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, found 5 hours ago
$303
Roundtrip
found 5 hours ago
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $303 found 5 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$318 Roundtrip, found 2 hours ago
$318
Roundtrip
found 2 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 2 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
Tue, Nov 24 - Sun, Nov 29
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$343 Roundtrip, found 1 hour ago
$343
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Nov 24 from O'Hare Intl. to Sioux Falls Regional, returning Sun, Nov 29, priced at $343 found 1 hour 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, found 5 hours ago
$348
Roundtrip
found 5 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 5 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$354 Roundtrip, found 2 hours ago
$354
Roundtrip
found 2 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 2 hours ago
Wed, Oct 21 - Mon, Oct 26
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$359 Roundtrip, found 1 hour ago
$359
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Oct 21 from O'Hare Intl. to Sioux Falls Regional, returning Mon, Oct 26, priced at $359 found 1 hour ago
Fri, Oct 16 - Fri, Oct 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$368 Roundtrip, found 1 hour ago
$368
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Oct 16 from O'Hare Intl. to Sioux Falls Regional, returning Fri, Oct 23, priced at $368 found 1 hour ago
Wed, Nov 25 - Sat, Nov 28
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$368 Roundtrip, found 4 hours ago
$368
Roundtrip
found 4 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 4 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$369 Roundtrip, found 2 hours ago
$369
Roundtrip
found 2 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 2 hours ago
Fri, Oct 2 - Wed, Oct 7
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$373 Roundtrip, found 5 hours ago
$373
Roundtrip
found 5 hours ago
Select United flight, departing Fri, Oct 2 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Oct 7, priced at $373 found 5 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$377 Roundtrip, found 2 hours ago
$377
Roundtrip
found 2 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 2 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$379 Roundtrip, found 2 hours ago
$379
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Sep 16 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Sep 23, priced at $379 found 2 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$387 Roundtrip, found 2 hours ago
$387
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Sep 16 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Sep 23, priced at $387 found 2 hours ago
Wed, Sep 16 - Wed, Sep 23
ORD
O'Hare Intl.
FSD
Sioux Falls Regional
$389 Roundtrip, found 2 hours ago
$389
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Sep 16 from O'Hare Intl. to Sioux Falls Regional, returning Wed, Sep 23, priced at $389 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.