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.
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What actually flies SEA–SIN
US DOT T-100 · filed dataIn April 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 95% full.
Departures
42
April 2026
Seats
10,280
both directions
Passengers
9,804
both directions
Load factor
95.4%
passengers ÷ seats
Who flies SEA–SIN?
Singapore Airlines was the only carrier to fly nonstop SEA–SIN in April 2026 (42 departures).
- SQ
Singapore Airlines
42 departures · 10,280 seats
Share of departures100.0%95.4%
Load
What plane flies SEA–SIN?
In April 2026, the Airbus A350-900 flew 100% of SEA–SIN departures.
- Airbus A350-900
42 departures · 95.4% load
100.0%
How has SEA–SIN traffic changed?
Nonstop SEA–SIN departures rose from 38 in May 2025 to 42 in April 2026.
Monthly nonstop SEA–SIN traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
38 departures · 8,702 passengers
90.5%
Load
June 2025
35 departures · 9,951 passengers
99.7%
Load
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
By direction
The DOT files each direction separately — they rarely match.
SEA → SIN
90.7% full
21 departures · 4,664 passengers
SIN → SEA
100.0% full
21 departures · 5,140 passengers
Nonstop SEA–SIN traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
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 April 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.
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