Cheap flights from Ontario International to Dayton International

Compare Ontario International to Dayton International flight deals

Find the cheapest month or even day of the year to fly to Dayton International

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Flight deals from Ontario International to Dayton International

Looking for a cheap last-minute deal or the best return flight from Ontario International to Dayton International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Ontario International to Dayton International

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

Ontario International to Dayton International: Alternative routes

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

Ontario to Dayton: Flight information

The things to know before you go.
Cheapest flight found$690
Cheapest month to flyDecember

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

The best price we found for a return flight from Ontario International to Dayton International is $396. 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 Dayton International. But we found flights with one or more stops from $396.
As of December 2025, there are no flights flying from Ontario International to Dayton International.
The cheapest month to fly from Ontario International to Dayton International is usually January.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Dayton International Airport on Wednesday, 21 January 2026.
No airlines currently offer direct flights between Ontario International Airport and Dayton International 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 Dayton International 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 Dayton is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Dayton International.

Travelling from Ontario International Airport (ONT) to James M. Cox Dayton International Airport (DAY): what you need to know

  • Leave enough time to make your ONT to DAY flight. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer queues in popular months such as August. Arriving up to four hours ahead of international flights and two hours for a domestic departure is a wise move.

  • Consider adding a stopover when booking your ticket from Ontario International Airport to James M. Cox Dayton International Airport. Just deselect 'Direct flights only' to break up your journey, or perhaps see a new city along the way. Here's where you can stop between ONT and DAY:

    • Denver International Airport

    • Dallas/Fort Worth International Airport

    • Hartsfield-Jackson Atlanta International Airport

How to find the cheapest flights from Ontario International Airport (ONT) to James M. Cox Dayton International Airport (DAY)

  • Currently, $690 is the cheapest price we've found for a one-way Ontario International Airport to James M. Cox Dayton International Airport flight. The best price for a return ticket is $396. Keep in mind that fares may change due to demand at the time of booking.

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

  • If you can be flexible with your travel dates, use the 'Whole month' search tool. It'll show you the cheapest price across the month when searching for a flight from Ontario International Airport to James M. Cox Dayton International Airport.

  • Save time searching for cheap flights from ONT to DAY by creating a Price Alert. You'll get an email or notification through the app when a lower fare pops up.

  • Find the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Ontario International Airport to James M. Cox Dayton International Airport, use the 'Sort by' tool. You can also filter results by airline, arrival and departure times, and number of stops.

Handy information about Ontario International Airport (ONT)

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

  • 83.6% of flights departing from Ontario International Airport touch down at their destination as planned. With its strong on-time performance, delays are unlikely when setting off from ONT.

  • Ontario International Airport is around 6 kilometres from central Ontario. If you're ride-sharing, catching a cab or driving from the centre, it'll take you 10 minutes or so to get there, depending on the traffic.

  • Taking public transport? Expect a journey time of around 1 hour 30 minutes.

  • Need a handy hotel close to ONT? If you've booked an early flight from Ontario International Airport to James M. Cox Dayton International Airport, these accommodation options will put you moments from your departure lounge:

Arriving at James M. Cox Dayton International Airport (DAY)

  • Get off your Ontario International Airport to James M. Cox Dayton International Airport flight and be snoozing in your hotel bed shortly after. If you want a handy option within easy reach of DAY, make your way to Motel 6-Dayton, OH - Englewood.

  • Grab a James M. Cox Dayton International Airport rental car and explore Dayton and beyond with your own wheels. Budget, Alamo and Avis are top providers to choose from here.

  • To lock in the lowest price, book your ride from James M. Cox Dayton International Airport about one week before you set off.

Getting from James M. Cox Dayton International Airport (DAY) to central Dayton

  • You'll find DAY at Terminal Building.

  • James M. Cox Dayton International Airport to the centre of Dayton has a drive time of around 15 minutes. It's approximately 21 kilometres away.

  • When travelling by public transport, expect a journey time of roughly 1 hour 15 minutes.

When to fly to James M. Cox Dayton International Airport (DAY)

  • It's time to choose your dates for your flight from Ontario International Airport to James M. Cox Dayton International Airport. April is the busiest month to visit Dayton. If you prefer a more relaxed vibe, go in February.

  • Book your flight from Ontario International Airport to James M. Cox Dayton International Airport for July if you want to go to Dayton during its warmest month. You can expect temperatures of between 15ºC (59ºF) and 30ºC (86ºF).

  • Search for cheap tickets from ONT to DAY in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between -11ºC (12ºF) and 6ºC (43ºF) on average.

Explore more of United States

  • Chicago is just one of the many places in United States waiting to be explored once you've taken in the sights of Dayton. Around 370 kilometres away to the north-west, its best attractions include Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • If there's time to check out another well-known destination in United States, head for Columbus, about 105 kilometres east of Dayton. Franklin Park Conservatory and Botanical Gardens, Ohio Statehouse and German Village are key reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.