Cheap flights from Boston to South San Diego from CA $102

View CA $102 flight on Wed, May 28, 2025Opens in a new window

Popular airlines from Boston to South San Diego

  • Air Canada

    Air Canada

  • WestJet

    WestJet

  • Flair Airlines

    Flair Airlines

  • American Airlines

    American Airlines

  • United

    United

  • Delta

    Delta

  • Porter Airlines

    Porter Airlines

  • 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 30% 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 (BOS) to South San Diego (SAN)

Prices were available within the past 7 days and start at CA $102 for one-way flights and CA $216 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Wed., May 28 - Tue., Jun. 3
BOS
Boston
SAN
San Diego
CA $216 Roundtrip, found 3 hours ago
CA $216
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Wed., May 28 from Boston to San Diego, returning Tue., Jun. 3, priced at CA $216 found 3 hours ago
Alaska Airlines
Wed., May 28 - Tue., Jun. 3
BOS
Boston
SAN
San Diego
CA $238 Roundtrip, found 3 hours ago
CA $238
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed., May 28 from Boston to San Diego, returning Tue., Jun. 3, priced at CA $238 found 3 hours ago
JetBlue Airways
Wed., May 28 - Tue., Jun. 3
BOS
Boston
SAN
San Diego
CA $240 Roundtrip, found 3 hours ago
CA $240
Roundtrip
found 3 hours ago
Select JetBlue Airways flight, departing Wed., May 28 from Boston to San Diego, returning Tue., Jun. 3, priced at CA $240 found 3 hours ago
Spirit Airlines
Wed., May 28 - Tue., Jun. 3
BOS
Boston
SAN
San Diego
CA $252 Roundtrip, found 3 hours ago
CA $252
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Wed., May 28 from Boston to San Diego, returning Tue., Jun. 3, priced at CA $252 found 3 hours ago
Spirit Airlines
Wed., May 28 - Tue., Jun. 3
BOS
Boston
SAN
San Diego
CA $266 Roundtrip, found 3 hours ago
CA $266
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Wed., May 28 from Boston to San Diego, returning Tue., Jun. 3, priced at CA $266 found 3 hours ago
Alaska Airlines
Wed., May 28 - Tue., Jun. 3
BOS
Boston
SAN
San Diego
CA $273 Roundtrip, found 3 hours ago
CA $273
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed., May 28 from Boston to San Diego, returning Tue., Jun. 3, priced at CA $273 found 3 hours ago
*Available to Expedia members.