Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Harlingen to San Diego from $143

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 to San Diego departing on 5/29. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:15 am - 10:55 am
HRL
-
SAN
7h 40m
1 stop
United Airlines Logo
8:00 am - 3:34 pm
SAN
-
HRL
5h 34m
1 stop
$279United Airlines
Fri, Aug 28 - Sat, Aug 29
United Airlines Logo
5:15 am - 11:35 am
HRL
-
SAN
8h 20m
2 stops
United Airlines Logo
8:00 am - 3:34 pm
SAN
-
HRL
5h 34m
1 stop
$284United Airlines
Fri, Aug 28 - Sat, Aug 29
Southwest Logo
7:05 am - 12:00 pm
HRL
-
SAN
6h 55m
1 stop
Southwest Logo
4:25 pm - 11:40 pm
SAN
-
HRL
5h 15m
1 stop
$298Southwest
Tue, Jul 7 - Fri, Jul 10
United Airlines Logo
5:15 am - 11:35 am
HRL
-
SAN
8h 20m
2 stops
United Airlines Logo
6:20 am - 3:34 pm
SAN
-
HRL
7h 14m
2 stops
$317United Airlines
Fri, Aug 28 - Sat, Aug 29
Southwest Logo
7:05 am - 12:00 pm
HRL
-
SAN
6h 55m
1 stop
Southwest Logo
1:55 pm - 11:40 pm
SAN
-
HRL
7h 45m
2 stops
$333Southwest
Tue, Jul 7 - Fri, Jul 10
United Airlines Logo
5:20 pm - 9:24 pm
HRL
-
SAN
6h 04m
1 stop
United Airlines Logo
6:15 am - 3:59 pm
SAN
-
HRL
7h 44m
1 stop
$358United Airlines
Wed, Jul 1 - Thu, Jul 9
United Airlines Logo
2:00 pm - 5:46 pm
HRL
-
SAN
5h 46m
1 stop
United Airlines Logo
8:00 am - 3:34 pm
SAN
-
HRL
5h 34m
1 stop
$369United Airlines
Tue, Aug 25 - Wed, Aug 26
Southwest Logo
4:15 pm - 7:40 pm
HRL
-
SAN
5h 25m
1 stop
Southwest Logo
6:35 am - 1:30 pm
SAN
-
HRL
4h 55m
1 stop
$373Southwest
Sat, Jul 4 - Tue, Jul 14
United Airlines Logo
5:15 am - 12:13 pm
HRL
-
SAN
8h 58m
2 stops
United Airlines Logo
12:01 pm - 9:44 pm
SAN
-
HRL
7h 43m
1 stop
$374United Airlines
Tue, Aug 25 - Wed, Aug 26
American Airlines Logo
8:04 pm - 11:59 pm
HRL
-
SAN
5h 55m
1 stop
American Airlines Logo
8:05 am - 4:25 pm
SAN
-
HRL
6h 20m
1 stop
$378American Airlines
Fri, Jun 5 - Sun, Jun 7

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Southwest flights from Harlingen to San Diego

Our best Southwest deals on Harlingen to San Diego flight tickets
Southwest
Jul 7
HRL7:05 amHarlingen Valley Intl
6h 55m
1 stop
SAN12:00 pmSan Diego
Jul 10
SAN4:25 pmSan Diego
5h 15m
1 stop
HRL11:40 pmHarlingen Valley Intl
$298
Southwest
Jul 7
HRL7:05 amHarlingen Valley Intl
6h 55m
1 stop
SAN12:00 pmSan Diego
Jul 10
SAN1:55 pmSan Diego
7h 45m
2 stops
HRL11:40 pmHarlingen Valley Intl
$333
Southwest
Jul 4
HRL4:15 pmHarlingen Valley Intl
5h 25m
1 stop
SAN7:40 pmSan Diego
Jul 14
SAN6:35 amSan Diego
4h 55m
1 stop
HRL1:30 pmHarlingen Valley Intl
$373

United Airlines flights from Harlingen to San Diego

Our best United Airlines deals on Harlingen to San Diego flight tickets
United Airlines
Aug 28
HRL5:15 amHarlingen Valley Intl
7h 40m
1 stop
SAN10:55 amSan Diego
Aug 29
SAN8:00 amSan Diego
5h 34m
1 stop
HRL3:34 pmHarlingen Valley Intl
$279
United Airlines
Aug 28
HRL5:15 amHarlingen Valley Intl
8h 20m
2 stops
SAN11:35 amSan Diego
Aug 29
SAN8:00 amSan Diego
5h 34m
1 stop
HRL3:34 pmHarlingen Valley Intl
$284
United Airlines
Aug 28
HRL5:15 amHarlingen Valley Intl
8h 20m
2 stops
SAN11:35 amSan Diego
Aug 29
SAN6:20 amSan Diego
7h 14m
2 stops
HRL3:34 pmHarlingen Valley Intl
$317

momondo 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, momondo users made 832,500 searches. Data last updated April 29, 2026.
Use the filters below to find and compare flights from Harlingen to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Fri 8/28

5:15 am-10:55 am

1 stop7h 40m

San Diego

Sat 8/29

8:00 am-3:34 pm

1 stop5h 34m

$279

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Fri 8/28

5:15 am-11:35 am

2 stops8h 20m

San Diego

Sat 8/29

8:00 am-3:34 pm

1 stop5h 34m

$284

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Tue 7/7

7:05 am-12:00 pm

1 stop6h 55m

San Diego

Fri 7/10

4:25 pm-11:40 pm

1 stop5h 15m

$298

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Fri 8/28

5:15 am-11:35 am

2 stops8h 20m

San Diego

Sat 8/29

6:20 am-3:34 pm

2 stops7h 14m

$317

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Tue 7/7

7:05 am-12:00 pm

1 stop6h 55m

San Diego

Fri 7/10

1:55 pm-11:40 pm

2 stops7h 45m

$333

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Wed 7/1

5:20 pm-9:24 pm

1 stop6h 04m

San Diego

Thu 7/9

6:15 am-3:59 pm

1 stop7h 44m

$358

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Tue 8/25

2:00 pm-5:46 pm

1 stop5h 46m

San Diego

Wed 8/26

8:00 am-3:34 pm

1 stop5h 34m

$369
Quickest round-trip

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Sat 7/4

4:15 pm-7:40 pm

1 stop5h 25m

San Diego

Tue 7/14

6:35 am-1:30 pm

1 stop4h 55m

$373

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Tue 8/25

5:15 am-12:13 pm

2 stops8h 58m

San Diego

Wed 8/26

12:01 pm-9:44 pm

1 stop7h 43m

$374

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

Fri 6/5

8:04 pm-11:59 pm

1 stop5h 55m

San Diego

Sun 6/7

8:05 am-4:25 pm

1 stop6h 20m

$378

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

See travel insights to San Diego from

How to get the cheapest flight ticket from Harlingen 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 typical price of a round-trip flight between Harlingen and San Diego?

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of March, then departing from Harlingen during the month October is also very affordable. Most momondo users find prices during this month for around $258.

When to book flights from Harlingen to San Diego

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

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

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

Fastest flight time

5h 25m

Direct flights

None
The fastest flight from Harlingen to San Diego takes 5h 25m
There are no direct flights from Harlingen to San Diego. There are no popular flight routes from Harlingen to San Diego.
Search flight deals

Frequently asked questions about flying from Harlingen to San Diego

  • 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 5h 25m 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 to San Diego?

Best airlines flying from Harlingen to San Diego

Compare and see reviews for airlines that fly from Harlingen to San Diego with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $143Free CancellationRating
8.0
4,314 reviews
Search Southwest flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,680 reviews
Search United Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,678 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
La Mesa
Imperial Beach
Borrego Springs
Lemon Grove
Alpine
Santee

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.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 5/29
Fri 6/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States