Flights from Boston to Carlsbad

Cheapest flights from Boston

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 1 - Thu, Jul 3

BOS

Logan Intl.

SAN

San Diego Intl.

$307 Roundtrip, found 5 days ago

$307

Roundtrip

found 5 days ago

Select Hawaiian Airlines flight, departing Tue, Jul 1 from Logan Intl. to San Diego Intl., returning Thu, Jul 3, priced at $307 found 5 days ago

Mon, Jun 30 - Mon, Jul 7

BOS

Logan Intl.

SAN

San Diego Intl.

$307 Roundtrip, found 5 days ago

$307

Roundtrip

found 5 days ago

Select JetBlue Airways flight, departing Mon, Jun 30 from Logan Intl. to San Diego Intl., returning Mon, Jul 7, priced at $307 found 5 days ago

Sat, Jul 5 - Mon, Jul 7

BOS

Logan Intl.

SAN

San Diego Intl.

$317 Roundtrip, found 5 days ago

$317

Roundtrip

found 5 days ago

Select Delta flight, departing Sat, Jul 5 from Logan Intl. to San Diego Intl., returning Mon, Jul 7, priced at $317 found 5 days ago

Wed, Jul 9 - Fri, Jul 18

PVD

T.F. Green

SAN

San Diego Intl.

$342 Roundtrip, found 11 hours ago

$342

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Wed, Jul 9 from T.F. Green to San Diego Intl., returning Fri, Jul 18, priced at $342 found 11 hours ago

Fri, Jun 27 - Tue, Jul 1

BOS

Logan Intl.

SAN

San Diego Intl.

$352 Roundtrip, found 5 days ago

$352

Roundtrip

found 5 days ago

Select JetBlue Airways flight, departing Fri, Jun 27 from Logan Intl. to San Diego Intl., returning Tue, Jul 1, priced at $352 found 5 days ago

Sun, Jul 13 - Fri, Jul 18

PVD

T.F. Green

SAN

San Diego Intl.

$357 Roundtrip, found 11 hours ago

$357

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Sun, Jul 13 from T.F. Green to San Diego Intl., returning Fri, Jul 18, priced at $357 found 11 hours ago

Sat, Jul 12 - Fri, Jul 18

PVD

T.F. Green

SAN

San Diego Intl.

$367 Roundtrip, found 11 hours ago

$367

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Fri, Jul 18, priced at $367 found 11 hours ago

Sat, Jul 12 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$370 Roundtrip, found 11 hours ago

$370

Roundtrip

found 11 hours ago

Select United flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $370 found 11 hours ago

Sat, Jul 12 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$375 Roundtrip, found 11 hours ago

$375

Roundtrip

found 11 hours ago

Select United flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $375 found 11 hours ago

Sat, Jul 12 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$375 Roundtrip, found 11 hours ago

$375

Roundtrip

found 11 hours ago

Select American Airlines flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $375 found 11 hours ago

Fri, Jul 11 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$378 Roundtrip, found 11 hours ago

$378

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Fri, Jul 11 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $378 found 11 hours ago

Sat, Jul 12 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$385 Roundtrip, found 11 hours ago

$385

Roundtrip

found 11 hours ago

Select Breeze Airways flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $385 found 11 hours ago

Sat, Jul 12 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$390 Roundtrip, found 11 hours ago

$390

Roundtrip

found 11 hours ago

Select Breeze Airways flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $390 found 11 hours ago

Sun, Jul 13 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$393 Roundtrip, found 11 hours ago

$393

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Sun, Jul 13 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $393 found 11 hours ago

Sat, Jul 12 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$403 Roundtrip, found 11 hours ago

$403

Roundtrip

found 11 hours ago

Select United flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $403 found 11 hours ago

Sat, Jul 12 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$403 Roundtrip, found 11 hours ago

$403

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $403 found 11 hours ago

Mon, Jul 14 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$408 Roundtrip, found 11 hours ago

$408

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Mon, Jul 14 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $408 found 11 hours ago

Wed, Jul 9 - Sat, Jul 19

PVD

T.F. Green

SAN

San Diego Intl.

$411 Roundtrip, found 11 hours ago

$411

Roundtrip

found 11 hours ago

Select Delta flight, departing Wed, Jul 9 from T.F. Green to San Diego Intl., returning Sat, Jul 19, priced at $411 found 11 hours ago

Wed, Jul 9 - Tue, Jul 15

PVD

T.F. Green

SAN

San Diego Intl.

$412 Roundtrip, found 11 hours ago

$412

Roundtrip

found 11 hours ago

Select JetBlue Airways flight, departing Wed, Jul 9 from T.F. Green to San Diego Intl., returning Tue, Jul 15, priced at $412 found 11 hours ago

Sat, Jul 12 - Wed, Jul 16

PVD

T.F. Green

SAN

San Diego Intl.

$428 Roundtrip, found 11 hours ago

$428

Roundtrip

found 11 hours ago

Select Breeze Airways flight, departing Sat, Jul 12 from T.F. Green to San Diego Intl., returning Wed, Jul 16, priced at $428 found 11 hours ago