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$384+ Cheap flights from Bismarck to Ontario (BIS - ONT)

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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ONT
May 26 — Jun 21
Tue 5/26
Tue 6/2
1 adult, Economy
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Cheap 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 April 26, 2026.

This Delta deal was found by Cheapflights users on 4/21. 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.
Fri 5/85:00 am
BIS
-
ONT
2 stops9h 19m
Delta
Tue 5/125:50 pm
ONT
-
BIS
2 stops14h 39m
Delta
Deal found 4/21$384
This Delta deal was found by Cheapflights users on 4/21. 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 5/51:19 pm
BIS
-
ONT
2 stops12h 25m
Delta
Wed 5/136:00 am
ONT
-
BIS
2 stops11h 34m
Delta
Deal found 4/21$409
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/296:00 am
BIS
-
ONT
2 stops8h 12m
United Airlines
Tue 9/11:44 pm
ONT
-
BIS
2 stops7h 54m
United Airlines
Deal found 4/24$411
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/69:00 am
BIS
-
ONT
1 stop5h 38m
United Airlines
Sun 5/105:00 am
ONT
-
BIS
1 stop6h 05m
United Airlines
Deal found 4/20$418
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/125:06 pm
BIS
-
ONT
1 stop5h 30m
United Airlines
Sat 5/161:40 pm
ONT
-
BIS
1 stop8h 01m
United Airlines
Deal found 4/21$439
This Delta deal was found by Cheapflights users on 4/21. 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.
Mon 5/45:17 pm
BIS
-
ONT
2 stops8h 27m
Delta
Sat 5/96:00 am
ONT
-
BIS
2 stops11h 34m
Delta
Deal found 4/21$454
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/99:00 am
BIS
-
ONT
1 stop5h 38m
United Airlines
Tue 5/121:40 pm
ONT
-
BIS
1 stop8h 01m
United Airlines
Deal found 4/21$464
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/86:00 am
BIS
-
ONT
2 stops8h 22m
United Airlines
Tue 5/125:00 am
ONT
-
BIS
1 stop6h 05m
United Airlines
Deal found 4/21$469
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/86:00 am
BIS
-
ONT
2 stops8h 22m
United Airlines
Sat 5/1610:43 am
ONT
-
BIS
2 stops10h 58m
United Airlines
Deal found 4/21$474

Find 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 April 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$384
(Delta)

Popular in

May

Cheapest in

August

Average price

$348
Provider with most accurate pricing for Bismarck-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bismarck-Ontario flights.
Search Deals
From Bismarck to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 26, 2026.
Use the filters below to find and compare flights from Bismarck to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BismarckOntario

BIS - ONT

BISONT

Bismarck

Sat 8/29

6:00 am-12:12 pm

2 stops8h 12m

Ontario

Tue 9/1

1:44 pm-11:38 pm

2 stops7h 54m

$411

BismarckOntario

BIS - ONT

BISONT

Bismarck

Wed 5/6

9:00 am-12:38 pm

1 stop5h 38m

Ontario

Sun 5/10

5:00 am-1:05 pm

1 stop6h 05m

$418

BismarckOntario

BIS - ONT

BISONT

Bismarck

Thu 5/7

5:03 pm-8:36 pm

1 stop5h 33m

Ontario

Wed 5/13

1:40 pm-11:41 pm

1 stop8h 01m

$464
Quickest round-trip

BismarckOntario

BIS - ONT

BISONT

Bismarck

Thu 5/28

1:45 pm-5:28 pm

1 stop5h 43m

Ontario

Wed 6/3

1:18 pm-8:28 pm

1 stop5h 10m

$511

BismarckOntario

BIS - ONT

BISONT

Bismarck

Sat 5/16

6:00 am-5:52 pm

2 stops13h 52m

Ontario

Sun 5/17

5:00 am-1:05 pm

1 stop6h 05m

$639

BismarckOntario

BIS - ONT

BISONT

Bismarck

Wed 5/6

9:00 am-12:38 pm

1 stop5h 38m

Ontario

Fri 5/8

1:40 pm-1:05 pm

1 stop21h 25m

$652

BismarckOntario

BIS - ONT

BISONT

Bismarck

Tue 5/5

5:03 pm-8:36 pm

1 stop5h 33m

Ontario

Fri 5/8

1:40 pm-4:28 pm

1 stop24h 48m

$684

BismarckOntario

BIS - ONT

BISONT

Bismarck

Fri 5/8

9:00 am-12:38 pm

1 stop5h 38m

Ontario

Mon 5/11

5:00 am-1:05 pm

1 stop6h 05m

$720

BismarckOntario

BIS - ONT

BISONT

Bismarck

Mon 5/18

5:06 pm-8:36 pm

1 stop5h 30m

Ontario

Wed 5/20

5:00 am-1:05 pm

1 stop6h 05m

$723
Cheapest one-way
Quickest one-way

BismarckOntario

BIS - ONT

BISONT

Bismarck

Wed 7/15

1:45 pm-10:37 pm

2 stops10h 52m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Sorted by cheapest first

Compare providers for flights from Bismarck to Ontario

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 Bismarck to Ontario in April.
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 Bismarck-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bismarck-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bismarck-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bismarck-Ontario 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 Bismarck-Ontario 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 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.

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 $411, United Airlines can have you in Ontario from Bismarck in 8h 12m. The distance between Bismarck and Ontario is about 1242 mi.

  • 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.

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