OAG has revealed the international flights to, from and within Europe with the most scheduled capacity for summer 2025, with Dublin-Heathrow in sixth place.
- FCO-MAD Rome Fiumicino Apt – Madrid Adolfo Suarez-Barajas Apt: 1,322,042 seats
- LIS-MAD Lisbon – Madrid Adolfo Suarez-Barajas Apt – 1,287,024 seats
- CPH-OSL Copenhagen Kastrup Apt – Oslo Gardermoen Airport – 1,266,916 seats
- DUS-PMI Duesseldorf International Airport – Palma de Mallorca – 1,258,485 seats
- JFK-LHR New York J F Kennedy International Apt – London Heathrow Apt – 1,229,245 seats
- DUB-LHR Dublin (IE) – London Heathrow Apt – 1,220,720 seats
- AMS-BCN Amsterdam – Barcelona Apt (ES) – 1,211,856 seats
- BCN-FCO Barcelona Apt (ES) – Rome Fiumicino Apt – 1,191,798 seats
- ECN-SAW Ercan – Istanbul Sabiha Gokcen Apt – 1,185,380 seats
- ARN-CPH Stockholm Arlanda Apt – Copenhagen Kastrup Apt – 1,168,296 seats
