Ultra-low-cost carriers make money by unbundling. The base fare covers a seat and often only a small item. Bags, seat selection and sometimes even printing a boarding pass cost extra.
Read exactly what is included
Before you pay, open the fare conditions and find three things: what personal item is included, whether a carry-on is included, and the weight limit for each. Take a screenshot of the conditions at the time you book.
Buy add-ons early
On many budget airlines, adding a bag during booking costs less than adding it later, and at the airport it is typically the most expensive. If you know you need a carry-on, add it when you buy the ticket.
Pack to the smallest allowance
If you are travelling on the free personal item only, plan for it. Choose a soft, thin bag that meets the stated size; see our Bag Finder with an underseat allowance.
| Bag | Size (cm) | Capacity | Weight |
|---|---|---|---|
| 40 × 25 × 20 cm | 20 L | Not listed | |
| 43 × 28 × 13 cm | 13 L | Not listed | |
| 50 × 28 × 24 cm | 20 L | Not listed |
Sizes are manufacturer-listed; confirm them before you buy.
Practical tips
- Wear your bulkiest items. A jacket with big pockets is a legitimate way to carry a few small things.
- Weigh your bag. Some airlines weigh carry-ons at the gate.
- Use a luggage scale. See our picks in Luggage accessories.
- Do not rely on leniency. It varies by airport, flight and crew.
Compare the total cost
A cheaper base fare with a bag add-on can end up costing the same as a full-service fare. Add your bag to each option and compare the totals, including seat selection if you need it.
Frequently asked questions
Is a personal item free on budget airlines?
On many fares, yes, but not all. Check the fare conditions for the exact sizes and any weight limit.
Is it cheaper to buy a bag at booking?
Usually. Prices at the airport are typically the highest. Check the airline’s current fees.
Do budget airlines weigh bags?
Some do. Weigh your packed bag at home to be safe.
Information here is general and can go out of date. Confirm airline rules with the airline before you travel. See our methodology.
