# Southampton (SOU) to San Francisco (SFO) business class reward flights

Source: https://miles.zone/routes/sou-sfo
Data updated: 2026-10-20T18:34:41.973Z
Cash amounts are in US dollars.

Fewest points: 154,500 miles plus $795 on KLM through Air France-KLM Flying Blue, departing 2026-12-02.

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

| Airline | Program | Points | Cash on top | Routing | Departs | Checked |
| --- | --- | --- | --- | --- | --- | --- |
| Aer Lingus | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 85,000 Atmos points | $417 | via DUB, LAX | 2026-11-10 | 18 Oct 2026, 11:33 UTC |
| KLM | [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) (Standard fare) | 154,500 miles | $795 | via AMS, LAX | 2026-12-02 | 20 Oct 2026, 18:34 UTC |

## Route facts

Over the next 60 days we hold business class seats from Southampton to San Francisco 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 |
| --- | --- | --- | --- | --- |
| [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) | 60 of 60 | 80,000 miles | 203,500 miles | $781 to $827 |
| [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 49 of 60 | 85,000 Atmos points | 350,000 Atmos points | $402 to $417 |

No nonstop seats in the window.
With a connection on Aer Lingus and KLM.

## How to book it

1. [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) books on airfrance.fr: sign in there, search SOU to SFO in business class on a date with space, and pay in miles with the cash on top (from $781).
2. [Atmos Rewards](https://miles.zone/programs/atmos-rewards) books on alaskaair.com: sign in there, search SOU to SFO in business class on a date with space, and pay in Atmos points with the cash on top (from $402).

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

## More routes from Southampton

- [Algiers (ALG)](https://miles.zone/routes/sou-alg)
- [Amsterdam (AMS)](https://miles.zone/routes/sou-ams)
- [Paris (CDG)](https://miles.zone/routes/sou-cdg)
- [Oran (ORN)](https://miles.zone/routes/sou-orn)
- [Tunis (TUN)](https://miles.zone/routes/sou-tun)
- [Manama (BAH)](https://miles.zone/routes/sou-bah)
- [Boston (BOS)](https://miles.zone/routes/sou-bos)
- [Washington (IAD)](https://miles.zone/routes/sou-iad)
- [Tel Aviv (TLV)](https://miles.zone/routes/sou-tlv)
- [Beirut (BEY)](https://miles.zone/routes/sou-bey)
- [Chennai (MAA)](https://miles.zone/routes/sou-maa)
- [Colombo (CMB)](https://miles.zone/routes/sou-cmb)

## More routes to San Francisco

- [Madrid (MAD)](https://miles.zone/routes/mad-sfo)
- [Manchester (MAN)](https://miles.zone/routes/man-sfo)
- [Edinburgh (EDI)](https://miles.zone/routes/edi-sfo)
- [Barcelona (BCN)](https://miles.zone/routes/bcn-sfo)
- [Paris (CDG)](https://miles.zone/routes/cdg-sfo)
- [Dublin (DUB)](https://miles.zone/routes/dub-sfo)
- [London (LHR)](https://miles.zone/routes/lhr-sfo)
- [Doha (DOH)](https://miles.zone/routes/doh-sfo)
- [Seoul (ICN)](https://miles.zone/routes/icn-sfo)
- [Frankfurt (FRA)](https://miles.zone/routes/fra-sfo)
- [London (LGW)](https://miles.zone/routes/lgw-sfo)
- [Rome (FCO)](https://miles.zone/routes/fco-sfo)