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Cheap flights from Harlingen, Texas to San Diego from $119

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen, Texas to San Diego departing on 4/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Harlingen, Texas to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:55 pm - 9:40 pm
HRL
-
SAN
5h 45m
1 stop
Southwest Logo
1:00 pm - 10:00 pm
SAN
-
HRL
7h 00m
1 stop
$237Southwest
Wed, Apr 29 - Tue, May 5
Southwest Logo
5:55 pm - 9:40 pm
HRL
-
SAN
5h 45m
1 stop
Southwest Logo
12:30 pm - 10:00 pm
SAN
-
HRL
7h 30m
2 stops
$242Southwest
Wed, Apr 29 - Tue, May 5
United Airlines Logo
12:05 pm - 8:12 pm
HRL
-
SAN
10h 07m
2 stops
United Airlines Logo
6:20 am - 4:04 pm
SAN
-
HRL
7h 44m
2 stops
$288United Airlines
Wed, Apr 29 - Tue, May 5
Southwest Logo
6:00 pm - 10:15 pm
HRL
-
SAN
6h 15m
1 stop
Southwest Logo
12:35 pm - 11:00 pm
SAN
-
HRL
8h 25m
1 stop
$295Southwest
Mon, Apr 20 - Mon, Apr 27
United Airlines Logo
12:10 pm - 5:53 pm
HRL
-
SAN
7h 43m
1 stop
United Airlines Logo
6:15 am - 4:04 pm
SAN
-
HRL
7h 49m
1 stop
$296United Airlines
Fri, May 8 - Wed, May 13
Southwest Logo
6:00 pm - 11:05 pm
HRL
-
SAN
7h 05m
2 stops
Southwest Logo
12:35 pm - 11:00 pm
SAN
-
HRL
8h 25m
1 stop
$301Southwest
Mon, Apr 20 - Mon, Apr 27
Southwest Logo
6:00 pm - 11:05 pm
HRL
-
SAN
7h 05m
2 stops
Southwest Logo
12:30 pm - 10:00 pm
SAN
-
HRL
7h 30m
2 stops
$327Southwest
Fri, May 8 - Wed, May 13
Southwest Logo
6:00 pm - 11:05 pm
HRL
-
SAN
7h 05m
2 stops
Southwest Logo
6:55 am - 5:25 pm
SAN
-
HRL
8h 30m
2 stops
$335Southwest
Mon, Apr 20 - Mon, Apr 27
United Airlines Logo
5:18 pm - 9:26 pm
HRL
-
SAN
6h 08m
1 stop
United Airlines Logo
11:01 am - 9:59 pm
SAN
-
HRL
8h 58m
2 stops
$336United Airlines
Tue, Apr 14 - Wed, Apr 15
United Airlines Logo
9:20 am - 9:30 pm
HRL
-
SAN
14h 10m
2 stops
United Airlines Logo
8:45 am - 9:59 pm
SAN
-
HRL
11h 14m
2 stops
$341United Airlines
Tue, Apr 14 - Wed, Apr 15

Southwest flights from Harlingen, Texas to San Diego

Our best Southwest deals on Harlingen, Texas to San Diego flight tickets
Southwest
Apr 29
HRL5:55 pmHarlingen Valley Intl
5h 45m
1 stop
SAN9:40 pmSan Diego
May 5
SAN1:00 pmSan Diego
7h 00m
1 stop
HRL10:00 pmHarlingen Valley Intl
$237
Southwest
Apr 29
HRL5:55 pmHarlingen Valley Intl
5h 45m
1 stop
SAN9:40 pmSan Diego
May 5
SAN12:30 pmSan Diego
7h 30m
2 stops
HRL10:00 pmHarlingen Valley Intl
$242
Southwest
Apr 20
HRL6:00 pmHarlingen Valley Intl
6h 15m
1 stop
SAN10:15 pmSan Diego
Apr 27
SAN12:35 pmSan Diego
8h 25m
1 stop
HRL11:00 pmHarlingen Valley Intl
$295

United Airlines flights from Harlingen, Texas to San Diego

Our best United Airlines deals on Harlingen, Texas to San Diego flight tickets
United Airlines
Apr 29
HRL12:05 pmHarlingen Valley Intl
10h 07m
2 stops
SAN8:12 pmSan Diego
May 5
SAN6:20 amSan Diego
7h 44m
2 stops
HRL4:04 pmHarlingen Valley Intl
$288
United Airlines
May 8
HRL12:10 pmHarlingen Valley Intl
7h 43m
1 stop
SAN5:53 pmSan Diego
May 13
SAN6:15 amSan Diego
7h 49m
1 stop
HRL4:04 pmHarlingen Valley Intl
$296
United Airlines
Apr 14
HRL5:18 pmHarlingen Valley Intl
6h 08m
1 stop
SAN9:26 pmSan Diego
Apr 15
SAN11:01 amSan Diego
8h 58m
2 stops
HRL9:59 pmHarlingen Valley Intl
$336

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen, Texas 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, momondo users made 832,500 searches. Data last updated March 19, 2026.
Use the filters below to find and compare flights from Harlingen, Texas to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Wed 4/29

5:55 pm-9:40 pm

1 stop5h 45m

San Diego

Tue 5/5

1:00 pm-10:00 pm

1 stop7h 00m

$237

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Wed 4/29

5:55 pm-9:40 pm

1 stop5h 45m

San Diego

Tue 5/5

12:30 pm-10:00 pm

2 stops7h 30m

$242

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Wed 4/29

12:05 pm-8:12 pm

2 stops10h 07m

San Diego

Tue 5/5

6:20 am-4:04 pm

2 stops7h 44m

$288

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Mon 4/20

6:00 pm-10:15 pm

1 stop6h 15m

San Diego

Mon 4/27

12:35 pm-11:00 pm

1 stop8h 25m

$295

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Fri 5/8

12:10 pm-5:53 pm

1 stop7h 43m

San Diego

Wed 5/13

6:15 am-4:04 pm

1 stop7h 49m

$296

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Mon 4/20

6:00 pm-11:05 pm

2 stops7h 05m

San Diego

Mon 4/27

12:35 pm-11:00 pm

1 stop8h 25m

$301

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Fri 5/8

6:00 pm-11:05 pm

2 stops7h 05m

San Diego

Wed 5/13

12:30 pm-10:00 pm

2 stops7h 30m

$327

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Mon 4/20

6:00 pm-11:05 pm

2 stops7h 05m

San Diego

Mon 4/27

6:55 am-5:25 pm

2 stops8h 30m

$335

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Tue 4/14

5:18 pm-9:26 pm

1 stop6h 08m

San Diego

Wed 4/15

11:01 am-9:59 pm

2 stops8h 58m

$336

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Tue 4/14

9:20 am-9:30 pm

2 stops14h 10m

San Diego

Wed 4/15

8:45 am-9:59 pm

2 stops11h 14m

$341

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Harlingen, Texas to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of October, then departing from Harlingen, Texas during the month June is also very affordable. Most momondo users find prices during this month for around $303.

When to book flights from Harlingen, Texas to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Harlingen, Texas to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Harlingen, Texas to San Diego (HRL to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen, Texas to San Diego

Fastest flight time

7h 15m

Direct flights

None
The fastest flight from Harlingen, Texas to San Diego takes 7h 15m
There are no direct flights from Harlingen, Texas to San Diego. There are no popular flight routes from Harlingen, Texas to San Diego.
Search flight deals

  • How far is Harlingen Valley Intl to San Diego by plane?

    The straight-line distance from Harlingen Valley Intl to San Diego is 1251.3 mi. Typically, this will take 7h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Harlingen Valley Intl Airport to San Diego Airport?

    Prices for flights from Harlingen Valley Intl Airport to San Diego Airport were last updated today.

  • How many operators does momondo search for flights from Harlingen Valley Intl Airport to San Diego Airport?

  • How old do you have to be to fly from Harlingen Valley Intl Airport to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Harlingen Valley Intl Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Harlingen, Texas to San Diego?

Best airlines flying from Harlingen, Texas to San Diego

Compare and see reviews for airlines that fly from Harlingen, Texas to San Diego with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $217Free CancellationRating
8.0
4,319 reviews
Search Southwest flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,439 reviews
Search United Airlines flights
American AirlinesPriceFrom $304Free CancellationRating
7.1
11,473 reviews
Search American Airlines flights

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
National City
Poway
San Ysidro
Imperial Beach
La Mesa
Borrego Springs
Alpine
Santee
Lemon Grove

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to San Diego?

Finding the right flight to San Diego from Harlingen is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Diego quick and easy, saving you time and money.

Can I find flights from Harlingen to San Diego with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Harlingen to San Diego flights to just show those with flexible booking policies.

How can momondo help me find flights from Harlingen to San Diego?

momondo provides multiple filters to help you find the best flight to San Diego from Harlingen. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Harlingen to San Diego right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Harlingen to San Diego flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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