According to the dailymail, In June, July, August and September and over Christmas next year, passengers who are caught out at the airport with bags over the 10kg hand luggage allowance will be forced to pay £100 to check them in, up from the original fee of £40.
And even those who book online and confirm that they are checking in a bag will be charged £25, an increase of £5 per bag.
The charges apply to bags of up to 15kg that are being transported in the peak summer and winter months.
Those travelling with luggage that weighs up to 20kg - the average accepted baggage weight on most other airlines - will incur even higher fees.
Those who have confirmed they will check luggage during an online booking will be charged £35, while unlucky passengers caught out at the airport will have to pay £105 per bag.
As if the peak-time charges - which will hit traveling families the hardest - are not enough, the no-frills carrier will also charge passengers a £60 'boarding card reissue penalty' to those who have failed to print the document before arriving at the airport. The current fee is £40.
The check-in charges for luggage will apply to all bookings made from December 15. In the low season (October to May) the check-in fees for baggage will remain at £15.
The boarding card penalty will come into effect from January 15, 2012.
Ryanair spokesperson Stephen McNamara said: 'Over 70 per cent of Ryanair passengers will be unaffected by these changes as they already travel with no checked-in bags and instead use Ryanair’s free of charge 10kg carry on allowance.'
He also claimed that the high penalty for printing a boarding pass at the airport is a move 'to persuade the less than 10 passengers per day who fail to print or bring their boarding cards to their departure airport, to do so.'
The airline claims families will not be unfairly hit, saying that it is unlikely every member of a family will travel with their own suitcase.
But industry experts have accused Ryanair of cashing in on families who will have no option but to pay to check in bags when they are heading off on their annual summer holiday abroad.
Bob Atkinson, spokesperson for travelsupermaket.com, told MoneyMail: 'Ryanair is clearly hoping to profit from summer holidaymakers as it looks to raise bag charges for a 15kg pre-booked bag by 33 per cent from £20 to £25 for the peak holiday season, while leaving low season prices unchanged. This will affect families on their main summer holidays in particular.
'And woe betide you forgetting to book that bag online or turning up at the airport hoping to flout the rules. The same bag will now cost you £100, four times the cost of booking online. Failing to arrive with your boarding card will add an extra £60 to the cost, an increase of 50 per cent for the current £40 fine for failing to have this printed at home.'
Ryanair maintains it is giving passengers more choice about whether they travel with suitcases or not and claims passengers are not forced to pay for bags.
The airline takes credit for changing the way people travel, saying it is their choice whether to pay the extra charges in order to take more luggage or not.
Ryanair confirmed its aim is to reduce check in even further than it has already because renting the space at the airport costs money, as does handling checked luggage.
It claims that savings made from these cost-cutting measures will be passed onto passengers, saying that cuts have already been passed on, with passengers paying on average 50 per cent less than they do with rival easyJet.
However, a Mail on Sunday investigation into flight prices found that on a flight from London to Malaga, British Airways came out nearly £40 cheaper than easyJet and more than £50 cheaper than Ryanair by the time all the extra charges were added in by the budget carriers.
The latest price increases from Ryanair come just a week after the Government confirmed it would increase Air Passenger Duty in 2012, despite British travellers already paying on average eight times more flight tax than other European countries.
