American Airlines Flight 5640 Deals & Information (2025/2026)

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American Airlines Flight 5640 Route Deals From $189

The cheapest prices found with in the last 7 days for return flights were $295 and $189 for one-way flights to Capital Region Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jul 16 - Mon, Jul 21
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$295 Roundtrip, found 1 day ago
$295
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jul 16 from Ronald Reagan Washington National to Capital Region Intl., returning Mon, Jul 21, priced at $295 found 1 day ago
Sat, Aug 30 - Mon, Sep 1
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$299 Roundtrip, found 23 hours ago
$299
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Sat, Aug 30 from Ronald Reagan Washington National to Capital Region Intl., returning Mon, Sep 1, priced at $299 found 23 hours ago
Wed, Jul 16 - Mon, Jul 21
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$305 Roundtrip, found 1 day ago
$305
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jul 16 from Ronald Reagan Washington National to Capital Region Intl., returning Mon, Jul 21, priced at $305 found 1 day ago
Sat, Aug 30 - Mon, Sep 1
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$309 Roundtrip, found 23 hours ago
$309
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Sat, Aug 30 from Ronald Reagan Washington National to Capital Region Intl., returning Mon, Sep 1, priced at $309 found 23 hours ago
Wed, Jul 9 - Sat, Jul 12
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$313 Roundtrip, found 1 day ago
$313
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jul 9 from Ronald Reagan Washington National to Capital Region Intl., returning Sat, Jul 12, priced at $313 found 1 day ago
Tue, Sep 30 - Sat, Oct 11
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$315 Roundtrip, found 22 hours ago
$315
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Tue, Sep 30 from Ronald Reagan Washington National to Capital Region Intl., returning Sat, Oct 11, priced at $315 found 22 hours ago
Sat, Aug 30 - Mon, Sep 1
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$324 Roundtrip, found 23 hours ago
$324
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Sat, Aug 30 from Ronald Reagan Washington National to Capital Region Intl., returning Mon, Sep 1, priced at $324 found 23 hours ago
Wed, Jul 16 - Mon, Jul 21
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$345 Roundtrip, found 1 day ago
$345
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jul 16 from Ronald Reagan Washington National to Capital Region Intl., returning Mon, Jul 21, priced at $345 found 1 day ago
Fri, Jul 11 - Sat, Jul 12
DCA
Ronald Reagan Washington National
LAN
Capital Region Intl.
$350 Roundtrip, found 6 days ago
$350
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Jul 11 from Ronald Reagan Washington National to Capital Region Intl., returning Sat, Jul 12, priced at $350 found 6 days ago

Frequently asked questions

What route does flight number AA5640 take?
AA5640 takes a number of routes. The most popular is Washington, DC Airport (DCA-Ronald Reagan Washington National) to Will Rogers World Airport (OKC), which is a direct flight. This flight generally takes 2 hours and 57 minutes. However, there are likely to be other flights with the same number that have one or more stops.
What terminal does AA5640 fly out of?
You'll most likely board the aircraft from Terminal C if you're flying out of National Airport. Flight number AA5640 serves a number of routes, but the direct flight between Washington, DC Airport (DCA-Ronald Reagan Washington National) and Will Rogers World Airport (OKC) is the most popular one.
What kind of plane is on flight number AA5640?
AA5640 is a flight number that is used on a number of routes. If you have a ticket on the busiest route, National Airport to OKC, you're likely to be boarding the Bombardier CRJ900.
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 AA5640 flight with Travelocity, please visit our Customer Service Portal.