THERE ARE SOME BASIC RULES ON HOW TO BOOK A CHEAP FLIGHT
*you have to plan - low budget operators have a simple guideline and it is to have a full airplane. So they want to attract as many as passengers as possible and is is possible with selling first tickets very cheap (they have a loss on these tickets, but it is more important to have a full airplane, and in the same tame they have a very good advertisement). When they sell a "critical mass" of cheap ticket they start to have a rise in price of tickets. The price will go up as the time of flight is less. So the main thing is to have an early plan and to book a ticket as soon as possible.
*you have to spend some time to check the sites - there is a lot of low budget flight operators and almost all of them have web sites. They are fighting for passengers all the time so it is vise to check if there is some promotion with lower prices.
*you need to have a credit card - most of the low budget flight operators need to be competitive so they haven't got a lot of sales personnel. Instead they are using their web site for information's, but also for booking of tickets. If you want to book a ticket over a web site - you need to have a credit card.
*you have to spend some time to check the sites - there is a lot of low budget flight operators and almost all of them have web sites. They are fighting for passengers all the time so it is vise to check if there is some promotion with lower prices.
*you need to have a credit card - most of the low budget flight operators need to be competitive so they haven't got a lot of sales personnel. Instead they are using their web site for information's, but also for booking of tickets. If you want to book a ticket over a web site - you need to have a credit card.
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AND, THERE IS SOMETHING YOU HAVE TO KNOW
*there is not free food on the flight - usually there is food on the flight, but it is not calculated in the price of the ticket. You have to pay extra for this.
*you do not know where you will sit - usually the tickets are without seat number so you sit where you want. It is important to come earlier so you can choose your seat.
*you can not board if you have checked late - usually these operators are very strict with checking times and if you come late for even 1 minute - you will not be allowed to board.
*you are not allowed to take animals in the plane - you can't bring your dog, but do not leave him alone when you travel :).
*there are limitations to your baggage - there are some variations, but low budget operators usually have limitations regarding size and weight and the number of bags you can take into airplane for free. Usually it's limited to two bags (one for 20 pounds and another for 10) - so read this carefully
*these operators have contracts with smaller airports - smaller airports are usually do not well traffic connections (check it before you book a flight!)
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HOW CAN THESE OPERATORS AFFORD SO LOWER TICKET PRICES??
*they sell tickets online - they have low personnel cost cause customers do the buy over Internet
*they depart/arrive from/to small airports - small airports have lower taxes so the final ticket costs are lower.