What does a flight actually cost?

The number is three different things added together

A flight price is not one price. It is:

1. The fare — the airline's own charge for carrying you. This is the only part that moves with demand, and it is the part that can be $39 on a Tuesday and $340 on the Friday of the same week.
2. Carrier-imposed surcharges — the airline's charges that are not technically fare, historically fuel-related. They move slowly and are set by the airline, not by any government.
3. Government taxes and airport charges — departure taxes, security charges, passenger service charges. These are fixed per airport and per route, identical for everyone on the aircraft, and they do not fall when the fare does.

That third bucket is why a heavily discounted seat still costs real money, and why the saving between a cheap fare and an expensive one is smaller in percentage terms than the fare difference suggests. On some routes the taxes and charges are larger than the fare itself.

It is also why, when you cancel a non-refundable ticket, the taxes are often recoverable even though the fare is not — they were collected on your behalf rather than earned. How refunds work covers how to ask for that.

Why the person next to you paid something else

They almost certainly did, and it is not random.

Airlines sell a single cabin as a series of fare buckets at different prices, released cheapest first and closed as they sell. A revenue management system decides how many seats sit in each bucket, adjusts as the departure approaches, and reacts to how that specific flight is selling against forecast. When the cheap buckets are gone, the next price is what you see — not because anything changed about the aircraft, but because the inventory below it sold.

Three consequences worth internalising:

• Early is not automatically cheap. It is only cheap if the cheap buckets are still open, and on a departure the airline expects to fill, they are never loaded at all. That is why Thanksgiving flights do not reward patience on the peak days.
• A price that "went up" usually did not. A bucket closed. It rarely reopens, which is why the fare you saw yesterday may not come back.
• Nobody outside the airline can see the bookings that drive this. Which is why any tool claiming to predict a fare is inferring, not observing — how flight price tracking works is our account of exactly where that line falls, including the fact that we do not currently offer tracking.

Then there is what the fare does not include

The headline number stopped being the cost of flying somewhere about fifteen years ago. What has been unbundled out of it:

• Cabin baggage, on many basic fares — sometimes down to a bag that fits under the seat only.
• Checked baggage, almost always priced separately on short-haul and increasingly on long-haul basic fares. Cheapest online in advance, most expensive at the airport.
• Seat selection, including sitting with the people you are travelling with.
• Meals, priority boarding, and changes.

A fare that is $60 cheaper and excludes a checked bag both ways is often not cheaper. This is the single most common way a comparison goes wrong, and it is entirely avoidable: decide what you actually need on the aircraft, then compare fares that include it.

What we show, and what we do not

We show one total price per fare. We do not break it into base fare, surcharges and taxes — the supplier gives us a single figure, and we are not going to invent a split.

We show baggage on every fare as three possible states: included, with the pieces and weight where the airline discloses them; not included; or not stated by the airline — which we say in those words rather than guessing. A blank is not the same as a no, and pretending otherwise would cost you money at the airport.

We cannot price a paid bag for you, because we do not sell them. That number lives with the airline.

We show the fare rules with the fare — the branded fare name, whether it is refundable, and change and refund fees where they are published — so the cheapest number on the page is not the only thing you are comparing.

We show the cheapest price we can see for nearby dates, as a strip alongside your search. That is forward-looking availability, not history: it tells you what is bookable now on adjacent days, which is the single most useful thing to know, because moving a date usually beats hunting a discount.

The other half: what the rest of the trip costs

For most trips the fare is not the biggest line. The rooms are, and unlike a fare, a room price can be benchmarked.

We publish what we observe ourselves in our price reference: 3,124 price checks across 1,489 hotels in ten cities, taken between 9 and 12 August 2026, reported as the median cheapest available room per night for two adults, by star rating. A four-star night is a median of $547 in London, $630 in New York and $222 in Tokyo among the hotels we can book.

Two caveats we publish there and will repeat here: those cover the hotels we can actually sell rather than every hotel in the city, and they exclude local tourist taxes and property fees, which are collected at the property and can be a real addition to a long stay.

Then the things that are not on any quote:

• A pre-authorisation hold at check-in, which is not a charge but does reduce what you can spend — what hotel incidentals are explains why this hurts far more on a debit card.
• Getting from the airport to the bed. A cheap fare into a distant airport is not a cheap arrival. Our hotels near an airport or landmark pages exist partly for this.
• The cost of being wrong. A non-refundable room is a real cost if the trip moves. Price the free-cancellation version and see what the option costs before you decide you do not want it.

How to compare two prices honestly

1. Add the bags you will actually take to both sides. Then compare.
2. Compare arrival to arrival, not departure to departure. A fare that lands at 1am costs you a hotel night or a taxi — the arithmetic behind red-eye flights.
3. Check whether it is one ticket or two. Two tickets look cheaper and carry a risk nobody prices for you: the second airline owes you nothing if the first runs late.
4. Price the trip, not the leg. The cheapest single component very often sits inside the most expensive total — which is exactly why open-jaw itineraries can beat a conventional return.

Common questions

Why is the flight price different from the fare I saw advertised?

Advertised fares typically exclude taxes, charges and anything unbundled. The number at checkout includes them. Neither is dishonest; they are answers to different questions.

Why did the price change while I was booking?

Almost always because a fare bucket sold out and the next one is now the cheapest available. Occasionally it is a currency or a live-repricing step. It is rarely anything targeted at you.

Do prices go up if I search the same flight repeatedly?

We are not aware of any evidence for that as a general practice, and we are not going to assert it. Prices move because inventory moves, and inventory moves constantly on a busy route.

Why is the same route cheaper on different dates?

Because demand differs by day, and the airline has loaded different amounts of cheap inventory. This is the largest lever you control, which is why the nearby-dates strip is next to the results.

Do you add a fee to the price I see?

The price shown is the price charged. Two lines will appear on your statement if you book a flight and a hotel together, because those are two bookings — why was I charged twice explains it.

Can you tell me if this fare is a good price historically?

Not for flights. We do not publish flight price history and we will not imply we can predict one. For hotels we do publish what we observe — that is what the price reference is.

Is a cheaper fare with a connection worth it?

Sometimes. Price the connection's real cost: the time, the risk of a missed leg, and whether it is one ticket. On one ticket a missed connection is the airline's problem; on two it is entirely yours.

What is the cheapest part of a trip to get wrong?

The room, if it is cancellable. The flight, never — which is the argument for taking the flexible hotel rate and the cheap fare rather than the reverse.

Where do I see what I was actually charged?

On the booking's own page in your trips, as the total paid, in the currency charged. If you booked as a guest, finding your booking explains how to get to it.

Where do I start?

Search flights, search a city, or compare a flight and room together against booking them separately. For inspiration, the destination guides and the hotel directory. Anything unclear, contact us.