Aktau is a provincial town and has no airport. That is why to get to Riga, you need to reach a larger city close to Aktau first, from there you'll be able to fly.
Aktau: larger cities nearby
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Aktau: airports nearby
Flight schedule Aktau — Riga
It is impossible to buy direct flights Aktau — Riga, because the former does not have an airport. However, pretty close the following airports are to be found:
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