Właśnie wyszukałem WAW- Chania i mi napisał, że kod nieważny

The offer is valid for all direct flights from all international destinations to Athens and Thessaloniki.
Bookings until 14/07/2021
Travel between 01/09/2021 – 31/12/2021
Terms and Conditions:
The offer is valid for all direct flights to Athens and Thessaloniki from/to all international destinations - for one way and return flights. The offer is valid for flights operated by AEGEAN and Olympic Air and bookings until 14/07/2021 and for travel between 01/09/2021 - 31/12/2021. The 40% discount is applied on all flights between 01/09/2021 – 31/10/2021. The 50% discount is applied on all flights between 01/11/2021 – 31/12/2021. The 40% & 50% discounts are applied on all fares and fuel surcharges. Fares and fuel surcharges shown on the reservation system are already reduced by 40% & 50%. In case of ticket cancellation refund policy is applied depending on fare class. Discount does not apply on all taxes. The offer applies to Economy class tickets. The promo ends on 14/07/2021 at 23:59 Greek time.

Book your seat now and travel to your favourite Greek destinations from €21!

The offer is valid for all direct domestic flights.

Bookings until 29/08/2021
Travel between 15/09/2021 - 22/12/2021

Terms & Conditions:
The offer is valid for all direct domestic flights. The offer is valid for bookings until 29/08/2021 and travel from 15/09/2021 until 22/12/2021 for flights operated by AEGEAN and Olympic Air. The lowest available fare for flights to Athens is €21 and €41 for flights from Athens. The lowest available fare for flights from/to Thessaloniki starts from €24. The lowest available price for below routes is different. From/to Athens: Karpathos, Ikaria, Naxos, Kithira, Milos, Paros, Skyros, Zakynthos, Leros, Sitia, Skiathos, from/to Thessaloniki: Mykonos, Santorini, Kos, Rhodes, Mytilene, Skiathos, Chania, Heraklion, Paros, Samos, Kalamata and Chios and the route from/to Rhodes - Kastellorizo. In case of ticket cancellation refund policy is applied depending on fare category. Ticket changes are permitted – relevant charges depend on fare category. The offer is valid for Economy Class fares. Payment card fees do not apply for transactions with any debit or credit card. The promo ends on 29/08/2021 at 23:59 Greek time.

City break in Thessaloniki with up to 40% off!

The offer is valid for all direct and connecting flights to Thessaloniki from/to all international destinations.
Bookings until 22/09/2021
Travel between 01/10/2021 – 27/03/2022

Terms & Conditions
The offer is valid for all direct and connecting flights to Thessaloniki from/to all international destinations - for one way and return flights. The offer is valid for flights operated by AEGEAN and Olympic Air, for bookings made until 22/09/2021 and for travel from 01/10/2021 until 27/03/2022. The 30% discount is applied to all flights between 01/10/2021 – 10/01/2022. The 40% discount is applied to all flights between 11/01/2022 – 27/03/2022. The 30% & 40% discount is applied on all fares and fuel surcharges. Fares and fuel surcharges shown on the reservation system are already reduced by 30% & 40%. In case of ticket cancellation refund policy is applied depending on fare class. Discount does not apply on all taxes. The offer applies to Economy class tickets. The promo ends on 22/09/2021 at 23:59 Greek time.

Terms & Conditions:
The offer is valid for all direct flights for all network. The offer is valid for bookings from 26/10/2021 at 12:00 pm until 27/10/2021 at 11:59 am Greek time and travel from 01/11/2021 until 30/11/2021 for flights operated by AEGEAN and Olympic Air. The discount applies on all fare and fuel surcharges. Fare and fuel surcharges shown on the reservation system are already reduced by 50%. In case of ticket cancellation refund policy is applied depending on fare category. Ticket changes are permitted – relevant charges depend on fare category. Valid for Economy Class. The promo ends on 27/10/2021 at 11:59 am Greek time.

The offer is valid for all direct flights to Greece from/to all international destinations.

Bookings until 08/11/2021
Travel between 28/03/2022 – 30/10/2022

Terms and Conditions:
The offer is valid for all direct flights to Greece from/to all international destinations. The offer is valid for bookings between 02/11/2021 - 08/11/2021 and travel from 28/03/2022 until 30/10/2022 for flights operated by AEGEAN. 30% discount is applied to all flights between 28/03/2022 – 30/06/2022. 20% discount is applied to all flights between 01/07/2022 – 31/08/2022. 30% discount is applied to all flights between 01/09/2022 – 30/10/2022. All discounts are applied on all fares and fuel surcharges. Fares and fuel surcharges shown on the reservation system are already reduced by 20% and 30% accordingly. In case of ticket cancellation refund policy is applied depending on fare category. Ticket changes are permitted – relevant charges depend on fare category. The offer is valid for Economy Class fares. The promo ends on 08/11/2021 at 23:59 Greek time.

Book until 29/11/2021
Travel between 14/01/2022 – 29/10/2022