I am planning a trip for my family of 4 to go to Ireland, England, Germany and Italy this summer. Below Summarizes my mileage: Miles needed 240000 US Airways Point Reduction -10000 Actual points needed 230000 My UA Miles 116768 AmEx points (soon to be Aeroplan miles) 97772 Husband UA Miles 17700 Total miles 232240 We both have a UA credit card which has the 5000 point reduction (so a total of 10,000 miles – am I making a correction assumption?) After a lot of searching, I found tickets on Air Canada ORD to DUB and then MIL to ORD return. Total miles needed 240,000. I want to pull the trigger asap, since economy tickets requiring only 30000 miles each way are very hard to find. I have never booked a trip using miles. I am little confused about the process. I know I can book two tickets with my miles. But, how do I go about booking the two additional seats with my husband’s miles and the planned transfer of AmEx miles to Aeroplan? Does he have enough mile to book the trip through US Airways? Or do I need to book the trip with Air Canada and then lose out on the 5000 points? Does Air Canada allow the combination of to programs miles for a trip? If I am totally off base with my plans, please let me know the best way to accomplish family vacation.