$220+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
BIS — ONT
Oct 10 — Oct 171
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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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 10, 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 10, 2026.
This Delta deal was found by Cheapflights users on 9/5. 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 10/275:00 am -
2 stops9h 36m
Wed 11/111:15 pm -
2 stops8h 14m
Deal found 9/5![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 9/5. 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 10/275:00 am -
2 stops9h 36m
Fri 11/131:15 pm -
2 stops8h 14m
Deal found 9/5![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 9/5. 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 10/275:00 am -
2 stops9h 36m
Thu 11/121:15 pm -
2 stops8h 14m
Deal found 9/5![Delta logo]()
$390
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/149:00 am -
1 stop5h 33m
Wed 11/181:35 pm -
2 stops8h 09m
Deal found 9/9![United Airlines logo]()
$416
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Tue 10/272:07 pm -
1 stop9h 04m
Wed 11/1112:42 pm -
1 stop7h 04m
Deal found 9/5![American Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 9/5. 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
Sat 11/141:29 pm -
1 stop5h 00m
Deal found 9/5![United Airlines logo]()
$431
This United Airlines deal was found by Cheapflights users on 9/5. 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
Fri 11/131:32 pm -
1 stop4h 57m
Deal found 9/5![United Airlines logo]()
$440
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 10, 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 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/8. 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 11/149:00 am -
1 stop5h 33m
Wed 11/181:35 pm -
2 stops8h 09m
Deal found 9/8![United Airlines logo]()
$416
This United Airlines deal was found by Cheapflights users on 9/5. 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
Tue 11/171:35 pm -
2 stops8h 09m
Deal found 9/5![United Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/265:02 pm -
1 stop5h 49m
Sun 11/155:00 am -
1 stop5h 27m
Deal found 9/5![United Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 9/8. 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 11/115:02 pm -
1 stop5h 49m
Sun 11/155:00 am -
1 stop5h 27m
Deal found 9/8![United Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 9/5. 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 1/275:00 am -
1 stop5h 19m
Deal found 9/5![United Airlines logo]()
$529
This United Airlines deal was found by Cheapflights users on 9/9. 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
Mon 10/125:00 am -
1 stop16h 43m
Deal found 9/9![United Airlines logo]()
$537
Last-minute flights from Bismarck to OntarioDiscover last-minute flight deals from Bismarck to Ontario. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Bismarck to Ontario. Data last updated September 10, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/265:02 pm -
1 stop5h 49m
Wed 11/111:35 pm -
2 stops8h 09m
Deal found 9/5![United Airlines logo]()
$480
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/265:02 pm -
1 stop5h 49m
Fri 11/135:00 am -
1 stop5h 27m
Deal found 9/5![United Airlines logo]()
$484
This Delta deal was found by Cheapflights users on 9/5. 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 10/275:00 am -
2 stops9h 36m
Tue 11/171:15 pm -
2 stops8h 14m
Deal found 9/5![Delta logo]()
$351
This Delta deal was found by Cheapflights users on 9/5. 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 10/275:00 am -
2 stops9h 36m
Fri 11/131:15 pm -
2 stops8h 14m
Deal found 9/5![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 9/5. 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 10/275:00 am -
2 stops9h 36m
Thu 11/121:15 pm -
2 stops8h 14m
Deal found 9/5![Delta logo]()
$390
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Tue 10/272:07 pm -
1 stop9h 04m
Wed 11/1112:42 pm -
1 stop7h 04m
Deal found 9/5![American Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 9/5. 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
Sat 11/141:29 pm -
1 stop5h 00m
Deal found 9/5![United Airlines logo]()
$431
This United Airlines deal was found by Cheapflights users on 9/5. 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
Fri 11/131:32 pm -
1 stop4h 57m
Deal found 9/5![United Airlines logo]()
$440
This Delta deal was found by Cheapflights users on 9/5. 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 10/275:00 am -
2 stops9h 36m
Sat 11/141:15 pm -
2 stops8h 14m
Deal found 9/5![Delta logo]()
$460
This United Airlines deal was found by Cheapflights users on 9/5. 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
Sun 11/155:00 am -
1 stop5h 27m
Deal found 9/5![United Airlines logo]()
$475
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 10, 2026.
Search for one-way flight options from Bismarck to Ontario. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$220
This United Airlines deal was found by Cheapflights users on 9/7. 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 12/251:07 pm -
2 stops11h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$344
This American Airlines deal was found by Cheapflights users on 9/7. 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 12/242:09 pm -
1 stop9h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$360
This United Airlines deal was found by Cheapflights users on 9/7. 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 12/241:07 pm -
2 stops11h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$375
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 12/226:45 am -
1 stop8h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Mon 12/216:45 am -
1 stop8h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Sun 12/205:10 pm -
1 stop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 9/7. 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 12/236:45 am -
1 stop8h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 9/7. 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 12/195:10 pm -
1 stop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$462
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $351 (Delta) |
One-way from | $220 (Kiwi.com) |
Popular in | October |
Cheapest in | March |
Average price | $358 |
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 10, 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
Thu 10/1
10:15 pm-7:04 am
1 stop10h 49m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$220
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Fri 12/25
1:07 pm-10:53 pm
2 stops11h 46m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$344
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Thu 12/24
1:07 pm-10:53 pm
2 stops11h 46m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$375
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Sat 11/14
9:00 am-12:33 pm
1 stop5h 33m
Ontario
Wed 11/18
1:35 pm-11:44 pm
2 stops8h 09m
$416
Quickest round-trip
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Sun 12/20
5:10 pm-9:00 pm
1 stop5h 50m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$423
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Tue 10/27
5:02 pm-8:51 pm
1 stop5h 49m
Ontario
Tue 11/17
1:35 pm-11:44 pm
2 stops8h 09m
$436
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Sat 12/19
5:10 pm-9:00 pm
1 stop5h 50m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$462
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Sun 12/20
8:03 am-11:59 pm
2 stops17h 56m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$473
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Fri 2/26
6:30 pm-6:39 pm
2 stops26h 09m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$491
BismarckOntario
BIS Bismarck - ONT Ontario
BISONT
Bismarck
Mon 10/26
5:02 pm-8:51 pm
1 stop5h 49m
Ontario
Sun 11/15
5:00 am-12:27 pm
1 stop5h 27m
$519
Showing 1-10 of 13 resultsSorted 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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