We got a nonstop out of Denver on United for a very decent price. Some on the thread are considering flying into Seattle, which is really not Seattle; the airport is south of Seattle. We did consider this option but were leery about renting a car in US and driving it over, leaving it, driving back to Seattle for flight home, etc, etc. Seemed more hassle than it may be worth. So, since we have plenty of time to pay for the trip, built the cost of flight directly to and from Vancouver into the plans. We opted for not stressing about getting there/getting back and besides, we did get a fantastic price for a nonstop. Flying in the Friday before embarkation and flying back Monday after disembarkation. Gives us plenty of time to see beautiful Vancouver and have a stress-free, feel-free vacation!