Flights Seattle → San Diego

One way · Economy · 1 adult · price per person · next 14 days from September 10, 2026

Last observed price on Aviasales for 7 of 15 dates; the lowest is $136. Prices are not guaranteed and are confirmed at booking time.

Last observed price by date

Date	Last observed price	Flight	Departure	Arrival	Stops
Thu, Sep 10	—	—	—	—	—
Fri, Sep 11	—	—	—	—	—
Sat, Sep 12	$312	Frontier Airlines F93406 (1st of 3 flights)	4:27 PM Sea-Tac (SEA)	6:19 PM (+2) San Diego (SAN)	2 stops · Denver International, San Francisco International
Sun, Sep 13	$355	Frontier Airlines F94204 (1st of 3 flights)	9:45 PM Sea-Tac (SEA)	6:19 PM (+2) San Diego (SAN)	2 stops · Las Vegas Harry Reid, San Francisco International
Mon, Sep 14	$151	Frontier Airlines F92408 (1st of 2 flights)	7:45 PM Sea-Tac (SEA)	4:59 PM (+1) San Diego (SAN)	1 stop · Las Vegas Harry Reid
Tue, Sep 15	—	—	—	—	—
Wed, Sep 16	—	—	—	—	—
Thu, Sep 17	$150	Frontier Airlines F93406 (1st of 2 flights)	4:27 PM Sea-Tac (SEA)	11:51 PM San Diego (SAN)	1 stop · Denver International
Fri, Sep 18	$142	Frontier Airlines F93406 (1st of 2 flights)	4:27 PM Sea-Tac (SEA)	11:51 PM San Diego (SAN)	1 stop · Denver International
Sat, Sep 19	—	—	—	—	—
Sun, Sep 20	—	—	—	—	—
Mon, Sep 21	$136lowest	Frontier Airlines F92408 (1st of 2 flights)	7:45 PM Sea-Tac (SEA)	4:59 PM (+1) San Diego (SAN)	1 stop · Las Vegas Harry Reid
Tue, Sep 22	—	—	—	—	—
Wed, Sep 23	$139	Alaska Airlines AS635	4:59 PM Sea-Tac (SEA)	7:54 PM San Diego (SAN)	Direct
Thu, Sep 24	—	—	—	—	—

Price not guaranteed: it is confirmed on Aviasales at booking time. How it works

Seattle, United States (SEA, city code)

Seattle-Tacoma (SEA).

San Diego, United States (SAN, city code)

San Diego International (SAN).

FromToDeparture date