United AirlinesDepart18:09
Wed, Dec 23STL → IST
15h 16m · 2 stops
$705one way, per person
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- Cheapest fare
- $705
- Cheapest month
- December
- Direct flights
- Not recently
- Quickest trip
- 15h 16m
United Airlines · Wed, Dec 23
from $705
Usually 1+ stop
9,230 km
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Cheapest month to fly from St Louis to Istanbul
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
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Getting around
About flights from St Louis to Istanbul
St Louis (STL) and Istanbul (IST) are about 9,230 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 15h 16m. Over the next few months, one-way fares start from $705, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from St Louis to Istanbul?
The cheapest one-way fare we've seen recently is $705 with United Airlines, departing Wednesday, December 23, 2026.
What is the cheapest month to fly from St Louis to Istanbul?
December 2026 currently has the lowest fares, from $705 one way.
Are there direct flights from St Louis to Istanbul?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from St Louis to Istanbul?
The quickest journey we've seen takes about 15h 16m. St Louis and Istanbul are around 9,230 km apart.
Which airlines fly from St Louis to Istanbul?
Recent fares on this route were with United Airlines.
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