If you really want to find a cheap cruise or trip to Mexico, you may want to consider going during the low traffic season. For example, Cancun tends to be pretty vacant in September and October. Rates for just about everything drop considerably. However, there is another type of cost associated with travel during this time. You may not be paying as much, but you will have to compete with the weather. This is considered to be the high point in the area’s rainy season. You can always try to look ahead and see what the weather holds for the dates that you plan to travel, but it important to realize that you could have a completely different vacation experience than if you would have gone during the busy season.