Seattle (SEA) to Sydney (SYD)

Flight Distance & Air Miles

✈️ 7,750
miles
12,472
kilometers
6,734
nautical miles

🕐 15h 16m
Flight Time
🧭 SW (243°)
Direction
🌍 +18h
Time Difference

💳 Frequent Flyer Miles You'll Earn

Airline Base Miles Elite Total
🇺🇸
American Airlines
AAdvantage
7,750 12,400
Platinum
🔺
Delta Air Lines
SkyMiles
7,750 12,400
Gold Medallion
United Airlines
MileagePlus
7,750 11,625
Premier Gold
❤️
Southwest Airlines
Rapid Rewards
7,750 11,625
A-List Preferred
🏔️
Alaska Airlines
Mileage Plan
7,750 15,500
MVP Gold
🔵
JetBlue Airways
TrueBlue
7,750 11,625
Mosaic

* Elite bonus miles shown for mid-tier status. Actual miles earned depend on your fare class and elite status level.

Calculate Another Route

💡 Did You Know?

This long-haul flight covers 7,750 miles across 16 time zones. Most airlines offer meal service and in-flight entertainment on this route.

✈️ Flight Details

The SEA to SYD route connects Seattle, United States with Sydney, Australia. This long-haul flight covers 7,750 miles and typically uses wide-body aircraft like Boeing 777 or Airbus A350.

This international flight crosses from United States to Australia. Remember to check passport and visa requirements. The flight follows a SW bearing of 243° from Seattle. There is a 18 hour time difference between the airports.

🛫 About SEA

Seattle Tacoma International Airport

Seattle Tacoma International Airport (SEA) serves Seattle, United States.

🛬 About SYD

Sydney Kingsford Smith International Airport

Sydney Kingsford Smith International Airport (SYD) serves Sydney, Australia.

❓ Frequently Asked Questions

The flight distance from Seattle Tacoma International Airport to Sydney Kingsford Smith International Airport is 7,750 miles (12,472 kilometers). This is the great circle distance - the shortest path between the two airports.
Direct flights from SEA to SYD typically take around 15h 16m. Return flights may vary slightly due to prevailing winds.
You'll earn approximately 7,750 base miles on most airline loyalty programs. Elite status members earn bonus miles on top of this base amount.
Multiple airlines typically operate this route. Check with major carriers including American, Delta, United, and other airlines that serve these airports.