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Bismarck

$269+ Cheap flights from Ontario to Bismarck (ONT - BIS)

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIS
giu 20 — giu 271
ven 6/20
ven 6/27
1 adult, Economy
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Cheap 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 giugno 15, 2025.

Round-trip from

$269
(United Airlines)

Popular in

May

Cheapest in

April

Average price

$391
From Ontario to Bismarck
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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Find 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 giugno 15, 2025.

This United Airlines deal was found by Cheapflights users on 6/13. 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.
mer 8/65:05 amONT - BIS
1 stop5h 55mUnited Airlines
sab 8/162:00 pmBIS - ONT
1 stop5h 25mUnited Airlines
Deal found 6/13$269
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 6/2610:54 amONT - BIS
1 stop9h 24mAmerican Airlines
ven 7/46:18 amBIS - ONT
1 stop9h 32mAmerican Airlines
Deal found 6/14$349

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 giugno 15, 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

mer 8/6

5:05 am-1:00 pm

1 stop5h 55m

Bismarck

sab 8/16

2:00 pm-5:25 pm

1 stop5h 25m

$269

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

gio 6/26

10:54 am-10:18 pm

1 stop9h 24m

Bismarck

ven 7/4

6:18 am-1:50 pm

1 stop9h 32m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/13

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, August is the cheapest month in which you can book a flight from Ontario to Bismarck (average of $346). Flying from Ontario to Bismarck in July is currently the most expensive (average of $447). 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.

Rainfall in Bismarck by month

Plan your trip to Bismarck by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bismarck ranges from 0.4 - 3.2 inches per month. June is typically the wettest month, when rainfall can reach 3.2 in. January is typically the driest time to visit Bismarck when rainfall is around 0.4 in.

Temperature in Bismarck by month

Plan your trip to Bismarck by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bismarck, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 12.2 F).

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 giugno 15, 2025.
United Airlines
7.4
Good
8,793 reviews

Boarding

7.7

Entertainment

7.0

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

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
8,793 reviews
United Airlines
7.4
Good
8,793 reviews

Boarding

7.7

Entertainment

7.0

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

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.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,793 reviews

Boarding

7.7

Entertainment

7.0

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

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.

  • What are the cheapest airlines flying from Ontario to Bismarck round-trip?

    Cheapflights users have booked flights from Ontario to Bismarck round-trip from $269. Another airline that can offer you cheap pricing is American Airlines. Users have found that United Airlines is 41% cheaper than the other options available to this destination.

  • 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, August is the cheapest month in which you can book a flight from Ontario to Bismarck (average of $346). Flying from Ontario to Bismarck in July is currently the most expensive (average of $447). 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 giugno 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$319Average$380FlexibilityNo cancel feeOn-time69%

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