( CNN ) -- Severe turbulence contributed to injuries aboard two flights that landed in Boston , authorities said Sunday . In the first incident , seven people were hurt aboard a JetBlue Airways flight from Puerto Rico to Boston , authorities said . Six of those hurt suffered back or neck injuries , said Boston 's Logan Airport spokesman Phil Orlandella . The other suffered from a severe coffee burn . Three of those injured refused medical attention , he added . The aircraft was an Airbus 320 model , flying from San Juan with 130 passengers and five crew members on board . Flight 852 landed in its intended destination of Boston around 10 p.m. , about 20 minutes ahead of schedule , according to the airline 's website . In the second incident , Lufthansa flight 429 headed from Charlotte , North Carolina , to Munich , Germany , was diverted to Boston with 11 reported injuries due to turbulence . Orlandella did not know the extent of the injuries . There were 245 passengers and 18 crew members on board . The plane later landed in Munich without incident , said Martin Riecken , a spokesman for Lufthansa . CNN 's Melanie Whitley contributed to this report .
One incident involves a JetBlue flight ; the other a Lufthansa flight . Two people are injured in the first incident . Eleven were reported hurt in the second flight .