Cheap flights from Seattle to Carlsbad from CA $122

View CA $122 flight on Wed, Oct. 15, 2025Opens in a new window

Popular airlines from Seattle to Carlsbad

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Cheap flights from Seattle (SEA) to Carlsbad (SAN)

Prices were available within the past 7 days and start at CA $122 for one-way flights and CA $213 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Sep. 27 - Tue, Sep. 30
SEA
Seattle
SAN
San Diego
CA $213 Roundtrip, found 3 days ago
CA $213
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Sep. 27 from Seattle to San Diego, returning Tue, Sep. 30, priced at CA $213 found 3 days ago
Alaska Airlines
Sat, Sep. 27 - Tue, Sep. 30
PAE
Seattle
SAN
San Diego
CA $213 Roundtrip, found 3 days ago
CA $213
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Sep. 27 from Seattle to San Diego, returning Tue, Sep. 30, priced at CA $213 found 3 days ago
Hawaiian Airlines
Sat, Sep. 27 - Wed, Oct. 1
PAE
Seattle
SAN
San Diego
CA $214 Roundtrip, found 3 days ago
CA $214
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Sat, Sep. 27 from Seattle to San Diego, returning Wed, Oct. 1, priced at CA $214 found 3 days ago
Delta
Tue, Sep. 16 - Sat, Sep. 20
SEA
Seattle
SAN
San Diego
CA $217 Roundtrip, found 1 day ago
CA $217
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Sep. 16 from Seattle to San Diego, returning Sat, Sep. 20, priced at CA $217 found 1 day ago
American Airlines
Sat, Nov. 8 - Sat, Nov. 15
SEA
Seattle
CLD
Carlsbad
CA $243 Roundtrip, found 1 day ago
CA $243
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Nov. 8 from Seattle to Carlsbad, returning Sat, Nov. 15, priced at CA $243 found 1 day ago
Spirit Airlines
Thu, Aug. 7 - Tue, Aug. 12
SEA
Seattle
SAN
San Diego
CA $308 Roundtrip, found 2 days ago
CA $308
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Thu, Aug. 7 from Seattle to San Diego, returning Tue, Aug. 12, priced at CA $308 found 2 days ago

Find the cheapest month to fly from Seattle (SEA) to San Diego (SAN)

November is typically the cheapest month to fly

From CA $112 - CA $343 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.