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Seattle skyline with Space Needle and Mount Rainier
SEA
Seattle
Chicago skyline and Lake Michigan
CHI
Chicago

Seattle → Chicago

Frontier Airlines · Round Trip · Nonstop

Save $112 (32% off)
Compared to the typical price of $348
$236$348

per person · round trip

Book This Deal

Flight Details

Cabin
Economy
Departs
Apr 16, 2026
Returns
Apr 23, 2026

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