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Duluth

$368+ Cheap flights from Ontario to Duluth (ONT - DLH)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DLH
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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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 November 6, 2025.

This United Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 11/207:00 amONT - DLH
1 stop25h 38mUnited Airlines
Mon 11/243:06 pmDLH - ONT
1 stop9h 25mUnited Airlines
Deal found 11/5$803
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/291:40 pmONT - DLH
2 stops22h 48mUnited Airlines
Fri 1/27:50 amDLH - ONT
1 stop16h 35mUnited Airlines
Deal found 11/5$878
This United Airlines deal was found by Cheapflights users on 11/6. 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 11/106:38 pmONT - DLH
2 stops14h 00mUnited Airlines
Sun 11/303:06 pmDLH - ONT
2 stops12h 16mUnited Airlines
Deal found 11/6$1,339

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 November 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$368
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$508
Provider with most accurate pricing for Ontario-Duluth Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Duluth Intl flights.
Search Deals
From Ontario to Duluth Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 6, 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

11:50 pm-10:44 am

1 stop8h 54m

Duluth Intl

Sat 3/14

3:14 pm-10:15 pm

1 stop9h 01m

$368

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Wed 3/25

11:50 pm-10:44 am

1 stop8h 54m

Duluth Intl

Mon 3/30

3:14 pm-10:26 pm

1 stop9h 12m

$577

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Thu 2/26

6:37 pm-10:43 am

2 stops14h 06m

Duluth Intl

Mon 3/2

3:12 pm-12:43 pm

2 stops23h 31m

$671

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Thu 11/20

7:00 am-10:38 am

1 stop25h 38m

Duluth Intl

Mon 11/24

3:06 pm-10:31 pm

1 stop9h 25m

$803

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sun 11/30

1:20 pm-11:50 pm

2 stops8h 30m

$780

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sun 11/30

7:00 am-10:38 am

1 stop25h 38m

$1,458

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Compare providers for flights from Ontario to Duluth

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Duluth in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Duluth flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Duluth flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Duluth flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Duluth flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Duluth flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, August is the cheapest month in which you can book a flight from Ontario to Duluth (average of $208). Flying from Ontario to Duluth in May is currently the most expensive (average of $463). 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 8h 54m. Airlines will cover a distance of 1589 mi.

  • 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, August is the cheapest month in which you can book a flight from Ontario to Duluth (average of $208). Flying from Ontario to Duluth in May is currently the most expensive (average of $463). 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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