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Historic London City to JFK business-class-only service.
British Airways BA1 flies the jet-stream exposed corridor from London to New York. Conditions change hour to hour — view the live forecast for your departure date.
View live forecastJet-stream exposure on this corridor is significant. Long mid-latitude legs mean clear-air turbulence is the dominant source of bumps, typically encountered at cruise altitude. Westbound aircraft typically fly against the prevailing winds, adding flight time. Captains often pick altitudes that avoid the strongest headwinds, which can also mean picking cleaner-air altitudes.
Calmest season: May–September. The North Atlantic track sees its strongest jet-stream activity from November through February, when winds commonly exceed 150 kt and clear-air turbulence is more frequent.
Full LCY to JFK route guideBritish Airways BA1 operates between LCY and JFK. Whether it’s bumpy depends on the day’s weather — Turbcast pulls live NOAA aviation-grade data so you can check the actual forecast for your departure date rather than relying on averages.
BA1 is typically operated by the A318. Aircraft swaps happen — confirm with your booking before flying.
Approximately 6h 59m direct, covering 5,572 km at a typical cruise of FL390.
Historically calmest during May–September. Forecast accuracy improves as you get closer to departure — within 48 hours the NOAA WAFS model is at peak skill.