Cheap flights from Kalispell to Boston

One-way fares from $259 · FCA → BOS · prices found by travellers in the last 48 hours

Compare all dates Boston → Kalispell
Cheapest fare
$259

Alaska Airlines · Sun, Nov 15

Cheapest month
November

from $259

Direct flights
Not recently

Usually 1+ stop

Quickest trip
6h 58m

3,390 km

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Cheapest month to fly from Kalispell to Boston

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

  1. November 2026 Cheapest $259

Cheapest dates in November 2026

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

Alaska Airlines
Depart13:55 Sun, Nov 15FCA → BOS 6h 58m · 1 stop
$259one way, per person
View deal
See every date in November 2026 →

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Getting around

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About flights from Kalispell to Boston

Kalispell (FCA) and Boston (BOS) are about 3,390 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 6h 58m. Over the next few months, one-way fares start from $259, 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 Kalispell to Boston?

The cheapest one-way fare we've seen recently is $259 with Alaska Airlines, departing Sunday, November 15, 2026.

What is the cheapest month to fly from Kalispell to Boston?

November 2026 currently has the lowest fares, from $259 one way.

Are there direct flights from Kalispell to Boston?

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

How long is the flight from Kalispell to Boston?

The quickest journey we've seen takes about 6h 58m. Kalispell and Boston are around 3,390 km apart.

Which airlines fly from Kalispell to Boston?

Recent fares on this route were with Alaska Airlines.

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