American Airlines Flight AA678 Deals & Information (2025/2026)

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American Airlines Flight 678 Route Deals From $64

The cheapest prices found with in the last 7 days for return flights were $129 and $64 for one-way flights to George Bush Intercontinental for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 28 - Wed, Nov 5
MIA
Miami Intl.
IAH
George Bush Intercontinental
$129 Roundtrip, found 11 hours ago
$129
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Tue, Oct 28 from Miami Intl. to George Bush Intercontinental, returning Wed, Nov 5, priced at $129 found 11 hours ago

Frequently asked questions

What route does flight number AA678 take?
AA678 serves multiple routes, but the most common is between Dane County Regional Airport (MSN) and Phoenix, AZ Airport (PHX-Sky Harbor Intl.). If on a non-stop flight, you'll stroll through arrivals in around 3 hours and 47 minutes. Multi-stop flights can also operate under this number, as can services on other routes.
What kind of plane is on flight number AA678?
If you've booked a seat on flight AA678 from Madison, WI Airport (MSN-Dane County Regional) to Sky Harbor Intl. Airport (PHX), there's a good chance you'll be traveling aboard an Airbus A319. Flight AA678 serves multiple routes, but this is the most popular one.
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 AA678 flight with Travelocity, please visit our Customer Service Portal.