United Flight AA4551 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 4551 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $189 and $214 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Nov 10 - Tue, Nov 18
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Nov 10 from Sioux Falls Regional to O'Hare Intl., returning Tue, Nov 18, priced at $189 found 1 hour ago
Fri, Sep 12 - Mon, Sep 15
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$195 Roundtrip, found 2 days ago
$195
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 12 from Sioux Falls Regional to O'Hare Intl., returning Mon, Sep 15, priced at $195 found 2 days ago
Sat, Sep 20 - Tue, Sep 23
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$208 Roundtrip, found 4 hours ago
$208
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Sep 20 from Sioux Falls Regional to O'Hare Intl., returning Tue, Sep 23, priced at $208 found 4 hours ago
Sat, Sep 20 - Sun, Sep 21
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$210 Roundtrip, found 2 days ago
$210
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 20 from Sioux Falls Regional to O'Hare Intl., returning Sun, Sep 21, priced at $210 found 2 days ago
Sat, Sep 20 - Tue, Sep 23
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$217 Roundtrip, found 4 hours ago
$217
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Sep 20 from Sioux Falls Regional to O'Hare Intl., returning Tue, Sep 23, priced at $217 found 4 hours ago
Wed, Aug 13 - Sun, Aug 17
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$229 Roundtrip, found 1 hour ago
$229
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Aug 13 from Sioux Falls Regional to O'Hare Intl., returning Sun, Aug 17, priced at $229 found 1 hour ago
Thu, Dec 4 - Sun, Dec 7
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$236 Roundtrip, found 17 hours ago
$236
Roundtrip
found 17 hours ago
Select United flight, departing Thu, Dec 4 from Sioux Falls Regional to O'Hare Intl., returning Sun, Dec 7, priced at $236 found 17 hours ago
Sat, Sep 20 - Tue, Sep 23
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$246 Roundtrip, found 4 hours ago
$246
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Sep 20 from Sioux Falls Regional to O'Hare Intl., returning Tue, Sep 23, priced at $246 found 4 hours ago
Fri, Aug 15 - Sat, Aug 16
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$258 Roundtrip, found 2 days ago
$258
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 15 from Sioux Falls Regional to O'Hare Intl., returning Sat, Aug 16, priced at $258 found 2 days ago
Thu, Aug 14 - Sun, Aug 17
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$270 Roundtrip, found 1 hour ago
$270
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Aug 14 from Sioux Falls Regional to O'Hare Intl., returning Sun, Aug 17, priced at $270 found 1 hour ago
Wed, Aug 13 - Sun, Aug 17
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$272 Roundtrip, found 1 hour ago
$272
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Aug 13 from Sioux Falls Regional to O'Hare Intl., returning Sun, Aug 17, priced at $272 found 1 hour 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.