United Cheap Flights from Sacramento to San Diego: UA SMF→SAN

View HK$849 flight on Sun, 25 Jan 2026Opens in a new window
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Prices were available within the past 7 days and start at HK$849 for one-way flights and HK$1,508 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, 25 Jan - Sun, 1 Feb
SMF
Sacramento
SAN
San Diego
HK$1,508 Return, found 19 hours ago
HK$1,508
Return
found 19 hours ago
Select United flight, departing Sun, 25 Jan from Sacramento to San Diego, returning Sun, 1 Feb, priced at HK$1,508 found 19 hours ago
United
Sat, 10 Jan - Sun, 11 Jan
SMF
Sacramento
SAN
San Diego
HK$1,511 Return, found 19 hours ago
HK$1,511
Return
found 19 hours ago
Select United flight, departing Sat, 10 Jan from Sacramento to San Diego, returning Sun, 11 Jan, priced at HK$1,511 found 19 hours ago
United
Sun, 25 Jan - Sun, 1 Feb
SMF
Sacramento
SAN
San Diego
HK$1,733 Return, found 19 hours ago
HK$1,733
Return
found 19 hours ago
Select United flight, departing Sun, 25 Jan from Sacramento to San Diego, returning Sun, 1 Feb, priced at HK$1,733 found 19 hours ago
United
Sun, 25 Jan - Sun, 1 Feb
SMF
Sacramento
SAN
San Diego
HK$1,777 Return, found 19 hours ago
HK$1,777
Return
found 19 hours ago
Select United flight, departing Sun, 25 Jan from Sacramento to San Diego, returning Sun, 1 Feb, priced at HK$1,777 found 19 hours ago
United
Sat, 10 Jan - Sun, 11 Jan
SMF
Sacramento
SAN
San Diego
HK$1,780 Return, found 19 hours ago
HK$1,780
Return
found 19 hours ago
Select United flight, departing Sat, 10 Jan from Sacramento to San Diego, returning Sun, 11 Jan, priced at HK$1,780 found 19 hours ago
United
Sun, 25 Jan - Sun, 1 Feb
SMF
Sacramento
SAN
San Diego
HK$1,787 Return, found 19 hours ago
HK$1,787
Return
found 19 hours ago
Select United flight, departing Sun, 25 Jan from Sacramento to San Diego, returning Sun, 1 Feb, priced at HK$1,787 found 19 hours ago

Find the cheapest month to fly from Sacramento (SMF) to San Diego (SAN)

February is typically the cheapest month to fly

From HK$332 - HK$915 per traveller.
Sacramento to San Diego route information
Origin airport
Sacramento Intl.
Destination airport
San Diego Intl.
Distance
767 km
Average flight time
1 hour 30 mins

Frequently asked questions

How much is a United Airlines flight from Sacramento Intl. Airport (SMF) to San Diego Intl. Airport (SAN)?
You can discover cheap return United Airlines flights from HK$1,508 from SMF to SAN by sorting your results from "Price (lowest to highest)" on Expedia. Or search for options from HK$849 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SMF to SAN with United Airlines?
Look for return or one-way flights to San Diego in January or November. You could find a cheap fare with United Airlines during these quieter months.
Does United Airlines fly nonstop from Sacramento Intl. Airport (SMF) to San Diego Intl. Airport (SAN)?
Simply enter your dates, press search and check the "Nonstop" filter on Expedia to browse any direct flights from SMF to SAN with United Airlines or another airline.
What airports does United Airlines fly into in San Diego?
Hop on a United Airlines flight from Sacramento Intl. Airport (SMF) to San Diego, and you're most likely to arrive at San Diego Intl. Airport (SAN). This is the airline's primary hub here.
Can I change or cancel my United Airlines flight from Sacramento Intl. Airport (SMF) to San Diego Intl. Airport (SAN)?
It's usually possible to reschedule or cancel your flight, although additional charges may apply if you booked more than 24 hours ago. Need to keep your options open? Use our "No cancel fee" or "Changes included" filter to find flights that won't charge you extra if you have to alter your plans. To make changes, head to "Trips," select your flight and click on "Manage Booking" for more information.
*Available to Expedia members.