SeattleSingaporeDirect FlightsSEA–SIN
Seattle (Seattle-Tacoma International Airport) to Singapore (Singapore Changi Airport).
Flight time from SEA to SIN is estimated at about 17h 13m, based on the 8,065-mile great-circle distance. Our current captured departure sample includes 1/day across 1 captured airline, with Singapore Airlines appearing most often in that sample. Captured departure times run from 10:15 to 10:15 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Captured freq. | Type |
|---|---|---|---|
| ~17h 13m Estimated from great-circle distance — no tracked flights yet. | 8,065 mi | 1/day From the current provider sample; confirm live timetables before booking. | International |
Airlines on this route
Captured airlines for SEA to SIN
Our current provider sample includes 1/day from SEA to SIN across 1 captured airline.
- First departure
- 10:15
- Last departure
- 10:15
- Captured departures/day
- 1
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Singapore Airlines | 1/day | Airbus A350 · Seat map | 10:15 |
Aircraft on this route
Flying the other way?
SIN to SEA flights — 1/day on 1 airline →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for SEA to SIN, last seen June 15, 2026. Frequency uses 5 scheduled departures across 5 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.
Route FAQ
How long is the flight from SEA to SIN?
The SEA to SIN flight time is estimated at about 17h 13m from great-circle distance until enough tracked flights are available.
How far is SEA from SIN?
SEA to SIN is about 8,065 miles by air.
Which airlines fly from SEA to SIN?
Our current provider sample for SEA to SIN includes Singapore Airlines. Confirm live timetables before booking.
What aircraft fly from SEA to SIN?
Aircraft captured in our current provider sample for SEA to SIN include Airbus A350.