I prefer to fly low-cost carriers like Spirit and Frontier over major airlines - here's how I avoid the extra fees for tickets, luggage, and food
Taylor Rains  Â
Spirit Airlines A320 at Boston airportTaylor Rains/Insider
- Low-cost carriers offer an a-la-carte business model that charges for extra amenities like luggage and seats.
- The surprise fees can frustrate passengers, but knowing what to expect can help avoid last-minute expenses.
Budget carriers like Spirit, Frontier, and Allegiant have made flying affordable for many travelers, though the low-cost business strategy can throw passengers for a loop if they are unprepared.
Frontier Airlines Airbus A321
Carlos Yudica/Shutterstock.com
Part of the reason why flying on a budget airline is so cheap is because the carriers unbundle the fares, meaning when a customer buys a ticket, all they get is a random seat and a small personal item like a backpack or briefcase. Anything more, like a carry-on, checked bag, reserved seat, snack, or priority boarding costs extra.
Spirit Airlines bundles
Spirit Airlines
Source: Spirit Airlines
Despite these carriers telling customers the add-on amenities will cost extra during the booking and check-in process, many travelers still show up at the airport with more than they paid for, causing last-minute stress and an expensive day of travel.
Allegiant Air aircraft
Markus Mainka/Shutterstock
To avoid any surprises, it is helpful to understand the potential fees and learn how to dodge them, even if it means sacrificing a bit of comfort and convenience.
Spirit Airlines aircraft
Thiago B Trevisan/Shutterstock
Personally, I prefer flying low-cost carriers because, as opposed to popular belief, it is frequently cheaper to fly a-la-carte where I can pick and choose what I need for a particular flight versus flying on a mainline carrier.
Frontier Airlines gate
Thomas Pallini/Insider
For example, I flew six hours on Spirit from Boston to Las Vegas for a short weekend trip, and I chose to only add a seat to ensure I would not get stuck in the middle seat on the long flight, but I did not pay for a carry on or checked bag because I didn't need it.
Spirit Airlines A320 at Boston airport
Taylor Rains/Insider
As a frequent flyer on low-cost carriers, I have learned the ins and outs of ensuring I am paying the least amount of money possible for the service, which includes knowing exactly how to avoid certain fees.
Frontier Airlines kiosk
Thomas Pallini/Insider
First and foremost, what many people do not know is that purchasing airfare at the airport ticket counter can save customers up to $46 roundtrip per ticket.
Spirit Airlines counter at Boston airport
Taylor Rains/Insider
Source: airfarewatchdog
This is because low-cost carriers tack on a "passenger handling fee" for online bookings, but it is waived for customers who buy in person at the airport.
Spirit Airlines ticket bought at the airport
Taylor Rains/Insider
Source: airfarewatchdog
Three carriers impose these additional fees, including Spirit that charges up to $22.99 each way...
Spirit Airlines passenger usage fee
Taylor Rains/Insider
Source: airfarewatchdog, Spirit Airlines
Frontier, which charges up to $23 each way...
Frontier Airlines carrier interface charge
Taylor Rains/Insider
Source: airfarewatchdog, Frontier Airlines
And Allegiant which charges up to $18 each way.
Allegiant Air carrier usage charge
Taylor Rains/Insider
Source: airfarewatchdog, Allegiant
It is important to understand that tickets can be bought at the airport ticket counter for flights on Frontier, Spirit, and Allegiant only - it does not work on other carriers.
Frontier Airlines ticket counter
Thomas Pallini/Insider
Source: airfarewatchdog
Spirit and Frontier tickets are available for purchase most times of the day, though Allegiant has specific windows of availability which can be found on the carrier's website.
Allegiant Air counter
Joni Hanebutt/Shutterstock
Source: Allegiant
Moreover, Allegiant also offers special discounts for roundtrip fares purchased on its website, but they do not apply to tickets bought in person.
Allegiant Air aircraft
Daniel J. Macy/Shutterstock
Source: airfarewatchdog
Another way to avoid surprise fees is by buying carry-on and checked luggage online before arriving at the airport. Paying bag charges at the airport can run passengers an extra $100 per bag depending on the carrier, versus $30-$75 it costs when purchasing in advance.
Spirit Airlines bag size checker
EQRoy/Shutterstock
Source: Spirit Airlines, Allegiant, Frontier Airlines
Customers should also pay attention to the weight and size of their luggage. All three airlines have strict dimensions for personal items, carry-on bags, and checked luggage, and airline employees are required to enforce them.
Spirit Airlines bag size checker
Taylor Rains/Insider
Source: Spirit Airlines, Allegiant, Frontier Airlines
Spirit personal items can be no bigger than 18 x 14 x 8 inches and carry-ons must be 22 x 18 x 10 inches or smaller including wheels and handles.
Spirit Airlines bag check
Eric Glenn/Shutterstock
Source: Spirit Airlines
Frontier has the same dimensions for personal items as Spirit, though its carry-ons can be up to 24 x 16 x 10 inches, which is a little larger than Spirit's allowance.
Frontier Airlines bag check
Thomas Pallini/Insider
Source: Frontier Airlines
Allegiant's personal item and carry-on size allowance are the smallest of the three carriers at only 7 x 15 x 16 inches and 9 x 14 x 22 inches, respectively.
Allegiant Air bag restrictions
Allegiant Air
Source: Allegiant
Because of the strict restrictions, passengers need to ensure they measure their bags before heading to the airport or measure them in the dedicated bag size checkers at the ticket counter or gate.
Spirit Airlines bag size checker
Taylor Rains/Insider
Source: Spirit Airlines, Allegiant, Frontier Airlines
Passengers need to be particularly mindful of the weight of their checked luggage on low-cost carriers. Spirit and Allegiant's maximum weight allowance for checked bags is only 40 pounds, which is less than the 50 pounds allowed on mainline carriers and Frontier.
Spirit Airlines kiosks
Thomas Pallini/Insider
Source: Allegiant, Spirit Airlines
Showing up at the airport with an overnight bag will run the customer anywhere from $30 to $100 extra depending on the weight and carrier.
Frontier Airlines check in
Thomas Pallini/Insider
Source: Spirit Airlines, Allegiant
Moreover, showing up with an oversized bag can cost up to $150 extra. Spirit and Frontier have a strict 62 inches total dimension for checked bags, while Allegiant offers a more flexible 80 inches.
Checked luggage
Katherine Frey/The Washington Post via Getty Images
Source: Spirit Airlines, Frontier Airlines, Allegiant
Low-cost carriers are no-frills, meaning they offer nothing onboard, not even water in most cases, so customers should plan on bringing their own drinks and snacks. Buying onboard will cost anywhere from $3-$35 depending on the package.
Inflight snacks and drinks cost extra
Thomas Pallini/Insider
Source: Spirit Airlines, Allegiant, Frontier Airlines
If you're like me and do not care about where you sit on most flights, then you should be okay with the random seat assigned by the airline at check-in. However, if you want to ensure you are not in the middle seat, you should buy your seat in advance, which can cost anywhere from $5 to $80.
Allegiant Air aircraft
Joni Hanebutt/Shutterstock
Source: Spirit Airlines, Allegiant, Frontier Airlines
Reserving a seat as far in advance as possible is recommended because the closer the departure date is, the fewer options there will be. This means you may have to pay more for a window or aisle seat in the exit row or towards the front of the plane because the cheaper ones towards the back are already taken.
Frontier Airlines seats
Thomas Pallini/Insider
Checking in online or at the self-serve kiosks at the airport is also imperative for saving money. Spirit charges customers who check-in at the ticket counter $10 per boarding pass, so avoid this by using the airline's mobile app to check-in in advance.
Spirit Airlines passengers during the pandemic
PATRICK T. FALLON/Getty Images
Source: Spirit Airlines
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