Start with the 05:00 FlixBus bus from Adana to Tarsus, about 30 min. Transfer in Tarsus, then take the 08:15 Pegasus Airlines flight on to Istanbul (1h 35m). Transfer in Istanbul, then take the 13:40 Pegasus Airlines flight on to Helsinki, connecting in London (9h 45m). You arrive in Helsinki around 23:25. In total it's roughly EUR 316 over 18h 25m, 3 transfers.
Opens Omio — enter your date to compare trains and buses for this route; the price is finalised at checkout.
Kiwi opens sorted by price, so your flight (2097, 08:15) is near the top. Final fare is confirmed at checkout.
Kiwi opens sorted by price, cheapest first. Final fare is confirmed at checkout.
Fly into Adana, then continue to Helsinki by bus (30 min) — routing via Adana keeps the trip simple. Bus (FlixBus, 30min) + Flight (PC, 1h 35min) via Tarsus + Flight (Pegasus Airlines, 9h 45min) via Istanbul.