AirHint found the following cheapest one-way flights from Seattle (SEA) to Los Angeles (LAX) in September 2026 (see full year).
One-Way flights
| 30 Sep | United | direct | |
| 01 Sep | Delta | direct | |
| 11 Sep | Delta | direct | |
| 12 Sep | Delta | direct | |
| 25 Sep | Delta | direct |
Also check the deals for return flights from Seattle to Los Angeles in September.
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