American Airlines Flight 639 Deals & Information (2026/2027)

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American Airlines Flight 639 Route Deals From $183

The cheapest prices found with in the last 7 days for return flights were $372 and $183 for one-way flights to Tucson Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 2 - Wed, May 6
ORD
O'Hare Intl.
TUS
Tucson Intl.
$372 Roundtrip, found 1 hour ago
$372
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, May 2 from O'Hare Intl. to Tucson Intl., returning Wed, May 6, priced at $372 found 1 hour ago
Wed, May 20 - Tue, May 26
ORD
O'Hare Intl.
TUS
Tucson Intl.
$378 Roundtrip, found 1 day ago
$378
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, May 20 from O'Hare Intl. to Tucson Intl., returning Tue, May 26, priced at $378 found 1 day ago
Sat, May 2 - Wed, May 6
ORD
O'Hare Intl.
TUS
Tucson Intl.
$381 Roundtrip, found 1 hour ago
$381
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, May 2 from O'Hare Intl. to Tucson Intl., returning Wed, May 6, priced at $381 found 1 hour ago
Sat, May 2 - Wed, May 6
ORD
O'Hare Intl.
TUS
Tucson Intl.
$381 Roundtrip, found 1 hour ago
$381
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, May 2 from O'Hare Intl. to Tucson Intl., returning Wed, May 6, priced at $381 found 1 hour ago
Wed, May 20 - Tue, May 26
ORD
O'Hare Intl.
TUS
Tucson Intl.
$388 Roundtrip, found 1 day ago
$388
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, May 20 from O'Hare Intl. to Tucson Intl., returning Tue, May 26, priced at $388 found 1 day ago
Mon, Jun 1 - Tue, Jun 2
ORD
O'Hare Intl.
TUS
Tucson Intl.
$388 Roundtrip, found 2 days ago
$388
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 1 from O'Hare Intl. to Tucson Intl., returning Tue, Jun 2, priced at $388 found 2 days ago
Sat, May 2 - Wed, May 6
ORD
O'Hare Intl.
TUS
Tucson Intl.
$390 Roundtrip, found 1 hour ago
$390
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, May 2 from O'Hare Intl. to Tucson Intl., returning Wed, May 6, priced at $390 found 1 hour ago
Sat, May 9 - Wed, May 13
ORD
O'Hare Intl.
TUS
Tucson Intl.
$400 Roundtrip, found 11 hours ago
$400
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Sat, May 9 from O'Hare Intl. to Tucson Intl., returning Wed, May 13, priced at $400 found 11 hours ago
Tue, May 19 - Sun, May 24
ORD
O'Hare Intl.
TUS
Tucson Intl.
$402 Roundtrip, found 1 day ago
$402
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, May 19 from O'Hare Intl. to Tucson Intl., returning Sun, May 24, priced at $402 found 1 day ago
Wed, Jul 1 - Tue, Jul 7
ORD
O'Hare Intl.
TUS
Tucson Intl.
$404 Roundtrip, found 1 day ago
$404
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jul 1 from O'Hare Intl. to Tucson Intl., returning Tue, Jul 7, priced at $404 found 1 day ago

Frequently asked questions

What route does flight number AA639 take?
AA639 takes a few routes. The most popular is between Tucson Intl. Airport and Chicago, IL Airport (ORD-O'Hare Intl.), which is a direct flight. This flight typically takes 3 hours and 39 minutes. However, you might find other flights with this number that are multi-stop.
What kind of plane is on flight number AA639?
AA639 is a flight number that serves lots of different routes. If you're booked on its most popular one, Tucson Intl. Airport (TUS) to ORD, there's a good chance you'll be hopping on board an Airbus A319.
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 AA639 flight with Travelocity, please visit our Customer Service Portal.