The true cost of a cheap flight: bags, seats and the journey to the airport

A very cheap fare is rarely the whole price. Compare total costs, not base fares.

Add the extras#

Budget airlines unbundle their fares. The headline price may include only a small under-seat bag. Then check what you'll need:

• Cabin or checked bag fees, which vary with when you add them. Adding at booking is usually cheaper than at the airport.

• Seat selection, if you want to sit together.

• Payment or booking fees on some carriers.

• Priority boarding, if it affects your bag.

• Meals and drinks on board.

Add the ones you'd use to the base fare. Compare the total with a full-service airline's fare that includes them.

Count the ground costs#

A cheap flight into a distant airport may cost more in transfers. Check the distance to the city centre and the price and time of the train, bus or taxi. Late arrivals may leave you with a taxi fare because public transport has stopped. Add that to the sum.

Time is a cost#

Early departures, long layovers and awkward connections cost time and sometimes a night in a hotel. Value your time realistically.

Flexibility and protection#

Cheap fares are often non-refundable and charge for changes. If your plans may change, check change fees, or consider a more flexible fare. Also check what happens if the airline cancels. In the UK and EU, passenger rights rules can entitle you to refunds or rerouting and, in some cases, compensation for delays and cancellations. In the US, the Department of Transportation requires refunds when an airline cancels and you choose not to travel.

Book smart#

Search in private or incognito windows if you suspect price changes. Compare on a search engine, but check the airline's own site before buying, since it may be cheaper or give better terms. Set price alerts if you can wait.

Pay by card#

Paying by credit card may add protection if an airline fails. Check your card's terms.

The sum to do#

Base fare plus bags, seats, transfers and an allowance for risk. Compare that number across options, not the figure on the first screen.