# Singapore (SIN) to Seattle (SEA) business class award flights

Source: https://miles.zone/routes/sin-sea
Data updated: 2026-10-14T13:05:13.894Z
Cash amounts are in US dollars.

Fewest points: 85,000 Atmos points plus $104 on Philippine Airlines through Atmos Rewards, departing 2026-10-22.

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

| Airline | Program | Points | Cash on top | Routing | Departs | Checked |
| --- | --- | --- | --- | --- | --- | --- |
| Thai Airways | [LifeMiles](https://miles.zone/programs/lifemiles) | 90,000 miles | $55 | via BKK, TPE | 2026-10-23 | 12 Oct 2026, 13:16 UTC |
| Singapore Airlines | [LifeMiles](https://miles.zone/programs/lifemiles) | 90,000 miles | $58 | via FRA | 2026-10-26 | 12 Oct 2026, 13:18 UTC |
| United Airlines | [LifeMiles](https://miles.zone/programs/lifemiles) | 90,000 miles | $91 | via SFO | 2026-10-28 | 12 Oct 2026, 13:19 UTC |
| Japan Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 200,000 Atmos points | $102 | via NRT | 2026-10-22 | 14 Oct 2026, 13:05 UTC |
| Philippine Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 85,000 Atmos points | $104 | via MNL | 2026-10-22 | 14 Oct 2026, 13:05 UTC |
| Starlux Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 250,000 Atmos points | $113 | via TPE | 2026-10-22 | 14 Oct 2026, 13:05 UTC |
| British Airways | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 130,000 Atmos points | $1,080 | via LHR | 2026-11-04 | 14 Oct 2026, 11:12 UTC |

## Route facts

Over the next 60 days we hold business class seats from Singapore to Seattle on 34 of the 34 departure days we have checked so far (26 days are not checked yet), 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) | 34 of 34 checked | 85,000 Atmos points | 200,000 Atmos points | $102 to $1,080 |
| [LifeMiles](https://miles.zone/programs/lifemiles) | 6 of 34 checked | 90,000 miles | 90,000 miles | $55 to $58 |

No nonstop seats in the window.
With a connection on British Airways, Japan Airlines, Philippine Airlines, Singapore Airlines, Starlux Airlines, Thai Airways and United Airlines.

## How to book it

1. [Atmos Rewards](https://miles.zone/programs/atmos-rewards) books on alaskaair.com: sign in there, search SIN to SEA in business class on a date with space, and pay in Atmos points with the cash on top (from $102).
2. [LifeMiles](https://miles.zone/programs/lifemiles) books on lifemiles.com: sign in there, search SIN to SEA in business class on a date with space, and pay in miles with the cash on top (from $55).

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

## More routes from Singapore

- [Doha (DOH)](https://miles.zone/routes/sin-doh)
- [Toronto (YYZ)](https://miles.zone/routes/sin-yyz)
- [Edinburgh (EDI)](https://miles.zone/routes/sin-edi)
- [London (LGW)](https://miles.zone/routes/sin-lgw)
- [Manchester (MAN)](https://miles.zone/routes/sin-man)
- [London (LHR)](https://miles.zone/routes/sin-lhr)
- [Amsterdam (AMS)](https://miles.zone/routes/sin-ams)
- [Paris (CDG)](https://miles.zone/routes/sin-cdg)
- [Los Angeles (LAX)](https://miles.zone/routes/sin-lax)
- [New York (EWR)](https://miles.zone/routes/sin-ewr)
- [San Francisco (SFO)](https://miles.zone/routes/sin-sfo)
- [New York (JFK)](https://miles.zone/routes/sin-jfk)

## More routes to Seattle

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