Cheapest return PHX–ICN flights, September

AirHint found the following cheapest return flights from Phoenix (PHX) to Seoul (ICN) in September 2026 (see full year).

Return flights

21 Sep - 26 Sep Frontier Airlines
20 Sep - 11 Oct Frontier Airlines
01 Sep - 07 Sep Frontier Airlines
01 Sep - 30 Sep Frontier Airlines
25 Sep - 01 Oct WestJet
23 Sep - 26 Sep WestJet
23 Sep - 27 Sep WestJet
24 Sep - 27 Sep WestJet
20 Sep - 17 Oct WestJet
18 Sep - 11 Oct WestJet
18 Sep - 14 Oct China Airlines
22 Sep - 05 Oct Delta
01 Sep - 27 Sep Delta

Also check the deals for one-way flights from Phoenix to Seoul in September.

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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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