Philippine AirlinesDepart21:30
Wed, Nov 25SEA → SYD
23h 05m · 1 stop
$507one way, per person
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- Cheapest fare
- $507
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 18h 07m
Philippine Airlines · Wed, Nov 25
from $507
Usually 1+ stop
12,470 km
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Cheapest month to fly from Seattle to Sydney
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
See every date in November 2026 →
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Getting around
About flights from Seattle to Sydney
Seattle (SEA) and Sydney (SYD) are about 12,470 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 18h 07m. Over the next few months, one-way fares start from $507, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Seattle to Sydney?
The cheapest one-way fare we've seen recently is $507 with Philippine Airlines, departing Wednesday, November 25, 2026.
What is the cheapest month to fly from Seattle to Sydney?
November 2026 currently has the lowest fares, from $507 one way.
Are there direct flights from Seattle to Sydney?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Seattle to Sydney?
The quickest journey we've seen takes about 18h 07m. Seattle and Sydney are around 12,470 km apart.
Which airlines fly from Seattle to Sydney?
Recent fares on this route were with Philippine Airlines, American Airlines and United Airlines.
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