL
5h 59m
1 stop
United Airlines Logo
1:59 pm - 10:47 pm
HRL
-
SAN
10h 48m
2 stops
$433United Airlines
Mon, Jun 22 - Mon, Jun 29
Southwest Logo
4:25 pm - 11:40 pm
SAN
-
HRL
5h 15m
1 stop
Southwest Logo
5:35 pm - 9:20 pm
HRL
-
SAN
5h 45m
1 stop
$438Southwest
Thu, Jun 11 - Mon, Jun 15
Southwest Logo
4:25 pm - 11:40 pm
SAN
-
HRL
5h 15m
1 stop
Southwest Logo
1:00 pm - 6:45 pm
HRL
-
SAN
7h 45m
2 stops
$461Southwest
Thu, Jun 11 - Mon, Jun 15
Southwest Logo
8:00 am - 5:00 pm
SAN
-
HRL
7h 00m
2 stops
Southwest Logo
1:00 pm - 6:45 pm
HRL
-
SAN
7h 45m
2 stops
$466Southwest
Tue, Aug 18 - Sat, Aug 22
United Airlines Logo
6:20 am - 3:59 pm
SAN
-
HRL
7h 39m
2 stops
United Airlines Logo
1:59 pm - 10:47 pm
HRL
-
SAN
10h 48m
2 stops
$518United Airlines
Booking Insights

KAYAK's insights & trends for San Diego to Harlingen flights

Get data-powered insights and trends into flights from San Diego to Harlingen to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Diego to Harlingen?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to Harlingen departing in August.

What is the cheapest month to fly from San Diego to Harlingen?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to Harlingen, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Diego to Harlingen is July, where tickets cost $0 (return) on average. On the other hand, the most expensive months are August and October, where the average cost of round-trip tickets is $820 and $538 respectively.

Find deals

Good to know

Low seasonMay
Cheapest flight$158
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from San Diego to Harlingen

When to book flights from San Diego to Harlingen

Are your dates flexible? Find out the best times to travel from San Diego to Harlingen based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Diego to Harlingen

  • What is the cheapest flight from San Diego to Harlingen?

    In the last 3 days, the lowest price for a flight from San Diego to Harlingen was $158 for a one-way ticket and $347 for a round-trip.

  • Do I need a passport to fly between San Diego and Harlingen?

    A passport is not required to fly from San Diego to Harlingen.

  • Which airports will I be using when flying from San Diego to Harlingen?

    When flying out of San Diego you will be using San Diego. You will be landing at Harlingen, also known as Harlingen Valley Intl.

  • Which aircraft models fly most regularly from San Diego to Harlingen?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from San Diego to Harlingen?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Harlingen.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Harlingen?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Harlingen from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Harlingen?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Harlingen with an airline and back to San Diego with another airline. Booking your flights between San Diego and HRL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Harlingen?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Harlingen from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from San Diego to Harlingen

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Harlingen. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Harlingen? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4270 reviews
8.0Comfort
8.1Boarding
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

4.0 OkayAnonymous, May 2026
MSY - HOU
Read more Southwest reviews

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Everything you need to know for your flight from San Diego to Harlingen

Information on your arrival and departure airports

San Diego (SAN)
Harlingen (HRL)