Seattle (SEA) → Sydney (SYD)
About Seattle to Sydney Flights
Discover the best flights from Seattle to Sydney, covering 12,472 km in approximately 16h 5m. Seattle (SEA) to Sydney (SYD) is one of the major long-haul routes connecting United States and Australia. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Seattle to Sydney.
12-Month Price History
Flight prices from Seattle to Sydney vary significantly throughout the year. February typically offers the best deals with average prices around $2180, while July sees the highest prices, averaging $3653. Savvy travelers can save up to 40% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
109 days
For best prices
Booking Tips
For the best prices on Seattle to Sydney flights, we recommend booking 124 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
United Airlines UA | $2960 | $11490 | $19590 |
Virgin Australia VA | $3050 | $11660 | $21120 |
Qantas QF | $3280 | $13160 | $20580 |
Jetstar Airways JQ | $3320 | $10440 | $20490 |
Delta Air Lines DL | $3500 | $13530 | $20950 |
Alaska Airlines AS | $3530 | $11910 | $20780 |
American Airlines AA | $3750 | $10810 | $17940 |
United Airlines
UA
Economy
$2960
Business
$11490
First
$19590
Virgin Australia
VA
Economy
$3050
Business
$11660
First
$21120
Qantas
QF
Economy
$3280
Business
$13160
First
$20580
Jetstar Airways
JQ
Economy
$3320
Business
$10440
First
$20490
Delta Air Lines
DL
Economy
$3500
Business
$13530
First
$20950
Alaska Airlines
AS
Economy
$3530
Business
$11910
First
$20780
American Airlines
AA
Economy
$3750
Business
$10810
First
$17940
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Don't Forget Travel Insurance!
Found your flight? Protect your trip with SafetyWing's comprehensive travel insurance. Perfect for trips to Sydney, Australia.
- Medical coverage up to $250,000
- Trip interruption & delays covered
- Lost luggage protection included
From just $45/month • Works in 180+ countries • COVID-19 coverage included
Trusted by 100,000+ travelers
Frequently Asked Questions
How long is the flight from Seattle to Sydney?
The flight time from Seattle (SEA) to Sydney (SYD) is approximately 16 hours and 5 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Seattle and Sydney?
The aerial distance between Seattle and Sydney is 12,472 kilometers (7,750 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Seattle to Sydney?
Several airlines operate flights between Seattle and Sydney, including Delta Air Lines, Alaska Airlines, Qantas and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Seattle to Sydney?
Based on historical data, February typically offers the lowest airfares for flights from Seattle to Sydney. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to Sydney?
For the best prices on Seattle to Sydney flights, we recommend booking 126 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Seattle to Sydney?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of United States traveling to Australia should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Seattle and Sydney?
Seattle operates on America/Los_Angeles time zone, while Sydney is in the Australia/Sydney time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.