Southwest Airlines has announced a groundbreaking expansion into transatlantic travel, unveiling 12 new nonstop routes from major US hubs to popular European destinations starting June 2026.

New Route Details

The Dallas-based carrier will operate flights from cities including Dallas, Chicago, Denver, and Baltimore to destinations across Europe. Key routes include Dallas to London Gatwick, Chicago Midway to Dublin, Denver to Barcelona, and Baltimore to Lisbon.

Fares start at an introductory rate of 99 one-way, significantly undercutting legacy carriers on the same routes. Southwest CEO Bob Jordan called the expansion a 'once-in-a-generation opportunity' to bring low-cost travel to the transatlantic market.

What Travelers Need to Know

Industry analysts predict this move will force legacy carriers to lower fares on competing routes by 15-25%. Delta and United have already begun adjusting summer pricing on overlapping routes.

Booking and Availability

Tickets go on sale April 15, 2026, through the Southwest website and app. The airline recommends booking early as introductory fares are limited. Frequent flyers with A-List status will receive priority boarding on international flights.

Travel experts suggest this expansion could reshape the transatlantic budget travel landscape, making European vacations accessible to millions of Americans who previously found overseas flights prohibitively expensive.