American Airlines Flight 3879 Deals & Information (2025/2026)

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American Airlines Flight 3879 Route Deals From $111

The cheapest prices found with in the last 7 days for return flights were $127 and $111 for one-way flights to Buffalo Niagara Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Aug 7 - Mon, Aug 11
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$127 Roundtrip, found 4 days ago
$127
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Aug 7 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 11, priced at $127 found 4 days ago
Thu, Aug 7 - Mon, Aug 11
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$147 Roundtrip, found 4 days ago
$147
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Aug 7 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 11, priced at $147 found 4 days ago
Mon, Aug 18 - Fri, Aug 22
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$172 Roundtrip, found 4 days ago
$172
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Aug 18 from O'Hare Intl. to Buffalo Niagara Intl., returning Fri, Aug 22, priced at $172 found 4 days ago
Fri, Sep 12 - Tue, Sep 16
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$210 Roundtrip, found 21 hours ago
$210
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Fri, Sep 12 from O'Hare Intl. to Buffalo Niagara Intl., returning Tue, Sep 16, priced at $210 found 21 hours ago
Fri, Sep 12 - Tue, Sep 16
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$228 Roundtrip, found 21 hours ago
$228
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Fri, Sep 12 from O'Hare Intl. to Buffalo Niagara Intl., returning Tue, Sep 16, priced at $228 found 21 hours ago
Tue, Aug 5 - Mon, Aug 11
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$232 Roundtrip, found 8 hours ago
$232
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Aug 5 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 11, priced at $232 found 8 hours ago
Fri, Sep 12 - Tue, Sep 16
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$243 Roundtrip, found 21 hours ago
$243
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Fri, Sep 12 from O'Hare Intl. to Buffalo Niagara Intl., returning Tue, Sep 16, priced at $243 found 21 hours ago
Tue, Aug 5 - Mon, Aug 11
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$247 Roundtrip, found 8 hours ago
$247
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Aug 5 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 11, priced at $247 found 8 hours ago

Frequently asked questions

What route does flight number AA3879 take?
AA3879 is used on multiple routes. Most commonly, AA3879 flies straight from CLT to Springfield-Branson National Airport. If that’s your flight path, you’ll be in the air for approximately 2 hours and 10 minutes.
What kind of plane is on flight number AA3879?
You’re likely to be traveling aboard an Embraer 175 if you’ve booked a fare on flight AA3879 from CLT to Springfield-Branson National Airport (SGF). This is the most commonly used aircraft type 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 AA3879 flight with Travelocity, please visit our Customer Service Portal.