Los Angeles to Seattle flights
The cheapest round trip we found from Los Angeles to Seattle is $143 (Dec 5 – 8, Nonstop), 39% below the usual $233.
LAX to SEA · Round trip · Economy · Prices per person in USD · Price found (3 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $331 |
| December 2026 | $143 (cheapest month) |
| January 2027 | $203 |
| February 2027 | $226 |
| March 2027 | No fares found yet |
| April 2027 | $254 |
| May 2027 | No fares found yet |
| June 2027 | $240 |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 5 – 8 3 nights · leave Sat$143 −39% vs usual$143 −39% vs usual Book
Alaska Airlines Nonstop · 3h 00m -
Dec 8 – 10 2 nights · leave Tue$158 −32% vs usual$158 −32% vs usual Book
American Airlines Nonstop · 3h 08m -
Dec 4 – 6 2 nights · leave Fri$165 −29% vs usual$165 −29% vs usual Book
Frontier Airlines Nonstop · 3h 00m -
Jan 20 – 24, 2027 4 nights · leave Wed$203 −13% vs usual$203 −13% vs usual Book
Frontier Airlines 1 stop · 4h 05m
-
Dec 5 – 7 2 nights · leave Sat$204 −12% vs usual$204 −12% vs usual Book
Frontier Airlines 1 stop · 5h 42m
-
Jan 21 – 24, 2027 3 nights · leave Thu$219 −6% vs usual$219 −6% vs usual Book
Frontier Airlines 1 stop · 4h 06m
-
Jan 2 – 6, 2027 4 nights · leave Sat$294 +26% vs usual$294 +26% vs usual Book
Alaska Airlines Nonstop · 2h 58m
-
Nov 22 – 27 5 nights · leave Sun$331 +42% vs usual$331 +42% vs usual Book
American Airlines Nonstop · 3h 08m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in Seattle
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Airport transfer to Seattle
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Plan the rest of your trip
Seattle · Dec 5 – 8Partner links: we may earn a commission if you book, at no extra cost to you.
Good to know
More from Los Angeles
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Flights to Seattle from other cities
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- Ontario $176 −32%
Los Angeles to Seattle: questions
How much does a flight from Los Angeles to Seattle cost?
The cheapest round trip we have found right now is $143, leaving December 5 and returning December 8. The usual price on this route is about $233, so this fare is 39% less. Prices are per person, economy, in USD.
What is the cheapest month to fly from Los Angeles to Seattle?
December 2026, with round trips from $143. The most expensive month in our data is November (from $331). Based on the 6 months ahead we have prices for.
Are there nonstop flights from Los Angeles to Seattle?
Yes. Nonstop from $143 round trip. 67% of the 9 date combinations we track are nonstop.
Which airports do Los Angeles to Seattle flights use?
Los Angeles airports include Los Angeles International (LAX), Bob Hope – Hollywood Burbank (BUR) and John Wayne – Santa Ana (SNA). Seattle airports include Seattle-Tacoma International (SEA) and Boeing Field International (BFI). The prices on this page cover every airport in both cities (LAX and SEA are the city codes).
About this route
We track round-trip economy fares from Los Angeles (United States) to Seattle (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $143, departing December 5 and returning December 8 on a nonstop flight, about 39% below the usual $233. Right now we're following 9 upcoming date combinations on this route. The cheapest month to fly in our data is December, from $143. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.