Frankfurt → Barcelona

Business demand tends to firm up weekday fares, especially for the departures that let someone arrive in time for a morning meeting or get home the same evening. Leisure demand does the opposite: it swells around public holidays, school breaks and the summer travel season, and it is much less fussy about departure time. Knowing which of the two is driving your dates helps you predict where the pressure will be.

That gives flexible travellers a clear opening. If you do not need the most convenient slot of the day, price the quieter departures too, and compare a run of dates on this page rather than a single one. Where your trip spans a weekend, test moving it a day in either direction — on routes with two competing demand profiles, small shifts sometimes drop you into a completely different fare bucket.

Compare broadly first, then narrow. Looking at every airline on the same dates at once shows you the actual floor of the market, which a single carrier's website can never do. When two options look close, decide on the total: baggage allowances, seat selection and change fees vary by airline and by fare type, and on a short flight those extras can outweigh the difference in base fare entirely.

Flexibility around the ticket matters too if your plans might move. A slightly higher fare that allows changes can be the cheaper decision in the end, so read what you are buying rather than only what it costs. Pingsme is free to use and refreshes at least daily, which makes a last look before booking a habit worth keeping.