All travelers come across a time in their travel planning when they need to schedule a transfer at a major airport. You glance at the arrival time of your inbound flight and all your connecting flight options. “Is 60 minutes enough time?” you ask yourself, suddenly wondering how far the gates will be from one another and if your flights will be on time.

As your travel counselor, we generally add in additional transfer time to your itinerary, giving you plenty of time to get your bags, go through customs (when necessary), change terminals, pass through additional security, navigate the vast airport and find your gate. While the extra time is not always needed, arriving a half-hour early at the gate is more enjoyable than missing your connection and scrambling to secure the next available flight.

Of course, we vary how much time we leave our clients to transfer based on several factors, such as the time of day your inbound flight is taking off and the airport you’re flying into. Simply put, some airports are easier to connect in than others.

The most challenging airports to arrange a transfer are typically the largest and busiest. Nothing ruins a successful transfer more than racing from one extremely long concourse to another, waiting for people-movers to load and unload, and dodging other travelers along the way.

Here’s a list of airports that often take the most time to make a transfer.

ATL: Hartsfield-Jackson Atlanta International Airport (Atlanta, Georgia) – Hartsfield is the world’s busiest airport. Any airport dealing with such a large volume experiences frequent delays and persistently crowded concourses.

ORD: O'Hare International Airport (Chicago, Illinois) – O’Hare used to be the nation’s busiest until 2005, when the government stepped in to reduce the total number of flights in order to decrease delays. Unfortunately O'Hare still accounts for more than a sixth of the nation's total flight cancellations, which doesn’t bode well for travelers trying to catch their connecting flight.

LHR: London Heathrow Airport (London, United Kingdom) – For seven straight years, Heathrow has hosted the largest number of internationally-bound passengers annually, making it the mixing bowl of European airports. Passengers connecting on another airline may need to change terminals and go through immigration twice.

HND: Tokyo International Airport (Tokyo, Japan) – Not only is HND (also known as Haneda Airport) one of the world's busiest domestic-only airports, but the local signage, printed predominantly in Japanese, is difficult to follow, making it an adventure for some travelers searching for a specific terminal.

JFK: John F. Kennedy International Airport (New York, New York) – With nine terminals, chances are you will need to board a bus or catch the light-rail train to transfer, which—depending on the crowds of inexperienced air passengers who are also trying to switch terminals—could be difficult.

You may be wondering which airports are the easiest to connect in. The top rated transfer airports include those in Denver (DEN), Detroit (DTW), Munich (MUC), Amsterdam (AMS) and Singapore (SIN).

Whether you need a car to drive from the airport to your seaside cabin, or you’re planning a road trip and don’t want to put the extra miles on the family sedan, then a rental car is in your future. What doesn’t have to be in your future is difficulty choosing the right rental. Here are four tips to ensure you end up behind the wheel of the best car possible.

Price is Nice – Many travelers view a rental car like their luggage: they know it’s necessary, but don’t want to fuss about it too much. If this describes you, then by all means shop by price and choose the smallest vehicle the car company has. Luck may be on your side since so many people shop by price and are aiming for the exact lowest-price vehicle as you, the company may be out of them when it’s time to grab your keys, forcing them to upgrade you to a roomier car at the same price.

Stick to the Big Boys – When renting, you may find a great price for a compact car through some low-budget, locally-owned company. Before committing, know that the rental will also come with low-budget, locally-owned service, which may steer you into a bad mood once you’ve dealt with it. In our experience, it’s wise to stick to the bigger, national brands like Hertz, who are best at getting people into theirs cars fast and helping out swiftly if things go wrong on the road. In the interest of full disclosure, our agency has an exclusive partnership with Hertz, which means we can often get you special rates you are unable to find on your own!

Indulge Yourself – No matter what type of vacation you’re on, remember that you’re on a vacation! That means you should be pampering yourself even if it’s just a little. When selecting a rental car, choose one with a little more room and luxury than you’re used to. There’s no faster way to get into a vacation frame of mind than driving away from the airport in a spacious, luxurious vehicle, blasting SIRIUS XM radio and using the car’s built-in navigation system.

Must Have Airport Location – There are very few deal-breakers when it comes to choosing a rental car company, but this is definitely one: it must have cars located at the airport. The last thing you want to do when your plane lands is take a cab or bus to an off-site rental company, which only adds an extra leg onto the journey. Choose one you can walk to, or at least has a direct shuttle bus service to an on-airport facility, thus saving you valuable time and hassles.

Look Out for Hidden Charges – Due to typical taxes and fees, the price of a rental car always exceeds the base price. However, there are non-typical fees to watch out for too, such as drop-off charges for one-way rentals and mandatory insurance on international rentals. To avoid these expensive surprises and more, turn to us to navigate your next rental car purchase.