Los Angeles (LAX) to Seattle / Tacoma (SEA) flight deal from $139 USD in economy class

UAUnited Airlines

Round Trip•Economy

LAX

Los Angeles International Airport

Los Angeles, United States

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$268 USD

-48%$139 USD

Verified Oct 30, 2025 at 11:46 PM

December 2025

Today

Mon

Tue

Wed

Thu

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Sat

Sun

1$254 2$177 3$167 4$167 5$167 6$157 7$228 8$167 9$163 10$157 11$186 12$200 13$220 14$245 15$210 16$200 17$177 18$225 19$279 20$251 21$297 22$220 23$294 24$168 25$168 26$296 27$295 28$320 29$230 30$210 31$210 1 2 3 4

Extremely Rare Availability

2% of dates checked are available within 10% of the lowest price

Tuesday, December 16th, 2025

10 round-trip options

Returning

Sun, Dec 21, 2025•5 Day Trip

$264 USD

Google Flights

Returning

Mon, Dec 22, 2025•6 Day Trip

$274 USD

Google Flights

Returning

Tue, Dec 23, 2025•7 Day Trip

$335 USD

Google Flights

Returning

Wed, Dec 24, 2025•8 Day Trip

$200 USD

Google Flights

Returning

Thu, Dec 25, 2025•9 Day Trip

$227 USD

Google Flights

Returning

Fri, Dec 26, 2025•10 Day Trip

$340 USD

Google Flights

Returning

Sat, Dec 27, 2025•11 Day Trip

$380 USD

Google Flights

Returning

Sun, Dec 28, 2025•12 Day Trip

$380 USD

Google Flights

Returning

Mon, Dec 29, 2025•13 Day Trip

$287 USD

Google Flights

Returning

Tue, Dec 30, 2025•14 Day Trip

$270 USD

Google Flights