Cheap Flights to San Francisco from HK$276

If you're poorly prepared, travelling can be challenging. But there's no need to panic. Follow these tips and tricks for a comfortable start to your holiday in San Francisco. What to pack in your hand luggage:

• The secret to having an awesome travel experience is to plan ahead. So, let's start with the essentials: passport, travel docs, cash and vital medications. Next, take on board items that'll help while away those hours, like your laptop or a magazine. It's also a wise idea to pack your chargers, a comfy neck pillow and a pair of headphones. Last but not least, be sure to chuck in toiletry items like a toothbrush, lip balm and a spare set of clothes.

Do not pack the following items in your hand luggage:

• While the list of restricted items can differ between air carriers, the general guide to follow is nothing flammable, sharp or explosive. This includes screwdrivers, knives, fireworks and fuel. Sports equipment like golf clubs, and objects that could harm passengers, such as pepper spray and firearms, won't be allowed on board either.

What to wear on a flight:

• The aisles of a plane aren't the place for a fashion parade. Dress in comfortable layers and opt for shoes that are flat, roomy and easy to take on and off.
• Caused by lengthy periods of inactivity, deep vein thrombosis (DVT) is a blood clotting condition that can affect passengers during long-distance flights. Reduce the risks by drinking water, keeping your feet and legs moving and wearing compression socks or tights.

The secret is to be prepared before you get to security. That way, you'll be stepping onto that plane to San Francisco in the blink of an eye. Follow these tips and get your trip off to a flying start:

• Have your passport and boarding pass handy. They're the first things you'll be asked to show at security.
• The X-ray machine is up next. Remove anything metal on you that is likely to set off the scanner's alarm. This includes things like headphones or earphones, as well as heavy coats or jackets. They'll need to be placed on the conveyor belt for screening.
• For just a few minutes, you'll have to unplug from technology. Your phone, laptop and any other electronic devices must also be sent through the scanner.
• Remove gels and liquids from your hand luggage. They usually need to be sent through the X-ray machine separately. Each item should be no larger than 3.4 ounces (100 millilitres) and everything must fit inside a single quart-size (one litre), clear zip-close bag.
• Choosing your footwear wisely can save you a few precious minutes. Hiking boots are often required to be removed and separately scanned. Slip-on shoes are usually not.
• Airlines won't allow any pocket knives or other sharp items in your carry-on luggage. If you need to bring these kinds of items, pack them in your checked luggage.