- Denver (DEN) Louisville (SDF)
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2–5 non-stop flights per dayat least 2h 25minfrom $211 - Chicago (CHI) Louisville (SDF)
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13–25 non-stop flights per dayat least 1h 10minfrom $207 - Chicago O'Hare (ORD) Louisville (SDF)
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13–22 non-stop flights per dayat least 1h 10minfrom $207 - Atlanta (ATL) Louisville (SDF)
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9–15 non-stop flights per dayat least 1h 14minfrom $88 - Washington DC (DCA) Louisville (SDF)
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3–4 non-stop flights per dayat least 1h 43minfrom $207 - Houston-Hobby (HOU) Louisville (SDF)
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1–2 non-stop flights per dayat least 2h 5minfrom $351 - Cleveland (CLE) Louisville (SDF)
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only flights with stopoverat least 4h 4minfrom $257 - Sacramento (SMF) Louisville (SDF)
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only flights with stopoverat least 9h 13minfrom $451 - Spokane (GEG) Louisville (SDF)
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only flights with stopoverat least 6h 6minfrom $371 - Akron (CAK) Louisville (SDF)
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only flights with stopoverat least 3h 36minfrom $239