Cheap flights from Carlsbad to Nantucket from CA $159

View CA $159 flight on Mon, Oct. 20, 2025Opens in a new window

Popular airlines from Carlsbad to Nantucket

  • 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 Carlsbad (SAN) to Nantucket (ACK)

Prices were available within the past 7 days and start at CA $159 for one-way flights and CA $324 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug. 16 - Sat, Aug. 23
SAN
San Diego
BOS
Boston
CA $324 Roundtrip, found 17 hours ago
CA $324
Roundtrip
found 17 hours ago
Select Delta flight, departing Sat, Aug. 16 from San Diego to Boston, returning Sat, Aug. 23, priced at CA $324 found 17 hours ago
Delta
Sat, Aug. 16 - Sat, Aug. 23
SAN
San Diego
BOS
Boston
CA $325 Roundtrip, found 17 hours ago
CA $325
Roundtrip
found 17 hours ago
Select Delta flight, departing Sat, Aug. 16 from San Diego to Boston, returning Sat, Aug. 23, priced at CA $325 found 17 hours ago
American Airlines
Wed, Aug. 20 - Wed, Sep. 17
SAN
San Diego
BOS
Boston
CA $337 Roundtrip, found 4 days ago
CA $337
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Aug. 20 from San Diego to Boston, returning Wed, Sep. 17, priced at CA $337 found 4 days ago
JetBlue Airways
Mon, Sep. 1 - Tue, Sep. 2
SAN
San Diego
BOS
Boston
CA $342 Roundtrip, found 6 days ago
CA $342
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Mon, Sep. 1 from San Diego to Boston, returning Tue, Sep. 2, priced at CA $342 found 6 days ago
Alaska Airlines
Thu, Sep. 4 - Sat, Sep. 6
SAN
San Diego
BOS
Boston
CA $350 Roundtrip, found 6 days ago
CA $350
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Sep. 4 from San Diego to Boston, returning Sat, Sep. 6, priced at CA $350 found 6 days ago
Hawaiian Airlines
Mon, Sep. 1 - Tue, Sep. 9
SAN
San Diego
BOS
Boston
CA $350 Roundtrip, found 6 days ago
CA $350
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Mon, Sep. 1 from San Diego to Boston, returning Tue, Sep. 9, priced at CA $350 found 6 days ago

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

August is typically the cheapest month to fly

From CA $154 - CA $378 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.