It’s very hard to say straight away as it’s something that’s constantly being adjusted. Today we do not have an exact answer, but many people feel that Tuesday, Wednesday and Saturday are three days that are usually a little cheaper than, above all, Sundays and Mondays. However, we recommend that you always check some dates before and after your preliminary dates if the opportunity exists and you are flexible enough with your trip. Sometimes you can save thousands of dollars just switching to the day before.