With the upcoming 100th Anniversary celebration at Fatima or for any other pilgrimages that you might be thinking of taking I want to be certain that you are aware of the site called www.skyscanner.com. It allows you to look for the least expensive airfares available. The feature which I like the best is that it allows you to search for the best priced airfare during a particular timeframe as opposed to most sites which want you to choose specifics dates to fly on. Even though you may want to be in Fatima on a specific day, for instance, this site could still prove useful to you if you are flexible about your actual travel days/the start and the end of your trip. I have used the site twice now and I have been very happy with it so far.