Cheap flights from Los Angeles to Seattle from $148 BUR, LAX, SNA → BFI, SEA

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $80 to $202.

At $213, the cheapest return found recently is above that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 7-night return fares leaving within 3 days of 11 Dec to compare.

Every date we hold

257 fares on 16 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $154.

Found recently, and the cheapest we hold

What have prices looked like?

Over 47 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $40 to $141.

At $148, the cheapest one-way found recently is above that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 17 Jul 2027 to compare.

Every date we hold

89 fares on 6 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $48.

Return

Fares 14 to 29 days before departure were typically 53% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 30 to 59 days before departure were typically 54% lower than 0 to 6 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (47 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Los Angeles to Seattle?

The cheapest return found recently is $213 with Alaska Airlines, 11 Dec to 18 Dec, found 2 days ago. The cheapest return we hold, of any age, is $154 with Frontier Airlines, 4 Dec to 7 Dec, found 7 days ago. The cheapest return fare on each of 16 departure dates is usually $224 to $257.

How much is a one-way flight from Los Angeles to Seattle?

The cheapest one-way found recently is $148 with Alaska Airlines, 17 Jul 2027, found 2 days ago. The cheapest one-way we hold, of any age, is $48 with Frontier Airlines, 11 Dec, found 7 days ago. The cheapest one-way fare on each of 6 departure dates is usually $98 to $115.

What is the cheapest month to fly from Los Angeles to Seattle?

December 2026 is the cheapest month for a return, from $154, 4 Dec to 7 Dec, found 7 days ago. It is the cheapest month for a one-way too, from $48, 11 Dec, found 7 days ago.

How far ahead should I book a flight from Los Angeles to Seattle?

In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 53% lower than 0 to 6 days before departure. In 47 days of prices between 24 Sept and 11 Nov, one-way fares 30 to 59 days before departure were typically 54% lower than 0 to 6 days before departure.

Is there a direct flight from Los Angeles to Seattle?

Yes, the cheapest nonstop return found recently is $213 with Alaska Airlines, 11 Dec to 18 Dec, found 2 days ago. The cheapest nonstop one-way found recently is $148 with Alaska Airlines, 17 Jul 2027, found 2 days ago.

How long is the flight from Los Angeles to Seattle?

The cheapest nonstop one-way found recently, with Alaska Airlines on 17 Jul 2027, takes 2 h 47 min from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA).

Which airlines have the cheapest flights from Los Angeles to Seattle?

Between 13 Nov and 11 Jun 2027, Alaska Airlines has the cheapest return on 8 of the 16 departure dates we hold, Frontier Airlines on 5 and United Airlines on 3. Between 11 Dec and 17 Jul 2027, Frontier Airlines has the cheapest one-way on 5 of the 6 departure dates we hold, and Alaska Airlines on 1.