From €152 return per person · cheapest departure 16 Apr
In short: The cheapest return flight from Frankfurt am Main to Barcelona we found costs €152 per person (departure 16 Apr, Air Serbia, 1 stop, 10 h). Prices by departure week range from €152 to €298; the typical price is €190. Source: Google Flights, updated 25 October 2026.
When is it cheapest to fly?
Cheapest: departure 16 Apr · €152 return, per person Most expensive: 25 Dec · €298. Booking the cheapest week saves up to 49 %. Cheapest return fare per person for a departure each week (trips of 7–7 days), economy class. Prices from Google Flights, read weekly; they change daily.
Cheapest departure
💰16 Apr – 23 Apr€152Air Serbia · 1 stop · 10 h · return, per person