$331+ 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ONT
Oct 4 — Oct 111
Round-trip
1 adult, Economy
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Find cheap flights from Bismarck to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Bismarck to Ontario
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Best
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One-way
Cheapest flights from Bismarck to OntarioExplore 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 4, 2026.
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 4, 2026.
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/31:40 pm -
2 stops11h 11m
Sat 10/1011:10 am -
2 stops10h 33m
Deal found 8/31![United Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 10/110:15 pm -
1 stop10h 49m
Thu 10/81:38 pm -
1 stop5h 48m
Deal found 9/1![Multiple Airlines logo]()
$365
This United Airlines deal was found by Cheapflights users on 8/31. 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 9/159:20 am -
1 stop5h 30m
Sat 9/195:00 am -
1 stop5h 51m
Deal found 8/31![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 8/30. 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 9/1111:12 am -
2 stops13h 28m
Tue 9/156:00 pm -
2 stops14h 32m
Deal found 8/30![Delta logo]()
$519
This United Airlines deal was found by Cheapflights users on 8/30. 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 9/106:00 am -
2 stops8h 12m
Tue 9/151:18 pm -
1 stop5h 00m
Deal found 8/30![United Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 8/30. 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 9/1111:12 am -
2 stops13h 28m
Mon 9/146:00 pm -
2 stops14h 32m
Deal found 8/30![Delta logo]()
$549
This United Airlines deal was found by Cheapflights users on 8/30. 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 9/125:15 pm -
1 stop5h 38m
Tue 9/155:00 am -
1 stop5h 51m
Deal found 8/30![United Airlines logo]()
$571
Best flights from Bismarck to OntarioDiscover carefully curated flight deals from Bismarck to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from Bismarck to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/31:40 pm -
2 stops11h 11m
Sat 10/1011:10 am -
2 stops10h 33m
Deal found 8/31![United Airlines logo]()
$331
This American Airlines deal was found by Cheapflights users on 8/31. 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.
Sat 10/37:12 am -
1 stop6h 35m
Sat 10/1012:43 pm -
1 stop8h 16m
Deal found 8/31![American Airlines logo]()
$605
This United Airlines deal was found by Cheapflights users on 9/3. 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 1/235:08 pm -
1 stop5h 12m
Wed 1/274:03 pm -
2 stops18h 16m
Deal found 9/3![United Airlines logo]()
$503
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/275:02 pm -
1 stop5h 49m
Thu 10/291:32 pm -
1 stop4h 57m
Deal found 9/3![United Airlines logo]()
$657
Last-minute flights from Bismarck to OntarioDiscover last-minute flight deals from Bismarck to Ontario. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Bismarck to Ontario. Data last updated September 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/30. 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 9/106:00 am -
2 stops8h 12m
Tue 9/151:18 pm -
1 stop5h 00m
Deal found 8/30![United Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 8/30. 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 9/1111:12 am -
2 stops13h 28m
Tue 9/156:00 pm -
2 stops14h 32m
Deal found 8/30![Delta logo]()
$519
This Delta deal was found by Cheapflights users on 8/30. 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 9/1111:12 am -
2 stops13h 28m
Mon 9/146:00 pm -
2 stops14h 32m
Deal found 8/30![Delta logo]()
$549
This United Airlines deal was found by Cheapflights users on 8/30. 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 9/125:15 pm -
1 stop5h 38m
Tue 9/155:00 am -
1 stop5h 51m
Deal found 8/30![United Airlines logo]()
$571
This United Airlines deal was found by Cheapflights users on 8/31. 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 9/159:20 am -
1 stop5h 30m
Sat 9/195:00 am -
1 stop5h 51m
Deal found 8/31![United Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 10/110:15 pm -
1 stop10h 49m
Thu 10/81:38 pm -
1 stop5h 48m
Deal found 9/1![Multiple Airlines logo]()
$365
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/31:40 pm -
2 stops11h 11m
Sat 10/1011:10 am -
2 stops10h 33m
Deal found 8/31![United Airlines logo]()
$331
One-way flights from Bismarck to OntarioSearch for one-way flight options from Bismarck to Ontario. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from Bismarck to Ontario. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 9/102:40 pm -
2 stops30h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$430
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 9/107:12 am -
1 stop6h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![American Airlines logo]()
$452
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/305:00 pm -
1 stop5h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$559
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 September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $331 (United Airlines) |
Popular in | October |
Cheapest in | March |
Average price | $348 |
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 7,457,451 searches. Data last updated September 4, 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
Cheapest round-trip
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Sat 10/3
1:40 pm-10:51 pm
2 stops11h 11m
Ontario
Sat 10/10
11:10 am-11:43 pm
2 stops10h 33m
$331
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Thu 9/10
7:12 am-11:47 am
1 stop6h 35m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$452
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Sat 1/23
5:08 pm-8:20 pm
1 stop5h 12m
Ontario
Wed 1/27
4:03 pm-12:19 pm
2 stops18h 16m
$503
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Thu 9/10
2:40 pm-7:36 pm
3 stops30h 56m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$544
Quickest round-trip
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Wed 9/30
5:00 pm-8:58 pm
1 stop5h 58m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$559
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Mon 10/5
5:00 pm-8:58 pm
1 stop5h 58m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$559
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Sat 10/3
7:12 am-11:47 am
1 stop6h 35m
Ontario
Sat 10/10
12:43 pm-10:59 pm
1 stop8h 16m
$605
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Tue 10/27
5:02 pm-8:51 pm
1 stop5h 49m
Ontario
Thu 10/29
1:32 pm-8:29 pm
1 stop4h 57m
$657
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
BIS-ONT
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.
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