Barcelona (BCN) to Boston (BOS) business class award flights
Air France-KLM Flying BlueLight fareAirline
KLMDepartingWed, Oct 28Which program and airline costs you least
Barcelona to Boston in business class starts at 70.5K miles plus $446.39 — KLM through Air France-KLM Flying Blue. Delta Air Lines through Delta SkyMiles charges the least cash — $48.36 — but wants 370K miles. British Airways Club asks fewer points, 50.3K Avios, but we do not read its cash, so it is not ranked first. British Airways adds taxes and carrier charges at booking: £499 on an off-peak London to New York Club World return since 27 May 2026. AwardWallet, May 2026.
| Airline | |
|---|---|
 Iberiavia MADBritish Airways Club | 50.3K AviosFees not quoted |
 Aer Lingusvia DUBBritish Airways Club | 56.5K AviosFees not quoted |
| KLMvia AMSAir France-KLM Flying Blue | 70.5Kplus $446.39 |
 Swissvia ZRH, IADlast seen 16 Oct, not re-checked sinceUnited MileagePlus | 88Kplus $61.79 |
 British Airwaysvia LHRBritish Airways Club | 110K AviosFees not quoted |
 United Airlinesvia ORDlast seen 16 Oct, not re-checked sinceUnited MileagePlus | 295Kplus $48.29 |
 Delta Air Linesvia JFK, DTWDelta SkyMiles | 370Kplus $48.36 |
 ITA Airwaysvia FCO, IADlast seen 16 Oct, not re-checked sinceUnited MileagePlus | 395Kplus $65.09 |
 Air Francevia CDGDelta SkyMiles | 395Kplus $68.93 |
| Air Francevia CDGAir France-KLM Flying Blue | 399.5Kplus $446.49 |
 SASvia CPHDelta SkyMiles | 450Kplus $59.27 |
| KLMvia AMSDelta SkyMiles | 450Kplus $68.82 |
Where the space is over the next 60 days
BCN to BOS in business class: the facts
Over the next 60 days we hold business class seats from Barcelona to Boston on 57 of the 57 departure days we have checked so far (3 days are not checked yet), through 4 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. Data updated .
- British Airways Club
- Days with space
- 30 of 57 checked
- Lowest
- 50,250 Avios
- Typical day
- 56,500 Avios
- Cash on top
- Not quoted
- Air France-KLM Flying Blue
- Days with space
- 1 of 57 checked
- Lowest
- 70,500 miles
- Typical day
- 70,500 miles
- Cash on top
- $446
- United MileagePlus
- Days with space
- 1 of 57 checked
- Lowest
- 88,000 miles
- Typical day
- 88,000 miles
- Cash on top
- $62
- Delta SkyMiles
- Days with space
- 56 of 57 checked
- Lowest
- 370,000 miles
- Typical day
- 495,000 miles
- Cash on top
- $43 to $1,083
Nonstop or with a connection
Nonstop seats on Delta Air Lines. With a connection on Aer Lingus, Air France, British Airways, Iberia, ITA Airways, KLM, SAS, Swiss and 1 other airline.
How to book it
- British Airways Club books on avios.com: sign in there, search BCN to BOS in business class on a date with space, and pay in Avios with the cash on top.
- Air France-KLM Flying Blue books on airfrance.fr: sign in there, search BCN to BOS in business class on a date with space, and pay in miles with the cash on top (from $446).
- United MileagePlus books on united.com: sign in there, search BCN to BOS in business class on a date with space, and pay in miles with the cash on top (from $62).
- Delta SkyMiles books on delta.com: sign in there, search BCN to BOS in business class on a date with space, and pay in miles with the cash on top (from $43).
MilesZone finds the seat; it does not book it or take payment.
More routes
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