$158+ Cheap flights from San Diego to Harlingen (SAN - HRL)
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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — HRL
Jun 25 — Jul 21
Round-trip
1 adult, Economy
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Find cheap flights from San Diego to Harlingen with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Diego to Harlingen
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Diego to HarlingenExplore the most affordable flight options available from San Diego to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 26, 2026.
Explore the most affordable flight options available from San Diego to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 26, 2026.
This United Airlines deal was found by Cheapflights users on 5/24. 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 8/188:00 am
SAN
- HRL
1 stop5h 59m
United Airlines
Sat 8/225:18 pm
HRL
- SAN
1 stop6h 07m
United Airlines
Deal found 5/24![United Airlines logo]()
$347
This American Airlines deal was found by Cheapflights users on 5/22. 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.
Sat 6/612:46 pm
SAN
- HRL
2 stops9h 28m
American Airlines
Wed 6/108:04 pm
HRL
- SAN
1 stop5h 55m
American Airlines
Deal found 5/22![American Airlines logo]()
$392
This Southwest deal was found by Cheapflights users on 5/21. 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 6/277:20 am
SAN
- HRL
1 stop11h 25m
Southwest
Fri 7/35:35 pm
HRL
- SAN
1 stop5h 45m
Southwest
Deal found 5/21![Southwest logo]()
$393
This American Airlines deal was found by Cheapflights users on 5/23. 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.
Thu 6/114:33 pm
SAN
- HRL
1 stop5h 41m
American Airlines
Mon 6/158:04 pm
HRL
- SAN
1 stop5h 55m
American Airlines
Deal found 5/23![American Airlines logo]()
$413
This Southwest deal was found by Cheapflights users on 5/23. 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.
Mon 6/222:45 pm
SAN
- HRL
2 stops6h 55m
Southwest
Mon 6/295:35 pm
HRL
- SAN
2 stops7h 40m
Southwest
Deal found 5/23![Southwest logo]()
$416
This United Airlines deal was found by Cheapflights users on 5/25. 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 10/278:50 am
SAN
- HRL
2 stops10h 54m
United Airlines
Wed 10/2812:10 pm
HRL
- SAN
2 stops9h 39m
United Airlines
Deal found 5/25![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Sat 6/66:15 am
SAN
- HRL
1 stop7h 44m
United Airlines
Wed 6/105:20 pm
HRL
- SAN
1 stop6h 04m
United Airlines
Deal found 5/22![United Airlines logo]()
$436
Best flights from San Diego to HarlingenDiscover carefully curated flight deals from San Diego to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 26, 2026.
Discover carefully curated flight deals from San Diego to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 26, 2026.
This United Airlines deal was found by Cheapflights users on 5/24. 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 8/188:00 am
SAN
- HRL
1 stop5h 59m
United Airlines
Sat 8/225:18 pm
HRL
- SAN
1 stop6h 07m
United Airlines
Deal found 5/24![United Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 5/23. 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.
Mon 6/222:45 pm
SAN
- HRL
2 stops6h 55m
Southwest
Mon 6/296:30 pm
HRL
- SAN
1 stop5h 20m
Southwest
Deal found 5/23![Southwest logo]()
$397
This American Airlines deal was found by Cheapflights users on 5/22. 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.
Sat 6/612:46 pm
SAN
- HRL
2 stops9h 28m
American Airlines
Wed 6/1010:43 am
HRL
- SAN
2 stops9h 36m
American Airlines
Deal found 5/22![American Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 5/21. 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 6/277:20 am
SAN
- HRL
1 stop11h 25m
Southwest
Fri 7/35:35 pm
HRL
- SAN
2 stops7h 40m
Southwest
Deal found 5/21![Southwest logo]()
$399
This American Airlines deal was found by Cheapflights users on 5/23. 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.
Thu 6/114:33 pm
SAN
- HRL
1 stop5h 41m
American Airlines
Mon 6/158:04 pm
HRL
- SAN
1 stop5h 55m
American Airlines
Deal found 5/23![American Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 5/25. 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 10/278:50 am
SAN
- HRL
2 stops10h 54m
United Airlines
Wed 10/2812:10 pm
HRL
- SAN
2 stops9h 39m
United Airlines
Deal found 5/25![United Airlines logo]()
$429
This Southwest deal was found by Cheapflights users on 5/23. 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.
Thu 6/118:00 am
SAN
- HRL
2 stops7h 00m
Southwest
Mon 6/151:00 pm
HRL
- SAN
2 stops7h 45m
Southwest
Deal found 5/23![Southwest logo]()
$466
Last-minute flights from San Diego to HarlingenDiscover last-minute flight deals from San Diego to Harlingen. Data last updated May 26, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Harlingen. Data last updated May 26, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/22. 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.
Sat 6/612:46 pm
SAN
- HRL
2 stops9h 28m
American Airlines
Wed 6/108:04 pm
HRL
- SAN
1 stop5h 55m
American Airlines
Deal found 5/22![American Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Sat 6/66:15 am
SAN
- HRL
1 stop7h 44m
United Airlines
Wed 6/105:20 pm
HRL
- SAN
1 stop6h 04m
United Airlines
Deal found 5/22![United Airlines logo]()
$436
This American Airlines deal was found by Cheapflights users on 5/23. 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.
Thu 6/114:33 pm
SAN
- HRL
1 stop5h 41m
American Airlines
Mon 6/158:04 pm
HRL
- SAN
1 stop5h 55m
American Airlines
Deal found 5/23![American Airlines logo]()
$413
This Southwest deal was found by Cheapflights users on 5/23. 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.
Thu 6/114:25 pm
SAN
- HRL
1 stop5h 15m
Southwest
Mon 6/151:00 pm
HRL
- SAN
2 stops7h 45m
Southwest
Deal found 5/23![Southwest logo]()
$461
This Southwest deal was found by Cheapflights users on 5/25. 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 6/136:40 am
SAN
- HRL
1 stop7h 50m
Southwest
Sat 6/204:10 pm
HRL
- SAN
2 stops8h 10m
Southwest
Deal found 5/25![Southwest logo]()
$502
This Southwest deal was found by Cheapflights users on 5/23. 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.
Mon 6/222:45 pm
SAN
- HRL
2 stops6h 55m
Southwest
Mon 6/295:35 pm
HRL
- SAN
2 stops7h 40m
Southwest
Deal found 5/23![Southwest logo]()
$416
This Southwest deal was found by Cheapflights users on 5/21. 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 6/277:20 am
SAN
- HRL
1 stop11h 25m
Southwest
Fri 7/35:35 pm
HRL
- SAN
1 stop5h 45m
Southwest
Deal found 5/21![Southwest logo]()
$393
One-way flights from San Diego to HarlingenSearch for one-way flight options from San Diego to Harlingen. Find affordable one-way fares based on user searches. Data last updated May 26, 2026.
Search for one-way flight options from San Diego to Harlingen. Find affordable one-way fares based on user searches. Data last updated May 26, 2026.
This American Airlines deal was found by Cheapflights users on 5/24. 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.
Sat 9/53:05 pm
SAN
- HRL
1 stop5h 49m
American Airlines
Deal found 5/24![American Airlines logo]()
$158
This American Airlines deal was found by Cheapflights users on 5/25. 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 6/24:33 pm
SAN
- HRL
1 stop5h 41m
American Airlines
Deal found 5/25![American Airlines logo]()
$196
This Southwest deal was found by Cheapflights users on 5/22. 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.
Sun 6/146:35 am
SAN
- HRL
2 stops9h 35m
Southwest
Deal found 5/22![Southwest logo]()
$265
Find flight deals from San Diego to Harlingen
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Harlingen (HRL). 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 May 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $347 (United Airlines) |
One-way from | $158 (American Airlines) |
Popular in | August |
Cheapest in | May |
Average price | $343 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to Harlingen 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 May 26, 2026.
Use the filters below to find and compare flights from San Diego to Harlingen that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Tue 8/18
8:00 am-3:59 pm
1 stop5h 59m
Harlingen Valley Intl
Sat 8/22
5:18 pm-9:25 pm
1 stop6h 07m
$347
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Mon 6/22
2:45 pm-11:40 pm
2 stops6h 55m
Harlingen Valley Intl
Mon 6/29
6:30 pm-9:50 pm
1 stop5h 20m
$397
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Sat 6/6
12:46 pm-12:14 am
2 stops9h 28m
Harlingen Valley Intl
Wed 6/10
10:43 am-6:19 pm
2 stops9h 36m
$397
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Sat 6/27
7:20 am-8:45 pm
1 stop11h 25m
Harlingen Valley Intl
Fri 7/3
5:35 pm-11:15 pm
2 stops7h 40m
$399
Quickest round-trip
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Thu 6/11
4:33 pm-12:14 am
1 stop5h 41m
Harlingen Valley Intl
Mon 6/15
8:04 pm-11:59 pm
1 stop5h 55m
$413
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Tue 10/27
8:50 am-9:44 pm
2 stops10h 54m
Harlingen Valley Intl
Wed 10/28
12:10 pm-7:49 pm
2 stops9h 39m
$429
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Thu 6/11
8:00 am-5:00 pm
2 stops7h 00m
Harlingen Valley Intl
Mon 6/15
1:00 pm-6:45 pm
2 stops7h 45m
$466
Cheapest one-way
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Sat 9/5
3:05 pm-10:54 pm
1 stop5h 49m
$158
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Wed 6/3
6:15 am-4:25 pm
1 stop8h 10m
$196
Quickest one-way
San DiegoHarlingen
SAN - HRL
SANHRL
San Diego
Tue 6/2
4:33 pm-12:14 am
1 stop5h 41m
$196
Showing 1-10 of 12 resultsSorted by cheapest first
Compare providers for flights from San Diego to Harlingen
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Harlingen in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Diego-Harlingen flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Harlingen flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Harlingen flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-Harlingen flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Harlingen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Diego to Harlingen
Have a flexible travel schedule? Discover the best time to fly to Harlingen from San Diego with our price prediction graph.
SAN-HRL
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 San Diego to Harlingen
Reviews of airlines servicing Harlingen
Get insights into the airlines that provide service to Harlingen. 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 Harlingen. Reviews last updated May 26, 2026.
Read reviews from past customers who have flown Southwest from San Diego to Harlingen. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Boarding
8.1
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Related info for your journey
Find useful and relevant information for your journey from San Diego to Harlingen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Harlingen by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Diego to Harlingen by cabin class
Find flights from San Diego to Harlingen, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Harlingen
Explore flights to Harlingen departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 26, 2026.
San Diego and Harlingen flights
Browse other San Diego and Harlingen flight options. Last updated on May 26, 2026.
Other flights from San Diego
Browse through other flights departing from San Diego. Flights are based on user searches made on Cheapflights and were last updated on May 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from San Diego to Harlingen
Discover the top airline that operate flights from San Diego to Harlingen. 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 May 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$237 | Average$388 | FlexibilityNo cancel fee | On-time63% |