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$300+ Cheap flights from Bismarck to Ontario (BIS - ONT)

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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Bismarck to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Bismarck (BIS) to Ontario (ONT). 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 September 11, 2025.

Round-trip from

$332
(American Airlines)

One-way from

$300
(Delta)

Popular in

November

Cheapest in

April

Average price

$348
From Bismarck to Ontario
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One-way flight from Bismarck to Ontario
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Highest demand for flights based on searches. 11% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Bismarck to Ontario

Cheapest flights from Bismarck to Ontario
Explore the most affordable flight options available from Bismarck to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:19 amBIS - ONT
1 stop9h 35mAmerican Airlines
Wed 10/812:47 pmONT - BIS
1 stop7h 55mAmerican Airlines
Deal found 9/10$332
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 9/246:00 amBIS - ONT
2 stops8h 13mUnited Airlines
Wed 10/85:05 amONT - BIS
1 stop5h 55mUnited Airlines
Deal found 9/10$404
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:19 amBIS - ONT
1 stop9h 35mAmerican Airlines
Tue 9/3012:47 pmONT - BIS
1 stop7h 39mAmerican Airlines
Deal found 9/10$407
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/911:33 amBIS - ONT
1 stop22h 14mMultiple Airlines
Sun 10/1910:40 pmONT - BIS
2 stops43h 07mMultiple Airlines
Deal found 9/11$447
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/118:00 amBIS - ONT
1 stop6h 51mUnited Airlines
Sat 10/185:05 amONT - BIS
1 stop5h 49mUnited Airlines
Deal found 9/10$458
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/2211:35 amBIS - ONT
1 stop7h 54mUnited Airlines
Fri 9/266:36 pmONT - BIS
2 stops16h 18mUnited Airlines
Deal found 9/10$527
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/95:10 pmBIS - ONT
1 stop5h 14mUnited Airlines
Sun 10/195:05 amONT - BIS
1 stop14h 47mUnited Airlines
Deal found 9/11$637

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bismarck to Ontario 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 September 11, 2025.
Use the filters below to find and compare flights from Bismarck to Ontario that are best for you.

Fly from

Bismarck

Fly to

Ontario

Route

Depart

Return

Price

BismarckOntario

BIS - ONT

BISONT

Bismarck

Wed 9/24

6:19 am-1:54 pm

1 stop9h 35m

Ontario

Wed 10/8

12:47 pm-10:42 pm

1 stop7h 55m

$332

BismarckOntario

BIS - ONT

BISONT

Bismarck

Wed 9/24

6:00 am-12:13 pm

2 stops8h 13m

Ontario

Wed 10/8

5:05 am-1:00 pm

1 stop5h 55m

$404

BismarckOntario

BIS - ONT

BISONT

Bismarck

Fri 9/26

6:19 am-11:55 am

1 stop7h 36m

Ontario

Tue 9/30

4:45 pm-2:01 pm

2 stops19h 16m

$444

BismarckOntario

BIS - ONT

BISONT

Bismarck

Thu 10/9

11:33 am-7:47 am

1 stop22h 14m

Ontario

Sun 10/19

10:40 pm-7:47 pm

2 stops43h 07m

$447

BismarckOntario

BIS - ONT

BISONT

Bismarck

Sat 10/11

8:00 am-5:49 pm

2 stops11h 49m

Ontario

Sat 10/18

5:05 am-12:54 pm

1 stop5h 49m

$526

BismarckOntario

BIS - ONT

BISONT

Bismarck

Mon 9/22

11:35 am-5:29 pm

1 stop7h 54m

Ontario

Fri 9/26

6:36 pm-12:54 pm

2 stops16h 18m

$527

BismarckOntario

BIS - ONT

BISONT

Bismarck

Thu 10/9

5:10 pm-8:24 pm

1 stop5h 14m

Ontario

Sun 10/19

5:05 am-9:52 pm

1 stop14h 47m

$637

BismarckOntario

BIS - ONT

BISONT

Bismarck

Sat 10/11

12:20 pm-9:20 pm

2 stops11h 00m

Ontario

Sat 10/18

9:50 am-7:37 pm

2 stops7h 47m

$659

BismarckOntario

BIS - ONT

BISONT

Bismarck

Sat 10/18

12:20 pm-9:20 pm

2 stops11h 00m

$300

BismarckOntario

BIS - ONT

BISONT

Bismarck

Fri 10/24

1:58 pm-12:51 pm

1 stop24h 53m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 12 results
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Best time to book a flight from Bismarck to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Bismarck to Ontario (average of $246). Flying from Bismarck to Ontario in March is currently the most expensive (average of $328). 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 Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with United Airlines from Bismarck to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

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

    For as low as $404, American Airlines can have you in Ontario from Bismarck in 8h 13m. The distance between Bismarck and Ontario is about 1242 mi. This flight may include one or multiple stops.

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

    Flying on United Airlines is currently your cheapest option to Ontario, with prices starting at $348.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Bismarck to Ontario (average of $246). Flying from Bismarck to Ontario in March is currently the most expensive (average of $328). 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 Bismarck to Ontario

Discover the top airline that operate flights from Bismarck to Ontario. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$348Average$558FlexibilityNo cancel feeOn-time69%

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