The offer is narrow enough to explain in a sentence, which is why the site can repeat it on every airport page without becoming vague. The example is the FastTrackFirst product.
What the site is selling
FastTrackFirst sells airport fast track: priority security and passport control, a QR pass sent by email, and a dedicated assistant for the lane. The homepage names Heathrow, Dubai, and Paris Charles de Gaulle, then points at the other hubs. It is a lane through the checks. It is not a flight, a lounge, or a promise about the road outside the terminal.
One page for each airport
Each hub has its own page, and the page names the terminals. Heathrow is Terminals 2, 3, 4 and 5. Dubai International is Terminals 1, 2 and 3. Charles de Gaulle is Terminal 1, Terminals 2A to 2G, and Terminal 3. Changi is Terminals 1 to 4. Barcelona El Prat is Terminals 1 and 2. Rome Fiumicino is Terminals 1 and 3. JFK lists Terminals 1, 4, 5, 7 and 8. Los Angeles includes the Tom Bradley terminal and Terminals 1 to 8. Istanbul is the main terminal, with buggy assistance mentioned because the walk is part of the delay. Bangkok Suvarnabhumi is the main terminal and concourses A to G. Athens and Hong Kong are each a main terminal. A generic city page would hide the only fact that makes the booking usable.
What the form asks
The booking asks for the flight number, the date, the passengers, and whether the trip is a departure, an arrival, or a transit. Those fields are the design. A pass for the wrong terminal is a picture of a QR code. The stated starting price on most of the airport pages is from $35 a person. Suvarnabhumi is listed from $45. Each page also gives a time window for the checks, from about 20 minutes at the quicker airports up to the longer windows published for JFK and LAX. That number is the site’s own planning figure for the lane, not a claim about the rest of the journey.
What a case study can honestly say
The pages say what is included: fast-track security, fast-track passport control, email confirmation, a digital QR pass, and an assistant. They also leave out what is not included. You still follow the airport’s security rules, you still need a valid passport, and you still have to walk to the gate. For a design, SEO, or marketing example, that restraint is the point. The page is specific enough that a visitor can tell Heathrow Terminal 5 from a Dubai transit, and short enough that the form is the next step rather than a brochure.
Use it as a reference for structure. Separate pages for separate airports. A form that names the flight. A homepage that says the offer once. No extra product mixed into the same screen.