STL to KOA from $454 in economy – flightdeals.net

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United Airlines

UAUnited Airlines

Round Trip•Economy

Lambert-Saint Louis International Airport

St. Louis, United States

Kona International Airport

Kailua-Kona, United States

$709 USD

-36%$454 USD

Verified about 1 month ago

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$454 1$460 2$460 3$620 4$622 5$505 6$460 7$521 8$520 9$460 10$499 11$499 12$499 13$516 14$460 15$460 16$460 17$506 18$505 19$520 20$522 21$454 22$478 23$516 24$505 25$572 26$550 27$561 28$562 29$499 30$666 1$801 2$823 3$626 4$671

Rare Availability

5% of dates checked are available within 10% of the lowest price

Monday, September 21st, 2026

5 round-trip options

Returning

Sat, Sep 26, 2026•5 Day Trip

$505 USD

Returning

Sun, Sep 27, 2026•6 Day Trip

$563 USD

Returning

Tue, Sep 29, 2026•8 Day Trip

$454 USD

Returning

Fri, Oct 2, 2026•11 Day Trip

$558 USD

Returning

Sat, Oct 3, 2026•12 Day Trip

$505 USD