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Bismarck

$220+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIS
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$349
(United Airlines)

One-way from

$220
(American Airlines)

Popular in

May

Cheapest in

April

Average price

$418
From Ontario to Bismarck
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One-way flight from Ontario to Bismarck
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Highest demand for flights based on searches. 6% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. 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.
Fri 8/225:10 amONT - BIS
1 stop5h 49mUnited Airlines
Mon 8/251:55 pmBIS - ONT
1 stop5h 34mUnited Airlines
Deal found 7/28$349
This Delta deal was found by Cheapflights users on 7/28. 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.
Tue 8/121:15 pmONT - BIS
2 stops8h 02mDelta
Sat 8/163:35 pmBIS - ONT
2 stops9h 05mDelta
Deal found 7/28$389
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1212:59 amONT - BIS
1 stop20h 40mMultiple Airlines
Tue 12/238:00 amBIS - ONT
1 stop6h 38mMultiple Airlines
Deal found 7/28$597

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 July 29, 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

Fri 8/22

5:10 am-12:59 pm

1 stop5h 49m

Bismarck

Mon 8/25

1:55 pm-5:29 pm

1 stop5h 34m

$349

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Tue 8/12

1:15 pm-11:17 pm

2 stops8h 02m

Bismarck

Sat 8/16

3:35 pm-10:40 pm

2 stops9h 05m

$389

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Sun 10/12

12:59 am-11:39 pm

1 stop20h 40m

Bismarck

Tue 12/23

8:00 am-12:38 pm

1 stop6h 38m

$597

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Sat 8/9

12:47 pm-10:17 pm

1 stop7h 30m

$220

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Sat 8/9

1:15 pm-11:20 pm

2 stops8h 05m

$225

OntarioBismarck

ONT - BIS

ONTBIS

Ontario

Wed 8/6

5:05 am-1:00 pm

1 stop5h 55m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 $433). 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 July 29, 2025.
See what other customers who have flown with Delta, United Airlines, and American 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.
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
United Airlines
7.4
Good
8,899 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

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 $349. Another airline that can offer you cheap pricing is Delta. Users have found that United Airlines is 24% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Ontario to Bismarck one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $220. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Ontario to Bismarck for a low price.

  • 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 $433). 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.

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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$319Average$380FlexibilityNo cancel feeOn-time69%

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