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Seattle → London award seat availability
A free, live calendar of British Airways reward-flight (Avios) seat availability from Seattle (SEA) to London (LON) — every bookable date in the next year, updated within seconds of the airline's own data, with free instant alerts when new seats open.
256 dates have award seats right now (snapshot from 2026-11-06; the live calendar below updates continuously).
| Cabin | Dates with seats | Next available |
|---|---|---|
| Economy | 253 days | 2026-11-06 |
| Premium Economy | 239 days | 2026-11-08 |
| Business | 140 days | 2026-11-06 |
- Economy award seats have opened about 63 times a week on this route.
- Premium Economy award seats have opened about 55 times a week on this route.
- Business award seats have opened about 43 times a week on this route.
- First award seats have opened about 6 times a week on this route, and seats are usually snapped up within an hour.
Most award-seat openings so far have been for travel in October and May.
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