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

Source: https://miles.zone/routes/sea-sin
Data updated: 2026-10-22T01:15:23.892Z
Cash amounts are in US dollars.

Fewest points: 130,000 Atmos points plus $1,303 on British Airways through Atmos Rewards, departing 2026-10-27.

## 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 | $6 | via LAX | 2026-10-26 | 10 Oct 2026, 02:52 UTC |
| United Airlines | [United MileagePlus](https://miles.zone/programs/united-mileageplus) | 238,700 miles | $6 | via LAX, SFO | 2026-11-16 | 18 Oct 2026, 16:31 UTC |
| EVA Air | [LifeMiles](https://miles.zone/programs/lifemiles) | 90,000 miles | $7 | via TPE, BKK | 2026-10-23 | 10 Oct 2026, 02:50 UTC |
| Alaska Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 200,000 Atmos points | $33 | via ICN | 2026-11-22 | 21 Oct 2026, 03:59 UTC |
| Starlux Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 250,000 Atmos points | $49 | via TPE | 2026-10-27 | 22 Oct 2026, 01:15 UTC |
| Qatar Airways | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 255,000 Atmos points | $63 | via DOH | 2026-11-08 | 21 Oct 2026, 03:58 UTC |
| Air France | [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) (Standard fare) | 448,500 miles | $699 | via CDG | 2026-11-17 | 21 Oct 2026, 14:59 UTC |
| British Airways | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 130,000 Atmos points | $1,303 | via LHR | 2026-10-27 | 22 Oct 2026, 01:15 UTC |
| British Airways | [British Airways Club](https://miles.zone/programs/british-airways-club) | 220,000 Avios | Not quoted | via LHR | 2026-11-09 | 20 Oct 2026, 20:18 UTC |

## Route facts

Over the next 60 days we hold business class seats from Seattle to Singapore on 42 of the 42 departure days we have checked so far (18 days are not checked yet), through 5 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 |
| --- | --- | --- | --- | --- |
| [LifeMiles](https://miles.zone/programs/lifemiles) | 3 of 42 checked | 90,000 miles | 90,000 miles | $6 to $7 |
| [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 41 of 42 checked | 130,000 Atmos points | 250,000 Atmos points | $33 to $1,303 |
| [British Airways Club](https://miles.zone/programs/british-airways-club) | 3 of 42 checked | 220,000 Avios | 220,000 Avios | Not quoted |
| [United MileagePlus](https://miles.zone/programs/united-mileageplus) | 7 of 42 checked | 238,700 miles | 360,000 miles | $6 to $21 |
| [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) | 3 of 42 checked | 448,500 miles | 700,000 miles | $699 |

No nonstop seats in the window.
With a connection on Air France, Alaska Airlines, British Airways, EVA Air, Qatar Airways, Starlux Airlines and United Airlines.

## How to book it

1. [LifeMiles](https://miles.zone/programs/lifemiles) books on lifemiles.com: sign in there, search SEA to SIN in business class on a date with space, and pay in miles with the cash on top (from $6).
2. [Atmos Rewards](https://miles.zone/programs/atmos-rewards) books on alaskaair.com: sign in there, search SEA to SIN in business class on a date with space, and pay in Atmos points with the cash on top (from $33).
3. [British Airways Club](https://miles.zone/programs/british-airways-club) books on avios.com: sign in there, search SEA to SIN in business class on a date with space, and pay in Avios with the cash on top.
4. [United MileagePlus](https://miles.zone/programs/united-mileageplus) books on united.com: sign in there, search SEA to SIN in business class on a date with space, and pay in miles with the cash on top (from $6).
5. [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) books on airfrance.fr: sign in there, search SEA to SIN in business class on a date with space, and pay in miles with the cash on top (from $699).

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 Singapore

- [Rome (FCO)](https://miles.zone/routes/fco-sin)
- [Munich (MUC)](https://miles.zone/routes/muc-sin)
- [Doha (DOH)](https://miles.zone/routes/doh-sin)
- [Toronto (YYZ)](https://miles.zone/routes/yyz-sin)
- [Edinburgh (EDI)](https://miles.zone/routes/edi-sin)
- [Manchester (MAN)](https://miles.zone/routes/man-sin)
- [Zurich (ZRH)](https://miles.zone/routes/zrh-sin)
- [London (LHR)](https://miles.zone/routes/lhr-sin)
- [Amsterdam (AMS)](https://miles.zone/routes/ams-sin)
- [Paris (CDG)](https://miles.zone/routes/cdg-sin)
- [Los Angeles (LAX)](https://miles.zone/routes/lax-sin)
- [San Francisco (SFO)](https://miles.zone/routes/sfo-sin)