Teaser Tax: The Gap Between Ad and Bookable Price
Teaser tax is the gap between the price advertised in a flight deal and the price you can actually book once the fare is live. It usually reflects a mix of fare changes, seat limits, and conditions that were not visible in the teaser. Our radar data puts the median teaser tax at 14%.
One real example
In our dataset, a teaser can look compelling before the booking page loads: HNL→Tokyo appears at USD 494, while MEX→Brussels shows MXN 12642. A third example sits at EUR 550. Those are the kinds of live prices that matter because they are the bookable end state, not just the headline number.
What people get wrong
The common misconception is that teaser tax means a deal is fake. It doesn’t. A fare can be real and still shift by the time you click through, especially when the market is moving quickly or when the lowest fare class is already close to selling out. The useful question is not whether a deal was ever possible, but whether the advertised price matches what you can still book now.
When it matters
Teaser tax matters most when you are comparing fast-moving routes or planning far ahead. Our data shows the median lead time is 69 days, which is long enough for fares to change before you ticket. If you are watching a specific route, use price watches and compare against our deal board so you can see whether the headline fare still survives the click. For timing context, our booking guide explains how fare windows tend to behave.
Method. This glossary entry is based on FlightWhisper’s cached market data across 27601 deals, with 13809 resolved observations spanning 343 origins and 844 destinations. The numbers are recomputed monthly. We can measure the advertised-to-bookable gap in the market we capture, but we cannot know every airline’s unpublished inventory or the exact reason a fare changed after it was teased.
Prepared with automated analysis and editorial tools. See each article for its sources and limitations.
Browse the deal board →