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 6 days ago
$259
Roundtrip
found 6 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 6 days ago
Sat, Oct 3 - Tue, Oct 6
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$303 Roundtrip, found 2 hours ago
$303
Roundtrip
found 2 hours ago
Select United flight, departing Sat, Oct 3 from O'Hare Intl. to Sioux Falls Regional, returning Tue, Oct 6, priced at $303 found 2 hours ago
Sat, Dec 12 - Mon, Jan 18
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$314 Roundtrip, found 2 hours ago
$314
Roundtrip
found 2 hours ago
Select United flight, departing Sat, Dec 12 from O'Hare Intl. to Sioux Falls Regional, returning Mon, Jan 18, priced at $314 found 2 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$318 Roundtrip, found 23 hours ago
$318
Roundtrip
found 23 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 23 hours ago
Fri, Oct 9 - Tue, Oct 13
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$331 Roundtrip, found 6 days ago
$331
Roundtrip
found 6 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 6 days ago
Sat, Dec 12 - Mon, Jan 18
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$334 Roundtrip, found 2 hours ago
$334
Roundtrip
found 2 hours ago
Select United flight, departing Sat, Dec 12 from O'Hare Intl. to Sioux Falls Regional, returning Mon, Jan 18, priced at $334 found 2 hours ago
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$343 Roundtrip, found 9 hours ago
$343
Roundtrip
found 9 hours ago
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $343 found 9 hours ago
Mon, Nov 23 - Sun, Nov 29
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$343 Roundtrip, found 2 hours ago
$343
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Nov 23 from O'Hare Intl. to Sioux Falls Regional, returning Sun, Nov 29, priced at $343 found 2 hours ago
Fri, Oct 9 - Tue, Oct 13
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$344 Roundtrip, found 6 days ago
$344
Roundtrip
found 6 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 6 days ago
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$348 Roundtrip, found 9 hours ago
$348
Roundtrip
found 9 hours ago
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $348 found 9 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$354 Roundtrip, found 23 hours ago
$354
Roundtrip
found 23 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 23 hours ago
Sat, Dec 12 - Mon, Jan 18
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$354 Roundtrip, found 2 hours ago
$354
Roundtrip
found 2 hours ago
Select United flight, departing Sat, Dec 12 from O'Hare Intl. to Sioux Falls Regional, returning Mon, Jan 18, priced at $354 found 2 hours ago
Sat, Oct 3 - Tue, Oct 6
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$359 Roundtrip, found 2 hours ago
$359
Roundtrip
found 2 hours ago
Select United flight, departing Sat, Oct 3 from O'Hare Intl. to Sioux Falls Regional, returning Tue, Oct 6, priced at $359 found 2 hours ago
Fri, Oct 2 - Tue, Oct 6
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$362 Roundtrip, found 2 hours ago
$362
Roundtrip
found 2 hours ago
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Tue, Oct 6, priced at $362 found 2 hours ago
Mon, Nov 23 - Sun, Nov 29
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$367 Roundtrip, found 2 hours ago
$367
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Nov 23 from O'Hare Intl. to Sioux Falls Regional, returning Sun, Nov 29, priced at $367 found 2 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.