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Duluth

$298+ Cheap flights from Ontario to Duluth (ONT - DLH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DLH
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Ontario to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Duluth (DLH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$522
(Delta)

One-way from

$298
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$353
From Ontario to Duluth Intl
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One-way flight from Ontario to Duluth Intl
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 5% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Duluth

Cheapest flights from Ontario to Duluth
Explore the most affordable flight options available from Ontario to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:02 amONT - DLH
1 stop9h 35mUnited Airlines
Mon 10/63:07 pmDLH - ONT
1 stop9h 23mUnited Airlines
Deal found 9/15$552
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:36 pmONT - DLH
2 stops14h 09mUnited Airlines
Fri 10/33:07 pmDLH - ONT
1 stop9h 23mUnited Airlines
Deal found 9/14$692
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:00 amONT - DLH
2 stops14h 08mUnited Airlines
Sun 10/59:45 amDLH - ONT
1 stop14h 45mUnited Airlines
Deal found 9/15$752

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Duluth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Ontario to Duluth that are best for you.

Fly from

Ontario

Fly to

Duluth

Route

Depart

Return

Price

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Wed 3/11

5:50 pm-11:07 am

2 stops15h 17m

Duluth Intl

Sat 3/14

8:05 am-10:38 pm

2 stops16h 33m

$522

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 10/4

7:02 am-6:37 pm

1 stop9h 35m

Duluth Intl

Mon 10/6

3:07 pm-10:30 pm

1 stop9h 23m

$552

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 3/7

6:00 am-9:44 am

2 stops25h 44m

Duluth Intl

Wed 3/11

11:26 am-10:45 pm

2 stops13h 19m

$557

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Mon 9/29

6:36 pm-10:45 am

2 stops14h 09m

Duluth Intl

Fri 10/3

3:07 pm-10:30 pm

1 stop9h 23m

$692

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Wed 10/1

6:00 am-10:08 pm

2 stops14h 08m

Duluth Intl

Sun 10/5

9:45 am-10:30 pm

1 stop14h 45m

$752

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Tue 9/30

7:02 am-6:37 pm

1 stop9h 35m

$298

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Mon 9/22

6:00 am-7:13 pm

2 stops11h 13m

$469

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Mon 9/22

7:00 am-6:30 pm

1 stop9h 30m

$693

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Best time to book a flight from Ontario to Duluth

Have a flexible travel schedule? Discover the best time to fly to Duluth from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Duluth

What is the cheapest month to book a flight from Ontario to Duluth?

Currently, January is the cheapest month in which you can book a flight from Ontario to Duluth (average of $339). Flying from Ontario to Duluth in June is currently the most expensive (average of $476). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Duluth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Duluth?

    Departing from Ontario to Duluth will take you 9h 35m. Airlines will cover a distance of 1589 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Ontario to Duluth that include hotel bookings?

    Yes. In addition to deals on Ontario to Duluth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Duluth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Duluth.

  • Can I find deals for business class flights from Ontario to Duluth?

    Yes. Cheapflights offers flight deals from Ontario to Duluth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Duluth?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Duluth (average of $339). Flying from Ontario to Duluth in June is currently the most expensive (average of $476). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior

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