Cheap flights from Boise to Watertown

One-way fares from $484 · BOI → ATY · prices found by travellers in the last 48 hours

Compare all dates Watertown → Boise
Cheapest fare
$484

United Airlines · Fri, Nov 13

Cheapest month
November

from $484

Direct flights
Not recently

Usually 1+ stop

Quickest trip
3h 55m

1,520 km

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Cheapest month to fly from Boise to Watertown

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $484

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

United Airlines
Depart10:34 Fri, Nov 13BOI → ATY 3h 56m · 1 stop
$484one way, per person
View deal
See every date in November 2026 →

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Where to stay

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Things to do

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Getting around

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About flights from Boise to Watertown

Boise (BOI) and Watertown (ATY) are about 1,520 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 55m. Over the next few months, one-way fares start from $484, 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 Boise to Watertown?

The cheapest one-way fare we've seen recently is $484 with United Airlines, departing Friday, November 13, 2026.

What is the cheapest month to fly from Boise to Watertown?

November 2026 currently has the lowest fares, from $484 one way.

Are there direct flights from Boise to Watertown?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Boise to Watertown?

The quickest journey we've seen takes about 3h 55m. Boise and Watertown are around 1,520 km apart.

Which airlines fly from Boise to Watertown?

Recent fares on this route were with United Airlines.

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