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

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American Airlines Flight 639 Route Deals From $132

The cheapest prices found with in the last 7 days for return flights were $301 and $132 for one-way flights to Tucson Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 27 - Sat, May 30
ORD
O'Hare Intl.
TUS
Tucson Intl.
$301 Roundtrip, found 22 hours ago
$301
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Wed, May 27 from O'Hare Intl. to Tucson Intl., returning Sat, May 30, priced at $301 found 22 hours ago
Wed, May 27 - Sat, May 30
ORD
O'Hare Intl.
TUS
Tucson Intl.
$333 Roundtrip, found 22 hours ago
$333
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Wed, May 27 from O'Hare Intl. to Tucson Intl., returning Sat, May 30, priced at $333 found 22 hours ago
Tue, Aug 18 - Thu, Aug 20
ORD
O'Hare Intl.
TUS
Tucson Intl.
$340 Roundtrip, found 7 hours ago
$340
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, Aug 18 from O'Hare Intl. to Tucson Intl., returning Thu, Aug 20, priced at $340 found 7 hours ago
Wed, May 27 - Sat, May 30
ORD
O'Hare Intl.
TUS
Tucson Intl.
$343 Roundtrip, found 22 hours ago
$343
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Wed, May 27 from O'Hare Intl. to Tucson Intl., returning Sat, May 30, priced at $343 found 22 hours ago
Wed, May 27 - Mon, Jun 15
ORD
O'Hare Intl.
TUS
Tucson Intl.
$348 Roundtrip, found 2 days ago
$348
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, May 27 from O'Hare Intl. to Tucson Intl., returning Mon, Jun 15, priced at $348 found 2 days ago
Tue, Aug 18 - Thu, Aug 20
ORD
O'Hare Intl.
TUS
Tucson Intl.
$350 Roundtrip, found 7 hours ago
$350
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, Aug 18 from O'Hare Intl. to Tucson Intl., returning Thu, Aug 20, priced at $350 found 7 hours ago
Wed, May 27 - Sat, May 30
ORD
O'Hare Intl.
TUS
Tucson Intl.
$352 Roundtrip, found 22 hours ago
$352
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Wed, May 27 from O'Hare Intl. to Tucson Intl., returning Sat, May 30, priced at $352 found 22 hours ago
Tue, Jun 2 - Fri, Jun 5
ORD
O'Hare Intl.
TUS
Tucson Intl.
$356 Roundtrip, found 1 hour ago
$356
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Tue, Jun 2 from O'Hare Intl. to Tucson Intl., returning Fri, Jun 5, priced at $356 found 1 hour ago
Tue, Jun 2 - Fri, Jun 5
ORD
O'Hare Intl.
TUS
Tucson Intl.
$361 Roundtrip, found 1 hour ago
$361
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Tue, Jun 2 from O'Hare Intl. to Tucson Intl., returning Fri, Jun 5, priced at $361 found 1 hour ago
Tue, Aug 18 - Thu, Aug 20
ORD
O'Hare Intl.
TUS
Tucson Intl.
$363 Roundtrip, found 7 hours ago
$363
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, Aug 18 from O'Hare Intl. to Tucson Intl., returning Thu, Aug 20, priced at $363 found 7 hours 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.