Cheap Flights from Boston to Carlsbad

Airlines that fly from Boston to Carlsbad

  • 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 15% 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 Carlsbad (BOS-SAN)

Prices were available within the past 7 days and start at €96 for one-way flights and €190 for return, for the period specified. Prices and availability are subject to change. Additional terms apply.
JetBlue Airways
Boston — San Diego
BOS - SAN with JetBlue Airways
Wed, 5 Mar
JetBlue Airways
San Diego — Boston
SAN - BOS with JetBlue Airways
Wed, 26 Mar
Found 6 days ago
From €190
Select flight from Boston to San Diego, departing on March 5 with JetBlue Airways, and returning from San Diego to Boston on March 26 with JetBlue Airways. Price from €190, Found 6 days ago.
Delta
Boston — San Diego
BOS - SAN with Delta
Tue, 4 Mar
Delta
San Diego — Boston
SAN - BOS with Delta
Tue, 25 Mar
Found 6 days ago
From €190
Select flight from Boston to San Diego, departing on March 4 with Delta, and returning from San Diego to Boston on March 25 with Delta. Price from €190, Found 6 days ago.
JetBlue Airways
Boston — San Diego
BOS - SAN with JetBlue Airways
Wed, 26 Feb
JetBlue Airways
San Diego — Boston
SAN - BOS with JetBlue Airways
Mon, 3 Mar
Found 5 days ago
From €208
Select flight from Boston to San Diego, departing on February 26 with JetBlue Airways, and returning from San Diego to Boston on March 3 with JetBlue Airways. Price from €208, Found 5 days ago.
Delta
Boston — San Diego
BOS - SAN with Delta
Wed, 26 Feb
Delta
San Diego — Boston
SAN - BOS with Delta
Mon, 3 Mar
Found 5 days ago
From €209
Select flight from Boston to San Diego, departing on February 26 with Delta, and returning from San Diego to Boston on March 3 with Delta. Price from €209, Found 5 days ago.
American Airlines
Boston — San Diego
BOS - SAN with American Airlines
Wed, 26 Feb
JetBlue Airways
San Diego — Boston
SAN - BOS with JetBlue Airways
Mon, 3 Mar
Found 5 days ago
From €218
Select flight from Boston to San Diego, departing on February 26 with American Airlines, and returning from San Diego to Boston on March 3 with JetBlue Airways. Price from €218, Found 5 days ago.
United
Boston — San Diego
BOS - SAN with United
Tue, 29 Apr
United
San Diego — Boston
SAN - BOS with United
Sat, 3 May
Found 2 days ago
From €343
Select flight from Boston to San Diego, departing on April 29 with United, and returning from San Diego to Boston on May 3 with United. Price from €343, Found 2 days ago.
*Available to Expedia members.