Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Harlingen, Texas to San Diego from $210

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 9/26. 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.

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

Find the cheapest flights from Harlingen, Texas to San Diego

Cheap round-trip flights

Southwest Logo
6:10 pm - 9:35 pmHRL-SAN
5h 25m1 stop
Southwest Logo
2:30 pm - 9:05 pmSAN-HRL
4h 35m1 stop
$217Southwest
Find Deal
mié., oct. 29 - mar., nov. 4
American Airlines Logo
6:37 pm - 10:24 pmHRL-SAN
5h 47m1 stop
American Airlines Logo
2:29 pm - 11:04 pmSAN-HRL
6h 35m1 stop
$227American Airlines
Find Deal
mié., oct. 29 - sáb., nov. 1
United Airlines Logo
5:00 am - 10:53 amHRL-SAN
7h 53m1 stop
United Airlines Logo
10:15 am - 7:41 pmSAN-HRL
7h 26m1 stop
$245United Airlines
Find Deal
mar., oct. 14 - mar., oct. 21
United Airlines Logo
5:00 am - 10:53 amHRL-SAN
7h 53m1 stop
United Airlines Logo
11:08 am - 11:18 pmSAN-HRL
10h 10m2 stops
$250United Airlines
Find Deal
mar., oct. 14 - mar., oct. 21
American Airlines Logo
6:37 pm - 10:24 pmHRL-SAN
5h 47m1 stop
American Airlines Logo
7:21 am - 3:32 pmSAN-HRL
6h 11m1 stop
$258American Airlines
Find Deal
mié., oct. 29 - lun., nov. 3
American Airlines Logo
6:37 pm - 10:24 pmHRL-SAN
5h 47m1 stop
American Airlines Logo
12:50 pm - 11:14 pmSAN-HRL
8h 24m2 stops
$263American Airlines
Find Deal
mié., oct. 29 - mar., nov. 4
Southwest Logo
11:45 am - 5:35 pmHRL-SAN
7h 50m2 stops
Southwest Logo
7:35 am - 9:25 pmSAN-HRL
11h 50m1 stop
$279Southwest
Find Deal
mié., oct. 29 - sáb., nov. 1
United Airlines Logo
2:05 pm - 6:10 pmHRL-SAN
6h 05m1 stop
United Airlines Logo
12:00 pm - 7:41 pmSAN-HRL
5h 41m1 stop
$296United Airlines
Find Deal
jue., oct. 9 - sáb., oct. 11
United Airlines Logo
2:05 pm - 10:44 pmHRL-SAN
10h 39m2 stops
United Airlines Logo
6:15 am - 4:13 pmSAN-HRL
7h 58m2 stops
$299United Airlines
Find Deal
mar., oct. 14 - mar., oct. 21
United Airlines Logo
2:05 pm - 6:10 pmHRL-SAN
6h 05m1 stop
United Airlines Logo
6:15 am - 7:41 pmSAN-HRL
11h 26m2 stops
$301United Airlines
Find Deal
jue., oct. 9 - sáb., oct. 11

Southwest flights from Harlingen, Texas to San Diego

Our best Southwest deals on Harlingen, Texas to San Diego flight tickets
Southwest
Oct 29
HRL6:10 pmHarlingen Valley Intl
5h 25m
1 stop
SAN9:35 pmSan Diego
Nov 4
SAN2:30 pmSan Diego
4h 35m
1 stop
HRL9:05 pmHarlingen Valley Intl
$217
Find similar
Southwest
Oct 29
HRL11:45 amHarlingen Valley Intl
7h 50m
2 stops
SAN5:35 pmSan Diego
Nov 1
SAN7:35 amSan Diego
11h 50m
1 stop
HRL9:25 pmHarlingen Valley Intl
$279
Find similar
Southwest
Oct 29
HRL11:45 amHarlingen Valley Intl
7h 50m
2 stops
SAN5:35 pmSan Diego
Nov 1
SAN9:15 amSan Diego
10h 10m
2 stops
HRL9:25 pmHarlingen Valley Intl
$379
Find similar

United Airlines flights from Harlingen, Texas to San Diego

Our best United Airlines deals on Harlingen, Texas to San Diego flight tickets
United Airlines
Oct 14
HRL5:00 amHarlingen Valley Intl
7h 53m
1 stop
SAN10:53 amSan Diego
Oct 21
SAN10:15 amSan Diego
7h 26m
1 stop
HRL7:41 pmHarlingen Valley Intl
$245
Find similar
United Airlines
Oct 14
HRL5:00 amHarlingen Valley Intl
7h 53m
1 stop
SAN10:53 amSan Diego
Oct 21
SAN11:08 amSan Diego
10h 10m
2 stops
HRL11:18 pmHarlingen Valley Intl
$250
Find similar
United Airlines
Oct 9
HRL2:05 pmHarlingen Valley Intl
6h 05m
1 stop
SAN6:10 pmSan Diego
Oct 11
SAN12:00 pmSan Diego
5h 41m
1 stop
HRL7:41 pmHarlingen Valley Intl
$296
Find similar

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 septiembre 18, 2025.
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

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

mié. 10/29

6:10 pm-9:35 pm

1 stop5h 25m

San Diego

mar. 11/4

2:30 pm-9:05 pm

1 stop4h 35m

$217

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

mié. 10/29

6:37 pm-10:24 pm

1 stop5h 47m

San Diego

sáb. 11/1

2:29 pm-11:04 pm

1 stop6h 35m

$227

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

mar. 10/14

5:00 am-10:53 am

1 stop7h 53m

San Diego

mar. 10/21

10:15 am-7:41 pm

1 stop7h 26m

$245

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

mar. 10/14

5:00 am-10:53 am

1 stop7h 53m

San Diego

mar. 10/21

11:08 am-11:18 pm

2 stops10h 10m

$250

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

mié. 10/29

6:37 pm-10:24 pm

1 stop5h 47m

San Diego

lun. 11/3

7:21 am-3:32 pm

1 stop6h 11m

$258

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

mié. 10/29

6:37 pm-10:24 pm

1 stop5h 47m

San Diego

mar. 11/4

12:50 pm-11:14 pm

2 stops8h 24m

$263

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

mié. 10/29

11:45 am-5:35 pm

2 stops7h 50m

San Diego

sáb. 11/1

7:35 am-9:25 pm

1 stop11h 50m

$279

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

jue. 10/9

2:05 pm-6:10 pm

1 stop6h 05m

San Diego

sáb. 10/11

12:00 pm-7:41 pm

1 stop5h 41m

$296

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

mar. 10/14

2:05 pm-10:44 pm

2 stops10h 39m

San Diego

mar. 10/21

6:15 am-4:13 pm

2 stops7h 58m

$299

HarlingenSan Diego

HRL - SAN

HRLSAN

Harlingen Valley Intl

jue. 10/9

2:05 pm-6:10 pm

1 stop6h 05m

San Diego

sáb. 10/11

6:15 am-7:41 pm

2 stops11h 26m

$301

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 January, then departing from Harlingen, Texas during the month October is also very affordable. Most momondo users find prices during this month for around $258.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Harlingen, Texas to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $287. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $463. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the afternoon when flights can be purchased for as low as $372. Flights in the morning are often more expensive with an average ticket price of $380.

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

Direct flights

None
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 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, 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 $179Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $208Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $274Free CancellationRating
7.2
10,000 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
La Mesa
National City
Poway
Imperial Beach
San Ysidro
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
sáb. 10/18
sáb. 10/25
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States