Boston (BOS) to London (LHR) business class award flights
Cheapest right now55,000 milesPlus fees$486.20ProgramAtmos RewardsAirline
British AirwaysDepartingMon, Oct 5Verified 19 min ago
British AirwaysDepartingMon, Oct 5Verified 19 min agoWhich program and airline costs you least
Boston to London in business starts at 55K miles plus $486.20 — British Airways through Atmos Rewards. American Airlines charges the least cash — $5.60 — but wants 57.5K.
| Airline | |
|---|---|
| British AirwaysNonstopAtmos Rewards | 55Kplus $486.20 |
 American AirlinesNonstopAmerican AAdvantage | 57.5Kplus $5.60 |
 Finnairvia HELAmerican AAdvantage | 57.5Kplus $22.40 |
| British AirwaysNonstopAmerican AAdvantage | 57.5Kplus $486.20 |
| American AirlinesNonstopAtmos Rewards | 63Kplus $5.60 |
 Iberiavia MADAtmos Rewards | 63Kplus $148.00 |
| Finnairvia HELAtmos Rewards | 71.5Kplus $22.40 |
| Iberiavia MADAmerican AAdvantage | 75Kplus $148.00 |
Where the space is over the next 60 days
September
October
Get told the moment a BOS → LHR seat opens.
We re-check that exact seat seconds before the email leaves, so what you open is still there.
Email only. Searching this route stays free.