Flights to San Diego Coast from Boston - ￥17,160

View ￥17,160 flight on Sat, Aug 23, 2025Opens in a new window

Popular airlines from Boston to San Diego Coast

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Boston to San Diego Coast (BOS-SAN)

Prices were available within the past 7 days and start at ￥17,160 for one-way flights and ￥34,200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 23 - Sat, Aug 30
BOS
Boston
SAN
San Diego
￥34,200 Roundtrip, found 6 days ago
￥34,200
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Aug 23 from Boston to San Diego, returning Sat, Aug 30, priced at ￥34,200 found 6 days ago
American Airlines
Wed, Aug 13 - Sat, Aug 16
BOS
Boston
SAN
San Diego
￥35,500 Roundtrip, found 4 days ago
￥35,500
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Aug 13 from Boston to San Diego, returning Sat, Aug 16, priced at ￥35,500 found 4 days ago
American Airlines
Sat, Aug 23 - Sat, Aug 30
BOS
Boston
SAN
San Diego
￥35,720 Roundtrip, found 6 days ago
￥35,720
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 23 from Boston to San Diego, returning Sat, Aug 30, priced at ￥35,720 found 6 days ago
American Airlines
Wed, Aug 13 - Sat, Aug 16
BOS
Boston
SAN
San Diego
￥36,250 Roundtrip, found 4 days ago
￥36,250
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Aug 13 from Boston to San Diego, returning Sat, Aug 16, priced at ￥36,250 found 4 days ago
American Airlines
Sat, Aug 23 - Sat, Aug 30
BOS
Boston
SAN
San Diego
￥36,470 Roundtrip, found 6 days ago
￥36,470
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 23 from Boston to San Diego, returning Sat, Aug 30, priced at ￥36,470 found 6 days ago
United
Sat, Aug 23 - Sat, Aug 30
BOS
Boston
SAN
San Diego
￥50,760 Roundtrip, found 6 days ago
￥50,760
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 23 from Boston to San Diego, returning Sat, Aug 30, priced at ￥50,760 found 6 days ago

Find the cheapest month to fly from Boston (BOS) to San Diego (SAN)

August is typically the cheapest month to fly

From ￥18,064 - ￥39,726 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.