United AirlinesDepart11:12
Sat, Nov 14RAP → ATY
3h 23m · 1 stop
$470one way, per person
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- Cheapest fare
- $470
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 3h 23m
United Airlines · Sat, Nov 14
from $470
Usually 1+ stop
490 km
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Cheapest month to fly from Rapid City to Watertown
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Rapid City to Watertown
Rapid City (RAP) and Watertown (ATY) are about 490 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 3h 23m. Over the next few months, one-way fares start from $470, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Rapid City to Watertown?
The cheapest one-way fare we've seen recently is $470 with United Airlines, departing Saturday, November 14, 2026.
What is the cheapest month to fly from Rapid City to Watertown?
November 2026 currently has the lowest fares, from $470 one way.
Are there direct flights from Rapid City to Watertown?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Rapid City to Watertown?
The quickest journey we've seen takes about 3h 23m. Rapid City and Watertown are around 490 km apart.
Which airlines fly from Rapid City to Watertown?
Recent fares on this route were with United Airlines.
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