United Flight 4487 Deals & Information (2026/2027)

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United Flight 4487 Route Deals From $110

The cheapest prices found with in the last 7 days for return flights were $176 and $110 for one-way flights to Lambert-St. Louis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$176 Roundtrip, found 2 days ago
$176
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $176 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$192 Roundtrip, found 2 days ago
$192
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $192 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$200 Roundtrip, found 2 days ago
$200
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $200 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$205 Roundtrip, found 2 days ago
$205
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $205 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$206 Roundtrip, found 2 days ago
$206
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $206 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$215 Roundtrip, found 2 days ago
$215
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $215 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$230 Roundtrip, found 2 days ago
$230
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $230 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$232 Roundtrip, found 2 days ago
$232
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $232 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $237 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$240 Roundtrip, found 2 days ago
$240
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $240 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$245 Roundtrip, found 2 days ago
$245
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $245 found 2 days ago
Sat, Feb 21 - Mon, Feb 23
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Mon, Feb 23, priced at $254 found 2 days ago

Frequently asked questions

What route does flight number UA4487 take?
UA4487 serves multiple routes, but the most common is between Green Airport and EWR. If on a non-stop flight, you'll step off the plane in approximately 1 hour and 14 minutes. Multi-stop flights can also operate under the same number, as can services on other routes.
What kind of plane is on flight number UA4487?
UA4487 is a flight number that is used on multiple routes. If you're booked on its most popular route, T.F. Green Airport (PVD) to Newark, NJ Airport (EWR-Liberty Intl.), chances are you'll be climbing aboard a Canadair (Bombardier) Regional Jet 550.
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 UA4487 flight with Travelocity, please visit our Customer Service Portal.