American Airlines Flight AA4557 Deals & Information (2025/2026)

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American Airlines Flight 4557 Route Deals From $69

The cheapest prices found with in the last 7 days for return flights were $182 and $69 for one-way flights to Buffalo Niagara Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 15 - Tue, Jul 22
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$182 Roundtrip, found 6 days ago
$182
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Jul 15 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Tue, Jul 22, priced at $182 found 6 days ago
Wed, Jul 16 - Sat, Jul 19
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$194 Roundtrip, found 6 days ago
$194
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Jul 16 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Sat, Jul 19, priced at $194 found 6 days ago
Tue, Jul 15 - Tue, Jul 22
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$198 Roundtrip, found 6 days ago
$198
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Jul 15 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Tue, Jul 22, priced at $198 found 6 days ago
Wed, Jul 9 - Sat, Jul 12
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$204 Roundtrip, found 2 days ago
$204
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jul 9 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Sat, Jul 12, priced at $204 found 2 days ago
Fri, Aug 22 - Mon, Aug 25
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$207 Roundtrip, found 3 hours ago
$207
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Mon, Aug 25, priced at $207 found 3 hours ago
Tue, Jul 15 - Tue, Jul 22
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$213 Roundtrip, found 6 days ago
$213
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Jul 15 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Tue, Jul 22, priced at $213 found 6 days ago
Tue, Aug 5 - Fri, Aug 8
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$214 Roundtrip, found 1 day ago
$214
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 5 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Fri, Aug 8, priced at $214 found 1 day ago
Fri, Aug 22 - Mon, Aug 25
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$217 Roundtrip, found 3 hours ago
$217
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Mon, Aug 25, priced at $217 found 3 hours ago
Mon, Sep 29 - Sun, Oct 12
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$218 Roundtrip, found 5 days ago
$218
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Sep 29 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Sun, Oct 12, priced at $218 found 5 days ago
Fri, Aug 22 - Mon, Aug 25
DCA
Ronald Reagan Washington National
BUF
Buffalo Niagara Intl.
$224 Roundtrip, found 3 hours ago
$224
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Buffalo Niagara Intl., returning Mon, Aug 25, priced at $224 found 3 hours ago

Frequently asked questions

What route does flight number AA4557 take?
AA4557 takes a number of routes. The most frequently flown is between LaGuardia Airport and STL, which is a direct flight. This service usually takes 2 hours and 47 minutes. That said, there may possibly be other flights with the same number that are multi-stop.
How often is AA4557 on time?
If you're taking to the skies with American Airlines on flight number AA4557 from LGA to St. Louis, MO Airport (STL-Lambert-St. Louis Intl.), your service will be on time 95% of the time --- when you're running on a tight schedule, it's a relief knowing that your airline does too. In the rare event of an unforeseen delay, the average delay is just 1 hour and 33 minutes. This journey has a 2.7-star rating.
What terminal does AA4557 fly out of?
If you're flying out of LaGuardia Airport (LGA), there's a good chance you'll board the aircraft from Terminal B. The most frequented route for flight number AA4557 is LaGuardia Airport to Lambert Field, which is a direct flight.
What kind of plane is on flight number AA4557?
If you're taking flight AA4557 from New York, NY Airport (LGA-LaGuardia) to Lambert-St. Louis Intl. Airport (STL), you'll most likely be cruising aboard the Embraer 170. Flight AA4557 serves a number of different routes, but this is the most popular.
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 AA4557 flight with Travelocity, please visit our Customer Service Portal.