Cheap Flights from Ontario International to Hilo

Compare Ontario International to Hilo flight deals

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Flight deals from Ontario International to Hilo

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Hilo Airport? If you want to travel next month, return fares start from $802. Find the lowest prices on one-way and return tickets right here.

Hilo.$576 per passenger.Departing Tue, 17 Nov, returning Tue, 24 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 17 Nov, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Tue, 24 Nov, arriving in Ontario International.Price includes taxes and charges.From $576, select.

Hilo.$578 per passenger.Departing Mon, 14 Sep, returning Thu, 17 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 14 Sep, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Thu, 17 Sep, arriving in Ontario International.Price includes taxes and charges.From $578, select.

Hilo.$578 per passenger.Departing Tue, 8 Dec, returning Tue, 15 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 8 Dec, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Tue, 15 Dec, arriving in Ontario International.Price includes taxes and charges.From $578, select.

Hilo.$614 per passenger.Departing Mon, 11 Jan, returning Fri, 15 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 11 Jan, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Fri, 15 Jan, arriving in Ontario International.Price includes taxes and charges.From $614, select.

Hilo.$679 per passenger.Departing Wed, 14 Oct, returning Thu, 22 Oct.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 14 Oct, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Thu, 22 Oct, arriving in Ontario International.Price includes taxes and charges.From $679, select.

Hilo.$733 per passenger.Departing Mon, 28 Sep, returning Mon, 5 Oct.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 28 Sep, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Mon, 5 Oct, arriving in Ontario International.Price includes taxes and charges.From $733, select.

Hilo.$802 per passenger.Departing Thu, 13 Aug, returning Thu, 27 Aug.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 13 Aug, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Thu, 27 Aug, arriving in Ontario International.Price includes taxes and charges.From $802, select.

Hilo.$819 per passenger.Departing Mon, 15 Feb, returning Mon, 22 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 15 Feb, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Mon, 22 Feb, arriving in Ontario International.Price includes taxes and charges.From $819, select.

Hilo.$836 per passenger.Departing Tue, 20 Oct, returning Wed, 11 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 20 Oct, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Wed, 11 Nov, arriving in Ontario International.Price includes taxes and charges.From $836, select.

Hilo.$837 per passenger.Departing Sat, 29 Aug, returning Tue, 1 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 29 Aug, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Tue, 1 Sep, arriving in Ontario International.Price includes taxes and charges.From $837, select.

Hilo.$914 per passenger.Departing Tue, 23 Feb, returning Mon, 1 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 23 Feb, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Mon, 1 Mar, arriving in Ontario International.Price includes taxes and charges.From $914, select.

Hilo.$1,128 per passenger.Departing Tue, 1 Sep, returning Mon, 30 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 1 Sep, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Mon, 30 Nov, arriving in Ontario International.Price includes taxes and charges.From $1,128, select.

Hilo.$1,147 per passenger.Departing Fri, 31 Jul, returning Sun, 2 Aug.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 31 Jul, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Sun, 2 Aug, arriving in Ontario International.Price includes taxes and charges.From $1,147, select.

Hilo.$1,169 per passenger.Departing Sat, 13 Mar, returning Tue, 16 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 13 Mar, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Tue, 16 Mar, arriving in Ontario International.Price includes taxes and charges.From $1,169, select.

Hilo.$1,611 per passenger.Departing Fri, 18 Dec, returning Fri, 8 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 18 Dec, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Fri, 8 Jan, arriving in Ontario International.Price includes taxes and charges.From $1,611, select.

Hilo.$1,862 per passenger.Departing Thu, 28 Jan, returning Tue, 2 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 28 Jan, arriving in Hilo.Inbound indirect flight with Southwest Airlines, departs from Hilo on Tue, 2 Feb, arriving in Ontario International.Price includes taxes and charges.From $1,862, select.

Find the cheapest month to fly from Ontario International to Hilo

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Hilo flights are currently cheapest in November.

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Ontario International to Hilo: Alternative routes

Compare routes from Ontario International to Hilo below. You may find an airport to fly into that's cheaper, faster, or easier than Hilo.

Hilo

3km from central Hilo

ClosestCheapest

from $576

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Kamuela

69km from central Hilo

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Ontario to Hilo: Flight information

The things to know before you go.

Cheapest flight found	$576
Cheapest month to fly	November

Finding cheap flights from Ontario International to Hilo: Frequently asked questions

How much are return flights from Ontario International to Hilo?

The best price we found for a return flight from Ontario International to Hilo is $576. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Ontario International to Hilo?

Currently, there are no airlines that fly direct from Ontario International to Hilo. But we found flights with one or more stops from $576.

How many flights are there a week from Ontario International to Hilo?

As of July 2026, there are no flights flying from Ontario International to Hilo.

When is the cheapest time to fly from Ontario International to Hilo?

The cheapest month to fly from Ontario International to Hilo is usually November.

Which upcoming date is cheapest to fly from Ontario International Airport to Hilo Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Hilo Airport on Tuesday, 17 November 2026.

Can I get a direct flight from Ontario International Airport to Hilo Airport?

No airlines currently offer direct flights between Ontario International Airport and Hilo Airport. Most routes have one or more stops.

How can I find the best flight deal to Hilo?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Hilo but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Hilo?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Hilo is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Ontario International Airport to Hilo with?

Currently, Southwest Airlines offers the cheapest flight tickets to Hilo.

Flying from Ontario International Airport (ONT) to Hilo Airport (ITO): what you need to know

Your ONT to ITO flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
Flying during a peak time like July? Public holidays and other high seasons can lead to longer queues and delays at security. Play things extra safe and arrive up to four hours ahead of international flights and two hours before a domestic departure.
Explore another city along the way or simply break up your flight with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Ontario International Airport to Hilo Airport. Many passengers pass through Honolulu International Airport when flying between ONT and ITO.

How to find the cheapest flights from Ontario International Airport (ONT) to Hilo Airport (ITO)

$288 is currently the best price for a one-way Ontario International Airport to Hilo Airport flight. A return flight starts at $576. These prices may change based on demand and availability.
Don't leave everything to the last moment. You're more likely to find cheap tickets from ONT to ITO if you book in advance. Airlines often have some excellent early bird discounts.
If you're willing to be flexible with your travel plans, use the 'Whole month' search tool. It'll find the cheapest price across the month when searching for your flight from Ontario International Airport to Hilo Airport.
You don't need to check every day to find out if fares have dropped when you create a Price Alert. We'll let you know as soon as there's a change in price on cheap flights from ONT to ITO.
Lock in the right flight for you by using the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Ontario International Airport to Hilo Airport, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and number of stops.

Handy information about Ontario International Airport (ONT)

You'll find ONT at 2900 E. Airport Drive.
83% of flights leaving Ontario International Airport land at their destination according to schedule. With its solid on-time performance, you're unlikely to experience delays when flying out of ONT.
Central Ontario to Ontario International Airport is approximately 10 kilometres. Depending on traffic, it'll take about 15 minutes to get there if you're ride-sharing, catching a taxi or driving.
You can expect a journey time of about 45 minutes when using public transport.
Booked an early flight from Ontario International Airport to Hilo Airport? Avoid rushing to the airport (and sneak in some extra precious sleep) by picking one of these hotels near ONT:

Arriving at Hilo Airport (ITO)

Book a hotel near ITO if you're catching a late Ontario International Airport to Hilo Airport flight. Check in to one of these options and avoid the hassle of a long transfer:
Begin your adventure by picking up a Hilo Airport rental car. Grab a set of wheels from Dollar, Hertz or Thrifty and explore beyond Hilo's usual tourist stops.
For the best deal, book your vehicle from Hilo Airport around one week before you travel.

Getting from Hilo Airport (ITO) to central Hilo

Hilo Airport is roughly 6 kilometres from the centre of Hilo. Driving there takes about 15 minutes.
If you're travelling on public transport, expect a journey time of roughly 25 minutes.

When to fly to Hilo Airport (ITO)

It's time to work out your trip dates for your flight from Ontario International Airport to Hilo Airport. September is the most popular month to head to Hilo. If you want a more low-key vibe, go in February.
When reserving your flight from Ontario International Airport to Hilo Airport, think about the type of weather you enjoy. October is the warmest month in Hilo, with the temperature ranging from 19ºC to 26ºC.
Look for cheap tickets from ONT to ITO in March if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between 16ºC and 23ºC on average.

Explore more of the United States

You've visited Hilo, now it's time to discover other corners of the United States. Travel around 338 kilometres north-west to Honolulu to tick off its must-visit sights. From Pacific Ocean to Waikiki Beach and Pearl Harbour, you'll have a packed itinerary ahead.