Booking flights and cars
We think Kayak.com is the best site for flights research, now that travel.bing.com is gone (actually long gone).
Select “+-3 days” to see how one or two days could drastically change your flight costs. The basic rule is, flying Wednesday to Wednesday is usually the cheapest, with weekend flying being most expensive.
Select “Explorer” to see when the cheapest times are to fly. Mid-Feb thru mid May is the cheapest time to go to Hawaii (no surprise).
For rental cars we book Alamo thru Costco and then continue to scan prices, rebooking every time the rate drops. We have seen prices drop 2-3x this way. My other pro-tip is to book the cheapest car possible then upgrade onsite. Always cheaper than booking a higher grade in advance.
