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Los Angeles to Seattle — $154 USD roundtrip incl. all taxes & fees

$154 USD roundtrip from Los Angeles (LAX) to Seattle (SEA) on Frontier Airlines, non-stop each way.

That's 36% below the typical best price for this route (about $240 USD: the median of the cheapest fare in each of the 5 months we track), a saving of about $86 USD.

Dates found at this price

• Depart Fri Dec 4, 2026, return Sun Dec 6, 2026

How to book

1. Open the fare on Aviasales (affiliate link) and pick the same dates.
2. Check the final price at checkout before you pay; it is the one that counts.

Price found at Nov 10, 2026 at 12:55 AM ET from Aviasales fare data (last seen by travellers searching on Nov 7); price for 1 adult, economy, and may change or sell out at any time.

Fares shown include all mandatory taxes and fees (U.S. DOT full-fare rule). Prices and availability can change at any time; the price at checkout is the one that counts.

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