Detroit, MI to Ontario, CA flights
Flights starting at £78. Choose between Delta Air Lines, Frontier Airlines, or American Airlines to find the best price.
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Tips to know when travelling to Ontario
Cheapest one-way trip | £102 |
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Cheapest nonstop round-trip | £174 |
Cheapest round-trip | £199 |
Average round-trip | £243 |
Includes rare itinerary | Travel hack |
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Check-in for a flight from Detroit to Ontario
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
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Delta Air Lines | DAL | DL | Yes | Opens 24 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
American Airlines | AAL | AA | Yes | No |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
Ontario travel tips
1) Hikers lovers may not miss the North Etiwanda Preserve in Ontario | If you like adventures in a little rocky terrain, the North Etiwanda Preserve is a perfect challenge for you. Explore the 4.9-kilometre trail with great flora and fauna. If you have some energy left, head to Etiwanda Falls; they are located north of the main trail, go about 2 kilometres from the parking lot. You will get fantastic photos! |
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2) Enjoy the hearty portion of Pastrami Melt at the Holiday Cafe in Ontario | If you have a good appetite, visit the Holiday Cafe at 931 N Milliken Avenue in Ontario. Locals always come back here because of their Pastrami Melt — a generous portion of pastrami meat, jalapeños, and fresh rye bread. |
3) Eat burgers from farm products in Ontario | The food at Farmer Boys at 10966 Central Avenue in Ontario is not fancy. They will offer you just ordinary burgers, salads, and French fries. But they get all these ingredients from local farms. Check it out! |
United States COVID-19 travel restrictions

Most travelers from Detroit, DTW can enter Ontario, ONT.
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Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
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