AirHint found the following cheapest return flights from Salt Lake City (SLC) to Seoul (ICN) in September 2025 (see full year).

Return flights

11 Sep - 18 Sep	Frontier Airlines
16 Sep - 19 Sep	WestJet
06 Sep - 19 Sep	Frontier Airlines
09 Sep - 16 Sep	WestJet
10 Sep - 17 Sep	Hawaiian Airlines
04 Sep - 18 Sep	Delta	direct
03 Sep - 18 Sep	Delta	direct
08 Sep - 22 Sep	Delta	direct
11 Sep - 18 Sep	Delta	direct
04 Sep - 19 Sep	Delta	direct

Also check the deals for one-way flights from Salt Lake City to Seoul in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Salt Lake City to Seoul in September from 746€

Return flights