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 $350 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 29 - Tue, Jun 2
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$350 Roundtrip, found 20 hours ago
$350
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Fri, May 29 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Tue, Jun 2, priced at $350 found 20 hours ago
Fri, May 29 - Tue, Jun 2
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$360 Roundtrip, found 20 hours ago
$360
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Fri, May 29 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Tue, Jun 2, priced at $360 found 20 hours ago
Fri, May 15 - Mon, May 18
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$368 Roundtrip, found 6 days ago
$368
Roundtrip
found 6 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 6 days ago
Fri, May 15 - Mon, May 18
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$378 Roundtrip, found 6 days ago
$378
Roundtrip
found 6 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 6 days ago
Sat, May 30 - Mon, Jun 1
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$387 Roundtrip, found 20 hours ago
$387
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Sat, May 30 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Mon, Jun 1, priced at $387 found 20 hours ago
Sat, May 30 - Mon, Jun 1
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$389 Roundtrip, found 20 hours ago
$389
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Sat, May 30 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Mon, Jun 1, priced at $389 found 20 hours ago
Fri, May 29 - Tue, Jun 2
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$398 Roundtrip, found 20 hours ago
$398
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Fri, May 29 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Tue, Jun 2, priced at $398 found 20 hours ago
Sat, May 30 - Mon, Jun 1
DFW
Dallas-Fort Worth Intl.
FSD
Sioux Falls Regional
$399 Roundtrip, found 20 hours ago
$399
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Sat, May 30 from Dallas-Fort Worth Intl. to Sioux Falls Regional, returning Mon, Jun 1, priced at $399 found 20 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.