United Flight AA2138 Deals & Information (2025/2026)

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United Flight 2138 Route Deals From $96

The cheapest prices found with in the last 7 days for return flights were $191 and $96 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 25 - Sun, Sep 28
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$191 Roundtrip, just found
$191
Roundtrip
just found
Select United flight, departing Thu, Sep 25 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Sun, Sep 28, priced at $191 just found
Thu, Sep 25 - Sun, Sep 28
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$209 Roundtrip, just found
$209
Roundtrip
just found
Select United flight, departing Thu, Sep 25 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Sun, Sep 28, priced at $209 just found
Thu, Sep 25 - Sun, Sep 28
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$218 Roundtrip, just found
$218
Roundtrip
just found
Select United flight, departing Thu, Sep 25 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Sun, Sep 28, priced at $218 just found
Thu, Oct 9 - Sun, Oct 12
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$225 Roundtrip, found 5 hours ago
$225
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Oct 9 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Sun, Oct 12, priced at $225 found 5 hours ago
Tue, Sep 9 - Fri, Sep 12
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$233 Roundtrip, found 3 days ago
$233
Roundtrip
found 3 days ago
Select United flight, departing Tue, Sep 9 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Fri, Sep 12, priced at $233 found 3 days ago
Thu, Oct 9 - Sun, Oct 12
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$234 Roundtrip, found 5 hours ago
$234
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Oct 9 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Sun, Oct 12, priced at $234 found 5 hours ago
Sat, Sep 6 - Tue, Sep 9
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$238 Roundtrip, found 7 hours ago
$238
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Sep 6 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Tue, Sep 9, priced at $238 found 7 hours ago
Tue, Sep 9 - Fri, Sep 12
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$239 Roundtrip, found 3 days ago
$239
Roundtrip
found 3 days ago
Select United flight, departing Tue, Sep 9 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Fri, Sep 12, priced at $239 found 3 days ago
Thu, Oct 9 - Sun, Oct 12
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$242 Roundtrip, found 5 hours ago
$242
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Oct 9 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Sun, Oct 12, priced at $242 found 5 hours ago
Thu, Oct 9 - Sun, Oct 12
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$246 Roundtrip, found 5 hours ago
$246
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Oct 9 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Sun, Oct 12, priced at $246 found 5 hours ago
Sat, Sep 6 - Tue, Sep 9
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$247 Roundtrip, found 7 hours ago
$247
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Sep 6 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Tue, Sep 9, priced at $247 found 7 hours ago
Thu, Sep 25 - Sun, Sep 28
BZN
Bozeman Yellowstone Intl.
ORD
O'Hare Intl.
$252 Roundtrip, just found
$252
Roundtrip
just found
Select United flight, departing Thu, Sep 25 from Bozeman Yellowstone Intl. to O'Hare Intl., returning Sun, Sep 28, priced at $252 just found