Seattle (SEA) to Singapore (SIN)
Flight time
≈ 16h 56m
Bearing
306° NW
Seattle (SEA) to Singapore (SIN) is 8,065 miles (12,979 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
Look up a route, or build a trip
Change the airports, or add stops for a multi-leg trip.
What actually flies SEA–SIN
Filed traffic dataIn June 2026, Singapore Airlines was the only carrier flying nonstop SEA–SIN; the Airbus A350-900 was the most common aircraft at 100% of departures; flights ran 99% full.
Departures
42
June 2026
Seats
9,885
both directions
Passengers
9,761
both directions
Load factor
98.8%
RPM ÷ ASM
Who flies SEA–SIN?
Singapore Airlines was the only carrier to fly nonstop SEA–SIN in June 2026 (42 departures).
- SQ
Singapore Airlines
42 departures · 9,885 seats
Share of departures100.0%98.8%
Load
What plane flies SEA–SIN?
In June 2026, the Airbus A350-900 flew 100% of SEA–SIN departures.
- Airbus A350-900
42 departures · 98.8% load
100.0%
How has SEA–SIN traffic changed?
Nonstop SEA–SIN departures fell from 44 in July 2025 to 42 in June 2026.
Monthly nonstop SEA–SIN traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
44 departures · 10,613 passengers
95.3%
Load
August 2025
38 departures · 9,304 passengers
96.8%
Load
September 2025
42 departures · 9,049 passengers
89.4%
Load
October 2025
44 departures · 9,480 passengers
85.2%
Load
November 2025
0 departures · 0 passengers
—
Load
December 2025
38 departures · 9,421 passengers
97.8%
Load
January 2026
46 departures · 10,104 passengers
98.4%
Load
February 2026
40 departures · 8,770 passengers
85.4%
Load
March 2026
44 departures · 10,704 passengers
99.6%
Load
April 2026
42 departures · 9,804 passengers
95.4%
Load
May 2026
46 departures · 10,526 passengers
97.1%
Load
June 2026
42 departures · 9,761 passengers
98.8%
Load
By direction
Each direction is filed separately — they rarely match.
SEA → SIN
98.6% full
21 departures · 5,005 passengers
SIN → SEA
98.9% full
21 departures · 4,756 passengers
Nonstop SEA–SIN traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
The airports
Singapore
SG
Singapore Changi Airport
Coordinates
1.35°N, 103.99°E
Hemisphere
N · E
Frequently asked
How far is Seattle (SEA) from Singapore (SIN)?
SEA to SIN is 8,065 miles (12,979 km / 7,008 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from SEA to SIN?
A nonstop covers the 8,065-mile great-circle distance in roughly 16h 56m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies SEA–SIN?
In June 2026, the Airbus A350-900 flew the largest share of departures (100.0%).
What mileage do I earn flying SEA–SIN?
Distance-based programs credit off the 8,065-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
Keep exploring
Every route below is its own page.
Other routes from SIN
Popular long-haul routes