United Flight UA5644 Deals & Information (2025/2026)

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United Flight 5644 Route Deals From $69

The cheapest prices found with in the last 7 days for return flights were $118 and $69 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Nov 17 - Tue, Dec 9
SDF
Louisville Intl.
ORD
O'Hare Intl.
$118 Roundtrip, found 1 day ago
$118
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov 17 from Louisville Intl. to O'Hare Intl., returning Tue, Dec 9, priced at $118 found 1 day ago
Tue, Dec 16 - Thu, Dec 25
SDF
Louisville Intl.
ORD
O'Hare Intl.
$137 Roundtrip, found 5 days ago
$137
Roundtrip
found 5 days ago
Select United flight, departing Tue, Dec 16 from Louisville Intl. to O'Hare Intl., returning Thu, Dec 25, priced at $137 found 5 days ago
Tue, Oct 21 - Tue, Oct 28
SDF
Louisville Intl.
ORD
O'Hare Intl.
$139 Roundtrip, found 5 days ago
$139
Roundtrip
found 5 days ago
Select United flight, departing Tue, Oct 21 from Louisville Intl. to O'Hare Intl., returning Tue, Oct 28, priced at $139 found 5 days ago
Mon, Nov 17 - Tue, Dec 9
SDF
Louisville Intl.
ORD
O'Hare Intl.
$150 Roundtrip, found 1 day ago
$150
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov 17 from Louisville Intl. to O'Hare Intl., returning Tue, Dec 9, priced at $150 found 1 day ago
Tue, Dec 16 - Thu, Dec 25
SDF
Louisville Intl.
ORD
O'Hare Intl.
$156 Roundtrip, found 5 days ago
$156
Roundtrip
found 5 days ago
Select United flight, departing Tue, Dec 16 from Louisville Intl. to O'Hare Intl., returning Thu, Dec 25, priced at $156 found 5 days ago
Thu, Oct 23 - Sat, Oct 25
SDF
Louisville Intl.
ORD
O'Hare Intl.
$156 Roundtrip, found 6 days ago
$156
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 23 from Louisville Intl. to O'Hare Intl., returning Sat, Oct 25, priced at $156 found 6 days ago
Wed, Feb 11 - Wed, Feb 18
SDF
Louisville Intl.
ORD
O'Hare Intl.
$158 Roundtrip, found 6 days ago
$158
Roundtrip
found 6 days ago
Select United flight, departing Wed, Feb 11 from Louisville Intl. to O'Hare Intl., returning Wed, Feb 18, priced at $158 found 6 days ago
Mon, Dec 15 - Thu, Dec 25
SDF
Louisville Intl.
ORD
O'Hare Intl.
$167 Roundtrip, found 5 days ago
$167
Roundtrip
found 5 days ago
Select United flight, departing Mon, Dec 15 from Louisville Intl. to O'Hare Intl., returning Thu, Dec 25, priced at $167 found 5 days ago
Tue, Oct 21 - Tue, Oct 28
SDF
Louisville Intl.
ORD
O'Hare Intl.
$170 Roundtrip, found 5 days ago
$170
Roundtrip
found 5 days ago
Select United flight, departing Tue, Oct 21 from Louisville Intl. to O'Hare Intl., returning Tue, Oct 28, priced at $170 found 5 days ago
Mon, Oct 27 - Fri, Oct 31
SDF
Louisville Intl.
ORD
O'Hare Intl.
$172 Roundtrip, found 20 hours ago
$172
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Oct 27 from Louisville Intl. to O'Hare Intl., returning Fri, Oct 31, priced at $172 found 20 hours ago