American Airlines Flight 3603 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

American Airlines Flight 3603 Route Deals From $98

The cheapest prices found with in the last 7 days for return flights were $206 and $98 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Dec 4 - Sun, Dec 7
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$206 Roundtrip, just found
$206
Roundtrip
just found
Select American Airlines flight, departing Thu, Dec 4 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Sun, Dec 7, priced at $206 just found
Thu, Dec 4 - Mon, Dec 8
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$213 Roundtrip, found 5 days ago
$213
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Dec 4 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Mon, Dec 8, priced at $213 found 5 days ago
Thu, Dec 4 - Sun, Dec 7
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$216 Roundtrip, just found
$216
Roundtrip
just found
Select American Airlines flight, departing Thu, Dec 4 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Sun, Dec 7, priced at $216 just found
Tue, Nov 4 - Wed, Nov 12
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$222 Roundtrip, found 6 days ago
$222
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Nov 4 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Wed, Nov 12, priced at $222 found 6 days ago
Fri, Nov 21 - Sat, Nov 22
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$223 Roundtrip, found 2 days ago
$223
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Nov 21 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Sat, Nov 22, priced at $223 found 2 days ago
Thu, Dec 4 - Sun, Dec 7
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$244 Roundtrip, just found
$244
Roundtrip
just found
Select American Airlines flight, departing Thu, Dec 4 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Sun, Dec 7, priced at $244 just found
Thu, Dec 4 - Mon, Dec 8
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$250 Roundtrip, found 5 days ago
$250
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Dec 4 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Mon, Dec 8, priced at $250 found 5 days ago
Thu, Dec 4 - Sun, Dec 7
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$255 Roundtrip, just found
$255
Roundtrip
just found
Select American Airlines flight, departing Thu, Dec 4 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Sun, Dec 7, priced at $255 just found
Thu, Nov 13 - Sat, Nov 15
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$256 Roundtrip, found 1 day ago
$256
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Nov 13 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Sat, Nov 15, priced at $256 found 1 day ago
Thu, Dec 4 - Sun, Dec 7
GSP
Greenville-Spartanburg Intl.
ORD
O'Hare Intl.
$260 Roundtrip, just found
$260
Roundtrip
just found
Select American Airlines flight, departing Thu, Dec 4 from Greenville-Spartanburg Intl. to O'Hare Intl., returning Sun, Dec 7, priced at $260 just found

Frequently asked questions

What route does flight number AA3603 take?
AA3603 flies direct between CVG Airport and ORD in 1 hour and 31 minutes. It can sometimes be used on other routes though, some of which could be multi-stop flights. Keep an eye out for this when locking in your seat to avoid any confusion.
What kind of plane is on flight number AA3603?
It's more than likely you'll be hopping on board an Embraer RJ145 if you're taking flight AA3603 from Cincinnati - Northern Kentucky Intl. Airport (CVG) to O'Hare Intl. Airport (ORD). It's the most commonly used aircraft model on this popular route.
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 AA3603 flight with Travelocity, please visit our Customer Service Portal.