# Seattle (SEA) to Sydney (SYD) business class award flights

Source: https://miles.zone/routes/sea-syd
Data updated: 2026-10-13T06:59:58.821Z
Cash amounts are in US dollars.

Fewest points: 85,000 Atmos points plus $60 on Alaska Airlines through Atmos Rewards, departing 2026-12-05.

## Every program and airline that can book it, next 60 days

| Airline | Program | Points | Cash on top | Routing | Departs | Checked |
| --- | --- | --- | --- | --- | --- | --- |
| United Airlines | [LifeMiles](https://miles.zone/programs/lifemiles) | 90,000 miles | $56 | via LAX | 2026-10-22 | 13 Oct 2026, 06:59 UTC |
| Alaska Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 85,000 Atmos points | $60 | via HNL | 2026-12-05 | 8 Oct 2026, 22:26 UTC |
| Air Canada | [LifeMiles](https://miles.zone/programs/lifemiles) | 90,000 miles | $90 | via YVR | 2026-11-13 | 12 Oct 2026, 20:21 UTC |

## Route facts

Over the next 60 days we hold business class seats from Seattle to Sydney on 60 of the 60 departure days, through 2 programs. These figures are counted from the seats stored for those dates, not from a price history; the typical day is the median of each day's cheapest seat.

| Program | Days with space | Lowest | Typical day | Cash on top |
| --- | --- | --- | --- | --- |
| [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 60 of 60 | 85,000 Atmos points | 250,000 Atmos points | $27 to $66 |
| [LifeMiles](https://miles.zone/programs/lifemiles) | 22 of 60 | 90,000 miles | 90,000 miles | $56 to $90 |

No nonstop seats in the window.
With a connection on Air Canada, Alaska Airlines and United Airlines.

## How to book it

1. [Atmos Rewards](https://miles.zone/programs/atmos-rewards) books on alaskaair.com: sign in there, search SEA to SYD in business class on a date with space, and pay in Atmos points with the cash on top (from $27).
2. [LifeMiles](https://miles.zone/programs/lifemiles) books on lifemiles.com: sign in there, search SEA to SYD in business class on a date with space, and pay in miles with the cash on top (from $56).

MilesZone finds the seat; it does not book it or take payment.

## More routes from Seattle

- [Paris (CDG)](https://miles.zone/routes/sea-cdg)
- [Dublin (DUB)](https://miles.zone/routes/sea-dub)
- [Edinburgh (EDI)](https://miles.zone/routes/sea-edi)
- [Frankfurt (FRA)](https://miles.zone/routes/sea-fra)
- [London (LHR)](https://miles.zone/routes/sea-lhr)
- [Manchester (MAN)](https://miles.zone/routes/sea-man)
- [Munich (MUC)](https://miles.zone/routes/sea-muc)
- [Amsterdam (AMS)](https://miles.zone/routes/sea-ams)
- [Barcelona (BCN)](https://miles.zone/routes/sea-bcn)
- [Rome (FCO)](https://miles.zone/routes/sea-fco)
- [Madrid (MAD)](https://miles.zone/routes/sea-mad)
- [Doha (DOH)](https://miles.zone/routes/sea-doh)

## More routes to Sydney

- [Munich (MUC)](https://miles.zone/routes/muc-syd)
- [Tokyo (NRT)](https://miles.zone/routes/nrt-syd)
- [Hong Kong (HKG)](https://miles.zone/routes/hkg-syd)
- [Tokyo (HND)](https://miles.zone/routes/hnd-syd)
- [Rome (FCO)](https://miles.zone/routes/fco-syd)
- [Frankfurt (FRA)](https://miles.zone/routes/fra-syd)
- [Bangkok (BKK)](https://miles.zone/routes/bkk-syd)
- [Los Angeles (LAX)](https://miles.zone/routes/lax-syd)
- [San Francisco (SFO)](https://miles.zone/routes/sfo-syd)
- [Vancouver (YVR)](https://miles.zone/routes/yvr-syd)
- [London (LHR)](https://miles.zone/routes/lhr-syd)
- [Dubai (DXB)](https://miles.zone/routes/dxb-syd)