What is the cheapest month to fly from Boston to Idaho Falls?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Boston (BOS) to Idaho Falls (IDA), with fares starting from $254.

What is the lowest current fare from BOS to IDA?

The lowest currently-listed fare from Boston (BOS) to Idaho Falls (IDA) is $254 on 2026-08-12.

Is there a direct flight from Boston to Idaho Falls?

There is currently no non-stop service from BOS to IDA. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Boston to Idaho Falls

Cheapest current fares: $254 in August 2026 on connecting flights.

Last updated August 12, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Boston (BOS) to Idaho Falls (IDA). Refreshed daily.

Boston (BOS) → Idaho Falls (IDA)

August 2026 $254

Frequently asked questions

What is the cheapest month to fly from Boston to Idaho Falls?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Boston (BOS) to Idaho Falls (IDA), with fares starting from $254.
What is the lowest current fare from BOS to IDA?

The lowest currently-listed fare from Boston (BOS) to Idaho Falls (IDA) is $254 on 2026-08-12.
Is there a direct flight from Boston to Idaho Falls?

There is currently no non-stop service from BOS to IDA. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.