What Budget Airlines Actually Include—and What They Charge Extra For

The core difference: seat and fuel, nothing else

Budget airlines strip their ticket down to the absolute minimum: a seat on the plane and the fuel to get you there. Everything else—checked bags, carry-on bags, seat selection, water, a blanket—costs extra or doesn't exist. A full-service airline builds those things into the ticket price. A budget airline makes you pay for each one separately, and counts on most passengers not using most of them.

The math works because some passengers travel with nothing but a personal item and don't care where they sit. For them, the base fare is genuinely cheap. For everyone else, the add-ons stack up fast. You need to know what each airline includes before you book, because the "cheapest" ticket can end up costing more than a full-service competitor once you add what you actually need.

Key Takeaways

• Budget airlines charge separately for checked bags, carry-on bags, seat selection, and checked baggage—sometimes $15 to $40 per item depending on the airline and when you pay.
• Carry-on bag policies vary: some budget airlines allow one free personal item only, while others include one free carry-on bag but charge for a second.
• Seat selection is free on some budget airlines and $5 to $15 per flight on others; exit row and extra-legroom seats cost more.
• Payment methods, name changes, and cancellations all carry fees on budget airlines that full-service carriers often waive or include.
• The true cost of a budget ticket emerges only after you add the services you actually need—always calculate the total before comparing to other airlines.

Checked baggage: the biggest variable

Checked bag fees are where budget airlines make the most money, and the pricing varies wildly. Some charge $15 to $25 for the first checked bag if you pay online before your flight, then $30 to $40 if you pay at the airport. A second checked bag costs more. Some budget airlines include one free checked bag if you have a credit card with them or pay for a membership; others charge for every bag, every time.

The catch: these fees are per direction. A round trip with one checked bag means you pay twice—once outbound, once return. If you're traveling with a partner or family, the cost multiplies. Before you book, add up what you'll actually pay in baggage fees. A $79 ticket plus $50 in checked bag fees is a $129 ticket, and that might not be cheaper than a full-service airline selling the same route for $110 with bags included.

Carry-on bags and personal items

This is where budget airlines differ most from each other. Some allow one free personal item (a purse, backpack, or small laptop bag) and charge $15 to $25 for a carry-on roller bag. Others allow one free carry-on bag plus one free personal item. A few charge for both. The size limits are also tighter on budget airlines—a carry-on that fits on Southwest or United might be too large for a budget carrier.

Measure your bag before you book. Budget airlines enforce size limits strictly, and if your bag is too large at the gate, you'll pay a fee to check it or be forced to check it for free but lose the ability to grab it during a connection. Some budget airlines let you buy a "carry-on bundle" that guarantees you can bring both a personal item and a carry-on bag; this costs $10 to $30 depending on the airline and when you buy it.

Seat selection and extra legroom

Most budget airlines charge for seat selection. Standard seats are free on a few carriers, but premium seats—exit rows, extra legroom, or seats near the front—cost $5 to $20 per flight. Some airlines let you select a free seat at check-in (24 hours before departure) if you don't want to pay, but you get whatever's left. Others assign you a random seat unless you pay.

If you're tall, have mobility issues, or travel with a small child and need to sit together, these fees add up. A family of four paying $10 per person for seat selection on a round trip is spending $80 just to sit where they want. Check the airline's policy before booking, especially if sitting together matters to you.

Meals, drinks, and onboard services

Budget airlines don't include free drinks or snacks. Water is usually free, but anything else—coffee, juice, a sandwich, a candy bar—costs money. Prices are higher than you'd pay on the ground: a bottle of water might be $3, a sandwich $8. Some budget airlines have partnerships with food vendors and let you order ahead and pick up at the airport, which can be cheaper than buying onboard.

Entertainment, pillows, and blankets don't exist on most budget airlines. If you want to watch a movie or read something, bring your own device and download content beforehand. Wifi is sometimes free, sometimes paid ($5 to $8 for a one-time pass, $60 to $70 for a monthly pass). Charging ports are rare. If you're flying more than three hours, bring everything you'll need to stay comfortable.

Fees for changes, cancellations, and payment methods

Budget airlines charge to change your flight, even if you're changing to a different date on the same route. The fee is typically $25 to $75 per change, plus you pay any difference in fare. Cancellations are usually non-refundable, though some budget airlines offer a travel credit you can use later. A few offer refundable tickets, but they cost significantly more than the base fare.

Payment method matters too. Some budget airlines charge a fee if you pay with a credit card ($3 to $5 per ticket) but not if you pay with a debit card or bank transfer. Name changes are usually not allowed, or cost $50 to $100 to process. Read the fine print before you book—these fees can turn a cheap ticket into an expensive one if your plans change.

Comparing total cost across airlines

The only honest way to compare budget airlines is to calculate the full price you'll actually pay. Start with the base fare, then add: checked bags (if you need them), carry-on bags (if the airline charges), seat selection (if you want a specific seat), and any other services you'll use. Do this for at least two airlines and one full-service carrier on the same route. The cheapest base fare often isn't the cheapest total price.

Use a spreadsheet or a piece of paper. Write down each airline's base fare, then add the fees line by line. Include round-trip fees—baggage charges apply both ways. Some budget airlines' websites show the total price with common add-ons already included; others hide fees until the final step of checkout. If an airline doesn't show you the total until you're almost done booking, that's a sign the add-ons are substantial.

Frequently Asked Questions

Can I bring a personal item for free on budget airlines?

Most budget airlines allow one free personal item—a purse, small backpack, or laptop bag that fits under the seat in front of you. Carry-on roller bags usually cost extra. Check the specific airline's website, because policies vary and size limits are strict.

What happens if my bag is too big at the gate?

You'll be charged a gate fee (usually $50 to $100) to check it, or forced to check it for free if you can't pay. On a connection, this means your bag won't make the flight with you. Measure your bag before you leave home and compare it to the airline's stated dimensions.

Do budget airlines ever waive baggage fees?

Some do for elite frequent flyer members or credit card holders. A few include one free checked bag if you purchase their airline credit card. Read the terms—the annual fee for the card might not be worth it unless you fly that airline regularly.

Is it cheaper to buy a round-trip ticket or two one-way tickets on a budget airline?

It depends on the airline and the route. Budget airlines don't always discount round-trip tickets the way full-service carriers do. Price each direction separately and add them together, then compare to a round-trip fare. Sometimes two one-way tickets are cheaper.

What's the difference between a budget airline and a full-service airline's cheapest fare?

A full-service airline's cheapest fare usually includes a checked bag and a carry-on bag. A budget airline's cheapest fare includes neither. Once you add bags to a budget airline ticket, the total price often matches or exceeds a full-service airline's basic economy fare for the same route.