Searching multiple websites is the best way to get a great airfare deal. Fare Compare searches multiple sites and fare sources simultaneously so that you don't have too. This is why Fare Compare is our favourite place to search for cheap airfare. Prices for flights from Seattle to Los Angeles can be adjusted by airlines based on when you book your flight. According to data from all airlines, we have found that Saturdays, Tuesdays, Wednesdays, and Saturdays are the best days for booking flights. Read our article on the best times to book airline tickets.