Earn point on your loyalty program!arrow arc left

Cheap flights from Harlingen (HRL) to San Diego (SAN)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Harlingen (HRL) to San Diego (SAN)

How to find the cheapest flight from Harlingen (HRL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Harlingen (HRL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Harlingen (HRL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Harlingen to San Diego in December 2025 , January 2026

19 Dec - 07 Jan $ 435.00
HRL
Harlingen
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
HRL
Harlingen
Pick dates
19 Dec - 06 Jan $ 435.00
HRL
Harlingen
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
HRL
Harlingen
Pick dates
19 Dec - 07 Jan $ 435.00
HRL
Harlingen
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
HRL
Harlingen
Pick dates

Last minute flights from Harlingen to San Diego

25 Dec - 01 Jan $ 803.00
HRL
Harlingen
Sun Country Airlines
2 STOPS
SAN
San Diego
SAN
San Diego
Sun Country Airlines
2 STOPS
HRL
Harlingen
Pick dates
28 Dec - 01 Jan $ 892.00
HRL
Harlingen
Sun Country Airlines
3 STOPS
SAN
San Diego
SAN
San Diego
Sun Country Airlines
2 STOPS
HRL
Harlingen
Pick dates
30 Dec - 01 Jan $ 903.00
HRL
Harlingen
Sun Country Airlines
3 STOPS
SAN
San Diego
SAN
San Diego
Sun Country Airlines
2 STOPS
HRL
Harlingen
Pick dates

One-way flights to San Diego from Harlingen

7:00 AM - 9:30 AM
United Airlines
1 Stops
6h 5m
HRL - SAN
$ 203
Kiwi
Pick dates
5:00 AM - 9:30 AM
United Airlines
1 Stops
8h 5m
HRL - SAN
$ 203
Kiwi
Pick dates
12:15 PM - 2:20 PM
United Airlines
1 Stops
5h 46m
HRL - SAN
$ 332
Kiwi
Pick dates

How to find the cheapest flight from Harlingen (HRL) to San Diego (SAN)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Harlingen (HRL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Harlingen (HRL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.