Delta Brings Back Longest Domestic Flight, But Even Longer Flights Depart U.S.

Boston to Honolulu route returns, but other international flights from U.S. airports are even longer.

Published on Feb. 19, 2026

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Delta Air Lines has announced it will bring back its Boston to Honolulu flight route next winter, making it the longest domestic flight in the United States at 5,095 miles. However, there are several international flights departing from U.S. airports that are even longer, with the longest being flights from the U.S. to Singapore.

Why it matters

The return of Delta's Boston-Honolulu route highlights the continued demand for long-haul domestic flights within the U.S., even as international travel has rebounded. While the Boston-Honolulu flight will be the longest domestic departure, the data shows there are several ultra-long-haul international flights from U.S. airports that eclipse it in total distance.

The details

Delta's Boston-Honolulu flight is scheduled to take 11 hours and 40 minutes to cover the 5,095-mile distance. However, there are several international flights from U.S. airports that are even longer, including flights from Los Angeles to Singapore (8,770 miles), San Francisco to Singapore (8,446 miles), and Honolulu to Manila (5,451 miles). The longest flight overall from a U.S. airport is the 9,534-mile trip from Newark to Singapore.

  • Delta will reintroduce the Boston-Honolulu route next winter.

The players

Delta Air Lines

A major U.S. airline that is bringing back its Boston-Honolulu route, which will be the longest domestic flight in the country.

Cirium

An aviation data analytics company that provided the information on the longest flights departing from U.S. airports.

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The takeaway

While the return of Delta's Boston-Honolulu flight will be the longest domestic flight in the U.S., the data shows there are several international flights departing from American airports that cover even greater distances, highlighting the continued growth of ultra-long-haul travel options for passengers.