$61+ Cheap flights from Fremont, CA to San Diego (SAN)
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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SAN
Apr 25 — May 21
Round-trip
1 adult, Economy
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Find cheap flights from Fremont to San Diego 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.Cheapflights Tip: The best prices from Fremont to San Diego are usually found in July or June, booked 72 days in advance, depart on a Tuesday or Monday and return on a Friday
Cheap flight deals from Fremont to San Diego
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Cheapest flights from Fremont to San DiegoExplore the most affordable flight options available from Fremont to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2026.
Explore the most affordable flight options available from Fremont to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2026.
This Southwest deal was found by Cheapflights users on 3/26. 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.
Wed 4/223:55 pm
SFO
- SAN
Nonstop1h 35m
Southwest
Fri 4/2410:40 am
SAN
- SFO
2 stops6h 20m
Southwest
Deal found 3/26![Southwest logo]()
$116
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Thu 4/237:00 am
SFO
- SAN
Nonstop1h 44m
United Airlines
Thu 4/304:26 pm
SAN
- SFO
Nonstop1h 43m
United Airlines
Deal found 3/25![United Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 3/25. 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.
Fri 5/86:00 am
SFO
- SAN
Nonstop1h 35m
Southwest
Mon 5/118:45 pm
SAN
- SFO
Nonstop1h 40m
Southwest
Deal found 3/25![Southwest logo]()
$118
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:31 am
SFO
- SAN
Nonstop1h 40m
Alaska Airlines
Sat 4/253:35 pm
SAN
- SFO
Nonstop1h 46m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$119
This Southwest deal was found by Cheapflights users on 3/26. 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 4/165:05 am
SFO
- SAN
1 stop4h 35m
Southwest
Sat 4/187:15 am
SAN
- SFO
1 stop4h 35m
Southwest
Deal found 3/26![Southwest logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:06 pm
SFO
- SAN
Nonstop1h 43m
Frontier
Tue 7/77:31 pm
SAN
- SFO
Nonstop1h 50m
Frontier
Deal found 3/23![Frontier logo]()
$121
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:35 am
SFO
- SAN
Nonstop1h 40m
Alaska Airlines
Tue 4/218:59 pm
SAN
- SFO
Nonstop1h 53m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$122
This Orbitz deal was found by Cheapflights users on 3/24. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/110:06 pm
SFO
- SAN
Nonstop1h 43m
Frontier
Sat 7/47:31 pm
SAN
- SFO
Nonstop1h 50m
Frontier
Deal found 3/24![Frontier logo]()
$123
This Booking.com deal was found by Cheapflights users on 3/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/309:58 am
SFO
- SAN
Nonstop1h 42m
Frontier
Mon 5/412:25 pm
SAN
- SFO
1 stop12h 02m
Frontier
Deal found 3/26![Frontier logo]()
$124
This Southwest deal was found by Cheapflights users on 3/26. 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 5/211:45 am
SFO
- SAN
2 stops7h 00m
Southwest
Mon 5/45:55 pm
SAN
- SFO
1 stop6h 15m
Southwest
Deal found 3/26![Southwest logo]()
$125
This Southwest deal was found by Cheapflights users on 3/26. 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.
Tue 4/215:55 am
SFO
- SAN
1 stop4h 55m
Southwest
Fri 4/2410:40 am
SAN
- SFO
2 stops6h 20m
Southwest
Deal found 3/26![Southwest logo]()
$126
This Southwest deal was found by Cheapflights users on 3/25. 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.
Thu 4/165:05 am
SFO
- SAN
1 stop4h 35m
Southwest
Thu 4/2312:50 pm
SAN
- SFO
Nonstop1h 45m
Southwest
Deal found 3/25![Southwest logo]()
$127
Best flights from Fremont to San DiegoDiscover carefully curated flight deals from Fremont to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 26, 2026.
Discover carefully curated flight deals from Fremont to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 26, 2026.
This Southwest deal was found by Cheapflights users on 3/21. 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.
Wed 5/67:20 am
SFO
- SAN
2 stops7h 00m
Southwest
Sat 5/95:15 pm
SAN
- SFO
Nonstop1h 40m
Southwest
Deal found 3/21![Southwest logo]()
$132
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:00 am
SFO
- SAN
1 stop3h 24m
Delta
Mon 4/2710:05 am
SAN
- SFO
1 stop5h 16m
Delta
Deal found 3/26![Delta logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:07 pm
SFO
- SAN
1 stop10h 09m
Alaska Airlines
Tue 4/2811:05 am
SAN
- SFO
Nonstop1h 43m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$182
This Southwest deal was found by Cheapflights users on 3/22. 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 4/126:00 am
SFO
- SAN
Nonstop1h 35m
Southwest
Tue 4/146:30 pm
SAN
- SFO
1 stop4h 45m
Southwest
Deal found 3/22![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 3/21. 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.
Thu 4/1610:10 am
SFO
- SAN
Nonstop1h 35m
Southwest
Sat 4/187:15 am
SAN
- SFO
1 stop4h 35m
Southwest
Deal found 3/21![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 3/26. 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 4/2511:05 am
SFO
- SAN
1 stop5h 05m
Southwest
Mon 4/276:20 am
SAN
- SFO
Nonstop1h 50m
Southwest
Deal found 3/26![Southwest logo]()
$160
This Southwest deal was found by Cheapflights users on 3/26. 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.
Wed 4/158:55 am
SFO
- SAN
1 stop4h 50m
Southwest
Sat 4/187:15 am
SAN
- SFO
1 stop4h 35m
Southwest
Deal found 3/26![Southwest logo]()
$162
This Delta deal was found by Cheapflights users on 3/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:00 am
SFO
- SAN
1 stop3h 24m
Delta
Wed 4/226:20 am
SAN
- SFO
1 stop3h 30m
Delta
Deal found 3/23![Delta logo]()
$238
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:55 pm
SFO
- SAN
1 stop4h 41m
Delta
Sat 6/133:00 pm
SAN
- SFO
1 stop4h 46m
Delta
Deal found 3/24![Delta logo]()
$243
This Southwest deal was found by Cheapflights users on 3/22. 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.
Fri 5/811:10 am
SFO
- SAN
1 stop6h 50m
Southwest
Sat 5/98:35 am
SAN
- SFO
2 stops8h 50m
Southwest
Deal found 3/22![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 3/25. 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.
Sun 5/246:05 am
SFO
- SAN
Nonstop1h 35m
Southwest
Sun 5/242:40 pm
SAN
- SFO
2 stops7h 00m
Southwest
Deal found 3/25![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 3/25. 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.
Thu 4/233:00 pm
SFO
- SAN
2 stops6h 10m
Southwest
Mon 4/274:20 pm
SAN
- SFO
2 stops5h 50m
Southwest
Deal found 3/25![Southwest logo]()
$243
Last-minute flights from Fremont to San DiegoDiscover last-minute flight deals from Fremont to San Diego. Data last updated March 26, 2026 and is based on user searches.
Discover last-minute flight deals from Fremont to San Diego. Data last updated March 26, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 3/26. 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 4/165:05 am
SFO
- SAN
1 stop4h 35m
Southwest
Sat 4/187:15 am
SAN
- SFO
1 stop4h 35m
Southwest
Deal found 3/26![Southwest logo]()
$120
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:35 am
SFO
- SAN
Nonstop1h 40m
Alaska Airlines
Tue 4/218:59 pm
SAN
- SFO
Nonstop1h 53m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$122
This Southwest deal was found by Cheapflights users on 3/25. 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.
Thu 4/165:05 am
SFO
- SAN
1 stop4h 35m
Southwest
Thu 4/2312:50 pm
SAN
- SFO
Nonstop1h 45m
Southwest
Deal found 3/25![Southwest logo]()
$127
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/179:58 am
SFO
- SAN
Nonstop1h 42m
Frontier
Thu 4/239:19 am
SAN
- SFO
Nonstop1h 52m
Frontier
Deal found 3/23![Frontier logo]()
$128
This Expedia deal was found by Cheapflights users on 3/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:35 am
SFO
- SAN
Nonstop1h 40m
Multiple Airlines
Mon 4/209:19 am
SAN
- SFO
Nonstop1h 52m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$123
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:31 am
SFO
- SAN
Nonstop1h 40m
Alaska Airlines
Sat 4/253:35 pm
SAN
- SFO
Nonstop1h 46m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$119
This Southwest deal was found by Cheapflights users on 3/26. 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.
Tue 4/215:55 am
SFO
- SAN
1 stop4h 55m
Southwest
Fri 4/2410:40 am
SAN
- SFO
2 stops6h 20m
Southwest
Deal found 3/26![Southwest logo]()
$126
This Southwest deal was found by Cheapflights users on 3/26. 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.
Wed 4/223:55 pm
SFO
- SAN
Nonstop1h 35m
Southwest
Fri 4/2410:40 am
SAN
- SFO
2 stops6h 20m
Southwest
Deal found 3/26![Southwest logo]()
$116
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Thu 4/237:00 am
SFO
- SAN
Nonstop1h 44m
United Airlines
Thu 4/304:26 pm
SAN
- SFO
Nonstop1h 43m
United Airlines
Deal found 3/25![United Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 3/26. 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 4/2511:05 am
SFO
- SAN
1 stop5h 05m
Southwest
Mon 4/274:20 pm
SAN
- SFO
2 stops5h 50m
Southwest
Deal found 3/26![Southwest logo]()
$125
This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/309:58 am
SFO
- SAN
Nonstop1h 42m
Frontier
Mon 5/48:38 am
SAN
- SFO
1 stop7h 06m
Frontier
Deal found 3/25![Frontier logo]()
$118
One-way flights from Fremont to San DiegoSearch for one-way flight options from Fremont to San Diego. Find affordable one-way fares based on user searches. Data last updated March 26, 2026.
Search for one-way flight options from Fremont to San Diego. Find affordable one-way fares based on user searches. Data last updated March 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/282:47 pm
SFO
- SAN
1 stop22h 30m
Frontier
Deal found 3/23![Frontier logo]()
$61
This Southwest deal was found by Cheapflights users on 3/23. 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.
Tue 4/146:20 am
SFO
- SAN
2 stops11h 25m
Southwest
Deal found 3/23![Southwest logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1410:06 pm
SFO
- SAN
Nonstop1h 43m
Frontier
Deal found 3/23![Frontier logo]()
$63
This Southwest deal was found by Cheapflights users on 3/26. 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 6/83:45 pm
SFO
- SAN
1 stop3h 35m
Southwest
Deal found 3/26![Southwest logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:35 pm
SFO
- SAN
1 stop16h 42m
Frontier
Deal found 3/25![Frontier logo]()
$65
This Southwest deal was found by Cheapflights users on 3/25. 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 4/185:40 am
SFO
- SAN
1 stop8h 45m
Southwest
Deal found 3/25![Southwest logo]()
$69
This Expedia deal was found by Cheapflights users on 3/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:35 am
SFO
- SAN
1 stop6h 17m
Frontier
Deal found 3/24![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1910:06 pm
SFO
- SAN
Nonstop1h 43m
Frontier
Deal found 3/23![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1110:06 pm
SFO
- SAN
Nonstop1h 43m
Frontier
Deal found 3/22![Frontier logo]()
$73
This Southwest deal was found by Cheapflights users on 3/25. 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.
Thu 4/165:05 am
SFO
- SAN
1 stop7h 15m
Southwest
Deal found 3/25![Southwest logo]()
$74
This Super.com deal was found by Cheapflights users on 3/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:47 pm
SFO
- SAN
1 stop27h 05m
Frontier
Deal found 3/25![Frontier logo]()
$75
Find flight deals from Fremont to San Diego
Keep the following information in mind while searching for Fremont to San Diego flight deals. Data was last updated March 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $116 (Southwest) |
One-way from | $61 (Kiwi.com) |
Popular in | February |
Cheapest in | July |
Average price | $197 |
Cheapflights Fare Finder
Customize your flight search to find flights from Fremont to San Diego 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 March 26, 2026.
Use the filters below to find and compare flights from Fremont to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Wed 5/6
7:20 am-2:20 pm
2 stops7h 00m
San Diego
Sat 5/9
5:15 pm-6:55 pm
Nonstop1h 40m
$132
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Fri 4/24
6:00 am-9:24 am
1 stop3h 24m
San Diego
Mon 4/27
10:05 am-3:21 pm
1 stop5h 16m
$157
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sun 4/12
6:00 am-7:35 am
Nonstop1h 35m
San Diego
Tue 4/14
6:30 pm-11:15 pm
1 stop4h 45m
$157
Quickest round-trip
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Thu 4/16
10:10 am-11:45 am
Nonstop1h 35m
San Diego
Sat 4/18
7:15 am-11:50 am
1 stop4h 35m
$157
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sat 4/25
11:05 am-4:10 pm
1 stop5h 05m
San Diego
Mon 4/27
6:20 am-8:10 am
Nonstop1h 50m
$160
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Wed 4/15
8:55 am-1:45 pm
1 stop4h 50m
San Diego
Sat 4/18
7:15 am-11:50 am
1 stop4h 35m
$162
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Tue 4/21
9:07 pm-7:16 am
1 stop10h 09m
San Diego
Tue 4/28
11:05 am-12:48 pm
Nonstop1h 43m
$182
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Fri 5/8
11:10 am-6:00 pm
1 stop6h 50m
San Diego
Sat 5/9
8:35 am-5:25 pm
2 stops8h 50m
$202
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sun 5/24
6:05 am-7:40 am
Nonstop1h 35m
San Diego
Sun 5/24
2:40 pm-9:40 pm
2 stops7h 00m
$237
San FranciscoSan Diego
SFO - SAN
SFOSAN
San Francisco
Sun 4/19
6:00 am-9:24 am
1 stop3h 24m
San Diego
Wed 4/22
6:20 am-9:50 am
1 stop3h 30m
$238
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Fremont to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Fremont with our price prediction graph.
SFO-SAN
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 Fremont to San Diego
FR8-SAN
SFO-SAN
How far ahead should I book a flight from Fremont to San Diego?
Use this chart to determine the optimal time to book a round-trip flight from Fremont to San Diego. Price data was last updated on March 13, 2026.
Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from Fremont to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Fremont to San Diego?
Currently, May is the cheapest month in which you can book a flight from Fremont to San Diego (average of $33). Flying from Fremont to San Diego in February is currently the most expensive (average of $97). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from FR8 to SAN?
Find hourly flight availability from Fremont to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 26, 2026.
One of the essential ways to save on airfare from Fremont to San Diego is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 12% on airfare.
What is the cheapest day to fly from Fremont to San Diego?
Use this chart to determine the cheapest time to fly round-trip from Fremont to San Diego. Price data was last updated on March 23, 2026.
Travelers seeking maximum savings on their Fremont to San Diego flight should consider departing on Sunday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Fremont to San Diego
Explore weekly flight availability from Fremont to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 26, 2026.
The most flights from FR8 to SAN are scheduled on a Thursday (64 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).
How much does it cost to fly round-trip from Fremont to San Diego?
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated March 26, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andHawaiian Airlines from Fremont to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Fremont to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove
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Alternative routes for Fremont to San Diego
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Complete your trip
Complete your trip to San Diego by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Fremont to San Diego by cabin class
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Fremont and San Diego flights
Browse other Fremont and San Diego flight options. Last updated on March 26, 2026.
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Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 26, 2026.
Fremont to San Diego flights
Consider these flights traveling from Fremont to San Diego.
Top 9 airlines flying from Fremont to San Diego
Discover the top 9 airlines that operate flights from Fremont to San Diego. 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 March 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$36 | Average$126 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$37 | Average$120 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$38 | Average$157 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$53 | Average$216 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$57 | Average$207 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$58 | Average$159 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$77 | Average$224 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$88 | Average$193 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$177 | Average$335 | FlexibilityNo cancel fee | On-time71% |