United Flight AA4551 Deals & Information (2025/2026)

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United Flight 4551 Route Deals From $183

The cheapest prices found with in the last 7 days for return flights were $189 and $183 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 14 - Sat, Nov 15
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$189 Roundtrip, found 3 days ago
$189
Roundtrip
found 3 days ago
Select United flight, departing Fri, Nov 14 from Sioux Falls Regional to O'Hare Intl., returning Sat, Nov 15, priced at $189 found 3 days ago
Sat, Jul 19 - Wed, Jul 23
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$193 Roundtrip, found 4 days ago
$193
Roundtrip
found 4 days ago
Select United flight, departing Sat, Jul 19 from Sioux Falls Regional to O'Hare Intl., returning Wed, Jul 23, priced at $193 found 4 days ago
Sun, Jun 29 - Sun, Jul 6
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$199 Roundtrip, found 4 days ago
$199
Roundtrip
found 4 days ago
Select United flight, departing Sun, Jun 29 from Sioux Falls Regional to O'Hare Intl., returning Sun, Jul 6, priced at $199 found 4 days ago
Sat, Nov 15 - Sun, Nov 16
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$220 Roundtrip, found 3 days ago
$220
Roundtrip
found 3 days ago
Select United flight, departing Sat, Nov 15 from Sioux Falls Regional to O'Hare Intl., returning Sun, Nov 16, priced at $220 found 3 days ago
Fri, Jul 18 - Tue, Jul 22
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$224 Roundtrip, found 13 hours ago
$224
Roundtrip
found 13 hours ago
Select United flight, departing Fri, Jul 18 from Sioux Falls Regional to O'Hare Intl., returning Tue, Jul 22, priced at $224 found 13 hours ago
Sat, Nov 15 - Sun, Nov 16
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$226 Roundtrip, found 3 days ago
$226
Roundtrip
found 3 days ago
Select United flight, departing Sat, Nov 15 from Sioux Falls Regional to O'Hare Intl., returning Sun, Nov 16, priced at $226 found 3 days ago
Fri, Nov 14 - Sat, Nov 15
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$229 Roundtrip, found 3 days ago
$229
Roundtrip
found 3 days ago
Select United flight, departing Fri, Nov 14 from Sioux Falls Regional to O'Hare Intl., returning Sat, Nov 15, priced at $229 found 3 days ago
Thu, Sep 4 - Sun, Sep 7
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$240 Roundtrip, found 2 days ago
$240
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 4 from Sioux Falls Regional to O'Hare Intl., returning Sun, Sep 7, priced at $240 found 2 days ago
Sat, Jul 26 - Wed, Jul 30
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$252 Roundtrip, found 5 days ago
$252
Roundtrip
found 5 days ago
Select United flight, departing Sat, Jul 26 from Sioux Falls Regional to O'Hare Intl., returning Wed, Jul 30, priced at $252 found 5 days ago
Sat, Jul 26 - Wed, Jul 30
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$254 Roundtrip, found 5 days ago
$254
Roundtrip
found 5 days ago
Select United flight, departing Sat, Jul 26 from Sioux Falls Regional to O'Hare Intl., returning Wed, Jul 30, priced at $254 found 5 days ago
Sat, Jul 19 - Wed, Jul 23
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$254 Roundtrip, found 4 days ago
$254
Roundtrip
found 4 days ago
Select United flight, departing Sat, Jul 19 from Sioux Falls Regional to O'Hare Intl., returning Wed, Jul 23, priced at $254 found 4 days ago
Thu, Jul 24 - Sun, Jul 27
FSD
Sioux Falls Regional
ORD
O'Hare Intl.
$256 Roundtrip, found 4 days ago
$256
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jul 24 from Sioux Falls Regional to O'Hare Intl., returning Sun, Jul 27, priced at $256 found 4 days 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.