How much of a plane ticket is taxes and fees?

Short version: on most US domestic tickets, taxes and government and airport fees come to roughly 15 to 25 percent of what you pay. The exact share swings a lot, because several of the charges are flat dollar amounts. On a cheap fare they can be a big chunk, and on a pricey one they shrink as a percentage. International tickets almost always carry more, since you also pay each country's own departure taxes and airport charges.

What is baked into a US domestic ticket

A single fare usually bundles a handful of separate charges set by the government and by airports, not by the airline itself:

• Federal excise tax: 7.5 percent of the base fare, collected for the national aviation trust fund.
• Flight segment fee: $5.30 per takeoff and landing in 2026, so a connecting itinerary is charged for each leg.
• September 11 Security Fee: $5.60 per one-way trip, capped at $11.20 round trip.
• Passenger Facility Charge: up to $4.50 per airport you depart, up to $18 on a round trip, which the airport keeps for its own projects.

Because the segment fee, security fee, and facility charge are fixed dollars, they eat a bigger slice of a $99 fare than a $500 one. Several of these amounts adjust for inflation over time.

Why international tickets carry more

Fly abroad and the list grows. The US charges an international facilities fee of $23.40 per passenger in 2026 that applies to travel beginning or ending in the country, plus small customs, immigration, and agriculture inspection fees on arrival (roughly $7, $7, and $4). On top of that, the other country charges its own taxes. Some are steep: the United Kingdom's Air Passenger Duty rises with distance and cabin class, and many European and other nations levy their own departure or aviation taxes. A trip that touches three or four airports can stack several governments' charges into one fare.

How to see the breakdown yourself

At checkout, look for the "taxes, fees and charges" line, or expand the fare details. Airlines and search tools show the base fare separately from taxes and fees. On an international ticket you will often see a longer list of two-letter tax codes, one for each country and airport your trip passes through.

What this means for you: you cannot dodge these charges by switching airlines, since the government and airport pieces are identical no matter who you fly. What you can control is routing. Fewer connections means fewer segment fees and fewer airport charges, and avoiding high-tax departure points, like some UK airports, can trim a surprising amount off a long-haul fare.