The average bus between Ottawa and Buffalo takes 9h 38m and the fastest bus takes 8h 45m. The bus service runs several times per day from Ottawa to Buffalo. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run 4 times a day between Ottawa and Buffalo. The earliest departure is at 1:00 AM at night, and the last departure from Ottawa is at 11:00 PM which arrives into Buffalo at 10:20 AM. All services require a transfer, and take on average 9h 38m. The schedules shown below are for the next available departures.

9h 20m • 1 change

10h 20m • 1 change

9h 10m • 1 change
Arrives next day

8h 45m • 1 change

9h 20m • 1 change

10h 20m • 1 change

9h 10m • 1 change
Arrives next day

8h 45m • 1 change

9h 20m • 1 change

10h 20m • 1 change

9h 10m • 1 change
Arrives next day

8h 45m • 1 change

9h 20m • 1 change

9h 25m • 1 change
Arrives next day

8h 45m • 1 change
Arrives next day

11h 20m • 1 change

10h 20m • 1 change

9h 10m • 1 change
Arrives next day

8h 45m • 1 change
Arrives next day

11h 20m • 1 change
Want to know about travelling from Ottawa to Buffalo? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Ottawa to Buffalo. However, there are services departing from Ottawa station and arriving at Buffalo station via Toronto. The journey, including transfers, takes approximately 9h 38m.
Ottawa to Buffalo bus services, operated by Flixbus USA, depart from Ottawa station.
Ottawa to Buffalo bus services, operated by Flixbus USA, arrive at Buffalo station.
Book your Ottawa to Buffalo bus tickets online with Flixbus USA, Greyhound USA and 2 other operators.
The distance between Ottawa and Buffalo is 378.3 km. The road distance is 591 km.
You can take a bus from Ottawa to Buffalo via Toronto in around 9h 25m.