Redefining Global Connectivity: Istanbul Sees Massive Surge in New Routes and Frequency Increases for H2 2026

Driven by Turkish Airlines, Pegasus Airlines, and AJet, Istanbul is cementing its position as the ultimate global aviation hub with a massive slate of new routes, strategic frequency upgrades, and calculated network adjustments launching between June and December 2026.

Quick Summary

• New Routes Launching: Direct flights are being added from Istanbul to Oral, Kazakhstan (Pegasus), Stockholm, Sweden (AJet), and Mahé, Seychelles (Turkish Airlines).
• South America Upgrade: Turkish Airlines is upgrading its São Paulo-Santiago-Istanbul route to a daily service utilizing Airbus A350-900 aircraft starting June 16, 2026.
• Frequency Boosts: Air Transat is adding flights from Toronto, while Turkish Airlines ramps up service to Lisbon (3x daily) and Sydney (6x weekly).
• Strategic Cuts: To optimize capacity, Turkish Airlines is temporarily suspending 18 international destinations, including Havana and Kinshasa, while AJet trims 5% of its capacity in May/June.

Istanbul’s dominance in global aviation is accelerating. Between June and December 2026, the city's two primary airports—Istanbul Airport (IST) and Sabiha Gökçen Airport (SAW)—will see a massive influx of new international traffic.

Spearheaded by Turkey's big three—Turkish Airlines, Pegasus Airlines, and AJet—this aggressive expansion strategy mixes highly anticipated direct links to emerging global markets with significant frequency boosts to established mega-cities.

NEW ROUTES LAUNCHING IN SUMMER 2026

To capitalize on the booming international travel market, airlines are rolling out highly strategic point-to-point connections starting early this summer.

• AJet Connects Stockholm to Istanbul (SAW): Launching on June 2, 2026, AJet will inaugurate a highly anticipated direct flight linking Arlanda Airport in Stockholm with Istanbul’s Sabiha Gökçen. This route is expected to heavily facilitate thriving business and tourism exchanges between Sweden and Turkey.
• Pegasus Airlines Debuts Kazakhstan Route: On June 4, 2026, Pegasus will launch a new direct route from Oral, Kazakhstan, to Istanbul (SAW). Operating twice weekly on Thursdays and Sundays, this route caters directly to rising business traffic between the two nations.
• Turkish Airlines Upgrades Santiago Service: Starting June 16, 2026, Turkish Airlines is dramatically expanding its South American footprint. The airline will increase its São Paulo-Santiago-Istanbul route to a daily service, utilizing its flagship Airbus A350-900 aircraft.
• New Seychelles Route: Still in the finalization phase, Turkish Airlines will launch a brand new seasonal route connecting Istanbul (IST) directly to Mahé, Seychelles in 2026, tapping into the high-yield luxury tourism market.

FREQUENCY UPGRADES: TORONTO, SYDNEY, AND LISBON

In addition to expanding the map, airlines are significantly densifying their existing networks to meet soaring passenger demand.

Lisbon Hits Three Times Daily: Driven by intense leisure and business demand, Turkish Airlines is ramping up its Lisbon-Istanbul flights to 21 per week (operating three times daily) in 2026.

Air Transat Boosts Toronto Capacity: Responding to heavy North American demand, Air Transat is increasing its Toronto-Istanbul (IST) frequency from two to three flights per week starting in June 2026.

Sydney Connections Accelerate: Australia remains a critical growth market. Starting in October 2026, Turkish Airlines will increase its Istanbul-Sydney service (flown via Kuala Lumpur) to six weekly flights. Furthermore, pending the delivery of new ultra-long-haul aircraft, the carrier expects to launch highly anticipated non-stop flights between Istanbul and Sydney in late 2026.

STRATEGIC NETWORK ADJUSTMENTS: CUTTING TO GROW

While the overall narrative is expansion, both Turkish Airlines and AJet are making ruthless, calculated network adjustments to ensure maximum profitability during the peak summer season.

Turkish Airlines Cuts 18 Destinations: In a major strategic realignment, the flag carrier will suspend operations to 18 international destinations during the second half of 2026. Cities being temporarily removed from the schedule include Aqaba, Billund, Havana, Kinshasa, and several locations in Iran. This move allows the airline to instantly redeploy high-value aircraft to incredibly lucrative summer trunk routes.

AJet Trims Capacity: AJet is executing a similar optimization maneuver, reducing its capacity by approximately 5% during May and June 2026. This realignment involves the cancellation of over 200 departures, allowing the airline to streamline operations and improve dispatch reliability before the peak summer rush.

THE OUTLOOK FOR 2026

The second half of 2026 promises to be a transformative period for Istanbul’s air travel infrastructure. By simultaneously launching aggressive new routes to Scandinavia and South America, while ruthlessly cutting underperforming destinations to optimize fleet deployment, Turkish Airlines, Pegasus, and AJet are ensuring that Istanbul remains the absolute epicenter of global aviation.

KEY TAKEAWAYS

• AJet launches direct Stockholm to Istanbul flights on June 2, 2026.
• Pegasus begins twice-weekly flights from Oral, Kazakhstan to Istanbul on June 4, 2026.
• Turkish Airlines upgrades its Santiago, Chile route to a daily A350-900 service on June 16, 2026.
• Turkish Airlines expands Lisbon flights to 21x weekly and Sydney flights to 6x weekly (via Kuala Lumpur).
• Air Transat expands its Toronto-Istanbul service to 3x weekly.
• Turkish Airlines is suspending 18 international routes (including Havana and Kinshasa) to redeploy aircraft to high-demand summer routes.