▁for ▁example : ▁▁ ▁The ▁dis ruption ▁had ▁a ▁significant ▁effect ▁on ▁schools ▁across ▁the ▁United ▁Kingdom ▁because ▁it ▁came ▁at ▁the ▁end ▁of ▁the ▁E aster ▁Hol id ays ▁and ▁many ▁pup ils ▁and ▁teachers ▁were ▁among ▁those ▁str and ed ▁abroad . ▁ ▁Swedish ▁and ▁Norwegian ▁char ter ▁tour ists ▁visit ing ▁Mall or ca , ▁Can ary ▁Islands , ▁Cy pr us , ▁or ▁Egypt ▁were ▁flow n ▁to ▁Barcelona ▁or ▁Ath ens ▁and ▁then ▁driven ▁back ▁to ▁Sweden ▁and ▁Norway ▁by ▁bus ▁( a ▁total ▁distance ▁of ▁ ≈ ▁from ▁Ath ens ▁to ▁Os lo ▁by ▁road ▁taking ▁two ▁and ▁a ▁half ▁days ▁without ▁a ▁break ). ▁ ▁Ar ound ▁ 6 0 0 ▁Mexican ▁middle - school ▁students , ▁r anging ▁from ▁ 1 2 ▁to ▁ 1 6 ▁years ▁old , ▁who ▁had ▁attended ▁a ▁competition ▁in ▁England ▁for ▁foreign ▁students ▁and ▁scheduled ▁to ▁return ▁home ▁on ▁ 1 8 ▁April ▁were ▁str and ed ▁for ▁almost ▁a ▁week . ▁Some ▁started ▁to ▁return ▁to ▁Mexico ▁on ▁ 2 1 ▁April ▁and ▁by ▁ 2 4 ▁April ▁most ▁of ▁them ▁were ▁already ▁home . ▁ ▁Str and ed ▁passengers ▁were ▁not ▁necessarily ▁given ▁priority ▁over ▁new ▁passengers ▁for ▁return ▁fl ights . ▁British ▁Air ways ▁told ▁passengers ▁in ▁India ▁and ▁China ▁that ▁any ▁free ▁seats ▁were ▁being ▁sold ▁on ▁the ▁open ▁market , ▁and ▁ad vised ▁them ▁to ▁buy ▁new ▁tick ets ▁and ▁seek ▁re imb urs ement ▁on ▁return . ▁ ▁In ▁addition ▁to ▁being ▁str