question: planes normally charge some money if your check-in luggage is over weight, why do they charge extra even if my luggage is 26kg(let's say allowed is 23) and my gf has a 17 kg check in. Our combined is under 46 but it's still charged. is it just a scam to earn more money?
comment: Some airlines do allow a combined figure. Usually because angry customers will just open both cases and move stuff over. I think it depends on how much of a scumbag the company is. I would expect Ryanair to charge you.
passages: Supplementary fees are as follows:
  
  BULLET::::- Children that are 10 or under, a flat fee of €10 is charged no matter the journey.
  
  BULLET::::- Additional baggage (per piece) is €10 if booked at the time of booking, €20 on-line prior to travel, or €30 if purchased at the station immediately before travel.
   On 31 May 2008 the airline announced that passengers would be charged a fee for checked-in luggage. The fee was A$10 (for 15 kg of luggage) at booking or A$20 at check-in.
   The authorised (or certified) weight limits are chosen by the customer/airline and they are referred to as the "purchased weights". An operator may purchase a certified weight below the maximum design weights because many of the airport operating fees are based on the aircraft AFM maximum allowable weight values. An aircraft purchase price is, typically, a function of the certified weight purchased.
   Air Canada recommends the use of small collapsible umbrella type strollers with a collapsed diameter of maximum diameter of 25.5 cm (10 in) and maximum length of 92 cm (36 in) for free gate checking. Large strollers can only be checked in and will count as one piece of baggage. A car seat can be checked in for free. 
  
  British Airways allows free gate checking of one car seat and one fully collapsible stroller with maximum dimensions of 117 cm x 38 cm x 38 cm / 46in x 15 in x 15 in.
   Under the Weight Concept, each passenger is permitted to check in a total weight regardless of the number of suitcases. Often passengers traveling together can also combine their allowed weights. The total weight varies per airline and depends on the class, elite status, type of ticket, flight origin and destination.
  
  Section::::Fees.
   At the time of check-in, the passenger hands over baggage which is checked by the airport security and sealed. Anything that is above the weight limit or which is not allowed to be carried by the passenger himself to the aircraft cabin is usually handed over to the agent at the time of check-in. The baggage allowance, if any, is prescribed by the airline and anything in excess will warrant additional surcharges. 
  
  Section::::Baggage registration.:Self-service bag drop.
   Airlines have long charged fees for changing flights, and for excess luggage. However, with the oil price increases since 2003, many are increasing fees. In May 2008, it was announced that some would be charging even for just one checked bag, making it nearly impossible to avoid. Airlines have also invented fees for nearly every "service" that has always previously been included in the ticket price. While the extra income may be necessary to prevent bankruptcy, the practice of not including mandatory fees in the stated price is deceptive.
   For checked baggage, stored in the aircraft hold, usually the weight is the limiting factor. All checked items are generally weighed by the airline during check-in, and if they exceed the limit, the passenger is informed by the airline. To avoid any fees, the passenger often must switch some of the items found in the suitcase to another suitcase, or else carry it on.
   After being faced with increasing regulation of the types of surcharges that may be drip-priced, airlines have created new types of drip-priced surcharges. For example Spirit Airlines from August 2010 and Wizz Air from October 2012 started surcharging passengers who travel with conventionally-sized hand luggage. Following Ryanair's introduction of allocated seating in February 2014, it and other UK-based airlines have been accused of seating young children far away from their parents unless a surcharge is paid. This is despite the UK's Civil Aviation Authority guidelines stating that airlines' seat allocation procedures should aim to seat children close to their parents.
   Low-cost carriers such as Ryanair in Europe and AirAsia in Asia charge for checked baggage, whilst for full-service airlines the cost is included in the ticket price.
  
  Section::::Checked baggage on airlines.:Passenger-baggage reconciliation.
   Table 1: The table below provides a simple comparison of costs of a C1 check on a Boeing 737 NG aircraft between India and other international locations.
  
  Section::::MRO Association of India.
   Some airlines have a self-check-in process allowing passengers with bags to check-in at Self Bag Drop machines. Passengers then attach the baggage tag and drop the bag at the baggage drop belt. Passengers without checked luggage can go straight to the lounge (if entitled to lounge access) and check in at the kiosk there using their ePass (a small RFID device only for its premium customers) or proceed straight to the departure gate. Many airlines use electronic check-in such as ePass, mPass, or similar mobile apps, and these applications serve as the boarding pass.
  
  Section::::Seating registration.
   BULLET::::- Tickets can only be bought on-line through a dedicated website izy.com or mobile app, not from ticket machines, ticket counters or through the regular Thalys website. Tickets must be purchased at least four hours in advance of the journey and are either delivered by e-mail four days prior to travel, or via the mobile app as an e-ticket consisting of a QR code.
  
  BULLET::::- Similar to some low-cost airlines, whilst two pieces of luggage (maximum size, cabin baggage at 35 cm×55 cm×25 cm, and hand luggage at 27 cm×36 cm×15 cm ) is allowed free of charge, larger bags must be paid for.
   Ryanair charges passengers a fee which can amount to 60 Euros for "not" using online check-in, except in certain limited circumstances. Furthermore, by the start of 2010, all passengers were required to check in online, therefore abolishing the use of check-in desks. Despite this, passengers are still charged to print their boarding cards out.
  
  Online check-in is increasingly becoming required in other legacy carriers, particularly in Europe as the airport check-in desks are being relegated as baggage drop points only.
   Under the Piece Concept, passengers are permitted to check in a certain number of suitcases with a per-bag weight of up to 23 kilograms for Economy Class, and up to 32 kilograms for Business or First Class. The allowed weight per suitcase and the number of suitcases varies per airline and depends on the class, elite status, type of ticket, flight origin and destination.
  
  Section::::Standard concepts.:Weight Concept.
   Hi Fly is testing serving passengers with compostable materials in the food and drink service rather than single-use plastic. A flight in December 2018 was the first ever without disposable cups, silverware, and containers.
  
  On 29 June 2019 A Hi-Fly airlines, A340 returning to Orland Airport dumped its fuel on over 84% of the Airports Runway. The plane had been suffering hydraulic issues and was forced to return. It was not clear why the pilot dumped the fuel on the runway. 
  
  Section::::Destinations.
   As the subsequent investigation determined, when the aircraft attempted to depart, it was over its maximum take-off weight by and was carrying one excess passenger, according to its certification.
   As of May 2013, only Fiji's Airport Departure Tax, at F$150 (approximately US$85) and the three long-haul rates of the UK's Air Passenger Duty reduced rate at £67-£94 (or approximately US$105–143) for travel in lowest class or standard rate at £134-£188 (or approximately US$210–286) are higher departure taxes than Australia's.
  
  Ghana's Airport Passenger Service Charge, at GH₵200 (approximately US$100) has been reclassified as a charge, not a tax, after the government announced in March 2013 the charge would be 100% hypothecated towards funding airport infrastructure.
   Drip pricing of unavoidable additional charges on air fares is outlawed in the European Economic Area. Article 23 of Regulation (EC) No 1008/2008 requires that ""The final price to be paid shall at all times be indicated and shall include the applicable air fare or air rate as well as all applicable taxes, and charges, surcharges and fees which are unavoidable and foreseeable at the time of publication"". In the early 2010s, many budget airlines sought to circumvent this requirement by adding surcharges for the most common means of payment. For example, Ryanair surcharged £6 per passenger per flight segment to process a single debit card payment whose cost was only a few pence. Article 19 of Directive 2011/83/EU on Consumer Rights has limited such payment surcharges to ""the cost borne by the trader"" since 13 June 2014, but because of the prevalence of these surcharges, the United Kingdom enacted the legislation earlier than required with effect from 6 April 2013 under the Consumer Rights (Payment Surcharges) Regulations 2012. Later legislation under Article 62(4) of Directive (EU) 2015/2366 (Payment Services Directive) prohibits card surcharges throughout the EEA with effect from 13 January 2018, which the United Kingdom enacted under Regulation 6A(1) of the Consumer Rights (Payment Surcharges) Regulations 2012.
   The recommendations for checked baggage are: advised maximum weight 23 kg (50.71 lbs), weight limit 32 kg (70.55 lbs), advised maximum size 158 cm (62.2 in) length + width + height, limit 203 cm (nearly 80 in). The limit of 23 kg is present because of similar limits in health and safety regulations.
   In order to comply with special UK legislation, there are full security checks similar to those at airports, scanning both bags and people's pockets. Security checks at Eurostar are comparable to those at a small airport and generally much quicker than at London Heathrow. The recommended check-in time is 30 minutes except for business class where it is 10 minutes.
   Jetpoolers match flight terms and then enlists an agent to act on their behalf to secure lift for the trip. With jetpooling, flights are not previously booked, per se', rather they are booked once travelers agree on terms (from, to, date, time). No funds change hands amongst the travelers. Flight costs are collected by the agent that secures the jet.
   Check-in is usually the first procedure for a passenger when arriving at an airport, as airline regulations require passengers to check in by certain times prior to the departure of a flight. This duration spans from 15 minutes to 4 hours depending on the destination and airline (with self check in, this can be expanded to 24 hours, if checking in by online processes). During this process, the passenger has the ability to ask for special accommodations such as seating preferences, inquire about flight or destination information, accumulate frequent flyer program miles, or pay for upgrades. The required time is sometimes written in the reservation, sometimes written somewhere in websites, and sometimes only referred as "passengers should allow sufficient time for check-in". 
   Premium check-in areas vary among airlines and airports. The main airport in which an airline hub is located normally offers a more thorough and exclusive premium check-in experience, normally inside a separate check-in lounge. For example, Air New Zealand's Auckland International premium check-in lounge provides a dedicated customs clearance counter and direct shortcut access to the security checkpoints. Airlines operating in minor airports generally offer an exclusive and separate premium check-in queue lane, often combined for its first, business, and/or premium economy passengers.
   Typically, web-based check-in for airline travel is offered on the airline's website not earlier than 24 hours before a flight's scheduled departure or seven days for Internet Check-In Assistant. However, some airlines allow a longer time, such as Ryanair, which opens online check-in 30 and 4 days beforehand (depending on whether the passenger paid for a seat reservation), AirAsia, which opens it 14 days prior to departure, and easyJet, which opens as soon as a passenger is ticketed (however for easyJet, passengers are not checked-in automatically after ticketing, the passenger must click the relevant button). Depending on the airline, there can be benefits of better seating or upgrades to first class or business class offered to the first people to check in for a flight. In order to meet this demand, some sites have offered travelers the ability to request an airline check-in prior to the 24-hour window and receive airline boarding passes by email when available from the airline. Some airlines charge for the privilege of early check-in before the 24-hour window opens, thus capitalising on the demand for desirable seats such as those immediately behind a bulkhead or emergency exit row.
  
presuppositions: Planes charge extra if the combined luggage weight is okay, but one piece of luggage is over the weight limit for a single piece.
corrections: Some airlines do allow a combined figure without charging extra if one piece of luggage is over weight.
raw_presuppositions: Planes charge extra if the combined luggage weight is okay, but one piece of luggage is over the weight limit for a single piece. Planes charge extra if the combined luggage weight is okay, but one piece of luggage is over the weight limit for a single piece.
raw_corrections: Some airlines do allow a combined figure without charging extra if one piece of luggage is over weight. Some airlines do allow a combined figure without charging extra if one piece of luggage is over weight.