You’ve found a flight at an unbelievably low price—so you click "Book Now" without thinking twice. But as you move through the checkout process, the total fare jumps. Add-ons for baggage, seat selection, service charges, and taxes pile up until your "cheap ticket" no longer feels like a bargain.
Sound familiar?
In 2025, travelers are becoming more budget-conscious, but airlines are also becoming more clever about how they display prices. If you want to outsmart the system and book flights like a pro—with no hidden fees—this guide is for you.
Why Airlines Use Hidden Fees
Before we dive into tips, it’s important to understand why hidden charges exist. Airlines, especially low-cost carriers, advertise attractive base fares to lure in bookings. To keep those headline prices low, they strip out many services that used to be included, then charge separately for:
Baggage (both checked and cabin)
Meals and drinks
Seat selection
Priority boarding
Booking via third-party sites
Knowing this, the goal isn’t just to find the cheapest base fare—but to understand the true cost of your flight.
Pro Tip #1: Know What’s Included
Don’t assume anything is free anymore. When you see a flight deal, click through to see what the fare includes. Is it just a seat with no baggage? Does it come with the option to make changes or cancellations? Many of the lowest fares are non-refundable and come with strict limitations.
Always read the fare conditions before booking.
Pro Tip #2: Compare Total Cost, Not Base Fare
Many flight comparison tools show only the base price. Once you select a flight, use the airline’s website to review the total cost after taxes, fees, and extras. Sometimes, what looks cheaper initially turns out to be more expensive once baggage or seat selection is added.
Make sure you're comparing apples to apples.
Pro Tip #3: Watch Out for Add-Ons at Checkout
Booking sites will often auto-select extras like travel insurance, carbon offset donations, or “flexible ticket” options. These are not always necessary. Go through each step of checkout slowly and untick any boxes you don’t need.
Remember: not all add-ons are bad—just don’t pay for what you won’t use.
Pro Tip #4: Pack Smart to Avoid Baggage Fees
One of the most common hidden charges is baggage fees. Some airlines charge for both carry-on and checked bags, depending on your fare class. To avoid surprises:
Check the baggage policy before you book
Weigh your bag before arriving at the airport
Use a backpack or soft-sided carry-on to meet cabin limits
If you must bring more, it's often cheaper to pay for luggage during the booking process than at the airport.
Pro Tip #5: Use the Right Fare Type
Most airlines now offer tiered pricing—Basic, Standard, Flex, etc. Basic fares might save you money upfront but can cost more if you need to make changes, add bags, or select a seat.
Sometimes, a slightly higher fare includes free baggage and better change policies—saving you money and stress later.
A helpful breakdown of how to avoid extra charges is covered in this expert guide on flight booking tips, which goes even deeper into the traps to watch for.
Pro Tip #6: Be Cautious With Budget Airlines
Budget airlines thrive on upselling. They might offer rock-bottom fares, but then charge for:
Seat assignments (even for families wanting to sit together)
Printing boarding passes at the airport
Onboard refreshments
Credit card transaction fees
Always read the final itinerary to see exactly what you’re paying for—and be sure to check in online early.
Pro Tip #7: Avoid Foreign Transaction Fees
Some booking sites are based in different countries and charge in foreign currencies. This can lead to hidden charges from your bank or credit card provider. Use cards with no foreign transaction fees or ensure the price is shown in your local currency.
Pro Tip #8: Check Airport Fees and Taxes
Airport taxes, security charges, and fuel surcharges can sometimes add £50 or more to your total fare, especially on long-haul routes. These are usually included in the final price, but not always shown until the final checkout screen.
Don’t finalize a booking until you see the grand total.
Booking Like a Pro in 2025
Flight booking has become a game of strategy—and knowing how to play means you win every time. Don’t just grab the lowest price you see; instead:
Dig into what’s included
Compare total prices across platforms
Avoid paying for extras you don’t need
Book early and wisely
A little research now can save you from spending more than you planned. With these expert tips, you’ll be flying smarter, not just cheaper.
