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Bismarck

$98+ Cheap flights from Ontario to Bismarck (ONT - BIS)

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Ontario to Bismarck

Cheapest flights from Ontario to Bismarck
Explore the most affordable flight options available from Ontario to Bismarck. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/9. 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 12/185:05 amONT - BIS
1 stop6h 05mUnited Airlines
Sat 12/205:10 pmBIS - ONT
1 stop5h 57mUnited Airlines
Deal found 12/9$594
This United Airlines deal was found by Cheapflights users on 12/9. 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 12/225:05 amONT - BIS
1 stop6h 05mUnited Airlines
Tue 12/308:10 amBIS - ONT
1 stop6h 28mUnited Airlines
Deal found 12/9$654
This United Airlines deal was found by Cheapflights users on 12/8. 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 12/301:40 pmONT - BIS
1 stop8h 12mUnited Airlines
Wed 12/315:45 amBIS - ONT
1 stop8h 53mUnited Airlines
Deal found 12/8$818
This United Airlines deal was found by Cheapflights users on 12/8. 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 12/111:34 pmONT - BIS
1 stop7h 34mUnited Airlines
Fri 12/125:15 pmBIS - ONT
1 stop5h 27mUnited Airlines
Deal found 12/8$833
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/225:05 amONT - BIS
1 stop6h 05mUnited Airlines
Sat 12/275:10 pmBIS - ONT
1 stop21h 28mUnited Airlines
Deal found 12/10$968

Find flight deals from Ontario to Bismarck

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Bismarck (BIS). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$349
(United Airlines)

One-way from

$98
(Kiwi.com)

Popular in

April

Cheapest in

August
Provider with most accurate pricing for Ontario-Bismarck flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Bismarck flights.
Search Deals
From Ontario to Bismarck
Search Deals
One-way flight from Ontario to Bismarck
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($40 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Bismarck 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 December 12, 2025.
Use the filters below to find and compare flights from Ontario to Bismarck that are best for you.

Fly from

Ontario

Fly to

Bismarck

Route

Depart

Return

Price

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Tue 2/3

5:05 am-12:51 pm

1 stop5h 46m

Bismarck

Sat 2/7

9:00 am-12:47 pm

1 stop5h 47m

$349

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Sat 1/10

1:24 pm-8:38 pm

1 stop5h 14m

Bismarck

Fri 1/16

1:35 pm-8:58 pm

1 stop9h 23m

$497

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Mon 12/22

5:05 am-1:10 pm

1 stop6h 05m

Bismarck

Tue 12/30

8:10 am-12:38 pm

1 stop6h 28m

$654

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Mon 1/5

5:05 am-1:10 pm

1 stop6h 05m

Bismarck

Mon 1/5

5:10 pm-9:08 pm

1 stop5h 58m

$683

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Wed 1/14

6:49 pm-10:56 am

1 stop14h 07m

$98

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Tue 1/13

1:24 pm-8:38 pm

1 stop5h 14m

$295

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Wed 1/14

1:11 pm-11:26 pm

2 stops8h 15m

$300

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Tue 1/13

1:11 pm-11:26 pm

2 stops8h 15m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Compare providers for flights from Ontario to Bismarck

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 Bismarck in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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-Bismarck flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Bismarck flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Bismarck flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Bismarck flights, Cheapflights users trust eDreams the most. eDreams 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-Bismarck 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 Bismarck

Have a flexible travel schedule? Discover the best time to fly to Bismarck 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 Bismarck

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

Currently, March is the cheapest month in which you can book a flight from Ontario to Bismarck (average of $201). Flying from Ontario to Bismarck in December is currently the most expensive (average of $419). 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.

Reviews of airlines servicing Bismarck

Get insights into the airlines that provide service to Bismarck. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bismarck. Reviews last updated December 12, 2025.
See what other customers who have flown with United Airlines from Ontario to Bismarck have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Bismarck. 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 Bismarck?

    There are many flights that can get you from Ontario to Bismarck in 5h 46m. Fly via United Airlines to get the fastest option. The distance from Ontario to Bismarck is about 1242 mi.

  • What is the cheapest airline to fly from Ontario to Bismarck round-trip?

    Cheapflights users have booked flights from Ontario to Bismarck round-trip from $319.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Bismarck 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 Bismarck?

    Currently, March is the cheapest month in which you can book a flight from Ontario to Bismarck (average of $201). Flying from Ontario to Bismarck in December is currently the most expensive (average of $419). 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

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Top airline flying from Ontario to Bismarck

Discover the top airline that operate flights from Ontario to Bismarck. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$319Average$380FlexibilityNo cancel feeOn-time69%

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