The cheapest times to fly from BOI to LIH are

  • January 1st to March 4th (except the week of February 12th)
  • April 23rd to May 20th (except the week of April 30th)
  • August 13th to November 18th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from BOI to LIH is early September. Prices can be as high as $1147 for Saturday flights during late December, or as low as $409 for Wednesday flights around early September.


When to Fly to Kauai

Flying from Boise, ID (BOI) to Lihue, HI (LIH) will usually cost between $444 to $865 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early September with an average ticket price of $465. Due to high demand the most expensive time to fly is late December, with an average price of $934. Planning your trip to low-cost times can easily save you $470 on economy flights and even more on first-class flights. Generally, any price below $559 can be considered a good price for a round-trip BOI to LIH flight.

See below for a graph of average weekly prices for the BOI to LIH route. All prices are for round-trip tickets in USD.

BOI to LIH Flight Prices

Compared to other flights, the BOI to LIH flight is cheaper than the average and costs less than the average flight leaving from Boise. The average price per mile (for a direct flight) is $0.12, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $184 (25%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $521. Return trip prices are from the LIH to BOI flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from BOI to LIH can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 6 hour 9 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from BOI to LIH while comparing.

Destination alternative #1: Daniel K Inouye International Airport (HNL) in Honolulu, HI

  • 102 miles (164 km) away from LIH
  • Usually 13.77% less expensive than LIH
  • 1-layover flights available

See BOI to HNL flights


Flight Questions Answered

Still have questions about flying from BOI to LIH? We’ve got answers.

Which airlines fly this route?

You can find 6 major airlines flying this route most often: Alaska, American, Delta, Hawaiian, Southwest, United, and potentially more during busy seasons.

How far away is it from Lihue Airport to Boise Air Terminal Airport?

The distance between the two airports is roughly 2870 miles or 4619 kilometers.

How long does it take to fly from BOI to LIH?

The real-world flight time for a nonstop BOI to LIH flight is about 6 hour 9 minutes.

How many flights go between Boise, ID and Lihue, HI?

It depends on the day of the week and the date, but a typical day might have around 78 available flights from BOI to LIH.


Airport Location Info


Departing Airport

Origination codeBOI
Origination airport nameBoise Air Terminal Airport
CityBoise, ID
Countrythe United States

Return Airport

Destination codeLIH
Destination airport nameLihue Airport
CityLihue, HI
Countrythe United States


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.