United Flight 3599 Deals & Information (2026/2027)

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United Flight 3599 Route Deals From $279

The cheapest prices found with in the last 7 days for return flights were $309 and $279 for one-way flights to Louisville Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Mar 17 - Mon, Mar 22
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$309 Roundtrip, found 2 days ago
$309
Roundtrip
found 2 days ago
Select United flight, departing Wed, Mar 17 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Mar 22, priced at $309 found 2 days ago
Mon, Nov 2 - Mon, Nov 9
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$314 Roundtrip, found 1 hour ago
$314
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Nov 2 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Nov 9, priced at $314 found 1 hour ago
Wed, Mar 17 - Mon, Mar 22
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$319 Roundtrip, found 2 days ago
$319
Roundtrip
found 2 days ago
Select United flight, departing Wed, Mar 17 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Mar 22, priced at $319 found 2 days ago
Mon, Nov 2 - Mon, Nov 9
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$324 Roundtrip, found 1 hour ago
$324
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Nov 2 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Nov 9, priced at $324 found 1 hour ago
Wed, Dec 9 - Sat, Dec 12
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$332 Roundtrip, found 3 days ago
$332
Roundtrip
found 3 days ago
Select United flight, departing Wed, Dec 9 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Dec 12, priced at $332 found 3 days ago
Wed, Jun 23 - Wed, Jun 30
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$332 Roundtrip, found 6 days ago
$332
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jun 23 from Newark Liberty Intl. Airport to Louisville Intl., returning Wed, Jun 30, priced at $332 found 6 days ago
Fri, Nov 13 - Sun, Nov 15
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$333 Roundtrip, found 1 day ago
$333
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 13 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Nov 15, priced at $333 found 1 day ago
Fri, Mar 26 - Sat, Mar 27
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$334 Roundtrip, found 3 days ago
$334
Roundtrip
found 3 days ago
Select United flight, departing Fri, Mar 26 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Mar 27, priced at $334 found 3 days ago
Fri, Mar 26 - Sat, Mar 27
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$335 Roundtrip, found 3 days ago
$335
Roundtrip
found 3 days ago
Select United flight, departing Fri, Mar 26 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Mar 27, priced at $335 found 3 days ago
Mon, Nov 2 - Mon, Nov 9
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$339 Roundtrip, found 1 hour ago
$339
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Nov 2 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Nov 9, priced at $339 found 1 hour ago
Thu, Mar 18 - Mon, Mar 22
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$340 Roundtrip, found 3 days ago
$340
Roundtrip
found 3 days ago
Select United flight, departing Thu, Mar 18 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Mar 22, priced at $340 found 3 days ago
Wed, Dec 9 - Sat, Dec 12
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$342 Roundtrip, found 3 days ago
$342
Roundtrip
found 3 days ago
Select United flight, departing Wed, Dec 9 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Dec 12, priced at $342 found 3 days ago
Tue, Oct 13 - Tue, Oct 20
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$344 Roundtrip, found 3 days ago
$344
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 13 from Newark Liberty Intl. Airport to Louisville Intl., returning Tue, Oct 20, priced at $344 found 3 days ago
Fri, Nov 13 - Sun, Nov 15
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$345 Roundtrip, found 1 day ago
$345
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 13 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Nov 15, priced at $345 found 1 day ago
Thu, Mar 18 - Mon, Mar 22
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$349 Roundtrip, found 3 days ago
$349
Roundtrip
found 3 days ago
Select United flight, departing Thu, Mar 18 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Mar 22, priced at $349 found 3 days ago
Wed, Dec 9 - Sat, Dec 12
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$354 Roundtrip, found 3 days ago
$354
Roundtrip
found 3 days ago
Select United flight, departing Wed, Dec 9 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Dec 12, priced at $354 found 3 days ago

Frequently asked questions

What route does flight number UA3599 take?
UA3599 is used on multiple routes, but the most common is between Raleigh, NC Airport (RDU-Raleigh - Durham Intl.) and ORD. If you're lucky enough to score a direct flight, you'll disembark the plane in 2 hours and 21 minutes. Multi-stop flights can also travel under the same number, as can flights on other routes.
What terminal does UA3599 fly out of?
You'll likely depart from Terminal 2 if you're setting off from Raleigh–Durham Airport. UA3599 serves multiple routes, but the direct flight between Raleigh, NC Airport (RDU-Raleigh - Durham Intl.) and Chicago, IL Airport (ORD-O'Hare Intl.) is the most popular.
What kind of plane is on flight number UA3599?
There's every chance you'll be taking off on an Embraer 175 if you're jetting from Raleigh, NC Airport (RDU-Raleigh - Durham Intl.) to O'Hare Intl. Airport (ORD), a popular route for flight UA3599.
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 UA3599 flight with Travelocity, please visit our Customer Service Portal.