Cheap flights from Los Angeles to Seattle
The cheapest round trip from Los Angeles to Seattle that travelers found recently is $155 with a carry-on: a $155 fare on Southwest, which usually includes a carry-on. It leaves Tue, Nov 10 and comes back Wed, Nov 11.
Live prices for Tue, Nov 10 to Wed, Nov 11
Cheapest trips travelers found recently
| Leave | Return | Airline | Airports | Stops | Fare | Carry-on (est.) | Total | Live prices |
|---|---|---|---|---|---|---|---|---|
| Tue, Nov 10 | Wed, Nov 11 | Southwest | LAX → SEA | 1 stop | $155 | Included | $155 | Live price |
| Fri, Jan 1 | Mon, Jan 4 | Southwest | LAX → SEA | 1 stop | $159 | Included | $159 | Live price |
| Sat, Nov 7 | Wed, Nov 11 | Frontier | LAX → SEA | Nonstop | $104 | +$110 | $214 | Live price |
| Thu, Nov 26 | Sat, Nov 28 | Alaska Airlines | LGB → SEA | 1 stop | $243 | Included | $243 | Live price |
| Tue, Dec 22 | Mon, Dec 28 | Alaska Airlines | LAX → SEA | 1 stop | $243 | Included | $243 | Live price |
| Fri, Nov 20 | Sun, Nov 22 | Frontier | LAX → SEA | Nonstop | $183 | +$110 | $293 | Live price |
| Sat, May 1 | Tue, May 4 | Alaska Airlines | LGB → SEA | Nonstop | $332 | Included | $332 | Live price |
| Tue, Jun 1 | Fri, Jun 4 | Alaska Airlines | LGB → SEA | Nonstop | $332 | Included | $332 | Live price |
| Fri, Oct 23 | Sun, Oct 25 | Frontier | LAX → SEA | Nonstop | $230 | +$110 | $340 | Live price |
| Wed, Nov 25 | Sat, Nov 28 | Frontier | LAX → SEA | 1 stop | $243 | +$110 | $353 | Live price |
Round-trip prices per person, from real fares travelers found in the last few days. Carry-on fees are our estimate for each airline, both ways. Prices change fast: check the live price before you book.
Cheapest month to fly
| Month | Cheapest trip | From | Live prices |
|---|---|---|---|
| October 2026 | Fri, Oct 23 to Sun, Oct 25, 2 nights | $340 | Live price |
| November 2026 | Tue, Nov 10 to Wed, Nov 11, 1 night | $155 | Live price |
| December 2026 | Tue, Dec 22 to Mon, Dec 28, 6 nights | $243 | Live price |
| January 2027 | Fri, Jan 1 to Mon, Jan 4, 3 nights | $159 | Live price |
| April 2027 | Fri, Apr 2 to Sun, Apr 4, 2 nights | $386 | Live price |
| May 2027 | Sat, May 1 to Tue, May 4, 3 nights | $332 | Live price |
Bag fees on this route
What the airlines flying Los Angeles to Seattle usually charge for one bag each way. Budget airlines often sell the cheapest fares and charge the most for bags, so compare the total, not the fare.
| Airline | Carry-on, each way | Checked bag, each way |
|---|---|---|
| Alaska Airlines | Included | $40 |
| Frontier | $55 | $50 |
| Southwest | Included | $35 |
| United | Included | $40 |
Our estimates: fees depend on the fare type and when you pay. Check the airline's own price when you book.
How these prices work
These are real round-trip fares that travelers found on Aviasales recently, not a live search, so they can change or sell out. Dipt adds an estimate of each airline's carry-on fee, so a cheap fare with expensive bags doesn't look cheaper than it is. "Live price" opens Dipt's live flight search for those dates, where you book with the airline or travel site you pick. Dipt may earn a commission when you book, at no extra cost to you (how Dipt makes money).
Not sure where to go? Tell Dipt your budget and vibe and it finds the trip.
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