You may have heard the saying, “When you fail to plan, you plan to fail.” This applies to many situations in life, including traveling. When it comes to successful travels, you need to toe the delicate line between planning carefully and being spontaneous and open to trying new things. Here are five things you should definitely book in advance and not leave up to chance:

Airport Parking

Parking at the airport can be notoriously expensive and difficult, especially if you are leaving on a long trip. Book your parking slot well in advance instead of leaving it up to chance and hoping you’ll find a good spot. ParkON allows you to reserve airport parking in just five minutes with their easy to use website, and they offer parking slots in more than 200 parking lots close to the busiest airports. With their easy to navigate interface, it only takes a few minutes to grab a guaranteed parking spot near your departure airport. All lots are close to the airport and include transportation to and from the airport.

ParkON guarantees the best prices, easy booking in less than five minutes, and free cancellations for when your travel plans change. The age old problem of airport parking is instantly resolved with this solution, so avoid the frustration of looking for parking and don’t risk running late and missing your flight. Book your slot in advance. After all, in only takes five minutes.

Flights

If your aim is to score the cheapest plane tickets for your trip, bear in mind that this isn’t an exact science. The price of airfare varies by season. Generally, you don’t want to book your flight too early or too late, and it is typically cheaper to travel on a Tuesday or Wednesday than it is on the weekend. When it comes to how far in advance you should book your tickets to get the price, this is where it gets a little more complicated.

CheapAir.com says that anywhere between three weeks and four months in advance of your travel dates is a safe window, but that’s obviously a pretty huge window. Narrow it down to no more than four weeks in advance, as you want to leave room in case your plans change.

Hotel Room

Don’t wait until you arrive at your destination to book a hotel room. You’ll most likely be tired after traveling and want to rest and relax, or maybe unpack if you’re that type of person. If you leave it up to chance, you risk not finding any available rooms within your budget, or getting stuck with a room that doesn’t suit your preferences. This is especially true if you travel during peak seasons or during holidays; hotels can fill up fast, and you may end up at a hotel that is outside your price range because the more affordable ones were already fully booked.

Tours

Many tours have limited slots, so it’s wise to book in advance and secure a good slot on a tour you’re really looking forward to. Some people prefer not to have an itinerary when they travel, and just go where the moment takes them, but if you’re only going to be in town for a few days and want to see as many sights as possible, organized tours are a great way to hit multiple attractions in one go. They can be tiring, so don’t go if you just want to hang out and relax, or if you don’t want to adjust to a bunch of other fellow tourists.

Train Tickets

In some countries, it’s wise to purchase train tickets online. It saves you time, money and hassle. When traveling to a country where trains are the main mode of transportation, be sure to do your research and find out it if it’s encouraged to book your tickets in advance, or if you can just purchase them when you get there.

These are just some of the things you should definitely consider planning in advance when you travel. It could save you a lot of time and money, and it would definitely minimize stress and frustration.