# Washington (IAD) to Southampton (SOU) business class award flights

Source: https://miles.zone/routes/iad-sou
Data updated: 2026-10-20T02:04:03.349Z
Cash amounts are in US dollars.

Fewest points: 45,000 Atmos points plus $29 on Aer Lingus through Atmos Rewards, departing 2026-11-01.

## 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) | 45,000 Atmos points | $29 | via DUB | 2026-11-01 | 20 Oct 2026, 02:04 UTC |
| KLM | [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) (Light fare) | 60,000 miles | $366 | via AMS | 2026-12-07 | 11 Oct 2026, 04:53 UTC |
| Delta Air Lines | [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) (Standard fare) | 178,500 miles | $370 | via JFK, AMS | 2026-12-01 | 11 Oct 2026, 04:52 UTC |
| Air France | [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) (Light fare) | 237,500 miles | $384 | via CDG, AMS | 2026-12-05 | 11 Oct 2026, 04:53 UTC |

## Route facts

Over the next 60 days we hold business class seats from Washington to Southampton on 56 of the 56 departure days we have checked so far (4 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) | 32 of 56 checked | 45,000 Atmos points | 45,000 Atmos points | $29 to $38 |
| [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) | 30 of 56 checked | 60,000 miles | 178,000 miles | $366 to $384 |

No nonstop seats in the window.
With a connection on Aer Lingus, Air France, Delta Air Lines and KLM.

## How to book it

1. [Atmos Rewards](https://miles.zone/programs/atmos-rewards) books on alaskaair.com: sign in there, search IAD to SOU in business class on a date with space, and pay in Atmos points with the cash on top (from $29).
2. [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) books on airfrance.fr: sign in there, search IAD to SOU in business class on a date with space, and pay in miles with the cash on top (from $366).

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

## More routes from Washington

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

## More routes to Southampton

- [Amsterdam (AMS)](https://miles.zone/routes/ams-sou)
- [Paris (CDG)](https://miles.zone/routes/cdg-sou)
- [Tunis (TUN)](https://miles.zone/routes/tun-sou)
- [Dammam (DMM)](https://miles.zone/routes/dmm-sou)
- [Boston (BOS)](https://miles.zone/routes/bos-sou)
- [Mexico City (MEX)](https://miles.zone/routes/mex-sou)
- [Denver (DEN)](https://miles.zone/routes/den-sou)
- [Casablanca (CMN)](https://miles.zone/routes/cmn-sou)
- [Chennai (MAA)](https://miles.zone/routes/maa-sou)
- [Colombo (CMB)](https://miles.zone/routes/cmb-sou)
- [Cairo (CAI)](https://miles.zone/routes/cai-sou)
- [Miami (MIA)](https://miles.zone/routes/mia-sou)