That bargain fare on your screen is often just the down payment, because bags, seats, check-in, and even a typo can each carry their own published fee.
Some charges on this list are small annoyances, but a few can top the ticket itself, and the worst one is a combination most travelers never see coming.
#16 – Strict Personal Item Size Limits Force Extra Purchases
Budget carriers publish exact dimensions for the one free bag that fits under the seat. Ryanair allows only 40 x 30 x 20 cm, and anything larger triggers the paid Priority & 2 Cabin Bags option.
Frontier and Spirit restrict the free personal item to 18 x 14 x 8 inches on base fares. A standard backpack often turns out to be too big at the gate, where staff measure strictly and charge the full carry-on fee on the spot.
But the next one starts low and climbs fast…
#15 – Carry-On Fees for Overhead Bin Access Start Low but Rise Fast
Several European and U.S. ultra-low-cost carriers charge separately for any bag that goes in the overhead bin. Ryanair lists Priority & 2 Cabin Bags from €12.49 to €36 when added at booking.
The same option jumps to €19.99–€45.50 after booking or at the airport. EasyJet charges from £23.49 for a large cabin bag on many routes, with gate prices reaching £60.
Now picture paying just to choose where you sit…
#14 – Seat Selection Fees Begin at $15 and Climb With Location
Frontier publishes seat selection starting at $15 per passenger per segment on base fares, and preferred or exit-row seats cost more.
Spirit lists regular seat upgrades from $1 to $200 depending on the flight and demand. American Airlines Basic Economy also charges a fee for advance seat selection. Skip it and you get a random assignment at check-in, even on short domestic routes where the base fare is under $50.
At a Glance
- Frontier: seat fees start at $15 per passenger, per segment.
- Spirit: regular seat upgrades range from $1 to $200.
- American Basic Economy: advance seat selection carries a fee.
- Skip the fee and your seat is assigned at check-in.
And then there’s the fee for showing up in person…
#13 – Airport Check-In Fees Reach £55 on Ryanair
Ryanair charges £55 or €55 for airport check-in on its published fee tables. Wizz Air lists €40–€50 at the desk.
Frontier charges up to $25 when an agent assists with check-in. The fee applies per passenger per flight segment, and late arrivals at the desk still pay it even if the flight is not full.
Next, one wrong letter can cost real money…
#12 – Name Correction Fees Hit $75 on Frontier
Frontier publishes a $75 fee per passenger for name corrections. Similar charges appear on other ultra-low-cost carriers when the ticketed name does not match government ID exactly.
Even minor spelling errors require payment before boarding is allowed. Some carriers allow one free correction within a short window after booking, but most apply the fee immediately. Booking through a third party can add extra steps and costs.
The policy protects against fraud, but it catches plenty of innocent typos. Changing the trip itself gets pricier still…
#11 – Route Change Fees Reach $99 Within Days of Departure
Frontier charges $0 for changes more than 60 days out on basic fares, then $49 between 7–59 days and $99 within six days. Spirit lists $69–$119 for standard changes, dropping to zero only beyond 60 days.
Delta allows $0–$500 changes on Basic fares depending on route and timing, plus any fare difference. Those fees stack on top of any price increase for the new itinerary, so flexibility can end up costing more than the original ticket.
Quick Compare
- Frontier, more than 60 days out: $0 on basic fares.
- Frontier, 7–59 days out: $49.
- Frontier, within six days: $99.
- Spirit: $69–$119, with zero only beyond 60 days.
But a clock can hurt you even more than a calendar…
#10 – Late Check-In Cutoffs Can Leave You Paying or Stranded
Many budget carriers close online check-in 2–4 hours before departure. Miss that window and you are pushed to the airport desk and its fee.
Ryanair and Wizz Air enforce strict cutoffs that can result in denied boarding if not met. Arrive without a boarding pass on your phone or on paper, and you either pay the airport fee or watch the flight leave.
Then the scale itself becomes the villain…
#9 – Overweight Bag Fees Start at $75 for 41–50 lbs
Frontier charges $75 for bags 41–50 lbs and $100 for 51–100 lbs. Allegiant lists $50 for 51–70 lbs and $75 for 71–100 lbs.
Spirit publishes $125 for bags 51–100 lbs. These fees land on top of the standard checked bag charge, and most routes offer no grace weight. Bags are weighed at check-in and again at the gate, which makes longer trips risky.
Size matters too, and not just weight…
#8 – Oversized Bag Charges Hit $75–$150
Frontier charges $75 for bags 63–100 linear inches. Spirit lists $150 for 63–80 linear inches, and Allegiant applies $75 for bags up to 80 linear inches.
Ryanair charges €70–€75 at the gate for oversized cabin bags that must go in the hold. These fees are separate from standard baggage charges and apply when a bag exceeds published dimensions in any direction. Plenty of ordinary suitcases only reveal their linear-inch total at the airport.
Even a piece of paper can come with a price tag…
#7 – Printing Boarding Passes at the Airport Costs Up to $25
Several carriers charge for paper boarding passes issued at the airport. The fee reaches $25 on some U.S. budget airlines when passengers arrive without printing or showing the digital version.
This applies even when online check-in was completed. A dead phone battery or a missing printer can turn into a surprise bill. European carriers fold similar costs into airport check-in fees instead.
The next one is the fee for simply being first in line…
#6 – Priority Boarding Add-Ons Start at $10–$35
Budget carriers sell priority boarding as a separate purchase. Prices range from $10 on some routes to $35 or more when bundled with other services, and they are set dynamically.
Passengers who skip it board last and risk limited overhead space even after paying for a carry-on. Families and groups often buy it just to stay together.
And the price of a bag may change depending on the day you look…
#5 – Dynamic Baggage Pricing Varies by Route and Date
Frontier and Spirit do not publish flat bag fees. Prices move with demand, route, and how far in advance the bag is added.
A carry-on can cost $39–$65 when booked early and rise to $75–$99 at the gate. European carriers show similar swings, with Ryanair cabin bag options from €12.49 to €36 at booking. Check the same trip on different days and you may see different totals.
Now for the fee that punishes a change of plans in the same 24 hours…
#4 – Same-Day Change Fees Reach $60–$150
American Airlines lists $60 for same-day confirmed changes on domestic routes. JetBlue charges $100–$200 for changes on Blue Basic fares.
Delta allows standby for free on some domestic routes, but confirmed changes carry fees on Basic tickets. The charges apply whenever you want an earlier or later flight on the same day, which limits flexibility on the cheapest fares.
And if you can’t go at all, the math gets uglier…
#3 – Cancellation Fees Can Exceed the Original Ticket Price
Frontier charges up to $99 for cancellations close to departure on basic fares. One reported case showed a $510 cancellation fee on a $588 round-trip.
Spirit lists $69–$119 for changes that function like cancellations on standard tickets. The fees apply even when the passenger cannot travel, and refunds are limited to credit in many cases. Over time, the total paid can surpass the base fare several times over.
But the gate has the highest prices of all…
#2 – Gate Bag Fees Reach $99 on Spirit
Spirit charges up to $99 at the gate for a carry-on bag not added earlier. Ryanair lists €46–€75 for oversized or unpaid cabin bags presented at boarding.
EasyJet charges £60 for a large cabin bag added at the gate. These are the highest published rates for bags, and they hit passengers who try to board with an unpaid one. The policy exists to force advance purchase.
Why It Stands Out
- Spirit: up to $99 for a carry-on added at the gate.
- Ryanair: €46–€75 for unpaid or oversized cabin bags at boarding.
- EasyJet: £60 for a large cabin bag added at the gate.
- The same bag costs less when it is added at booking.
But the worst damage comes when two fees collide…
#1 – Name Corrections and Route Changes Combined Can Triple the Cost
When a $75 name correction combines with a $99 route change, the add-ons alone exceed many base fares. Add a carry-on or a seat selection and the total climbs even higher.
Published schedules show these fees stack without discounts. A low advertised price can become a bill several times larger before departure. Travelers who verify every detail at booking avoid the biggest penalties.
The Bottom Line
The advertised fare covers the seat you might not get, not the trip you actually plan to take. Cabin bags, seat selection, airport check-in, name fixes, and last-minute changes each carry specific charges that can surpass the original ticket.
Read the full fee table before you pay, and add only what you need at booking, when the prices are lowest. Did we miss one? Drop it in the comments.
