Alaska AirlinesDepart07:13
Tue, Nov 10BOS → LIH
12h 53m · 1 stop
$297one way, per person
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- Cheapest fare
- $297
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 12h 53m
Alaska Airlines · Tue, Nov 10
from $297
Usually 1+ stop
8,250 km
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Cheapest month to fly from Boston to Kauai Island
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 Boston to Kauai Island
Boston (BOS) and Kauai Island (LIH) are about 8,250 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 12h 53m. Over the next few months, one-way fares start from $297, 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 Boston to Kauai Island?
The cheapest one-way fare we've seen recently is $297 with Alaska Airlines, departing Tuesday, November 10, 2026.
What is the cheapest month to fly from Boston to Kauai Island?
November 2026 currently has the lowest fares, from $297 one way.
Are there direct flights from Boston to Kauai Island?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Boston to Kauai Island?
The quickest journey we've seen takes about 12h 53m. Boston and Kauai Island are around 8,250 km apart.
Which airlines fly from Boston to Kauai Island?
Recent fares on this route were with Alaska Airlines.
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