HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Duluth

$219+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DLH
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Duluth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 27, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 11/116:38 pmONT - DLH
2 stops14h 00mUnited Airlines
Sat 11/153:06 pmDLH - ONT
1 stop9h 25mUnited Airlines
Deal found 10/27$424
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Tue 10/286:38 pmONT - DLH
2 stops13h 59mUnited Airlines
Sat 11/13:06 pmDLH - ONT
1 stop9h 25mUnited Airlines
Deal found 10/25$549
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Sun 11/96:38 pmONT - DLH
2 stops14h 00mUnited Airlines
Thu 11/133:06 pmDLH - ONT
1 stop9h 25mUnited Airlines
Deal found 10/25$602
This United Airlines deal was found by Cheapflights users on 10/26. 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 10/26$724
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/136:00 amONT - DLH
2 stops13h 59mUnited Airlines
Sat 12/203:03 pmDLH - ONT
2 stops23h 35mUnited Airlines
Deal found 10/25$935

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 October 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$364
(Delta)

One-way from

$219
(Delta)

Popular in

December

Cheapest in

January

Average price

$357
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
One-way flight 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 October 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 October 27, 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

$393

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Tue 11/11

6:38 pm-10:38 am

2 stops14h 00m

Duluth Intl

Sat 11/15

3:06 pm-10:31 pm

1 stop9h 25m

$424

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sun 11/9

6:38 pm-10:38 am

2 stops14h 00m

Duluth Intl

Thu 11/13

3:06 pm-10:31 pm

1 stop9h 25m

$602

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 12/6

6:00 am-7:35 pm

2 stops11h 35m

$219

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 12/6

5:05 am-9:59 pm

3 stops14h 54m

$469

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

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 October.
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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Duluth

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Minneapolis flights
San Francisco to Minneapolis flights
San Diego to Minneapolis flights
Santa Ana to Minneapolis flights
Sacramento to Minneapolis flights
Ontario to Minneapolis flights
San Jose to Minneapolis flights
Las Vegas to Minneapolis flights
Oakland to Minneapolis flights
Reno to Minneapolis flights
Burbank to Minneapolis flights
Fresno to Minneapolis flights
Palm Springs to Minneapolis flights
Las Vegas to Sioux Falls flights
Los Angeles to Sioux Falls flights
San Diego to Sioux Falls flights
Long Beach to Minneapolis flights
Ontario to Sioux Falls flights
Santa Barbara to Minneapolis flights
Los Angeles to Rochester flights
San Diego to Fargo flights
Los Angeles to Fargo flights
Los Angeles to Mason City flights
Santa Ana to Sioux Falls flights
San Luis Obispo to Minneapolis flights
San Francisco to Fargo flights
Monterey to Minneapolis flights
Ontario to Fargo flights
Redding to Minneapolis flights
Medford to Minneapolis flights
Sacramento to Sioux Falls flights
Bakersfield to Minneapolis flights
Sacramento to Duluth flights
Burbank to Fargo flights
San Francisco to Duluth flights
San Francisco to Sioux Falls flights
Sacramento to Fargo flights
Fresno to Sioux Falls flights
Burbank to Sioux Falls flights
Las Vegas to Fargo flights
Palm Springs to Sioux Falls flights
San Diego to Rochester flights
Santa Ana to Fargo flights
Santa Ana to Duluth flights
Bakersfield to Sioux Falls flights
Los Angeles to La Crosse flights
San Diego to Duluth flights
Arcata to Minneapolis flights
Medford to Sioux Falls flights
Oakland to Fargo flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.