Submit feedbackSubmit feedbackComplete travel information for your September journey
September is an excellent month to fly from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA): demand eases after the summer peak and the Pacific Northwest begins to cool with early fall colors. Nonstop flights are frequent, especially with Alaska Airlines and Delta offering multiple daily departures; book 3–8 weeks in advance for the best fares. From LAX plan for terminal checks—Terminal 2, 4, 7, or the Tom Bradley International Terminal are common departure points—and use the FlyAway bus or rideshare to avoid parking stress. In Seattle, expect mild weather and fewer tourists than summer; sample local attractions like Pike Place Market, the Space Needle, Bainbridge Island ferry, and day trips to nearby Bellevue and Tacoma. Ready to find cheap flights from LAX to SEA this September? Search fares now and lock in a flexible ticket to save.
For a domestic flight from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA) in September, arrive 90 minutes to 2 hours before departure if you have carry-on only and 2 to 3 hours if you need to check bags. September sees moderate passenger volumes with some holiday and business travel spikes, so allow extra time for security lines, ride-share pick-up zones, and luggage drop. Check TSA wait times and airline check-in cutoffs the night before and consider TSA PreCheck to speed your airport experience.
Major carriers operate nonstop and connecting routes from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA), commonly from Terminal 2, Terminal 4, Terminal B (Tom Bradley International Terminal for some carriers), and Terminal 7 depending on the airline. Carriers with frequent LAX–SEA service include Alaska Airlines, Delta Air Lines, American Airlines, and Southwest; seasonal or codeshare options may use other terminals. Verify your departure terminal on your e-ticket and the airport website the day of travel to avoid last-minute terminal changes.
Yes, nonstop flights between Los Angeles International Airport (LAX) and Seattle-Tacoma International Airport (SEA) run multiple times daily in September, with peak morning and evening frequencies due to business travel demand. Alaska Airlines and Delta typically offer the most nonstop options, while Southwest and American Airlines also provide direct services. Book early for the best nonstop schedules and consider midweek departures for lower fares.
From downtown Los Angeles and surrounding areas, the most reliable options to reach Los Angeles International Airport (LAX) are rideshare services, airport shuttles, FlyAway bus service, and private car or taxi. In September, traffic can be lighter than summer but expect morning and evening congestion on the I-405 and I-105; plan extra travel time during rush hours. For lower cost and convenience, use the FlyAway bus from Union Station or prebook a shuttle if you have heavy luggage.
September is typically mild in Los Angeles, so departure delays from Los Angeles International Airport (LAX) due to local weather are uncommon; however, Seattle-Tacoma International Airport (SEA) may begin to see more marine layer and light rain as the Pacific Northwest transitions into fall. Always monitor your flight status and umbrella or light rain jacket for arrival in Seattle. Airlines may proactively update schedules for Pacific Northwest weather systems, so sign up for text alerts for real-time updates.
Los Angeles International Airport (LAX) offers economy and short-term parking, several airline and independent lounges, and plentiful ground transportation including shuttles, rental cars, and rideshare pickup in dedicated areas. In September, parking demand moderates after summer peaks but can still be busy during special events in Los Angeles, so reserve airport parking in advance for the best rates. Consider prepaid parking or taking the FlyAway bus to avoid parking hassles and use airline lounges to relax before boarding your flight to Seattle-Tacoma International Airport (SEA).
September offers comfortable weather and thinner crowds for arrivals at Seattle-Tacoma International Airport (SEA) from Los Angeles International Airport (LAX). Use Link Light Rail for a direct and budget-friendly ride to downtown Seattle, or take rideshare and shuttles to major nearby cities including Bellevue, Tacoma, and Everett. Expect pleasant days ideal for visiting Pike Place Market, the Space Needle, or nearby national parks—late-September may introduce occasional rain so pack a light waterproof layer. Book ground transportation ahead for the smoothest arrival experience and explore multi-day itineraries that include Bellevue shopping and Tacoma cultural sites.
Typical nonstop flight time from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA) is approximately 2 hours and 45 minutes to 3 hours. Flight time can vary slightly due to winds, routing, and air traffic, so factor in boarding and deplaning time when planning your arrival in Seattle. Use the flight status tool from your airline for exact gate arrival estimates and connections.
From Seattle-Tacoma International Airport (SEA), you can take Link Light Rail to downtown Seattle, regional buses to Bellevue and Tacoma, rideshare services, airport shuttles, or rental cars. In September, transit runs reliably and traffic is generally lighter compared to fall commute peaks, though always allow extra time for baggage claim and potential delays. For Bellevue, a direct taxi or rideshare is often fastest; for Tacoma, consider express shuttles or local Sound Transit options.
September in Seattle is typically mild and pleasant, with daytime highs in the mid-60s to low 70s (F) and cooler evenings. Early September often retains late-summer sunshine, while late September brings increased clouds and light showers; pack a light waterproof layer. Check local forecasts before traveling and plan outdoor activities—this is a great time for sightseeing with fewer summer crowds.
As of September travel norms, there are no special seasonal health restrictions unique to Seattle-Tacoma International Airport (SEA), but entry requirements may change based on federal or airline policies. Check your airline and CDC updates before departure for the latest health advisories, and carry documentation for vaccination or testing if required by connecting countries. For domestic travelers, standard ID and TSA rules apply—arrive early and monitor official sources.
To save on arrival costs at Seattle-Tacoma International Airport (SEA), book fare classes that include at least one checked bag or prepay baggage online to get lower rates. Use public transit like Link Light Rail to downtown Seattle for the best value, and compare rideshare pooling or shared shuttles to taxis for lower fares to Bellevue or Tacoma. Consider off-airport parking deals or combined rental car discounts if you plan to drive beyond the city.
In September, visitors arriving at Seattle-Tacoma International Airport (SEA) can enjoy Pike Place Market, the Space Needle, Chihuly Garden and Glass, and the ferry to Bainbridge Island for scenic views. Nearby cities such as Bellevue offer upscale dining and shopping, while Tacoma has the Museum of Glass and waterfront parks—both are easy day trips from SEA. With mild early-fall weather, plan outdoor exploration and book tours in advance to secure spots during the popular September travel window.
September in Seattle is full of festivals and events ideal for travelers from Los Angeles International Airport (LAX). Highlights often include the Seattle Wine & Food Experience, neighborhood street fairs, outdoor concerts, and the start of fall cultural programming at museums. Bellevue and Tacoma host art walks and harvest festivals that are short drives from Seattle-Tacoma International Airport (SEA). Because many events run on weekends, book flights and accommodations early and add local transit or rideshare reservations to your itinerary. Check official event pages as dates firm up each year and plan your September trip to align with the experiences you want most.
For September travel from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA), the best times to fly are midweek (Tuesday–Thursday) and early mornings. These windows typically offer lower fares, reduced airport crowds, and fewer weather-related delays when compared with weekend or holiday travel. Late-September can bring more flexible pricing—use flexible-date search to capture lower fares and consider red-eye or first-morning flights to maximize your time in Seattle. Book sooner rather than later for prime September travel dates to secure the best seats and prices.
Nonstop flights between Los Angeles International Airport (LAX) and Seattle-Tacoma International Airport (SEA) are typically the fastest and most convenient option, with about a 3-hour flight time. Connecting flights may be cheaper, especially with off-peak carriers or when using miles, but add time and potential for missed connections—use them if cost savings outweigh the added travel time. For September travel, prioritize nonstop flights for short trips or business travel; choose connecting itineraries for big savings if you have flexible schedules. Compare total door-to-door travel time when making your decision.
Alaska Airlines often leads on the Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA) route with multiple daily nonstops, strong regional service, and a popular loyalty program—good for repeat travelers. Delta provides robust schedule options and premium cabin choices, while Southwest may offer competitive pricing with two free checked bags but variable boarding policies. American Airlines has reliable connectivity and frequent partner options. For September travel, compare total price including baggage, preferred seats, and change fees; frequent flyers should weigh loyalty benefits and connections when choosing an airline. Book directly with your preferred carrier for customer service advantages and easier changes if needed.
Pack a light waterproof jacket and layers for September travel from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA), since mornings and evenings can be cool and late-September may bring occasional rain. Book early morning flights to maximize clear-weather travel and reduce chances of delays from afternoon air traffic. Use mobile boarding passes and real-time alerts from your airline to stay informed about gate changes or schedule adjustments. For cost savings, prepay baggage and select midweek departures; if you plan to visit Bellevue or Tacoma, reserve ground transport in advance to avoid peak local event surcharges.
Nonstop flights from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA) typically take between 2 hours 45 minutes and 3 hours. In September, airlines schedule multiple daily flights with higher frequencies in the early morning and late afternoon to serve business travelers; weekends may have slightly fewer nonstops but competitive fares. Check your airline’s published timetable for seasonal schedule adjustments, and remember that connecting flights through hubs (e.g., Denver or Salt Lake City) can add several hours to total travel time. Use live flight trackers and airline apps the day of travel for gate and status updates.
To score cheap flights from Los Angeles International Airport (LAX) to Seattle-Tacoma International Airport (SEA) in September, start searching 3–8 weeks in advance and use flexible date tools to compare midweek versus weekend fares. Sign up for airline newsletters and fare alerts from comparison sites to catch flash sales—Alaska Airlines and Southwest sometimes run targeted discounts on this route. Consider flying early morning or late evening departures to find lower prices and compare nearby airports (e.g., Long Beach or Burbank for departures) only if it adds convenience. Book refundable or changeable fares if your plans may shift, and use rewards or companion fares to further reduce costs. Search now to find the best September deals and set price alerts for fare drops.