The Big Three US Carriers Gear Up for a Transatlantic Expansion in 2026
As summer 2026 approaches, the three major U.S. airlines — Delta Air Lines, American Airlines, and United Airlines — are engaged in a fierce competition to expand their transatlantic networks. This long-haul arms race is not just about increasing flight frequencies but also about introducing new routes that could redefine travel patterns and attract premium travelers.
United Airlines: Expanding Its Transatlantic Reach
United Airlines is leading the charge with a significant expansion of its transatlantic network. The airline is planning nearly 3,000 weekly international round-trips for the summer of 2026, along with six new international routes, including four new European destinations. These include:
- Split Airport (Croatia):Flights will begin on April 30 with thrice-weekly service using a Boeing 767-300ER.
- Bari / Palese International Airport (Italy):Starting May 1, this route will offer four times weekly service on a 767-300ER.
- Glasgow International Airport (Scotland):A daily nonstop flight starting May 8, providing an additional connection to Scotland alongside Edinburgh.
- Santiago de Compostela Airport (Spain):Thrice-weekly service beginning in late May, offering the only U.S. nonstop to the region.
These new routes are designed to target unique markets where United can be the sole U.S. carrier offering direct flights, particularly in leisure-heavy Southern Europe. The airline’s strategy emphasizes serving destinations that appeal to premium travelers looking for new experiences.
Delta Air Lines: Deepening Coastal Gateways
Delta Air Lines has introduced seven new long-haul routes for summer 2026, focusing on deepening its coastal U.S. gateways and expanding into premium leisure travel to Europe. The airline’s new routes include:
- Madrid and Nice from Boston Logan International Airport
- Rome and Barcelona from Seattle-Tacoma International Airport
The most notable additions come from New York JFK Airport, where Delta is launching three new routes based on a “Route Race” where SkyMiles members and employees voted on the next European destinations. These include:
- Olbia (Sardinia):Starting in May, this route offers access to Sardinia’s Costa Smeralda.
- Malta:Starting in early June, this route provides access to UNESCO-listed Valletta and crystal-clear waters.
- Porto (Portugal):Positioned as a gateway to Portugal’s food-and-wine culture.
Paul Baldoni, Senior Vice President of Network Planning at Delta, emphasized that these routes were chosen based on customer input, ensuring that the network caters to both loyal customers and those seeking unique travel experiences.
American Airlines: Entering the Transatlantic Arena
American Airlines is also making its mark with six new long-haul routes for summer 2026, spanning both sides of the Atlantic and into South America. Key highlights include:
- Athens and Zurich from Dallas/Fort Worth International Airport
- Buenos Aires extension from DFW
- Milan from Miami International Airport
However, the two most anticipated routes are from Philadelphia International Airport:
- Prague:Launching on May 21 with a Boeing 787-8, this route targets Central Europe’s most popular leisure market.
- Budapest:Also launching on May 21, this route is marketed as the only nonstop from the U.S. to Hungary, appealing to premium travelers.
American is promoting Prague and Budapest as a combined destination, allowing travelers to fly into one city and depart from the other, creating an ideal itinerary for a Central European bucket list trip.
Conclusion
The 2026 summer season promises to be a transformative period for transatlantic air travel, with each of the Big Three carriers introducing new routes that cater to a wide range of traveler preferences. From unique European destinations to expanded connections across the Atlantic, these developments are set to reshape the landscape of long-haul travel. Whether it’s exploring the Dalmatian Coast, savoring the flavors of Sardinia, or experiencing the cultural richness of Prague and Budapest, the options for travelers are more diverse than ever.
