Iberia and United Airlines also canceled flights that had been scheduled to arrive in San Salvador Sunday night . Chaparrastique announces the cancellation of thousands flights into and out of the country . San Salvador president says authorities do n't know if the volcano will erupt again . Chaparrastique sent a plume of gas and ash 3.1 miles high , environmental ministry says . Some flights to El Salvador 's , the capital , were redirected to other airports to avoid the ash .
Chaparrastique announces the cancellation of thousands flights into and out of the country . San Salvador president says authorities do n't know if the volcano will erupt again . Chaparrastique sent a plume of gas and ash 3.1 miles high , environmental ministry says . Some flights to El Salvador 's , the capital , were redirected to other airports to avoid the ash .