United Flight AA4581 Deals & Information (2025/2026)

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United Flight 4581 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, Sep 8 - Mon, Oct 13
LEX
Blue Grass
ORD
O'Hare Intl.
$189 Roundtrip, found 2 days ago
$189
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 8 from Blue Grass to O'Hare Intl., returning Mon, Oct 13, priced at $189 found 2 days ago
Sat, Oct 11 - Sun, Oct 12
LEX
Blue Grass
ORD
O'Hare Intl.
$193 Roundtrip, just found
$193
Roundtrip
just found
Select United flight, departing Sat, Oct 11 from Blue Grass to O'Hare Intl., returning Sun, Oct 12, priced at $193 just found
Fri, Oct 10 - Sun, Oct 12
LEX
Blue Grass
ORD
O'Hare Intl.
$194 Roundtrip, found 1 hour ago
$194
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Oct 10 from Blue Grass to O'Hare Intl., returning Sun, Oct 12, priced at $194 found 1 hour ago
Sat, Oct 11 - Sun, Oct 12
LEX
Blue Grass
ORD
O'Hare Intl.
$198 Roundtrip, just found
$198
Roundtrip
just found
Select United flight, departing Sat, Oct 11 from Blue Grass to O'Hare Intl., returning Sun, Oct 12, priced at $198 just found
Fri, Oct 10 - Sun, Oct 12
LEX
Blue Grass
ORD
O'Hare Intl.
$199 Roundtrip, found 1 hour ago
$199
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Oct 10 from Blue Grass to O'Hare Intl., returning Sun, Oct 12, priced at $199 found 1 hour ago
Sun, Aug 31 - Tue, Sep 16
LEX
Blue Grass
ORD
O'Hare Intl.
$202 Roundtrip, found 2 days ago
$202
Roundtrip
found 2 days ago
Select United flight, departing Sun, Aug 31 from Blue Grass to O'Hare Intl., returning Tue, Sep 16, priced at $202 found 2 days ago
Mon, Sep 8 - Mon, Oct 13
LEX
Blue Grass
ORD
O'Hare Intl.
$208 Roundtrip, found 2 days ago
$208
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 8 from Blue Grass to O'Hare Intl., returning Mon, Oct 13, priced at $208 found 2 days ago
Fri, Sep 5 - Sat, Sep 6
LEX
Blue Grass
ORD
O'Hare Intl.
$218 Roundtrip, found 5 days ago
$218
Roundtrip
found 5 days ago
Select United flight, departing Fri, Sep 5 from Blue Grass to O'Hare Intl., returning Sat, Sep 6, priced at $218 found 5 days ago
Mon, Sep 8 - Mon, Oct 13
LEX
Blue Grass
ORD
O'Hare Intl.
$219 Roundtrip, found 2 days ago
$219
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 8 from Blue Grass to O'Hare Intl., returning Mon, Oct 13, priced at $219 found 2 days ago
Fri, Oct 3 - Tue, Oct 7
LEX
Blue Grass
ORD
O'Hare Intl.
$220 Roundtrip, found 6 days ago
$220
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 3 from Blue Grass to O'Hare Intl., returning Tue, Oct 7, priced at $220 found 6 days ago
Sat, Oct 11 - Sun, Oct 12
LEX
Blue Grass
ORD
O'Hare Intl.
$224 Roundtrip, just found
$224
Roundtrip
just found
Select United flight, departing Sat, Oct 11 from Blue Grass to O'Hare Intl., returning Sun, Oct 12, priced at $224 just found
Mon, Oct 13 - Sat, Oct 18
LEX
Blue Grass
ORD
O'Hare Intl.
$229 Roundtrip, found 3 days ago
$229
Roundtrip
found 3 days ago
Select United flight, departing Mon, Oct 13 from Blue Grass to O'Hare Intl., returning Sat, Oct 18, priced at $229 found 3 days ago
Wed, Sep 17 - Sat, Sep 20
LEX
Blue Grass
ORD
O'Hare Intl.
$246 Roundtrip, found 6 days ago
$246
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 17 from Blue Grass to O'Hare Intl., returning Sat, Sep 20, priced at $246 found 6 days ago