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Delta Air Lines is one of the US “Big 3” airlines and has built a large international network over the years. The airline flies to more than 100 destinations across 65 countries on six continents. However, its international network has been changing. Delta has been dropping some thinner routes and reducing its presence on certain ultra-long-haul services as it adds more flights to leisure markets.
Simple Flying looked at Delta’s international schedule between January 2025 and September 2026 and compared it with the airline’s planned schedule from October onward. The analysis found that Delta has ended or is set to end around 17 international routes.
Delta Cut Two London Routes And Not Returning
These routes are spread across Europe, the Caribbean, Mexico and Central America, South America, and Oceania. In fact, two of the routes are to London. The first is Delta’s seasonal service between New York John F. Kennedy International Airport (JFK) and London Gatwick Airport (LGW). The airline operated the route with a Boeing 767-300ER and ended service on September 7, 2025.
It did not return for the 2026 summer season, as Delta has focused its London operation on Heathrow, where it has a much larger transatlantic presence. The aircraft used on the Gatwick service was then available for other European routes, such as Porto, Malta and Sardinia. Delta also dropped its 
Orlando International Airport (MCO) to 
London Heathrow Airport (LHR) service.
The SkyTeam Alliance member operated the route in partnership with Virgin Atlantic from October 2024 to March 2025, mainly four times a week on an Airbus A330-900. However, the service struggled to fill seats. US Department of Transportation (DoT) data shows that it carried 30,325 round-trip passengers and had a 64% seat load factor. Given those numbers, it is no surprise that Delta decided to cut the route after just a few months of operation.
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Delta Ended Its 34-Year New York JFK-Brussels Route This Year
Delta has also ended its New York JFK to Brussels (BRU) route after 34 years of operation. The airline operated its final flight on the route on January 5, 2026, bringing an end to a service that had been running since 1991. With Delta no longer serving the route, Brussels Airlines is now the only airline offering a nonstop connection between Brussels and New York JFK. The Lufthansa Group carrier operates almost daily service on the route with an Airbus A330-300.
The decision is part of a wider shift in SkyTeam Alliance members’ Brussels network toward Atlanta. The airline reinstated its 
Atlanta (ATL)-Brussels (BRU) service in June 2025 after a five-year suspension during the COVID-19 pandemic. Delta currently operates the route daily, although the schedule is due to drop to four flights per week for the winter season. The airline said the change would “better align with customer demand,” giving it access to connecting passengers from across the US rather than relying mainly on traffic from New York.
Hub | Destination(s) (End month) | Notes |
|---|---|---|
Atlanta (ATL) |
| Was the only service from the US; Weak passenger demand – started strong with daily winter frequencies, but then passenger volume dropped severely; Delta then had to slash the route down to a single weekly frequency |
Boston (BOS) |
| |
Detroit (DTW) |
| Tulum bubble bursting; severe industry over-saturation. |
New York JFK (JFK) |
| |
Los Angeles (LAX) |
| Network optimization; shifted capacity from low-yield international lines to domestic hub routes |
Orlando (MCO) |
| |
Minneapolis (MSP) |
| Leisure market over-saturation and intense low-cost carrier (Sun Country) competition; consolidated traffic through central hubs |
Indeed, the airline faces stiff competition from its rivals. 
United Airlines offers service between 
Newark Liberty International Airport (EWR) and Brussels, while Brussels Airlines has its own JFK operation. The decision also follows two other European route cuts from JFK involving Lufthansa Group hubs: Delta ended its New York-Munich service in 2024 and dropped New York-Geneva in October 2025. The three cuts suggest that Delta is reducing its presence at JFK on routes where Star Alliance carriers have a strong position.
Delta’s Boston-São Paulo Service Lasted Just Two Months
The Boston-São Paulo Guarulhos route was probably the shortest-lived service in the period analyzed. Delta ended the route in March 2025, just two months after launching it in January. The route was an unusual one for Delta because it temporarily replaced its joint venture partner LATAM, which has operated the service since 2018. So, Delta was never expected to operate the route for very long.
It operated the final flight on the route on March 27; LATAM returned to the route on March 31, 2025. Delta operated three flights a week with an Airbus A330-300, carrying 15,378 passengers and filling 80.4% of its available seats, according to US DOT data. LATAM had carried 20,060 passengers on the same route between January and March 2024, with an 86.7% seat load factor despite using higher-capacity aircraft.
