Top 10 Busiest Airports in Europe in September 2025, No. 10 Will Surprise You

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The European aviation sector continues to demonstrate resilience and steady growth in 2025, driven by rising passenger demand, increased airline capacity, and expanding international networks.

According to the Airports Council International (ACI), Europe handled more than 2.4 billion passengers in 2024, recovering to 98% of pre-pandemic traffic.

This positive trend has carried into 2025, with Europe’s largest hubs competing closely for the top positions in global rankings.

In September 2025, new data from OAG reveals that Istanbul Airport (IST) has firmly established itself as Europe’s busiest airport, surpassing traditional leaders like London Heathrow (LHR) and Paris Charles de Gaulle (CDG).

Other airports across Germany, Spain, Italy, and the Netherlands also show growth, highlighting the dynamic balance of capacity across the continent.

1. Istanbul Airport (IST)

Istanbul retains its crown as Europe’s busiest airport in September 2025, handling 4.48 million seats. This represents a 5% increase in capacity year-on-year, further strengthening its role as a major international hub.

The airport, home to Turkish Airlines (TK), leverages its geographic advantage as a bridge between Europe, Asia, and Africa.

Since opening in 2018, IST has rapidly expanded with one of the world’s largest terminals and ambitious future runway projects. Its rise reflects Turkey’s growing influence in global aviation.

2. London Heathrow (LHR)

London Heathrow Airport (LHR), long regarded as Europe’s gateway to the world, now ranks second with 4.4 million seats.

Its capacity remains largely unchanged compared to September 2024, but Heathrow continues to play a vital role in transatlantic and long-haul connectivity.

As the primary hub for British Airways (BA) and Virgin Atlantic (VS), LHR maintains a strong presence in both business and leisure travel markets.

However, limited slot availability and infrastructure constraints continue to restrict its ability to expand further.

3. Paris Charles de Gaulle (CDG)

Paris Charles de Gaulle (CDG) ranks third this month, with 3.72 million seats. CDG, the main hub for Air France (AF), retains its position from last year and remains one of Europe’s most important intercontinental gateways.

With direct TGV rail links, multiple runways, and strong connections to Africa and Asia, CDG is central to Europe’s aviation network. While capacity growth has been modest, the airport continues to serve as a preferred hub for transfer passengers traveling between continents.

4. Frankfurt International Airport (FRA)

Frankfurt International (FRA) ranks fourth, handling 3.71 million seats. The airport reported a 3% year on year increase, reflecting stable demand in Western Europe.

Operated by Fraport, FRA remains the primary hub for Lufthansa (LH) and is one of Europe’s leading cargo airports.

5. Amsterdam Schiphol Airport (AMS)

Amsterdam Schiphol (AMS) holds the fifth position with 3.66 million seats, also marking a 3% year on year increase. As the hub for KLM Royal Dutch Airlines (KL), Schiphol benefits from its efficient single terminal design and extensive European network.

Together, these airports highlight Germany and the Netherlands’ continued importance in Europe’s air traffic distribution.

Comparing the facilities across the top 5 airports

Feature Istanbul Airport (IST) London Heathrow (LHR) Paris Charles de Gaulle (CDG) Frankfurt Airport (FRA) Amsterdam Schiphol (AMS)

Runways	5 planned (capacity for 6)	2	4	4	6
Terminals	1 massive terminal	4 passenger terminals	3 main terminals	2 main terminals (T3 under construction)	1 terminal divided into 3 departure halls
Key Facilities	State-of-the-art design, advanced baggage systems, luxury lounges	Heathrow Express rail, premium lounges, extensive shopping	CDGVAL people mover, TGV high-speed rail, VIP lounges	ICE high-speed rail, VIP terminal, cargo hub	Schiphol Plaza shopping, high-speed rail, extensive cargo facilities
Notable Strengths	Rapid growth, strong Europe–Asia connections, designed for future expansion	Strong transatlantic links, major international transfer hub	Major Europe-Africa connections, strong intercontinental network	Leading European cargo hub, intercontinental reach	Efficient single-terminal design, seamless European and global connectivity

Growth in Southern Europe

Southern European airports also feature prominently in the rankings:

Madrid Barajas (MAD): Sixth place with 3.27 million seats, consistent with 2024 levels. As the hub for Iberia (IB), MAD remains the main gateway to Latin America.
Barcelona (BCN): Seventh with 3.01 million seats, driven by Vueling (VY) and other low-cost carriers that serve both intra-European and Mediterranean leisure markets.
Rome Fiumicino (FCO): Eighth with 2.88 million seats, continuing to play a central role in Italy’s connectivity through ITA Airways (AZ).

Comparison of Major South European Airports – September 2025

Feature Madrid Barajas (MAD) Barcelona El Prat (BCN) Rome Fiumicino (FCO)

Runways	4	3	4
Terminals	4 passenger terminals (T1–T4)	2 passenger terminals (T1, T2)	4 passenger terminals
Key Facilities	Extensive duty-free, T4 satellite terminal, high-speed rail	Modern shopping zones, metro link, VIP lounges	Leonardo Express rail, duty-free shopping, modern lounges
Notable Strengths	Major Iberia (IB) hub, strong Europe–Latin America connectivity	Strong short-haul European network, Mediterranean leisure routes	Leading Italian gateway, strong Europe–Americas and Africa links

Munich and Istanbul Sabiha Gokcen

Two airports in the top 10 demonstrated the most impressive year-on-year increases:

Munich (MUC): Ranked ninth with 2.64 million seats, recording a 6% increase compared to last year. As a secondary hub for Lufthansa (LH), MUC continues to expand long-haul services.
Istanbul Sabiha Gokcen (SAW): The standout performer, SAW surged into the top 10 at tenth place with 2.53 million seats, a 23% increase year-on-year. Serving as a hub for Pegasus Airlines (PC) and AnadoluJet, SAW demonstrates the strength of Istanbul’s dual-airport system.

10 Busiest Airports in Europe

Rank Airport Code Airport Name Seats (Total) 2024 Rank

1	IST	Istanbul Airport	4,475,991	2
2	LHR	London Heathrow Apt	4,400,075	1
3	CDG	Paris Charles de Gaulle Apt	3,723,165	3
4	FRA	Frankfurt International Apt	3,711,737	4
5	AMS	Amsterdam Airport	3,660,799	5
6	MAD	Madrid Barajas Apt	3,270,311	6
7	BCN	Barcelona Apt	3,015,558	7
8	FCO	Rome Fiumicino Apt	2,884,740	8
9	MUC	Munich International Airport	2,644,007	9
10	SAW	Istanbul Sabiha Gokcen Apt	2,533,350	13

Source: OAG, September 2025

Bottom Line

The September 2025 data shows that Europe’s aviation sector remains highly competitive, with Istanbul Airport consolidating its leadership and London Heathrow and Paris Charles de Gaulle maintaining strong positions as the busiest airport in Europe.

Frankfurt and Amsterdam continue to expand steadily, while Southern European hubs like Madrid, Barcelona, and Rome ensure regional balance.

Notably, Istanbul Sabiha Gokcen and Munich highlight the fastest growth rates, signaling shifting dynamics within Europe’s aviation landscape.

With demand continuing to rise, Europe’s top airports are likely to see further competition in 2026, especially between Istanbul and London for the number one spot.

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