United Flight 3599 Deals & Information (2026/2027)

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United Flight 3599 Route Deals From $269

The cheapest prices found with in the last 7 days for return flights were $269 and $269 for one-way flights to Louisville Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Nov 7 - Tue, Nov 10
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$269 Roundtrip, found 6 hours ago
$269
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Nov 7 from Newark Liberty Intl. Airport to Louisville Intl., returning Tue, Nov 10, priced at $269 found 6 hours ago
Sat, Oct 17 - Mon, Oct 19
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$273 Roundtrip, found 2 days ago
$273
Roundtrip
found 2 days ago
Select United flight, departing Sat, Oct 17 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Oct 19, priced at $273 found 2 days ago
Sat, Nov 7 - Tue, Nov 10
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$279 Roundtrip, found 6 hours ago
$279
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Nov 7 from Newark Liberty Intl. Airport to Louisville Intl., returning Tue, Nov 10, priced at $279 found 6 hours ago
Fri, Nov 20 - Sun, Nov 22
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$281 Roundtrip, found 15 hours ago
$281
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Nov 20 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Nov 22, priced at $281 found 15 hours ago
Sat, Oct 17 - Mon, Oct 19
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$283 Roundtrip, found 2 days ago
$283
Roundtrip
found 2 days ago
Select United flight, departing Sat, Oct 17 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Oct 19, priced at $283 found 2 days ago
Thu, Oct 15 - Sat, Oct 17
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$285 Roundtrip, found 1 day ago
$285
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 15 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Oct 17, priced at $285 found 1 day ago
Fri, Nov 20 - Sun, Nov 22
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$291 Roundtrip, found 15 hours ago
$291
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Nov 20 from Newark Liberty Intl. Airport to Louisville Intl., returning Sun, Nov 22, priced at $291 found 15 hours ago
Fri, Oct 30 - Mon, Nov 2
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$292 Roundtrip, found 5 days ago
$292
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 30 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Nov 2, priced at $292 found 5 days ago
Thu, Oct 15 - Sat, Oct 17
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 15 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Oct 17, priced at $293 found 1 day ago
Thu, Oct 15 - Sat, Oct 17
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$295 Roundtrip, found 1 day ago
$295
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 15 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Oct 17, priced at $295 found 1 day ago
Sat, Oct 17 - Mon, Oct 19
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$296 Roundtrip, found 2 days ago
$296
Roundtrip
found 2 days ago
Select United flight, departing Sat, Oct 17 from Newark Liberty Intl. Airport to Louisville Intl., returning Mon, Oct 19, priced at $296 found 2 days ago
Thu, Oct 15 - Sat, Oct 17
EWR
Newark Liberty Intl. Airport
SDF
Louisville Intl.
$298 Roundtrip, found 1 day ago
$298
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 15 from Newark Liberty Intl. Airport to Louisville Intl., returning Sat, Oct 17, priced at $298 found 1 day 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.