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Duluth

$208+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DLH
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap 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 February 5, 2026.

This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:52 am
ONT
-
DLH
2 stops9h 46m
Delta
Tue 11/178:05 am
DLH
-
ONT
2 stops10h 07m
Delta
Deal found 2/3$309
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:52 am
ONT
-
DLH
2 stops9h 46m
Delta
Wed 11/188:05 am
DLH
-
ONT
2 stops10h 07m
Delta
Deal found 2/3$334
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:52 am
ONT
-
DLH
2 stops9h 46m
Delta
Sat 11/148:05 am
DLH
-
ONT
2 stops10h 07m
Delta
Deal found 2/3$364
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/46:37 pm
ONT
-
DLH
2 stops14h 06m
United Airlines
Wed 3/113:07 pm
DLH
-
ONT
1 stop9h 11m
United Airlines
Deal found 2/2$394
This United Airlines deal was found by Cheapflights users on 2/3. 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 5/267:00 am
ONT
-
DLH
1 stop8h 34m
United Airlines
Tue 11/1711:26 am
DLH
-
ONT
2 stops10h 54m
United Airlines
Deal found 2/3$547
This United Airlines deal was found by Cheapflights users on 2/4. 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 4/287:00 am
ONT
-
DLH
1 stop9h 09m
United Airlines
Thu 4/302:57 pm
DLH
-
ONT
1 stop9h 33m
United Airlines
Deal found 2/4$550
This United Airlines deal was found by Cheapflights users on 2/2. 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 2/239:06 pm
ONT
-
DLH
2 stops11h 37m
United Airlines
Thu 2/2611:20 am
DLH
-
ONT
2 stops12h 39m
United Airlines
Deal found 2/2$551
This United Airlines deal was found by Cheapflights users on 2/1. 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 2/36:00 am
ONT
-
DLH
2 stops13h 59m
United Airlines
Sat 2/77:40 am
DLH
-
ONT
2 stops12h 11m
United Airlines
Deal found 2/1$609
This United Airlines deal was found by Cheapflights users on 2/2. 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 2/246:10 am
ONT
-
DLH
2 stops26h 33m
United Airlines
Sat 2/2811:20 am
DLH
-
ONT
2 stops11h 30m
United Airlines
Deal found 2/2$617

Find 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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(Delta)

One-way from

$208
(United Airlines)

Popular in

January

Cheapest in

August

Average price

$438
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. 12% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 5, 2026.
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 3/4

6:37 pm-10:43 am

2 stops14h 06m

Duluth Intl

Wed 3/11

3:07 pm-10:18 pm

1 stop9h 11m

$394

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Mon 2/23

9:06 pm-10:43 am

2 stops11h 37m

Duluth Intl

Thu 2/26

11:20 am-9:59 pm

2 stops12h 39m

$551

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Tue 2/24

6:10 am-10:43 am

2 stops26h 33m

Duluth Intl

Sat 2/28

11:20 am-8:50 pm

2 stops11h 30m

$617

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Tue 4/28

7:00 am-6:09 pm

1 stop9h 09m

Duluth Intl

Thu 4/30

11:14 am-9:58 pm

2 stops12h 44m

$658

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 4/25

7:00 am-6:09 pm

1 stop9h 09m

$208

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Mon 2/23

10:20 pm-11:30 am

2 stops11h 10m

$212

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Fri 3/6

11:59 pm-10:43 am

1 stop8h 44m

$251

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Mon 2/23

6:37 pm-10:43 am

2 stops14h 06m

$257

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Thu 3/19

11:59 pm-10:43 am

1 stop8h 44m

$267

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Wed 3/18

1:50 pm-6:08 pm

2 stops26h 18m

$372

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 11 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub the most. FlightHub 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 January is currently the most expensive (average of $663). 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 14h 06m. 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 January is currently the most expensive (average of $663). 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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