United Flight 4551 Deals & Information (2026/2027)

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United Flight 4551 Route Deals From $141

The cheapest prices found with in the last 7 days for return flights were $279 and $141 for one-way flights to Greenville-Spartanburg Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 6 - Mon, Nov 9
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$279 Roundtrip, found 3 hours ago
$279
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Nov 6 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Mon, Nov 9, priced at $279 found 3 hours ago
Wed, Oct 14 - Mon, Oct 19
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$298 Roundtrip, found 3 days ago
$298
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 14 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Mon, Oct 19, priced at $298 found 3 days ago
Wed, Oct 14 - Mon, Oct 19
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$302 Roundtrip, found 3 days ago
$302
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 14 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Mon, Oct 19, priced at $302 found 3 days ago
Wed, Oct 14 - Mon, Oct 19
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$312 Roundtrip, found 3 days ago
$312
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 14 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Mon, Oct 19, priced at $312 found 3 days ago
Wed, Oct 14 - Mon, Oct 19
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$320 Roundtrip, found 3 days ago
$320
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 14 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Mon, Oct 19, priced at $320 found 3 days ago
Thu, Jan 28 - Sun, Jan 31
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$322 Roundtrip, found 15 hours ago
$322
Roundtrip
found 15 hours ago
Select United flight, departing Thu, Jan 28 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Sun, Jan 31, priced at $322 found 15 hours ago
Thu, Jan 28 - Sun, Jan 31
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$332 Roundtrip, found 15 hours ago
$332
Roundtrip
found 15 hours ago
Select United flight, departing Thu, Jan 28 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Sun, Jan 31, priced at $332 found 15 hours ago
Thu, Sep 17 - Tue, Sep 22
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$339 Roundtrip, found 3 days ago
$339
Roundtrip
found 3 days ago
Select United flight, departing Thu, Sep 17 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Tue, Sep 22, priced at $339 found 3 days ago
Fri, May 14 - Mon, May 17
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$341 Roundtrip, found 22 hours ago
$341
Roundtrip
found 22 hours ago
Select United flight, departing Fri, May 14 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Mon, May 17, priced at $341 found 22 hours ago
Fri, Sep 4 - Thu, Sep 10
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$341 Roundtrip, found 5 days ago
$341
Roundtrip
found 5 days ago
Select United flight, departing Fri, Sep 4 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Thu, Sep 10, priced at $341 found 5 days ago
Wed, Oct 14 - Mon, Oct 19
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$342 Roundtrip, found 3 days ago
$342
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 14 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Mon, Oct 19, priced at $342 found 3 days ago
Fri, Nov 6 - Mon, Nov 9
ORD
O'Hare Intl.
GSP
Greenville-Spartanburg Intl.
$350 Roundtrip, found 3 hours ago
$350
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Nov 6 from O'Hare Intl. to Greenville-Spartanburg Intl., returning Mon, Nov 9, priced at $350 found 3 hours ago

Frequently asked questions

What route does flight number UA4551 take?
UA4551 flies direct from ORD to Albany International Airport in 2 hours and 1 minute. It can sometimes be used on other routes though, some of which may be multi-stop flights. Keep an eye out for this when locking in your airfare to avoid any confusion.
What terminal does UA4551 fly out of?
Terminal 1 is the terminal you'll likely depart from if you're booked on a flight from O'Hare Airport. Chicago, IL Airport (ORD-O'Hare Intl.) to Albany Intl. Airport (ALB) is the most commonly traveled route for flight number UA4551.
What kind of plane is on flight number UA4551?
If you've booked a seat on flight UA4551 from O'Hare Airport to ALB, there's an excellent chance you'll be traveling aboard the Canadair (Bombardier) Regional Jet 550. Flight UA4551 serves numerous routes, but this is the most popular.
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 UA4551 flight with Travelocity, please visit our Customer Service Portal.