Cheapest return flights from San Francisco to San Diego in December from 66€
AirHint found the following cheapest return flights from San Francisco (SFO) to San Diego (SAN)
in December 2025 (see full year ).
Return flights
12 Dec
- 15 Dec
United
66 €
direct
12 Dec
- 14 Dec
United
66 €
direct
04 Dec
- 07 Dec
Frontier Airlines
67 €
direct
05 Dec
- 07 Dec
Frontier Airlines
67 €
direct
03 Dec
- 05 Dec
Southwest Airlines
69 €
direct
05 Dec
- 05 Dec
Southwest Airlines
69 €
direct
01 Dec
- 07 Dec
Frontier Airlines
88 €
direct
01 Dec
- 05 Dec
Frontier Airlines
88 €
direct
01 Dec
- 03 Dec
Frontier Airlines
99 €
direct
22 Dec
- 14 Jan
United
108 €
18 Dec
- 25 Dec
Southwest Airlines
116 €
direct
28 Dec
- 06 Jan
United
134 €
direct
22 Dec
- 14 Jan
Alaska Airlines
139 €
direct
25 Dec
- 14 Jan
Southwest Airlines
181 €
direct
20 Dec
- 03 Jan
United
198 €
direct
Also check the deals for one-way flights from San Francisco to San Diego in December .
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers.
Only the cheapest flights are offered.
Select a price to book and secure these cheap prices.
Find us on social media
Feel free to contact us with any feedback or request another flight research.
Find us on social media