American Airlines Flight 1991 Deals & Information (2026/2027)

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American Airlines Flight 1991 Route Deals From $247

The cheapest prices found with in the last 7 days for return flights were $368 and $247 for one-way flights to Sioux Falls Regional for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 15 - Mon, May 18
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$368 Roundtrip, found 3 days ago
$368
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, May 15 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Mon, May 18, priced at $368 found 3 days ago
Fri, May 15 - Mon, May 18
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$378 Roundtrip, found 3 days ago
$378
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, May 15 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Mon, May 18, priced at $378 found 3 days ago
Sat, May 2 - Sat, May 9
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$388 Roundtrip, found 2 days ago
$388
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, May 2 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sat, May 9, priced at $388 found 2 days ago
Mon, Jun 1 - Tue, Jun 9
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$389 Roundtrip, found 2 days ago
$389
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 1 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Tue, Jun 9, priced at $389 found 2 days ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$504 Roundtrip, found 3 hours ago
$504
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $504 found 3 hours ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$513 Roundtrip, found 3 hours ago
$513
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $513 found 3 hours ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$545 Roundtrip, found 3 hours ago
$545
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $545 found 3 hours ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$554 Roundtrip, found 3 hours ago
$554
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $554 found 3 hours ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$564 Roundtrip, found 3 hours ago
$564
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $564 found 3 hours ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$567 Roundtrip, found 3 hours ago
$567
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $567 found 3 hours ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$577 Roundtrip, found 3 hours ago
$577
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $577 found 3 hours ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$587 Roundtrip, found 3 hours ago
$587
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $587 found 3 hours ago
Fri, Apr 10 - Sun, Apr 12
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$602 Roundtrip, found 3 hours ago
$602
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Apr 10 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Sun, Apr 12, priced at $602 found 3 hours ago

Frequently asked questions

What route does flight number AA1991 take?
AA1991 flies straight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD). During this trip, expect to be in the air for roughly 4 hours and 12 minutes. Consider booking ahead to get your favorite seat.
What kind of plane is on flight number AA1991?
The route for AA1991 is generally Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to O'Hare Intl. Airport (ORD), and the Airbus A321 is the type of aircraft you'll probably be traveling on.
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 AA1991 flight with Travelocity, please visit our Customer Service Portal.