What your low-cost fare doesn't include (and how to avoid overpaying)
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A low-cost airline's base fare almost never includes checked baggage, seat selection, or boarding pass printing at the airport; the only things usually guaranteed are a seat (randomly assigned) and a small bag that fits under the seat in front of you. If your carry-on exceeds the allowed dimensions and gets caught at the counter or the boarding gate, the "excess" charge can exceed 50 EUR/USD, often more than the original discounted ticket itself.
The rest of the usual charges (checked baggage, seat selection, priority boarding, food, itinerary changes) are billed separately, and almost all of them are much cheaper if you add them when booking online than if you pay for them at the airport or during the flight.
The practical rule: calculate the total cost of your trip by adding the base fare to everything you'll actually need, and compare it to the price of a "full" fare or a traditional airline before assuming the low-cost option is cheaper.
What a basic fare almost never includes
- Checked baggage (paid separately, with a discount if added when buying the ticket).
- Specific seat selection (5-40 USD depending on location; emergency exit or front-row seats cost more).
- Priority boarding (5-15 USD).
- Food and drinks on board.
- Free date changes or cancellations (rarely included in the cheapest fare).
- In some cases, even printing or checking your boarding pass at the counter has generated high charges on certain airlines; always check the current policy before traveling.
The charge that surprises people most: oversized carry-on baggage
Many low-cost airlines physically measure your carry-on at the counter or boarding gate using a metal sizer. If it doesn't fit, the "bag not allowed" charge applied on the spot is usually considerably higher than if you had paid for checked baggage in advance online.
Comparison: paying online when booking vs paying at the airport
As a general reference (exact amounts vary by airline, route, and season):
How to calculate the real cost before buying
Before settling on the cheapest fare shown on screen, mentally add: checked baggage if you need it, seat selection if you're traveling as a group or family, and a margin for unexpected events like schedule changes. Only then can you fairly compare it against an "all-inclusive" fare from another airline. Also, if your itinerary depends on tight connections between different low-cost flights, consider that travel insurance with coverage for delays or missed connections can save you unexpected costs for lodging or replacement tickets.
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Paying online when booking vs paying at the airport (general reference)
| Service | Paid online when booking | Paid at the airport/boarding |
|---|---|---|
| Checked baggage | Reduced cost in advance | Considerably more expensive |
| Oversized carry-on baggage | Doesn't apply if within size limits | Can exceed 50 EUR/USD |
| Seat selection | 5-40 USD depending on location | Subject to availability and higher cost |
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Frequently Asked Questions
Why was I charged for my carry-on if it was never weighed when I bought the ticket?
Because the weight or size is checked physically at the counter or boarding gate, not when you buy the ticket online; if it exceeds the limit, the charge is applied right there.
Is it cheaper to add checked baggage online or at the airport?
It's almost always cheaper to add it online when booking or a few days before the flight; the price rises in stages as the travel date gets closer.
Does the basic fare include any free itinerary change?
Rarely; most of the cheapest fares don't include free changes, so check the change policy before buying if your itinerary isn't 100% certain.
Does travel insurance cover costs from low-cost airline delays?
It depends on the plan; several travel policies include coverage for flight delays or missed connections after a certain number of hours, so it's worth checking that specific clause when getting a quote.
