Alaska Airlines slipped past rival Hawaiian Airlines to post the best on-time rating for U.S. carriers in July. A total of 21 planes were stuck on the ground longer than federal rules allow — three hours for domestic flights, four for international. Research 18 cruise lines, 79 ships & 2283 Europe – Mediterranean cruises from $69/day with EXPERT CRUISE ADVICE, BEST DAILY RATES & Europe – Mediterranean’s best. JUNEAU, Alaska…