What the hidden extras which make flights more expensive?

Flying from the UK with a budget airline can seem like a bargain — until you add in all the extra costs. That low headline fare often hides a web of add-ons: printing your boarding pass, checking in at the airport, seat selection, priority boarding, bags, onboard snacks — and before you know it, your budget flight is no longer so budget. Here’s a closer look at some of the most common extra fees, how they work, and how to avoid getting caught out.

1. Boarding pass / airport check-in fees

One of the early traps: some airlines expect you to check in online and bring a printed or mobile boarding pass. If you don’t do that, you could be hit with an extra charge. According to a travel guide, “some airlines charge fees for printing boarding passes at the airport or for checking in at the counter rather than online.”

For example, the UK travel press notes that for Ryanair passengers if you haven’t checked in online, you may face a fee of £55 per person for airport check-in.

Tip: Always check in online within the time window allowed, use a mobile pass (if accepted), print ahead if needed, and avoid arriving at the airport only to pay extra.

2. Seat selection and sitting together

The classic low-fare ticket often gives you a random seat. If you want to pick your seat in advance (for example to sit with your family or get extra leg-room), there’s usually a fee. According to one guide: “Selecting your preferred seat … may require payment. The charge typically depends on the flight’s duration and seat location.”
If you’re travelling with children and want to ensure you sit together, you might end up paying more.

Tip: Either accept a random seat (if you don’t mind) or book the seat selection when you purchase the ticket (often cheaper than later).
Tip 2: If the children are very young and the airline policy allows free seat assignment to sit them with an adult, check that carefully.

3. Priority boarding / extra cabin baggage

Another “optional” add-on that often becomes “necessary” if you want any comfort or extra bags in the cabin. Priority boarding often includes being among the first to board (so you secure overhead space for your bag) or being able to bring an extra cabin bag. According to the Booking.com guide: “Priority boarding offers passengers the option of earlier access to the cabin and overhead storage space … Most short-haul flights no longer include complimentary meals or snacks.”

Tip: If you’re travelling with cabin luggage and want a guaranteed spot for it, factor in the priority boarding cost. If not, travel ultra-light.

4. Checked baggage & hold luggage

One of the biggest extra costs for budget airlines. The base fare often only includes a very small personal item (e.g., small handbag or laptop bag) and nothing more. The Booking.com guide says: “Checked baggage fees can vary based on weight, route, and whether you pre-book online or pay at the airport.”
We also know that airlines such as Ryanair and Wizz Air impose big fees for added or overweight baggage.

Tip: Before booking, check the size and weight limits of your included baggage. Weigh your bags at home, and if possible, purchase your checked baggage allowance in advance (online) rather than at the airport (which is usually more expensive).

5. On-board food and drink

Another area where budget carriers keep the base fare low by charging for extras. The Booking.com guide states: “Most short-haul flights no longer include complimentary meals or snacks. On-board refreshments may be available for purchase during your flight, with prices typically higher than those found in airports or stores.”

Tip: Bring your own snacks and an empty water bottle (if security and airport allow) so you can fill it after security and avoid the higher onboard prices.

6. Miscellaneous fees: payment surcharges, name changes, and surprises

Beyond the obvious there are other lurking costs:

• Some carriers charge extra for certain payment methods (credit cards, etc).

• Mistakes in the passenger name, booking changes, missing the check-in window — all may incur hefty fees.

• The “base fare” may look cheap but once you add seat, bags, check-in, you may be paying significantly more than expected.

Summary: the hidden extras add up

In essence: the low headline fare is nice for first glance, but you must factor in the “extras” if you want anything more than travel lite and flexible. The travel guide rightly notes: “The cheapest base fare isn’t always the best value once you factor in all the necessary add-ons.”
So if you’re flying from the UK with a budget airline, ask yourself:

• Have I checked-in online?

• Do I need to print a boarding pass, or can I use a mobile pass?

• Do I need to select a seat, or am okay with random seating?

• Do I want priority boarding or extra cabin bag?

• Am I travelling with hold luggage and have I pre-booked that?

• Will I need food or drink onboard? Do I bring my own?

• Have I double-checked the payment method fees and terms for changes?

Focus on the bargain

Budget airlines have opened travel to many more people — amazing value is possible. But the business model relies heavily on ancillary revenues (i.e., the extra fees) rather than just the ticket price itself. If you go in with your eyes open, you can secure a great deal. If you assume “everything is included” you could end up surprised. When booking, always compare total cost (ticket + all likely extras) rather than just the fare. Double-check what’s included, plan ahead for bags and seats, check-in online, and bring your own snack if you can. That way you avoid let-downs and your “bargain” flight stays a bargain.