American Airlines Flight DL4378 Deals & Information (2024/2025)

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

American Airlines Flight 4378 Route Deals From $95

The cheapest prices found with in the last 7 days for return flights were $127 and $95 for one-way flights to Raleigh - Durham Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number AA4378 take?
AA4378 takes multiple routes. The most popular is between Bloomington, IL Airport (BMI-Central Illinois Regional) and O’Hare Intl. Airport (ORD), which is a direct flight. This flight takes about 1 hour and 4 minutes. However, there may be other flights with the same number that are multi-stop.
What kind of plane is on flight number AA4378?
Chances are you’ll travel aboard the Embraer RJ145 if you’ve booked a seat on flight number AA4378 from Central Illinois Regional Airport (BMI) to O’Hare Airport. This is the most commonly used aircraft model on this particular 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 AA4378 flight with Travelocity, please visit our Customer Service Portal.