Question 1

How popular is this Kaua'i to O'ahu flight route?

Accepted Answer

This flight path from Kaua'i to O'ahu was viewed by 22 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Question 2

How long is the flight from Kaua'i to O'ahu?

Accepted Answer

A quick flight from Kaua'i to O'ahu can take about 37m. Alaska Airlines provides one of the quickest options available for as low as $138. There are 102 mi between Kaua'i and O'ahu. Generally, flights for this route are nonstop.

Question 3

What are the cheapest airlines to fly from Kaua'i to O'ahu one-way?

Accepted Answer

The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $49. However, be on the lookout for offers from Southwest and Hawaiian Airlines, as they are both options that can get you from Kaua'i to O'ahu for a low price.

Question 4

How far ahead should I book a flight from Kaua'i to O'ahu?

Accepted Answer

The price you pay for your flight from Kaua'i to O'ahu may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 5

What is the cheapest month to book a flight from Kaua'i to O'ahu?

Accepted Answer

Currently, March is the cheapest month in which you can book a flight from Kaua'i to O'ahu (average of $150). Flying from Kaua'i to O'ahu in October is currently the most expensive (average of $184). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 6

What is the cheapest day to fly from Kaua'i to O'ahu?

Accepted Answer

Travelers seeking maximum savings on their Kaua'i to O'ahu flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Question 7

Weekly flight availability from Kaua'i to O'ahu

Accepted Answer

The most flights from zzFUS to zzFUW are scheduled on a Friday (58 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (27 on average).

Question 8

E

Accepted Answer

In terms of precipitation, rainfall in O'ahu ranges from 0.3 - 3.2 inches per month. December is typically the wettest month, when rainfall can reach 3.2 in. June is typically the driest time to visit O'ahu when rainfall is around 0.3 in.

Question 9

E

Accepted Answer

If weather is an important factor for your trip to O'ahu, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 73.4 F).

Question 10

What is the cheapest time of day to fly from FUS to FUW?

Accepted Answer

When flying from Kaua'i to O'ahu, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 68% versus a flight at noon.

Question 11

Can I find deals for flights from Kaua'i to O'ahu that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Kaua'i to O'ahu flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 12

How can I find direct flights from Kaua'i to O'ahu?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kaua'i to O'ahu.

Question 13

Can I find deals for business class flights from Kaua'i to O'ahu?

Accepted Answer

Yes. Cheapflights offers flight deals from Kaua'i to O'ahu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$121 (SmartFares)
One-way from	$69 (Hawaiian Airlines)
Popular in	October
Cheapest in	March
Average price	$179
Good round-trip deal	$179 or less
Good one-way deal	$125 or less

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$78	Average$174	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$98	Average$180	FlexibilityNo cancel fee	On-time75%
Hawaiian Airlines	Cheapest$125	Average$179	FlexibilityNo cancel fee	On-time85%

Cheap flights from Kaua'i to O'ahu

Find cheap flights from Kaua'i to O'ahu with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Kaua'i to O'ahu

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Insights

How far ahead should I book a flight from Kaua'i to O'ahu?

The price you pay for your flight from Kaua'i to O'ahu may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Kaua'i to O'ahu?

What is the cheapest time of day to fly from FUS to FUW?

When flying from Kaua'i to O'ahu, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 68% versus a flight at noon.

What is the cheapest day to fly from Kaua'i to O'ahu?

Travelers seeking maximum savings on their Kaua'i to O'ahu flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Kaua'i to O'ahu

The most flights from zzFUS to zzFUW are scheduled on a Friday (58 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (27 on average).

Reviews of airlines servicing O'ahu

Get insights into the airlines that provide service to O'ahu. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'ahu. Reviews last updated August 3, 2026.

Get a feel of what it's like to fly with Southwest,Alaska Airlines, andHawaiian Airlines from Kaua'i to O'ahu by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How popular is this Kaua'i to O'ahu flight route?

How long is the flight from Kaua'i to O'ahu?

What are the cheapest airlines to fly from Kaua'i to O'ahu one-way?

Can I find deals for flights from Kaua'i to O'ahu that include hotel bookings?

How can I find direct flights from Kaua'i to O'ahu?

Can I find deals for business class flights from Kaua'i to O'ahu?

What is the cheapest month to book a flight from Kaua'i to O'ahu?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kaua'i to O'ahu

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to O'ahu by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Kaua'i to O'ahu by cabin class

Find flights from Kaua'i to O'ahu, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Kaua'i and O'ahu flights

Browse other Kaua'i and O'ahu flight options. Last updated on August 3, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top 3 airlines flying from Kaua'i to O'ahu

100% Free

Book with Flexibility

Travel Smart