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

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American Airlines Flight 639 Route Deals From $166

The cheapest prices found with in the last 7 days for return flights were $364 and $166 for one-way flights to Tucson Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 24 - Tue, Jun 30
ORD
O'Hare Intl.
TUS
Tucson Intl.
$364 Roundtrip, found 2 days ago
$364
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jun 24 from O'Hare Intl. to Tucson Intl., returning Tue, Jun 30, priced at $364 found 2 days ago
Wed, Jun 24 - Tue, Jun 30
ORD
O'Hare Intl.
TUS
Tucson Intl.
$374 Roundtrip, found 2 days ago
$374
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jun 24 from O'Hare Intl. to Tucson Intl., returning Tue, Jun 30, priced at $374 found 2 days ago
Wed, Oct 14 - Wed, Oct 21
ORD
O'Hare Intl.
TUS
Tucson Intl.
$376 Roundtrip, found 4 hours ago
$376
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Oct 14 from O'Hare Intl. to Tucson Intl., returning Wed, Oct 21, priced at $376 found 4 hours ago
Wed, Jun 24 - Tue, Jun 30
ORD
O'Hare Intl.
TUS
Tucson Intl.
$380 Roundtrip, found 2 days ago
$380
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jun 24 from O'Hare Intl. to Tucson Intl., returning Tue, Jun 30, priced at $380 found 2 days ago
Wed, Jun 24 - Thu, Jun 25
ORD
O'Hare Intl.
TUS
Tucson Intl.
$384 Roundtrip, found 2 days ago
$384
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jun 24 from O'Hare Intl. to Tucson Intl., returning Thu, Jun 25, priced at $384 found 2 days ago
Wed, Oct 14 - Wed, Oct 21
ORD
O'Hare Intl.
TUS
Tucson Intl.
$386 Roundtrip, found 4 hours ago
$386
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Oct 14 from O'Hare Intl. to Tucson Intl., returning Wed, Oct 21, priced at $386 found 4 hours ago
Wed, Jun 24 - Thu, Jun 25
ORD
O'Hare Intl.
TUS
Tucson Intl.
$394 Roundtrip, found 2 days ago
$394
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jun 24 from O'Hare Intl. to Tucson Intl., returning Thu, Jun 25, priced at $394 found 2 days ago
Wed, Jun 24 - Sun, Jun 28
ORD
O'Hare Intl.
TUS
Tucson Intl.
$397 Roundtrip, found 2 days ago
$397
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jun 24 from O'Hare Intl. to Tucson Intl., returning Sun, Jun 28, priced at $397 found 2 days ago
Wed, Jun 24 - Tue, Jun 30
ORD
O'Hare Intl.
TUS
Tucson Intl.
$404 Roundtrip, found 2 days ago
$404
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jun 24 from O'Hare Intl. to Tucson Intl., returning Tue, Jun 30, priced at $404 found 2 days ago
Wed, Oct 14 - Wed, Oct 21
ORD
O'Hare Intl.
TUS
Tucson Intl.
$405 Roundtrip, found 4 hours ago
$405
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Oct 14 from O'Hare Intl. to Tucson Intl., returning Wed, Oct 21, priced at $405 found 4 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.