Ontario to San Diego
ONTSAN
Fly from Ontario to San Diego starting at SAR 925 with Frontier Airlines.
Best fare available on Sep 1, 2026.
Limited seats. Better plans. Book before it's gone.
Ontario to San Diego cheapest flights this week
Ontario to San Diego monthly flight fare trend
Sep
from SAR 925
Oct
No flights
Nov
No flights
Dec
No flights
Jan
No flights
Feb
No flights
Airport Details
Origin
Ontario
Ontario International Airport (ONT)
Ontario, ONT
Zone
Los Angeles
Elev
944 ft
Destination
San Diego
San Diego International Airport (SAN)
San Diego, SAN
Zone
Los Angeles
Elev
17 ft
