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286 € Cheap Flights from Ontario International to Charleston

Compare Ontario International to Charleston flight deals

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Flight deals from Ontario International to Charleston

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Charleston Airport? If you want to travel next month, return fares start from 290 €. Find the lowest prices on one-way and return tickets right here.
Charleston.286 € per passenger.Departing Tue, 29 Sep, returning Tue, 6 Oct.Return flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 29 Sep, arriving in Charleston.Inbound indirect flight with Breeze Airways, departs from Charleston on Tue, 6 Oct, arriving in Ontario International.Price includes taxes and charges.From 286 €, select.
Charleston.288 € per passenger.Departing Tue, 27 Oct, returning Tue, 3 Nov.Return flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 27 Oct, arriving in Charleston.Inbound indirect flight with Breeze Airways, departs from Charleston on Tue, 3 Nov, arriving in Ontario International.Price includes taxes and charges.From 288 €, select.
Charleston.290 € per passenger.Departing Thu, 5 Nov, returning Mon, 9 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 5 Nov, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Mon, 9 Nov, arriving in Ontario International.Price includes taxes and charges.From 290 €, select.
Charleston.290 € per passenger.Departing Sat, 24 Oct, returning Wed, 28 Oct.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 24 Oct, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Wed, 28 Oct, arriving in Ontario International.Price includes taxes and charges.From 290 €, select.
Charleston.290 € per passenger.Departing Sat, 22 Aug, returning Wed, 26 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Sat, 22 Aug, arriving in Charleston.Inbound indirect flight with Delta, departs from Charleston on Wed, 26 Aug, arriving in Ontario International.Price includes taxes and charges.From 290 €, select.
Charleston.291 € per passenger.Departing Mon, 31 Aug, returning Thu, 3 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 31 Aug, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Thu, 3 Sep, arriving in Ontario International.Price includes taxes and charges.From 291 €, select.
Charleston.291 € per passenger.Departing Tue, 1 Sep, returning Thu, 3 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 1 Sep, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Thu, 3 Sep, arriving in Ontario International.Price includes taxes and charges.From 291 €, select.
Charleston.296 € per passenger.Departing Tue, 8 Dec, returning Wed, 16 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 8 Dec, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Wed, 16 Dec, arriving in Ontario International.Price includes taxes and charges.From 296 €, select.
Charleston.365 € per passenger.Departing Wed, 25 Nov, returning Wed, 2 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 25 Nov, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Wed, 2 Dec, arriving in Ontario International.Price includes taxes and charges.From 365 €, select.
Charleston.396 € per passenger.Departing Fri, 1 Jan, returning Sat, 9 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 1 Jan, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Sat, 9 Jan, arriving in Ontario International.Price includes taxes and charges.From 396 €, select.
Charleston.421 € per passenger.Departing Mon, 18 Jan, returning Wed, 10 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 18 Jan, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Wed, 10 Feb, arriving in Ontario International.Price includes taxes and charges.From 421 €, select.
Charleston.466 € per passenger.Departing Mon, 28 Dec, returning Sat, 2 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 28 Dec, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Sat, 2 Jan, arriving in Ontario International.Price includes taxes and charges.From 466 €, select.
Charleston.614 € per passenger.Departing Sat, 25 Jul, returning Wed, 29 Jul.Return flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 25 Jul, arriving in Charleston.Inbound indirect flight with Breeze Airways, departs from Charleston on Wed, 29 Jul, arriving in Ontario International.Price includes taxes and charges.From 614 €, select.
Charleston.701 € per passenger.Departing Fri, 31 Jul, returning Wed, 5 Aug.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 31 Jul, arriving in Charleston.Inbound indirect flight with Southwest Airlines, departs from Charleston on Wed, 5 Aug, arriving in Ontario International.Price includes taxes and charges.From 701 €, select.

Find the cheapest month to fly from Ontario International to Charleston

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Charleston flights are currently cheapest in August.
Jul
from 614 €
Aug
from 290 €
Sep
from 291 €
Oct
from 290 €
Nov
from 290 €
Dec
from 296 €
Jan
from 396 €
Feb
Find prices
Mar
Find prices
Apr
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May
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Jun
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Ontario International to Charleston: Alternative routes

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

Charleston

17km from central Charleston
ClosestCheapest
from 286 €
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Ontario to Charleston: Flight information

The things to know before you go.
Cheapest flight found286 €
Cheapest month to flySeptember

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

The best price we found for a return flight from Ontario International to Charleston is 286 €. 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.
Currently, there are no airlines that fly direct from Ontario International to Charleston. But we found flights with one or more stops from 286 €.
As of July 2026, there are no flights flying from Ontario International to Charleston.
The cheapest month to fly from Ontario International to Charleston is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Charleston Airport on Tuesday, 29 September 2026.
No airlines currently offer direct flights between Ontario International Airport and Charleston Airport. Most routes have one or more stops.
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 Charleston 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.

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

Currently, Frontier Airlines offers the cheapest flight tickets to Charleston.

Travelling from Ontario International Airport (ONT) to Charleston Airport (CHS): what you need to know

  • Charleston is three hours ahead of Ontario and follows the UTC-5 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Show up at the airport on time to catch your ONT to CHS flight.

  • Flying during a peak month like July? Public holidays and other popular seasons can mean longer queues and delays at security. Play things extra safe and get there up to four hours ahead of an international flight and two hours before domestic departures.

  • We make it a piece of cake to book a flight with a stopover. To see your options for tickets from Ontario International Airport to Charleston Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to explore your chosen city. Popular stopovers between ONT and CHS include:

    • Atlanta Hartsfield-Jackson Airport

    • Dallas Fort Worth International Airport

    • Dallas Love Field Airport

How to find the cheapest flights from Ontario International Airport (ONT) to Charleston Airport (CHS)

  • The cheapest price we've seen for a one-way Ontario International Airport to Charleston Airport flight is 143 €. A return ticket right now is 286 €. Depending on the availability when you book, these fares can change.

  • It's usually best to book as early as possible if you're hoping to get cheap tickets from ONT to CHS. That's because airlines change prices based on demand, which tends to increase closer to the date of departure.

  • The 'Whole month' tool shows you the cheapest flights from Ontario International Airport to Charleston Airport throughout the month. It's a good way to snap up a bargain if your dates are flexible.

  • You won't have to check back in every day to see if fares have gone down when you create a Price Alert. We'll update you the moment the price changes on cheap flights from ONT to CHS.

  • Pick your ideal departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Ontario International Airport to Charleston Airport.

Handy information about Ontario International Airport (ONT)

  • You'll find ONT at 2900 E. Airport Drive.

  • 83% of flights leaving Ontario International Airport arrive at their destination according to schedule. Given its impressive on-time stats, you're unlikely to experience delays when jetting out of ONT.

  • To reach Ontario International Airport from central Ontario, it'll take around 15 minutes if you're planning to drive. Of course, this depends on traffic conditions. It's approximately 10 kilometres from the airport to the city centre.

  • Taking public transport? You can expect a journey time of around 45 minutes.

  • Catching an early flight from Ontario International Airport to Charleston Airport? Avoid the hassle of rushing to the airport (and sneak in some extra snooze time) by choosing one of these stays close to ONT:

Arriving at Charleston Airport (CHS)

Getting from Charleston Airport (CHS) to central Charleston

  • Charleston Airport is approximately 19 kilometres from central Charleston. The drive time takes around 25 minutes.

  • Getting there on public transport takes about 50 minutes.

When to fly to Charleston Airport (CHS)

  • The quietest month for a flight from Ontario International Airport to Charleston Airport is March, while July is the busiest. Pick the ideal time to visit Charleston based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • Book your flight from Ontario International Airport to Charleston Airport for July if you'd like to go to Charleston during its warmest month. Expect temperatures of between 24ºC (75ºF) and 32ºC (90ºF).

  • January has average temperatures of between 4ºC (39ºF) and 17ºC (63ºF). Search for cheap tickets from ONT to CHS sometime around then if you like travelling in cooler conditions.

Explore more of the United States

  • Jacksonville is just one of the many cities in the United States waiting to be explored once you've taken in the sights of Charleston. Around 322 kilometres away to the south-west, its top attractions include St. John's Cathedral, Museum of Contemporary Art Jacksonville and The Cummer Museum of Art & Gardens.

  • If you're ready to explore another corner of the United States, head for Charlotte, roughly 290 kilometres north of Charleston. Bechtler Museum of Modern Art, Discovery Place and NASCAR Hall of Fame are the start of reasons to visit.

Plan the rest of your trip from Ontario to Charleston

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.