# Seattle (SEA) to London (LHR) business class award flights

In business class from Seattle (SEA) to London (LHR), the best value is also the fewest miles: 70,000 Atmos points plus $26 on Alaska Airlines through Atmos Rewards (checked 3 Nov 2026).

Source: https://miles.zone/routes/sea-lhr
Data updated: 2026-11-03T07:43:03.133Z
Cash amounts are in US dollars.

Best value: 70,000 Atmos points plus $26 on Alaska Airlines through Atmos Rewards, departing 2026-11-05.

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

| Airline | Program | Points | Cash on top | Routing | Departs | Checked |
| --- | --- | --- | --- | --- | --- | --- |
| Alaska Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 70,000 Atmos points | $26 | via RDU | 2026-11-05 | 3 Nov 2026, 07:42 UTC |
| American Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 70,000 Atmos points | $26 | via DFW | 2026-11-09 | 3 Nov 2026, 07:43 UTC |
| Air Canada | [LifeMiles](https://miles.zone/programs/lifemiles) | 81,000 miles | $28 | via YVR | 2026-11-30 | 21 Oct 2026, 03:51 UTC |
| British Airways | [British Airways Club](https://miles.zone/programs/british-airways-club) | 99,000 Avios | Not quoted | Nonstop | 2026-11-03 | 27 Oct 2026, 12:41 UTC |
| Delta Air Lines | [Delta SkyMiles](https://miles.zone/programs/delta-skymiles) | 125,000 miles | $6 | Nonstop | 2026-12-29 | 3 Nov 2026, 02:15 UTC |
| Air France | [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) (Standard fare) | 124,500 miles | $354 | via CDG | 2026-11-17 | 3 Nov 2026, 02:06 UTC |

## Route facts

Over the next 60 days we hold business class seats from Seattle to London on 60 of the 60 departure days, 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 |
| --- | --- | --- | --- | --- |
| [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 58 of 60 | 70,000 Atmos points | 70,000 Atmos points | $6 to $1,574 |
| [LifeMiles](https://miles.zone/programs/lifemiles) | 1 of 60 | 81,000 miles | 81,000 miles | $28 |
| [British Airways Club](https://miles.zone/programs/british-airways-club) | 21 of 60 | 99,000 Avios | 99,000 Avios | Not quoted |
| [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) | 24 of 60 | 124,500 miles | 295,500 miles | $354 |
| [Delta SkyMiles](https://miles.zone/programs/delta-skymiles) | 60 of 60 | 125,000 miles | 385,000 miles | $6 to $35 |

Nonstop seats on Alaska Airlines, British Airways and Delta Air Lines.
With a connection on Air Canada, Air France and American Airlines.

## How to book it

1. [Atmos Rewards](https://miles.zone/programs/atmos-rewards) books on alaskaair.com: sign in there, search SEA to LHR in business class on a date with space, and pay in Atmos points with the cash on top (from $6).
2. [LifeMiles](https://miles.zone/programs/lifemiles) books on lifemiles.com: sign in there, search SEA to LHR in business class on a date with space, and pay in miles with the cash on top (from $28).
3. [British Airways Club](https://miles.zone/programs/british-airways-club) books on avios.com: sign in there, search SEA to LHR in business class on a date with space, and pay in Avios with the cash on top.
4. [Air France-KLM Flying Blue](https://miles.zone/programs/flying-blue) books on airfrance.fr: sign in there, search SEA to LHR in business class on a date with space, and pay in miles with the cash on top (from $354).
5. [Delta SkyMiles](https://miles.zone/programs/delta-skymiles) books on delta.com: sign in there, search SEA to LHR in business class on a date with space, and pay in miles with the cash on top (from $6).

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)
- [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)
- [Dubai (DXB)](https://miles.zone/routes/sea-dxb)

## More routes to London

- [Amsterdam (AMS)](https://miles.zone/routes/ams-lhr)
- [Barcelona (BCN)](https://miles.zone/routes/bcn-lhr)
- [Paris (CDG)](https://miles.zone/routes/cdg-lhr)
- [Dublin (DUB)](https://miles.zone/routes/dub-lhr)
- [Edinburgh (EDI)](https://miles.zone/routes/edi-lhr)
- [Rome (FCO)](https://miles.zone/routes/fco-lhr)
- [Frankfurt (FRA)](https://miles.zone/routes/fra-lhr)
- [Madrid (MAD)](https://miles.zone/routes/mad-lhr)
- [Manchester (MAN)](https://miles.zone/routes/man-lhr)
- [Munich (MUC)](https://miles.zone/routes/muc-lhr)
- [Zurich (ZRH)](https://miles.zone/routes/zrh-lhr)
- [Tel Aviv (TLV)](https://miles.zone/routes/tlv-lhr)