Cascade to Istanbul (SEZ-IST): nonstop flights and award space

Turkish Airlines flies the SEZ to IST nonstop about 5 times a week. In the timetable below it flies as TK 739, scheduled at 8h 20m for the 3,578 miles. 2LNR tracks award seats on Turkish Airlines across every SEZ to IST date, so you can see whether a seat exists before you move points.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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5
Flights a week, 4-week average
8h 20m
Scheduled flight time
3,578 mi
Nonstop distance
Free
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Cascade to Istanbul flight schedule

Scheduled nonstop departures for SEZ to IST starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Cascade (SEZ) to Istanbul (IST)
Date Flight Airline Departs SEZ Arrives IST Duration Aircraft
TK 739Turkish Airlines07:4015:008h 20mAirbus A330-300
TK 739Turkish Airlines09:1516:358h 20mAirbus A330-300
TK 739Turkish Airlines09:1516:358h 20mAirbus A330-300
TK 739Turkish Airlines09:1516:358h 20mAirbus A330-300
TK 739Turkish Airlines09:1516:358h 20mAirbus A330-300
TK 739Turkish Airlines09:1516:358h 20mAirbus A330-300
TK 739Turkish Airlines09:1516:358h 20mAirbus A330-300

Showing all 7 scheduled SEZ to IST departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every SEZ to IST date on the interactive map

Aircraft on the Cascade to Istanbul nonstop

Turkish Airlines flies the Airbus A330-300 on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Award seats on SEZ to IST departures

2LNR tracks award seats on Turkish Airlines, date by date. Open the calendar for Cascade to Istanbul to see whether a seat exists before you move points, the next 14 days free on every product and the full horizon on Pro.

Turkish Airlines award space was open on 3 of the 8 Cascade to Istanbul departure dates from October 19 to November 1 that 2LNR checked in the 7 days to October 19, 2026.

See real availability

Award seats by date on the SEZ to IST departures 2LNR tracks, checked against live inventory so you know what's open before you book.

Set an alert

Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking.

Plan on the map

See SEZ to IST on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Cascade to Istanbul nonstop

Carriers operating SEZ to IST nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show award space by date.

See SEZ to IST on the interactive map →

Frequently asked questions about SEZ to IST

How long is the flight from Cascade (SEZ) to Istanbul (IST)?
TK 739 is scheduled at 8h 20m from Cascade (SEZ) to Istanbul (IST) on every departure in the schedule table on this page. The nonstop covers about 3,578 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from SEZ to IST?
Turkish Airlines is currently the only airline flying SEZ to IST nonstop. 2LNR tracks award seats on Turkish Airlines.
How many flights a week are there from SEZ to IST?
About 5 nonstop flights a week run between Cascade (SEZ) and Istanbul (IST) in the current schedule, operated by Turkish Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from SEZ to IST depart?
Scheduled SEZ to IST nonstops in the next 7 days with service leave between 07:40 and 09:15, local time at Cascade. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate SEZ to IST nonstop?
Turkish Airlines flies TK 739 nonstop from Cascade (SEZ) to Istanbul (IST), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft.
How do I check award availability on SEZ to IST?
Open the SEZ to IST route on the interactive map or the matrix to see award seats by date on Turkish Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

See SEZ to IST award space by date

See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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