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Cheap Flights from Ontario (ONT) to Detroit (DTW)

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      Travellers and cabin class, 1 Adult, Economy

      Compare Ontario International to Detroit Wayne County flight deals

      Find the cheapest month or even day of the year to fly to Detroit Wayne County

      Book the best Detroit Wayne County fare with no extra fees

      Flight deals from Ontario International to Detroit Wayne County

      Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Detroit Wayne County Airport? If you want to travel next month, return fares start from $398. Find the lowest prices on one-way and return tickets right here.
      Detroit.$375 per passenger.Departing Mon, 26 Oct, returning Mon, 9 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 26 Oct, arriving in Detroit Wayne County.Inbound indirect flight with Frontier Airlines, departs from Detroit Wayne County on Mon, 9 Nov, arriving in Ontario International.Price includes taxes and charges.From $375, select.
      Detroit.$398 per passenger.Departing Thu, 17 Sep, returning Sat, 26 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Thu, 17 Sep, arriving in Detroit Wayne County.Inbound indirect flight with Frontier Airlines, departs from Detroit Wayne County on Sat, 26 Sep, arriving in Ontario International.Price includes taxes and charges.From $398, select.
      Detroit.$400 per passenger.Departing Sat, 10 Oct, returning Mon, 12 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 10 Oct, arriving in Detroit Wayne County.Inbound indirect flight with Frontier Airlines, departs from Detroit Wayne County on Mon, 12 Oct, arriving in Ontario International.Price includes taxes and charges.From $400, select.
      Detroit.$415 per passenger.Departing Fri, 6 Nov, returning Mon, 9 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Fri, 6 Nov, arriving in Detroit Wayne County.Inbound indirect flight with Frontier Airlines, departs from Detroit Wayne County on Mon, 9 Nov, arriving in Ontario International.Price includes taxes and charges.From $415, select.
      Detroit.$441 per passenger.Departing Wed, 30 Sep, returning Sat, 3 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Wed, 30 Sep, arriving in Detroit Wayne County.Inbound indirect flight with Frontier Airlines, departs from Detroit Wayne County on Sat, 3 Oct, arriving in Ontario International.Price includes taxes and charges.From $441, select.
      Detroit.$533 per passenger.Departing Tue, 1 Dec, returning Fri, 11 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 1 Dec, arriving in Detroit Wayne County.Inbound indirect flight with Frontier Airlines, departs from Detroit Wayne County on Fri, 11 Dec, arriving in Ontario International.Price includes taxes and charges.From $533, select.
      Detroit.$550 per passenger.Departing Wed, 17 Feb, returning Wed, 24 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 17 Feb, arriving in Detroit Wayne County.Inbound indirect flight with Southwest Airlines, departs from Detroit Wayne County on Wed, 24 Feb, arriving in Ontario International.Price includes taxes and charges.From $550, select.
      Detroit.$554 per passenger.Departing Wed, 25 Nov, returning Tue, 1 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Wed, 25 Nov, arriving in Detroit Wayne County.Inbound indirect flight with Frontier Airlines, departs from Detroit Wayne County on Tue, 1 Dec, arriving in Ontario International.Price includes taxes and charges.From $554, select.
      Detroit.$558 per passenger.Departing Sat, 9 Jan, returning Thu, 14 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 9 Jan, arriving in Detroit Wayne County.Inbound indirect flight with Southwest Airlines, departs from Detroit Wayne County on Thu, 14 Jan, arriving in Ontario International.Price includes taxes and charges.From $558, select.
      Detroit.$594 per passenger.Departing Sat, 31 Oct, returning Fri, 11 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 31 Oct, arriving in Detroit Wayne County.Inbound indirect flight with Southwest Airlines, departs from Detroit Wayne County on Fri, 11 Dec, arriving in Ontario International.Price includes taxes and charges.From $594, select.
      Detroit.$601 per passenger.Departing Mon, 7 Dec, returning Tue, 26 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 7 Dec, arriving in Detroit Wayne County.Inbound indirect flight with Southwest Airlines, departs from Detroit Wayne County on Tue, 26 Jan, arriving in Ontario International.Price includes taxes and charges.From $601, select.
      Detroit.$709 per passenger.Departing Sun, 8 Nov, returning Sat, 6 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sun, 8 Nov, arriving in Detroit Wayne County.Inbound indirect flight with Southwest Airlines, departs from Detroit Wayne County on Sat, 6 Mar, arriving in Ontario International.Price includes taxes and charges.From $709, select.
      Detroit.$755 per passenger.Departing Wed, 10 Mar, returning Tue, 16 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 10 Mar, arriving in Detroit Wayne County.Inbound indirect flight with Southwest Airlines, departs from Detroit Wayne County on Tue, 16 Mar, arriving in Ontario International.Price includes taxes and charges.From $755, select.
      Detroit.$790 per passenger.Departing Fri, 16 Jul, returning Tue, 20 Jul.Return flight with American Airlines.Outbound indirect flight with American Airlines, departs from Ontario International on Fri, 16 Jul, arriving in Detroit Wayne County.Inbound indirect flight with American Airlines, departs from Detroit Wayne County on Tue, 20 Jul, arriving in Ontario International.Price includes taxes and charges.From $790, select.
      Detroit.$812 per passenger.Departing Fri, 14 May, returning Mon, 17 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Fri, 14 May, arriving in Detroit Wayne County.Inbound indirect flight with Delta, departs from Detroit Wayne County on Mon, 17 May, arriving in Ontario International.Price includes taxes and charges.From $812, select.
      Detroit.$818 per passenger.Departing Thu, 29 Apr, returning Mon, 3 May.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 29 Apr, arriving in Detroit Wayne County.Inbound indirect flight with Southwest Airlines, departs from Detroit Wayne County on Mon, 3 May, arriving in Ontario International.Price includes taxes and charges.From $818, select.

      Find the cheapest month to fly from Ontario International to Detroit Wayne County

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Detroit Wayne County flights are currently cheapest in September.
      Aug
      Find prices
      Sep
      from $396
      Oct
      from $397
      Nov
      from $413
      Dec
      from $530
      Jan
      from $554
      Feb
      from $547
      Mar
      from $751
      Apr
      Find prices
      May
      from $807
      Jun
      Find prices
      Jul
      from $785

      Ontario International to Detroit Wayne County: Alternative routes

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

      Detroit Wayne County

      28km from central Detroit
      ClosestCheapest
      from $372
      Search flights

      Ontario to Detroit: Flight information

      The things to know before you go.
      Cheapest flight found$375
      Cheapest month to flyOctober

      Finding cheap flights from Ontario International to Detroit Wayne County: Frequently asked questions

      The best price we found for a return flight from Ontario International to Detroit Wayne County is $372. 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 Detroit Wayne County. But we found flights with one or more stops from $375.
      As of August 2026, there are no flights flying from Ontario International to Detroit Wayne County.
      The cheapest month to fly from Ontario International to Detroit Wayne County is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Detroit Wayne County Airport on Monday, 26 October 2026.
      No airlines currently offer direct flights between Ontario International Airport and Detroit Wayne County 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 Detroit Wayne County 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 Detroit 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 Detroit Wayne County.

      Flying from Ontario International Airport (ONT) to Detroit Wayne County Airport (DTW): what you need to know

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

      • For a smooth journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to catch your ONT to DTW flight.

      • Travelling during a peak month such as July? Public holidays and other popular seasons can lead to longer lines at check-in and security. Play it safe and get there up to four hours ahead of international flights and two hours before domestic departures.

      • Consider adding a stopover when booking your ticket from Ontario International Airport to Detroit Wayne County Airport. Simply uncheck 'Direct flights only' to break up your journey, or perhaps explore a new destination along the way. Check out these options between ONT and DTW:

        • Denver International Airport

        • Phoenix Sky Harbour Airport

        • Harry Reid International Airport

      How to find the cheapest flights from Ontario International Airport (ONT) to Detroit Wayne County Airport (DTW)

      • The cheapest price we've found for a one-way Ontario International Airport to Detroit Wayne County Airport flight is $115. A round-trip fare right now is $372. Depending on the availability and when you book, these fares can change.

      • It's often best to book ahead of time if you want to get cheap tickets from ONT to DTW. That's because flight prices are based on demand, which tends to increase closer to the date of departure.

      • Getting cheap flights from Ontario International Airport to Detroit Wayne County Airport is easy if you can be flexible with your travel dates. Use the 'Whole month' search tool to see the lowest fares across each month and land a great deal.

      • Finding cheap flights from ONT to DTW couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll get in touch as soon as fares go down.

      • Tailor your flights with filters. Choose your preferred departure and arrival times, total journey duration and airlines. You can also sort results by 'Best,' 'Fastest' or 'Cheapest' flights from Ontario International Airport to Detroit Wayne County Airport.

      Handy information about Ontario International Airport (ONT)

      • The address for ONT is 2900 E. Airport Drive.

      • Ontario International Airport has a strong on-time record, so you're unlikely to face delays. Departures from ONT land on schedule 83% of the time.

      • Ontario International Airport is around 10 kilometres from central Ontario. If you're driving, ride-sharing or catching a taxi from the centre, it'll take you 15 minutes or so to get there, depending on the traffic.

      • Taking public transport? Expect a trip time of around 45 minutes.

      • Taking an early flight from Ontario International Airport to Detroit Wayne County Airport? Avoid the stress of rushing to the airport (and sneak in some extra precious sleep) by choosing one of these hotels close to ONT:

      Arriving at Detroit Wayne County Airport (DTW)

      When to fly to Detroit Wayne County Airport (DTW)

      • The quietest month for a flight from Ontario International Airport to Detroit Wayne County Airport is March, while July is the most popular. Choose the ideal time to visit Detroit based on whether you prefer a more relaxed vibe or a faster pace.

      • The warmest month in Detroit is July, with the temperature ranging between 15ºC (59ºF) and 30ºC (86ºF). Lock in your flights from Ontario International Airport to Detroit Wayne County Airport in this month if this is the type of weather you enjoy.

      • Search for cheap tickets from ONT to DTW in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -12ºC (10ºF) and 3ºC (37ºF) on average.

      Explore more of the United States

      • Chicago is just one of the many places in the United States waiting to be explored once you've taken in the sights of Detroit. Around 386 kilometres away to the west, check out popular attractions including Millennium Park, Art Institute of Chicago and Willis Tower.

      • Columbus is another sought-after destination in the United States and is around 257 kilometres south of Detroit. No trip is complete without visiting Franklin Park Conservatory and Botanical Gardens, Whetstone Park / Park of Roses and Ohio Theatre.

      Plan smart, explore more

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      Plan the rest of your trip from Ontario to Detroit

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