American Airlines Flight 4321 Deals & Information (2026/2027)

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American Airlines Flight 4321 Route Deals From $151

The cheapest prices found with in the last 7 days for return flights were $208 and $151 for one-way flights to Waterloo Regional for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Apr 24 - Sat, Apr 25
ORD
O'Hare Intl.
ALO
Waterloo Regional
$208 Roundtrip, found 6 days ago
$208
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Apr 24 from O'Hare Intl. to Waterloo Regional, returning Sat, Apr 25, priced at $208 found 6 days ago
Fri, Apr 24 - Sat, Apr 25
ORD
O'Hare Intl.
ALO
Waterloo Regional
$249 Roundtrip, found 6 days ago
$249
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Apr 24 from O'Hare Intl. to Waterloo Regional, returning Sat, Apr 25, priced at $249 found 6 days ago
Fri, Apr 24 - Sat, Apr 25
ORD
O'Hare Intl.
ALO
Waterloo Regional
$311 Roundtrip, found 1 day ago
$311
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Apr 24 from O'Hare Intl. to Waterloo Regional, returning Sat, Apr 25, priced at $311 found 1 day ago
Fri, Apr 24 - Sat, Apr 25
ORD
O'Hare Intl.
ALO
Waterloo Regional
$345 Roundtrip, found 6 days ago
$345
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Apr 24 from O'Hare Intl. to Waterloo Regional, returning Sat, Apr 25, priced at $345 found 6 days ago
Fri, Apr 24 - Sat, Apr 25
ORD
O'Hare Intl.
ALO
Waterloo Regional
$383 Roundtrip, found 1 day ago
$383
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Apr 24 from O'Hare Intl. to Waterloo Regional, returning Sat, Apr 25, priced at $383 found 1 day ago
Fri, Apr 24 - Sat, Apr 25
ORD
O'Hare Intl.
ALO
Waterloo Regional
$388 Roundtrip, found 6 days ago
$388
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Apr 24 from O'Hare Intl. to Waterloo Regional, returning Sat, Apr 25, priced at $388 found 6 days ago
Wed, Apr 22 - Fri, Apr 24
ORD
O'Hare Intl.
ALO
Waterloo Regional
$452 Roundtrip, found 6 days ago
$452
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Apr 22 from O'Hare Intl. to Waterloo Regional, returning Fri, Apr 24, priced at $452 found 6 days ago
Fri, Apr 24 - Sat, Apr 25
ORD
O'Hare Intl.
ALO
Waterloo Regional
$471 Roundtrip, found 6 days ago
$471
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Apr 24 from O'Hare Intl. to Waterloo Regional, returning Sat, Apr 25, priced at $471 found 6 days ago
Wed, Apr 22 - Fri, Apr 24
ORD
O'Hare Intl.
ALO
Waterloo Regional
$522 Roundtrip, found 6 days ago
$522
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Apr 22 from O'Hare Intl. to Waterloo Regional, returning Fri, Apr 24, priced at $522 found 6 days ago
Fri, Apr 24 - Sat, Apr 25
ORD
O'Hare Intl.
ALO
Waterloo Regional
$554 Roundtrip, found 1 day ago
$554
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Apr 24 from O'Hare Intl. to Waterloo Regional, returning Sat, Apr 25, priced at $554 found 1 day ago

Frequently asked questions

What route does flight number AA4321 take?
You'll be arriving into Bishop Intl. Airport (FNT) from ORD if you're traveling on flight number AA4321. You'll be in the sky for 1 hour and 8 minutes during this journey. It's also worthwhile noting that the service conveniently travels direct.
What terminal does AA4321 fly out of?
You'll likely be hopping on the plane at Terminal 3 if you're booked on AA4321 direct from O'Hare Intl. Airport (ORD) to Bishop Intl. Airport.
What kind of plane is on flight number AA4321?
There's a good chance you'll be cruising aboard the Embraer RJ145 if you're booked on flight number AA4321. This flight almost always sets off from O'Hare Airport and comes in to land at Bishop Intl. Airport.
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 AA4321 flight with Travelocity, please visit our Customer Service Portal.