Members who purchase a travel package from United Packages and provide a valid MileagePlus account number at the time of booking are eligible to earn miles. For full terms and conditions, visit packages.united.com.
Flights to San Diego from $ 77*
expand_more
1 Passenger, Economy
expand_morePromotion Code
expand_moreexpand_more
today
today
United's most popular flights to San Diego (SAN)
flight_takeoff
flight_land
$
San Francisco (SFO)to
San Diego (SAN)03/03/26 - 03/07/26
from
$ 77
Viewed: 14 hours ago
Roundtrip
Economy
Newark/New York (EWR)to
San Diego (SAN)03/07/26 - 03/11/26
from
$ 177
Viewed: 1 day ago
Roundtrip
Economy
Chicago (ORD)to
San Diego (SAN)02/18/26 - 02/25/26
from
$ 91
Viewed: 15 hours ago
Roundtrip
Economy
Denver (DEN)to
San Diego (SAN)02/03/26 - 02/06/26
from
$ 97
Viewed: 18 hours ago
Roundtrip
Economy
Washington, D.C. (IAD)to
San Diego (SAN)02/07/26 - 02/11/26
from
$ 217
Viewed: 12 hours ago
Roundtrip
Economy
Houston (IAH)to
San Diego (SAN)02/14/26 - 02/18/26
from
$ 163
Viewed: 17 hours ago
Roundtrip
Economy
Honolulu (HNL)to
San Diego (SAN)01/16/26 - 01/19/26
from
$ 221
Viewed: 17 hours ago
Roundtrip
Economy
Boston (BOS)to
San Diego (SAN)01/14/26 - 01/21/26
from
$ 237
Viewed: 19 hours ago
Roundtrip
Economy
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
Business class deals on flights to San Diego (SAN)
flight_takeoff
flight_land
$
San Francisco (SFO)to
San Diego (SAN)
02/06/26 - 02/08/26
Roundtrip
Business
from
$ 256
Viewed: 1 hour ago
Newark/New York (EWR)to
San Diego (SAN)
01/10/26 - 01/14/26
Roundtrip
Business
from
$ 1,117
Viewed: 1 day ago
Chicago (ORD)to
San Diego (SAN)
02/28/26 - 03/03/26
Roundtrip
Business
from
$ 642
Viewed: 1 day ago
Denver (DEN)to
San Diego (SAN)
01/27/26 - 02/01/26
Roundtrip
Business
from
$ 367
Viewed: 8 hours ago
Washington, D.C. (IAD)to
San Diego (SAN)
01/10/26 - 01/13/26
Roundtrip
Business
from
$ 977
Viewed: 4 hours ago
Houston (IAH)to
San Diego (SAN)
01/13/26 - 01/17/26
Roundtrip
Business
from
$ 623
Viewed: 6 hours ago
Honolulu (HNL)to
San Diego (SAN)
12/24/25 - 12/31/25
Roundtrip
Business
from
$ 1,285
Viewed: 1 day ago
Boston (BOS)to
San Diego (SAN)
01/11/26 - 01/13/26
Roundtrip
Business
from
$ 1,017
Viewed: 13 hours ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
Things to do after your flight to San Diego (SAN)
Fly to San Diego with United Airlines from over 200 airports within the United States and an additional 100 airports internationally.
San Diego’s top attractions
- Admire the architecture and landscapes at Balboa Park. The park is home to several attractions, including the San Diego Zoo, the Natural History Museum and the Desert Garden.
- Visit the Mission Basilica San Diego de Alcala, the first mission in California.
- Stroll through the Gaslamp Quarter.
- Take a boat ride around San Diego Bay.
- Grab a glimpse into the past at Old Town San Diego State Historic Park.
- Relax at Mission Beach, Coronado Beach or Ocean Beach.
- Go hiking at Torrey Pines State Natural Reserve.
Best time to travel to San Diego
Visit San Diego year-round for mild weather and plenty of events and activities. Winter is the best time to spot migrating whales off the coast, and spring is the perfect time to witness wildflowers in full bloom in the hills. Summer comes alive with many festivals, including the San Diego County Fair. You can visit San Diego or nearby cities when you fly to California on United.