20 ways to cut the cost of your holidayAs millions of Brits head off for their annual summer holidays, the cost of paying for all the extras on top of the booking price can mount up.
But there are ways to save money by doing a little planning ahead.
A Which? spokesman said: "Even little things like taking an empty plastic bottle with you when you go to the airport and filling it up after you have gone through the security checks can help - all those pounds soon add up."
Here is our essential holiday survival guide...
1. Book currency onlineAirport bureaux de change can be the worst possible places to change your money if you leave it to the last minute. However, you can make huge savings by simply pre-ordering your cash on www.travelex.co.uk or Thomas Cook's website www.thomascook.com/money for collection at the airport.
2. Take the slow trainThe Gatwick Express from London Victoria will set you back £16.90, but the Southern Trains service will cost you £11.90 when booked on the day, or as little as £5 if you book a day in advance. If travelling to Heathrow, you could spend as much as £18 for the single 15-minute journey to the airport from Paddington on the Heathrow Express. The journey on the slower Heathrow Connect train takes 26 minutes, but it costs just £7.90. The Tube will take much longer but at only £2.40 using Oyster off-peak from Zone 1, it's good value. If you do choose the express route, book online and check promotional codes. Or try a coach deal at www.nationalexpress.com
3. Grab a free drinkWhile you can't take more than 100ml of liquid through security, there is nothing to stop you from taking an empty bottle and filling it up from one of the drinking fountains in the departure lounge.
4. Book parking in advancePrice comparison websites such as www.gosimply.com, www.airport-parking-shop.co.uk and www.compare-airport-parking.co.uk will help you search for the best on and off-site parking deals at UK airports. Check rates But if you're travelling from a BAA airport, have a look at www.baa.com - they have a "best rate promise" and no credit card fees. BAA quoted £87 to pre-book two weeks parking online from mid-August at Heathrow's Long Stay Terminal Five. On the day it would have cost just under £220.
5. Skip the "speedy" boardingPriority boarding can be bought from some no-frills airlines whose seats are not allocated. This gets you through the gate first - although not always on to the plane if a bus takes you to it. If travelling with children under two on easyJet, you qualify for free "special assistance boarding" and you get to board the plane among the second group of passengers.
6. Use Ryanair to your advantageIf your main goal is just to get away and you are not really bothered where you end up, you could benefit from Ryanair's heavily discounted fares. Travel light, book early and pay with a pre-paid Mastercard. Fares are as little as £7 one way, before baggage fees and taxes
7. Get free health careThe European Health Insurance Card gives you free state-provided treatment in EU countries or Switzerland, Norway, Liechtenstein and Iceland. It's free to apply at www.ehic.org.uk
8. Always pay in local currencyIf you're using a card abroad, pay in local currency, rather than in sterling. This is generally cheaper as you'll be using your bank's own rate.
9. Try a cash dealIf you've booked accommodation separately from your flight, check whether paying by cash is cheaper. Which? investigators saved more than £20 a night at a hotel in Amsterdam.
10. Fee-free creditMost credit cards will charge a foreign exchange loading fee if you go shopping abroad. It is usually between two and three per cent of what you spend. The Post Office, Saga and Halifax all have credit cards with no charges on transactions. If you need to take out money abroad, opt for a pre-paid card. Check these out at www.which.co.uk/advice/prepaid-cards
11. Mobile phone chargesIf your network provider's international roaming charges are high, you can save money on calls from abroad by using an international calling card for the UK or using pay phones for local calls. Visit www.roamingadvisor.com to compare the costs of roaming with UK mobile networks
12. Online insuranceIf you take more than two holidays a year, you're probably better off with an annual travel insurance policy. If you do get single-trip cover, compare the prices of policies offered by travel agents, which are generally a fair bit more expensive compared with online. Covered2go have many of the more extensive covers and competitively price products on the web.
13. Check baggage in onlineChecking a bag into the hold used to be part of the price. But most no-frills airlines now charge for hold luggage. The cheapest way is to check your bag in online. Ryanair charges £10 per bag if you check in luggage online and £20 at the airport. EasyJet asks for £18 online and says it could double at the airport.
14. Buy lunch before you boardTake a packed lunch, or buy snacks and sandwiches at the airport to save cash. Boots offer a Meal Deal at airports. Get a sandwich, drink and snack for less than £4.
15. Don't over packRyanair charges £20 per kilo for excess baggage and easyJet £10 per kilo.
16. Check hand luggageDon't fall foul of restrictions on liquids. You may have to bin the toiletries, suntan lotions and alcohol in your hand luggage.
17. Bag a bargainMany airport shops have duty free prices as standard. For instance, at Monsoon a pair of sunglasses costing £14 on the High Street is £11.91. A maxi dress is £29.78, not £35.
18. Use available kids entertainmentThose travelling with Thomas Cook from Gatwick and Manchester can call on the Fun Squad who sing songs and perform magic tricks to entertain bored kids. Check out other airports' play areas.
19. Be a canny car hirerAlways take digital photos of the hire car when you pick it up - useful for defending claims of damage. Buy independent cover before you fly. See www.icarhireinsurance.com and www.insurance4carhire.com
20. Buy suncream at homeThis is cheaper in the UK than abroad. According to a Which? survey, Sainsbury's £4 Sun Protect Lotion and Asda's £3 Sun System compared with expensive brands.
All data correct as at 15th August 2010.