United Flight 4579 Deals & Information (2025/2026)

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United Flight 4579 Route Deals From $89

The cheapest prices found with in the last 7 days for return flights were $177 and $89 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 4 - Thu, Nov 6
MEM
Memphis Intl.
ORD
O'Hare Intl.
$177 Roundtrip, just found
$177
Roundtrip
just found
Select United flight, departing Tue, Nov 4 from Memphis Intl. to O'Hare Intl., returning Thu, Nov 6, priced at $177 just found
Tue, Nov 4 - Thu, Nov 6
MEM
Memphis Intl.
ORD
O'Hare Intl.
$180 Roundtrip, just found
$180
Roundtrip
just found
Select United flight, departing Tue, Nov 4 from Memphis Intl. to O'Hare Intl., returning Thu, Nov 6, priced at $180 just found
Sat, Oct 11 - Wed, Oct 15
MEM
Memphis Intl.
ORD
O'Hare Intl.
$185 Roundtrip, found 19 hours ago
$185
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Oct 11 from Memphis Intl. to O'Hare Intl., returning Wed, Oct 15, priced at $185 found 19 hours ago
Sat, Aug 23 - Sun, Aug 24
MEM
Memphis Intl.
ORD
O'Hare Intl.
$191 Roundtrip, found 12 hours ago
$191
Roundtrip
found 12 hours ago
Select United flight, departing Sat, Aug 23 from Memphis Intl. to O'Hare Intl., returning Sun, Aug 24, priced at $191 found 12 hours ago
Sat, Aug 23 - Sun, Aug 24
MEM
Memphis Intl.
ORD
O'Hare Intl.
$207 Roundtrip, found 12 hours ago
$207
Roundtrip
found 12 hours ago
Select United flight, departing Sat, Aug 23 from Memphis Intl. to O'Hare Intl., returning Sun, Aug 24, priced at $207 found 12 hours ago

Frequently asked questions

What route does flight number UA4579 take?
UA4579 is used on multiple routes, but the most common is between EWR and Lambert Field. If you manage to score a direct flight, you'll stroll through arrivals in roughly 2 hours and 42 minutes. Multi-stop flights can also use this number, as can flights on other routes.
What terminal does UA4579 fly out of?
If you're jetting off from EWR, there's a good chance you'll board the aircraft from Terminal C. The most traveled route for flight number UA4579 is Newark, NJ Airport (EWR-Liberty Intl.) to St. Louis, MO Airport (STL-Lambert-St. Louis Intl.), which is a direct flight.
What kind of plane is on flight number UA4579?
You'll probably be boarding the Canadair (Bombardier) Regional Jet 550 if you're on flight UA4579 from Liberty Intl. Airport (EWR) to St. Louis, MO Airport (STL-Lambert-St. Louis Intl.). It's the most commonly used aircraft on this route.
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 UA4579 flight with Travelocity, please visit our Customer Service Portal.