Routes News

Airline EconomicsCalum Wilson

Southwest and Turkish Airlines sign interline to offer one‑ticket transatlantic itineraries via Istanbul from January 2026

Southwest Airlines and Turkish Airlines will implement a limited interline agreement in January 2026 enabling single‑ticket transatlantic journeys between U.S. cities and Istanbul, with through‑checked connections across both carriers’ networks. The move follows recent European partnerships as Southwest expands international distribution.

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Our Airline Routes coverage delivers up-to-the-minute information on new route announcements, destination additions, and updates to existing services across the commercial aviation industry. This resource is essential for tracking the strategic network expansions and adjustments that airlines make in response to shifting market demands and travel patterns.