Best Flights starting from $183
from$183economy
San Diego (SAN)
Tue, Sep 8
Roundtrip
Seattle (SEA)
Wed, Sep 9
from$183economy
San Diego (SAN)
Wed, Sep 9
Roundtrip
Seattle (SEA)
Thu, Sep 10
from$183economy
San Diego (SAN)
Fri, Sep 11
Roundtrip
Seattle (SEA)
Sat, Sep 12
from$183economy
San Diego (SAN)
Mon, Sep 14
Roundtrip
Seattle (SEA)
Tue, Sep 15
from$210economy
San Diego (SAN)
Thu, Sep 10
Roundtrip
Seattle (SEA)
Fri, Sep 11
from$222economy
San Diego (SAN)
Sun, Sep 13
Roundtrip
Seattle (SEA)
Mon, Sep 14
from$243economy
San Diego (SAN)
Sat, Sep 12
Roundtrip
Seattle (SEA)
Sun, Sep 13
Fields updated — click View Prices to search ↑
Other Options for This Route
Other Destinations
San Diego (SAN) to Salt Lake City (SLC) in September from $179
From $179
San Diego (SAN) to Saint George (SGU) in September from $202
From $202
San Diego (SAN) to Detroit (DTW) in September from $387
From $387
San Diego (SAN) to Kailua-Kona (KOA) in September from $417
From $417
San Diego (SAN) to London (LHR) in September from $677
From $677
San Diego (SAN) to Manila (MNL) in September from $787
From $787
Flights from Other Cities
Los Angeles (LAX) to Seattle (SEA) in September from $154
From $154
Washington, D.C. (BWI) to Seattle (SEA) in September from $219
From $219
Las Vegas (LAS) to Seattle (SEA) in September from $223
From $223
Denver (DEN) to Seattle (SEA) in September from $231
From $231
Sacramento (SMF) to Seattle (SEA) in September from $249
From $249
Juneau (JNU) to Seattle (SEA) in September from $255
From $255
✈️ Flight Guide: San Diego (SAN) → Seattle (SEA)
Complete travel information for your September journey
Departing from San Diego (SAN) FAQs
To find the cheapest economy flights from Seattle-Tacoma International Airport (SEA), compare fares across aggregators like Google Flights, Skyscanner, and Kayak, set price alerts, and check low-cost carriers such as Alaska Airlines, Southwest, and Frontier. Be flexible with travel dates and consider midweek departures or red-eye flights to lower costs. Use fare calendars and book 4–8 weeks in advance for domestic travel and 2–5 months for international routes.
Affordable nonstop destinations from Seattle-Tacoma International Airport (SEA) often include Los Angeles, Las Vegas, Phoenix, Denver, and Vancouver (Canada). Seasonal promotions can also make routes to Orlando, Phoenix, and major hubs like Chicago inexpensive. Monitor airline flash sales and route-specific promos for the best economy fares.
July often sees higher demand for leisure routes, but you can still find deals during early July or by booking last-minute mid-month sales; look for weekday red-eye or early-morning flights to save. Sign up for airline newsletters and set alerts for SEA origin routes; use flexible date search tools to spot dips in the fare calendar and book quickly when prices drop.
SEA offers services that help budget travelers, including shuttle connections to nearby cities (Bellevue, Tacoma), consolidated ground transportation, and a range of on-site rental car and rideshare options that can be booked in advance. Use SEA's real-time parking and transit tools to reduce ground costs, and check airline-specific baggage policies to avoid checked baggage fees.
For domestic economy flights from Seattle-Tacoma International Airport (SEA), arrive at least 90 minutes before departure and check in online 24 hours in advance to secure better seat choices and save time. For international economy flights, arrive 2.5–3 hours early to clear security and customs. Always confirm recommended arrival times with your airline, especially during peak travel months like December and June.
Some airlines and booking platforms offer price-drop protection or allow you to rebook for a lower fare for a fee, while others do not for basic economy tickets. Check your airline’s fare rules and consider booking with credit cards or services that offer travel protections or rebooking credits to capture future fare drops.
Arriving at Seattle (SEA) FAQs
Cheapest economy fares, often labeled Basic Economy or ECON, usually include a seat in the main cabin with limited or no seat selection, strict baggage allowances, and restricted changes or refunds. These fares are the lowest upfront price but can incur additional fees for carry-on luggage, seat assignments, and changes—compare full economy and basic economy before booking.
For budget-minded travelers, arrival points like Los Angeles, Las Vegas, Phoenix, Denver, New York, and Chicago frequently show the lowest economy fares due to high competition and multiple low-cost carriers serving those airports. For Canadians or Northwest travelers, Vancouver (BC) and Portland can also provide competitive arrival pricing.
Review the fare conditions carefully and estimate total trip cost by adding checked and carry-on fees; sometimes a slightly higher fare that includes baggage is cheaper overall. Use credit card benefits for free checked bags if available and pack light to maximize savings on ECON fares.
In September, shoulder-season demand lowers prices on many routes—search for midweek arrivals and late-evening flights to capture lower economy fares. Use flexible date searches and set alerts for September windows to catch sudden drops tied to airlines reducing inventory.
Cheapest economy or ECON tickets typically come with no-change or high-change-fee policies and are nonrefundable. Some carriers allow same-day change for a fee or offer buy-up options at check-in; always verify refund/change rules before purchasing to avoid surprises.
1.0.2604.05
Events & Festivals — How SEA Flight Prices Respond to Major Events
Major events like the Seattle Seafair, Bumbershoot, SXSW (regional demand), tech conferences, and holiday travel seasons drive up flight prices from SEA. For economy travelers, book as early as possible for event dates and consider arriving a day before or after peak event days to save. Look into alternate nearby arrival cities and early-morning departures to avoid peak surcharges. CTA: Check event dates and compare ECON fares early to avoid inflated prices.
Best Time to Fly — Save on Economy Fares from SEA
The best time to fly from SEA to get cheap economy fares is during shoulder seasons—September through mid-November and January through early March—avoiding peak summer and major holiday weekends. For domestic routes, booking 1–2 months in advance often secures low fares; for international, aim for 2–5 months out. Tuesdays and Wednesdays typically have lower fares, while Fridays and Sundays trend higher. CTA: Use a fare calendar to find the best time to fly from Seattle and secure an ECON ticket.
Direct vs Connecting Flights — Choose Cheap Economy Options from SEA
Connecting flights often provide the lowest economy fares from SEA because low-cost carriers and competitive routing create price pressure at hubs. However, connections increase total travel time and risk of missed connections; if saving money is the priority, choose longer but cheaper connecting itineraries and allow adequate layover time. Nonstop flights cost more but offer convenience; compare the total door-to-door cost including time value and baggage fees. CTA: Compare nonstop and connecting ECON options from SEA to find the cheapest travel plan.
Airline Comparison — Best Budget Carriers Serving Seattle-Tacoma International Airport (SEA)
Alaska Airlines offers extensive West Coast coverage from SEA with frequent promotions and strong loyalty perks that can lower net costs. Southwest often provides competitive round-trip pricing and two free checked bags, useful for economy travelers. Delta and United provide broad networks with competitive fares to hubs, while ultra-low-cost carriers (e.g., Frontier, Spirit on select routes) may offer the absolute lowest headline price but add fees for bags and seat selection. Compare final out-the-door costs, including bags and seat fees, to determine the true cheapest option. CTA: Run a quick comparison for your SEA route and pick the airline with the best total ECON value.
Seasonal Travel Tips — Save on Economy Fares from SEA Year-Round
Winter (Jan–Feb): Look for off-peak and flash sales; book early for holiday periods. Spring (Mar–May): Use flexible-date searches to avoid spring-break spikes. Summer (Jun–Aug): Book 4–8 weeks ahead and consider midweek departures to get the cheapest economy seats. Fall (Sep–Nov): Take advantage of shoulder-season pricing with midweek travel. For all seasons, compare alternate airports (e.g., Tacoma, Portland, Vancouver BC) and check total trip cost including baggage and transfers. CTA: Use these seasonal tips to search for cheap economy flights from SEA now and set fare alerts for your travel month.
Flight Time & Schedules — SEA Departures and ECON Arrivals
Nonstop flight times from Seattle-Tacoma International Airport (SEA) vary by destination: to Los Angeles ~2.5–3 hours, to Las Vegas ~2.5 hours, to Denver ~3 hours, to New York ~5–6 hours. Cheapest economy flights often appear on off-peak schedules—early morning or late-night flights—and on routes with multiple daily frequencies. For long-haul or international ECON arrivals, expect one-stop itineraries with total travel time impacted by layovers; optimize multi-leg schedules by choosing shorter connection times that still meet minimum connection requirements. CTA: Check schedule grids for SEA origin flights and filter by departure time to find the cheapest economy options.
Cheap Flights — SEA to ECON Strategies & Deals
To find the cheapest flights from Seattle-Tacoma International Airport (SEA) in economy (ECON), combine flexible date searches, alternate nearby airports (Tacoma, Portland, Vancouver BC), and low-cost carriers. Use fare calendars and subscribe to price-drop alerts; book basic economy only if you can travel light to avoid baggage fees. CTA: Start a fare search for cheap flights from Seattle and compare ECON options now.