ONT - DTW

$96 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 11/14. 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

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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Detroit, as well as popular online travel agencies
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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

Fri, Nov 14 - Mon, Nov 17
Frontier Logo
6:53 am - 4:19 pmONT-DTW
6h 26m1 stop
Frontier Logo
5:14 pm - 11:50 pmDTW-ONT
9h 36m1 stop
$158Frontier
Find Deal
Sat, Oct 25 - Sun, Oct 26
Frontier Logo
7:04 am - 12:59 amONT-DTW
14h 55m1 stop
Frontier Logo
6:00 am - 9:35 amDTW-ONT
6h 35m1 stop
$159Frontier
Find Deal
Sat, Oct 18 - Thu, Oct 23
Frontier Logo
8:34 am - 7:33 pmONT-DTW
7h 59m1 stop
Frontier Logo
6:00 am - 9:35 amDTW-ONT
6h 35m1 stop
$162Frontier
Find Deal
Fri, Oct 24 - Sun, Oct 26
Frontier Logo
8:34 am - 6:32 pmONT-DTW
6h 58m1 stop
Frontier Logo
6:00 am - 9:35 amDTW-ONT
6h 35m1 stop
$164Frontier
Find Deal
Mon, Oct 27 - Thu, Oct 30
Frontier Logo
6:53 am - 12:59 amONT-DTW
15h 06m1 stop
Frontier Logo
5:14 pm - 11:50 pmDTW-ONT
9h 36m1 stop
$190Frontier
Find Deal
Thu, Nov 6 - Mon, Nov 10
Frontier Logo
7:39 am - 6:33 pmONT-DTW
7h 54m1 stop
Frontier Logo
5:14 pm - 11:50 pmDTW-ONT
9h 36m1 stop
$193Frontier
Find Deal
Fri, Oct 17 - Tue, Oct 21
Frontier Logo
6:53 am - 12:59 amONT-DTW
15h 06m1 stop
Frontier Logo
7:55 am - 11:50 pmDTW-ONT
18h 55m1 stop
$194Frontier
Find Deal
Thu, Nov 6 - Sun, Nov 9
Frontier Logo
7:39 am - 6:33 pmONT-DTW
7h 54m1 stop
Frontier Logo
9:15 pm - 11:50 pmDTW-ONT
29h 35m1 stop
$195Frontier
Find Deal
Tue, Oct 21 - Tue, Oct 28
Multiple Airlines Logo
7:04 am - 11:22 pmONT-DTW
13h 18m1 stop
Multiple Airlines Logo
9:05 pm - 6:42 amDTW-ONT
36h 37m2 stops
$210Multiple Airlines
Find Deal
Tue, Jan 27 - Wed, Feb 4
Alaska Airlines Logo
4:03 pm - 4:19 pmONT-DTW
21h 16m1 stop
Alaska Airlines Logo
5:15 pm - 10:59 amDTW-ONT
20h 44m1 stop
$306Alaska Airlines
Find Deal

Everything you should know

Top airlines
Frontier
Cheapest • from $158 (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 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 38% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$158
Overall average: $751
Frontier
Fri 11/14Mon 11/17
ONT - DTW • 1 stop
Cheapest one-way
$96
Typical prices: $102-165
Multiple Airlines
Fri 11/14
ONT - DTW • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Detroit!
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 $292 (return) on average. On the other hand, the most expensive months are November and March, where the average cost of round-trip tickets is $751 and $652 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 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$96
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 13% 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 $96 for a one-way ticket and $158 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 $553 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 $484 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 4248 reviews
8.0Comfort
8.6Crew
7.0Food
8.1Boarding
7.5Entertainment
Airline reviews

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

10.0 ExcellentRobert, Sep 2025SFO - LAS
Read more Southwest reviews

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

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

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

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

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.

Boarding in Amsterdam is always chaotic. KLM/ Delta has not streamlined or made it efficient as it was boarding in Detroit . The food was mediocre The crew was unfriendly and more focused on getting things done quickly rather than service with a smile .

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.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

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.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

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

They changed the timing , first delayed by 4 hours then went back to 40 mins late, we had to run back to airport to not miss our flight. This is ridiculous

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

Information on your arrival and departure airports

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