American Airlines Flight 3637 Deals & Information (2026/2027)

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American Airlines Flight 3637 Route Deals From $208

The cheapest prices found with in the last 7 days for return flights were $184 and $208 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jan 27 - Sat, Jan 31
ATW
Appleton Intl.
ORD
O'Hare Intl.
$184 Roundtrip, found 3 days ago
$184
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jan 27 from Appleton Intl. to O'Hare Intl., returning Sat, Jan 31, priced at $184 found 3 days ago
Sat, May 16 - Mon, May 18
ATW
Appleton Intl.
ORD
O'Hare Intl.
$194 Roundtrip, found 3 days ago
$194
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, May 16 from Appleton Intl. to O'Hare Intl., returning Mon, May 18, priced at $194 found 3 days ago
Sat, May 16 - Mon, May 18
ATW
Appleton Intl.
ORD
O'Hare Intl.
$223 Roundtrip, found 3 days ago
$223
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, May 16 from Appleton Intl. to O'Hare Intl., returning Mon, May 18, priced at $223 found 3 days ago
Fri, Apr 3 - Sun, Apr 5
ATW
Appleton Intl.
ORD
O'Hare Intl.
$238 Roundtrip, found 4 days ago
$238
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Apr 3 from Appleton Intl. to O'Hare Intl., returning Sun, Apr 5, priced at $238 found 4 days ago
Sat, Jan 24 - Mon, Jan 26
ATW
Appleton Intl.
ORD
O'Hare Intl.
$240 Roundtrip, found 4 days ago
$240
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Jan 24 from Appleton Intl. to O'Hare Intl., returning Mon, Jan 26, priced at $240 found 4 days ago
Mon, Feb 2 - Sun, Feb 8
ATW
Appleton Intl.
ORD
O'Hare Intl.
$242 Roundtrip, found 1 day ago
$242
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Feb 2 from Appleton Intl. to O'Hare Intl., returning Sun, Feb 8, priced at $242 found 1 day ago
Mon, Feb 16 - Wed, Mar 4
ATW
Appleton Intl.
ORD
O'Hare Intl.
$246 Roundtrip, found 11 hours ago
$246
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Mon, Feb 16 from Appleton Intl. to O'Hare Intl., returning Wed, Mar 4, priced at $246 found 11 hours ago
Wed, May 13 - Sat, May 16
ATW
Appleton Intl.
ORD
O'Hare Intl.
$246 Roundtrip, found 3 days ago
$246
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, May 13 from Appleton Intl. to O'Hare Intl., returning Sat, May 16, priced at $246 found 3 days ago
Fri, Mar 27 - Sat, Apr 4
ATW
Appleton Intl.
ORD
O'Hare Intl.
$247 Roundtrip, found 1 day ago
$247
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Mar 27 from Appleton Intl. to O'Hare Intl., returning Sat, Apr 4, priced at $247 found 1 day ago
Fri, Mar 6 - Thu, Mar 19
ATW
Appleton Intl.
ORD
O'Hare Intl.
$254 Roundtrip, found 11 hours ago
$254
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Fri, Mar 6 from Appleton Intl. to O'Hare Intl., returning Thu, Mar 19, priced at $254 found 11 hours ago