United Flight 4566 Deals & Information (2026/2027)

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United Flight 4566 Route Deals From $279

The cheapest prices found with in the last 7 days for return flights were $259 and $279 for one-way flights to Sioux Falls Regional for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 9 - Tue, Oct 13
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$259 Roundtrip, found 5 days ago
$259
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 9 from O'Hare Intl. to Sioux Falls Regional, returning Tue, Oct 13, priced at $259 found 5 days ago
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$303 Roundtrip, just found
$303
Roundtrip
just found
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $303 just found
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$318 Roundtrip, found 14 hours ago
$318
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Sep 16 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Sep 23, priced at $318 found 14 hours ago
Fri, Oct 9 - Tue, Oct 13
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$331 Roundtrip, found 5 days ago
$331
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 9 from O'Hare Intl. to Sioux Falls Regional, returning Tue, Oct 13, priced at $331 found 5 days ago
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$343 Roundtrip, just found
$343
Roundtrip
just found
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $343 just found
Tue, Nov 24 - Sun, Nov 29
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$343 Roundtrip, found 12 hours ago
$343
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Nov 24 from O'Hare Intl. to Sioux Falls Regional, returning Sun, Nov 29, priced at $343 found 12 hours ago
Fri, Oct 9 - Tue, Oct 13
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$344 Roundtrip, found 5 days ago
$344
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 9 from O'Hare Intl. to Sioux Falls Regional, returning Tue, Oct 13, priced at $344 found 5 days ago
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$348 Roundtrip, just found
$348
Roundtrip
just found
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $348 just found
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$354 Roundtrip, found 14 hours ago
$354
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Sep 16 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Sep 23, priced at $354 found 14 hours ago
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$359 Roundtrip, just found
$359
Roundtrip
just found
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $359 just found
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$362 Roundtrip, just found
$362
Roundtrip
just found
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $362 just found
Fri, Oct 16 - Fri, Oct 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$368 Roundtrip, found 13 hours ago
$368
Roundtrip
found 13 hours ago
Select United flight, departing Fri, Oct 16 from O'Hare Intl. to Sioux Falls Regional, returning Fri, Oct 23, priced at $368 found 13 hours ago
Wed, Nov 25 - Sat, Nov 28
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$368 Roundtrip, found 16 hours ago
$368
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Nov 25 from O'Hare Intl. to Sioux Falls Regional, returning Sat, Nov 28, priced at $368 found 16 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$369 Roundtrip, found 14 hours ago
$369
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Sep 16 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Sep 23, priced at $369 found 14 hours ago
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$374 Roundtrip, just found
$374
Roundtrip
just found
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $374 just found
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$377 Roundtrip, found 14 hours ago
$377
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Sep 16 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Sep 23, priced at $377 found 14 hours ago

Frequently asked questions

What route does flight number UA4566 take?
Flight number UA4566 takes about 2 hours and 17 minutes to fly directly from Hilton Head Island Airport (HHH) to STL. We all know there's magic in the destination, but the journey is always half the fun!
What kind of plane is on flight number UA4566?
Get set to hop on board a Canadair (Bombardier) Regional Jet 550 if your flight number is UA4566. The majority of flights from Hilton Head Island Airport (HHH) to St. Louis, MO Airport (STL-Lambert-St. Louis Intl.) operate using this type of plane.
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 UA4566 flight with Travelocity, please visit our Customer Service Portal.