United Flight 5521 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 5521 Route Deals From $61

The cheapest prices found with in the last 7 days for return flights were $137 and $61 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jan 31 - Thu, Feb 5
SDF
Louisville Intl.
ORD
O'Hare Intl.
$137 Roundtrip, found 1 day ago
$137
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jan 31 from Louisville Intl. to O'Hare Intl., returning Thu, Feb 5, priced at $137 found 1 day ago
Tue, Dec 16 - Thu, Dec 25
SDF
Louisville Intl.
ORD
O'Hare Intl.
$137 Roundtrip, found 4 days ago
$137
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 16 from Louisville Intl. to O'Hare Intl., returning Thu, Dec 25, priced at $137 found 4 days ago
Tue, Oct 21 - Tue, Oct 28
SDF
Louisville Intl.
ORD
O'Hare Intl.
$139 Roundtrip, found 3 days ago
$139
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 21 from Louisville Intl. to O'Hare Intl., returning Tue, Oct 28, priced at $139 found 3 days ago
Tue, Dec 16 - Thu, Dec 25
SDF
Louisville Intl.
ORD
O'Hare Intl.
$156 Roundtrip, found 4 days ago
$156
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 16 from Louisville Intl. to O'Hare Intl., returning Thu, Dec 25, priced at $156 found 4 days ago
Thu, Oct 23 - Sat, Oct 25
SDF
Louisville Intl.
ORD
O'Hare Intl.
$156 Roundtrip, found 4 days ago
$156
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 23 from Louisville Intl. to O'Hare Intl., returning Sat, Oct 25, priced at $156 found 4 days ago
Wed, Feb 11 - Wed, Feb 18
SDF
Louisville Intl.
ORD
O'Hare Intl.
$158 Roundtrip, found 4 days ago
$158
Roundtrip
found 4 days ago
Select United flight, departing Wed, Feb 11 from Louisville Intl. to O'Hare Intl., returning Wed, Feb 18, priced at $158 found 4 days ago
Mon, Dec 15 - Thu, Dec 25
SDF
Louisville Intl.
ORD
O'Hare Intl.
$167 Roundtrip, found 4 days ago
$167
Roundtrip
found 4 days ago
Select United flight, departing Mon, Dec 15 from Louisville Intl. to O'Hare Intl., returning Thu, Dec 25, priced at $167 found 4 days ago
Tue, Oct 21 - Tue, Oct 28
SDF
Louisville Intl.
ORD
O'Hare Intl.
$170 Roundtrip, found 3 days ago
$170
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 21 from Louisville Intl. to O'Hare Intl., returning Tue, Oct 28, priced at $170 found 3 days ago
Sat, Dec 13 - Wed, Dec 24
SDF
Louisville Intl.
ORD
O'Hare Intl.
$173 Roundtrip, found 4 days ago
$173
Roundtrip
found 4 days ago
Select United flight, departing Sat, Dec 13 from Louisville Intl. to O'Hare Intl., returning Wed, Dec 24, priced at $173 found 4 days ago
Sat, Dec 13 - Wed, Dec 24
SDF
Louisville Intl.
ORD
O'Hare Intl.
$181 Roundtrip, found 4 days ago
$181
Roundtrip
found 4 days ago
Select United flight, departing Sat, Dec 13 from Louisville Intl. to O'Hare Intl., returning Wed, Dec 24, priced at $181 found 4 days ago

Frequently asked questions

What route does flight number UA5521 take?
You'll be arriving into Nashville, TN Airport (BNA-Nashville Intl.) from Chicago, IL Airport (ORD-O'Hare Intl.) if you're traveling on flight number UA5521. You'll be in the sky for 1 hour and 38 minutes during this trip. It's also good to note that the flight conveniently operates non-stop.
What terminal does UA5521 fly out of?
UA5521 runs between O'Hare Airport and BNA, and those taking this flight generally jet off from Terminal 2.
What kind of plane is on flight number UA5521?
The Embraer 175 is the kind of plane most often used for flight UA5521. This flight almost always sets off from O'Hare Intl. Airport (ORD) and lands at BNA.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA5521 flight with Travelocity, please visit our Customer Service Portal.