Up To 14h 10m: The 10 Longest Transatlantic US-Europe Flights In 2025
By Dr. James Pearson - Journalist | Simple Flying
In 2025, a typical scheduled passenger flight from the US to Europe will cover 3,704 nautical miles (6,860 km). That finding is based on examining every airline, route, and flight between January and October using Cirium Diio information.
The current shortest airport pair is Boston-Terceira, at just 1,998 nautical miles (3,700 km). It is served weekly year-round on Azores Airlines' A321neos. But what about the longest routes?
In 2025, a typical scheduled passenger flight from the US to Europe will cover 3,704 nautical miles (6,860 km). That finding is based on examining every airline, route, and flight between January and October using Cirium Diio information.
The current shortest airport pair is Boston-Terceira, at just 1,998 nautical miles (3,700 km). It is served weekly year-round on Azores Airlines' A321neos. But what about the longest routes?
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US-Europe: the 10 longest routes
The following table summarizes them. They primarily involve the periphery of Europe and the US West Coast. The leading market remains Turkish Airlines between Istanbul Airport and Los Angeles, which will have a record 17 weekly flights this peak summer. More on this later.
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Given Air France's Nice-Los Angeles service only has one roundtrip this year, it seems a little unfair to include it at the expense of a regular operation. Level's Barcelona-Los Angeles link would have made the cut if it had not been included.
Istanbul is on the European side of the Bosporus, so it is included. The information in the table is as of January 7 and may change. The great circle is used for distances, and real-world operations could change the order. The max block times change the order somewhat.
Turkish Airlines to Los Angeles: 17 weekly
The Star Alliance member has served Los Angeles since March 2011. The US Department of Transportation data shows that it transported almost 3.2 million passengers until September 2024.
It has filed an average of 83% of seats. However, it was 86% in the first nine months of last year, pulled down by February (78%). Hence, it is unsurprising that February will have its lowest frequency, reducing capacity and helping with loads, fares, and yields.
While Los Angeles flights have not previously been above double daily, they will jump to 17 weekly in July for the peak summer. The schedule is as follows, with all times local: