Seattle / Tacoma (SEA) to Denver (DEN) flight deal from $45 USD in economy class – flightdeals.net

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Alaska Airlines, Inc.

ASAlaska Airlines, Inc.

One Way•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Denver International Airport

Denver, United States

$113 USD

-60%$45 USD

Verified Nov 16, 2025 at 9:41 PM

December 2025

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1$164 2$224 3$110 4$110 5$110 6$110 7$55 8$55 9$55 10$55 11$55 12$55 13$79 14$55 15$55 16$45 17$79 18$59 19$199 20$164 21$129 22$164 23$164 24$59 25$59 26$79 27$164 28$129 29$99 30$89 31$59 1 2 3 4

Extremely Rare Availability

1% of dates checked are available within 10% of the lowest price

Thursday, December 18th, 2025

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