Are there nonstop flights from Ottawa (YOW) to Tampa (TPA)?

Yes. Porter Airlines, Air Canada Rouge fly this route. Flight time is about 2h 53m.

What is the fastest connection from Ottawa (YOW) to Tampa (TPA)?

via Washington ≈ 3h 23m, via Washington ≈ 3h 24m, via Newark ≈ 3h 30m (estimated flying time, excluding layovers).

from 15,000 ANA miles (economy, one way, based on the published award charts).

Ottawa Macdonald-Cartier International Airport (YOW) to Tampa International Airport (TPA)・2,022 km

Nonstop flights available (2 airlines). Flight time about 2h 53m. Nonstop return flights also operate.

With milesANA 15,000 miles+ (via YYZ)Economy, one way, estimate. Tap a connection for miles by cabin.

13 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.