American Airlines Flight 3691 Deals & Information (2026/2027)

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American Airlines Flight 3691 Route Deals From $72

The cheapest prices found with in the last 7 days for return flights were $204 and $72 for one-way flights to Preston Smith Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jun 15 - Wed, Jun 17
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$204 Roundtrip, found 3 days ago
$204
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Jun 15 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Wed, Jun 17, priced at $204 found 3 days ago
Mon, Jun 15 - Wed, Jun 17
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$240 Roundtrip, found 3 days ago
$240
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Jun 15 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Wed, Jun 17, priced at $240 found 3 days ago
Sat, May 30 - Sun, May 31
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$261 Roundtrip, found 5 days ago
$261
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, May 30 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Sun, May 31, priced at $261 found 5 days ago
Mon, Jun 15 - Wed, Jun 17
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$275 Roundtrip, found 3 days ago
$275
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Jun 15 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Wed, Jun 17, priced at $275 found 3 days ago
Fri, Jun 12 - Sun, Jun 14
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$278 Roundtrip, found 6 days ago
$278
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Jun 12 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Sun, Jun 14, priced at $278 found 6 days ago
Fri, Jun 5 - Sun, Jun 7
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$280 Roundtrip, found 21 hours ago
$280
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Fri, Jun 5 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Sun, Jun 7, priced at $280 found 21 hours ago
Sat, May 30 - Sun, May 31
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$292 Roundtrip, found 5 days ago
$292
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, May 30 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Sun, May 31, priced at $292 found 5 days ago
Sat, May 23 - Mon, May 25
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$298 Roundtrip, found 5 days ago
$298
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, May 23 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Mon, May 25, priced at $298 found 5 days ago
Mon, Jun 15 - Wed, Jun 17
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$309 Roundtrip, found 3 days ago
$309
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Jun 15 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Wed, Jun 17, priced at $309 found 3 days ago
Fri, Jun 5 - Sun, Jun 7
DFW
Dallas-Fort Worth Intl.
LBB
Preston Smith Intl.
$331 Roundtrip, found 21 hours ago
$331
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Fri, Jun 5 from Dallas-Fort Worth Intl. to Preston Smith Intl., returning Sun, Jun 7, priced at $331 found 21 hours ago

Frequently asked questions

What route does flight number AA3691 take?
AA3691 takes a number of routes. The most frequently flown is DFW Airport to AGU, which flies direct. This flight takes roughly 2 hours and 25 minutes. That said, you might find other flights with the same number that are multi-stop.
How often is AA3691 on time?
If you're traveling with American Airlines on flight number AA3691 from Dallas, TX Airport (DFW-Dallas-Fort Worth Intl.) to AGU, your service is on time 85% of the time — when you're running on a tight schedule, it's nice to know that your airline does too. On the odd occasion that there is an unanticipated delay, the average wait time is only 13 minutes. This trip has a 3.7-star rating.
What kind of plane is on flight number AA3691?
AA3691 is a flight number that serves a number of different routes. If you're heading off on its most popular route, DFW to AGU, you'll likely be climbing on board the Embraer 175.
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 AA3691 flight with Travelocity, please visit our Customer Service Portal.