ONT - DTW

$65 Find Cheap Flights from Ontario to Detroit

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Detroit departing on 1/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Detroit Metropolitan Wayne County Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Detroit.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Detroit.
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Everything you should know

Cheapest round-trip
$130
Overall average: $631
Frontier
Thu 12/4Mon 12/8
ONT - DTW • 1 stop
Cheapest one-way
$65
Typical prices: $210-$367
Frontier
Thu 1/8
ONT - DTW • 1 stop
Top airlines
Frontier
Cheapest • from $130 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 41% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Detroit!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Detroit (ONT-DTW)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Detroit that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Detroit

Thu, Dec 4 - Mon, Dec 8
Frontier Logo
12:04 pm - 4:19 pmONT-DTW
25h 15m1 stop
Frontier Logo
11:44 am - 4:33 pmDTW-ONT
7h 49m1 stop
$130Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
12:04 pm - 4:19 pmONT-DTW
25h 15m1 stop
Frontier Logo
5:20 pm - 2:25 pmDTW-ONT
24h 05m1 stop
$134Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
12:04 pm - 4:19 pmONT-DTW
25h 15m1 stop
Frontier Logo
5:20 pm - 2:25 pmDTW-ONT
24h 05m1 stop
$138Frontier
Find Deal
Sun, Dec 7 - Fri, Dec 12
Frontier Logo
2:59 pm - 10:59 amONT-DTW
17h 00m1 stop
Frontier Logo
11:34 am - 4:33 pmDTW-ONT
7h 59m1 stop
$142Frontier
Find Deal
Sat, Dec 27 - Sat, Jan 3
Frontier Logo
6:00 am - 6:54 amONT-DTW
21h 54m1 stop
Frontier Logo
7:50 am - 11:21 pmDTW-ONT
18h 31m1 stop
$144Frontier
Find Deal
Wed, Nov 26 - Thu, Dec 4
Frontier Logo
12:58 am - 11:43 amONT-DTW
7h 45m1 stop
Frontier Logo
12:20 pm - 2:25 pmDTW-ONT
29h 05m1 stop
$145Frontier
Find Deal
Sat, Dec 20 - Mon, Jan 5
Frontier Logo
5:16 pm - 6:54 amONT-DTW
10h 38m1 stop
Frontier Logo
8:46 pm - 3:09 pmDTW-ONT
21h 23m2 stops
$165Frontier
Find Deal
Thu, Dec 4 - Sun, Jan 11
Frontier Logo
12:04 pm - 8:20 amONT-DTW
17h 16m2 stops
Frontier Logo
4:43 pm - 11:56 pmDTW-ONT
10h 13m1 stop
$166Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
Frontier Logo
12:04 pm - 4:19 pmONT-DTW
25h 15m1 stop
Frontier Logo
5:20 pm - 2:25 pmDTW-ONT
24h 05m1 stop
$176Frontier
Find Deal
Thu, Nov 27 - Mon, Dec 1
Multiple Airlines Logo
3:31 pm - 6:05 amONT-DTW
11h 34m1 stop
Multiple Airlines Logo
10:57 am - 9:17 pmDTW-ONT
37h 20m2 stops
$180Multiple Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Ontario to Detroit flights

Get data-powered insights and trends into flights from Ontario to Detroit to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Detroit?

The average price of all round-trip flights from Ontario to Detroit Metropolitan Wayne County Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ontario to Detroit, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Detroit, Sunday is the cheapest day to fly and Wednesday is the most expensive.

What is the cheapest month to fly from Ontario to Detroit Metropolitan Wayne County Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Detroit Metropolitan Wayne County Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Detroit Metropolitan Wayne County Airport is October, where tickets cost $274 (return) on average. On the other hand, the most expensive months are November and December, where the average cost of round-trip tickets is $690 and $631 respectively.

How far in advance should I book a flight from Ontario to Detroit Metropolitan Wayne County Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Detroit Metropolitan Wayne County Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Detroit Metropolitan Wayne County Airport, you should book around 3 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$65
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Ontario to Detroit

When to book flights from Ontario to Detroit

Are your dates flexible? Find out the best times to travel from Ontario to Detroit based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Detroit flights

  • What is the cheapest flight from Ontario to Detroit Metropolitan Wayne County Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Detroit Metropolitan Wayne County Airport was $65 for a one-way ticket and $130 for a round-trip.

  • Do I need a passport to fly between Ontario and Detroit?

    No

  • Which aircraft models fly most regularly from Ontario to Detroit?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Detroit?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Detroit, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Detroit, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Detroit are Southwest and Delta. With an average price for the route of $550 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $477 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Ontario to Detroit?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Detroit.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Detroit?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Detroit from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Detroit?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Detroit with an airline and back to Ontario with another airline. Booking your flights between Ontario and DTW can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Detroit?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Detroit from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Ontario to Detroit

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Detroit. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Detroit? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4235 reviews
8.0Comfort
7.5Entertainment
8.1Boarding
7.0Food
8.6Crew
Airline reviews

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

10.0 ExcellentMichael, Nov 2025LAX - BWI
Read more Southwest reviews

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

My experience on any Delta flight is always overshadowed by the time Delta removed me from a flight for no apparent reason.

There was no problems, just a little uncomfortable with seats that do not lay back a little

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Premium Plus is a really good idea for longer flights

Not enough veg food available for passengers. I actually did not get the veg food and was told it was over, and I starved the entire flight duration.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Both legs of the flight were changed. The day of the flight and length of the trip.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

They switched my flight to Spirit, Never using Kayak again,

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

Everything you need to know for your flight from Ontario to Detroit

Information on your arrival and departure airports