United Flight 3599 Deals & Information (2026/2027)

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United Flight 3599 Route Deals From $289

The cheapest prices found with in the last 7 days for return flights were $309 and $289 for one-way flights to Louisville Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Mar 3 - Sun, Mar 7
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$309 Roundtrip, found 1 day ago
$309
Roundtrip
found 1 day ago
Select United flight, departing Wed, Mar 3 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Mar 7, priced at $309 found 1 day ago
Wed, Nov 11 - Sat, Nov 14
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$315 Roundtrip, found 14 hours ago
$315
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Nov 11 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Nov 14, priced at $315 found 14 hours ago
Wed, Mar 3 - Sun, Mar 7
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$319 Roundtrip, found 1 day ago
$319
Roundtrip
found 1 day ago
Select United flight, departing Wed, Mar 3 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Mar 7, priced at $319 found 1 day ago
Fri, Nov 6 - Mon, Nov 9
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$320 Roundtrip, found 3 days ago
$320
Roundtrip
found 3 days ago
Select United flight, departing Fri, Nov 6 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Nov 9, priced at $320 found 3 days ago
Thu, Mar 4 - Sun, Mar 7
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select United flight, departing Thu, Mar 4 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Mar 7, priced at $324 found 1 day ago
Thu, Mar 4 - Sun, Mar 7
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$329 Roundtrip, found 1 day ago
$329
Roundtrip
found 1 day ago
Select United flight, departing Thu, Mar 4 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Mar 7, priced at $329 found 1 day ago
Fri, Nov 6 - Mon, Nov 9
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$330 Roundtrip, found 3 days ago
$330
Roundtrip
found 3 days ago
Select United flight, departing Fri, Nov 6 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Nov 9, priced at $330 found 3 days ago
Tue, Nov 24 - Tue, Dec 1
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$333 Roundtrip, found 3 days ago
$333
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 24 from Newark Liberty Intl. Airport to Louisville Intl., returning Tue, Dec 1, priced at $333 found 3 days ago
Thu, Mar 4 - Sun, Mar 7
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$334 Roundtrip, found 1 day ago
$334
Roundtrip
found 1 day ago
Select United flight, departing Thu, Mar 4 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Mar 7, priced at $334 found 1 day ago
Tue, Nov 24 - Tue, Dec 1
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$339 Roundtrip, found 3 days ago
$339
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 24 from Newark Liberty Intl. Airport to Louisville Intl., returning Tue, Dec 1, priced at $339 found 3 days ago
Fri, Nov 6 - Mon, Nov 9
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$340 Roundtrip, found 3 days ago
$340
Roundtrip
found 3 days ago
Select United flight, departing Fri, Nov 6 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Nov 9, priced at $340 found 3 days ago
Wed, Nov 11 - Sat, Nov 14
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$341 Roundtrip, found 14 hours ago
$341
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Nov 11 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Nov 14, priced at $341 found 14 hours ago
Tue, Nov 24 - Tue, Dec 1
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$343 Roundtrip, found 3 days ago
$343
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 24 from Newark Liberty Intl. Airport to Louisville Intl., returning Tue, Dec 1, priced at $343 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.