Seattle (SEA) — 253 Flight Routes & Destinations
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Hub Brief
Plan your next trip from Seattle
Seattle–Tacoma International Airport (SEA) connects to 253 destinations (191 domestic, 62 international) across 5 continents, served by 56 airlines including Alaska, Delta and Southwest. With 12,035 weekly departures, you have plenty of options for schedule flexibility.
Airlines from SEA
All airlines operating scheduled flights from Seattle–Tacoma International Airport.
How does SEA compare?
Alternative airports within 150 miles of Seattle–Tacoma International Airport.
| Metric | SEA | PAE | BLI | YYJ | YVR | PDX |
|---|---|---|---|---|---|---|
| Distance | — | 32 mi | 94 mi | 98 mi | 127 mi | 129 mi |
| Nonstop Routes | 253 | 67 | 34 | 57 | 287 | 240 |
| International | 62 | 16 | 5 | 32 | 196 | 38 |
| Airlines | 40 | 22 | 13 | 44 | 111 | 71 |
| Passengers/yr | 50.8M | 552K | 533K | 1.9M | 26.5M | 17.3M |
On-Time Performance
Seasonal & Recently Added Routes
Seasonal services and routes recently added to AIRO from SEA.
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Former nonstop destinations from SEA
Destinations that had nonstop service from SEA but don't appear in current schedules. Most remain reachable with a connection — open any route for the flights that used to operate and live options.
Routes by Distance
Distance breakdown of all routes from SEA.
Schedule Overview
Weekly flight schedule summary from SEA.
Seattle–Tacoma International Airport: Quick Facts
Comprehensive reference for SEA airport information.
Frequently Asked Questions
Common questions about flights from Seattle–Tacoma International Airport.
Seattle–Tacoma International Airport offers nonstop flights to 253 destinations, including 191 domestic and 62 international routes.
56 airlines operate scheduled service from Seattle–Tacoma International Airport, including major carriers like Alaska, Delta and Southwest. Use the airline filter above to see routes by specific carrier.
Yes, Seattle–Tacoma International Airport offers 62 international routes across 5 continents.
Yes. Beyond nonstop routes, the route explorer shows 1-stop and 2-stop connections, letting you reach hundreds of additional destinations via major hubs.
Nearby alternatives include PAE, BLI and YYJ. Check the Nearby Airports section above for route counts and distances.
Use the checkboxes in the route list to select routes, then click Compare to see side-by-side stats including frequency, duration, airlines, and on-time performance.
Check the Schedule Overview section for a day-by-day breakdown of route availability from Seattle–Tacoma International Airport.
Seattle–Tacoma International Airport handles approximately 50,829,184 passengers annually, ranking #34 worldwide.
Route data is updated regularly from official airline schedules. Seasonal or newly announced routes may take a few days to appear.
Click any route to see detailed flight options, then use the 'Search Flights' button to check availability and prices on Google Flights.