
United Flight UA3503 Deals & Information (2025/2026)
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United Flight 3503 Route Deals From $70
The cheapest prices found with in the last 7 days for return flights were $137 and $70 for one-way flights to Louisville Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$137 Roundtrip, found 5 days ago
$137
Roundtrip
found 5 days ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$147 Roundtrip, found 12 hours ago
$147
Roundtrip
found 12 hours ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$159 Roundtrip, found 12 hours ago
$159
Roundtrip
found 12 hours ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$163 Roundtrip, found 12 hours ago
$163
Roundtrip
found 12 hours ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$165 Roundtrip, found 4 days ago
$165
Roundtrip
found 4 days ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$166 Roundtrip, found 4 days ago
$166
Roundtrip
found 4 days ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$173 Roundtrip, found 5 days ago
$173
Roundtrip
found 5 days ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$175 Roundtrip, found 4 days ago
$175
Roundtrip
found 4 days ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$190 Roundtrip, found 12 hours ago
$190
Roundtrip
found 12 hours ago
IAD
Washington Dulles Intl.
SDF
Louisville Intl.
$192 Roundtrip, found 14 hours ago
$192
Roundtrip
found 14 hours ago