ONT - BIS

$397 Find Cheap Flights from Ontario to Bismarck - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Bismarck departing on 9/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bismarck

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Bismarck, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Bismarck, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$397
American Airlines
Thu 9/17Wed 9/23
ONT - BIS • 2 stops
Cheapest one-way
$470
American Airlines
Thu 7/2
ONT - BIS • 1 stop
Top airlines
American Airlines
Cheapest • from $397 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Bismarck. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Dallas (DFW)
Cheapest • Avg $354 (round-trip)
Denver (DEN)
Shortest trip • 5h 41m (one-way)
Insights
Insights
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Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bismarck!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Bismarck (ONT-BIS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Bismarck that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Bismarck

Thu, Sep 17 - Wed, Sep 23
American Airlines Logo
7:11 pm - 1:27 pm
ONT
-
BIS
16h 16m
2 stops
American Airlines Logo
7:12 am - 1:25 pm
BIS
-
ONT
8h 13m
1 stop
$397American Airlines
Sat, Nov 21 - Fri, Nov 27
Delta Logo
6:00 am - 4:54 pm
ONT
-
BIS
8h 54m
2 stops
Delta Logo
7:31 am - 5:17 pm
BIS
-
ONT
11h 46m
2 stops
$425Delta
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
5:00 am - 12:19 pm
ONT
-
BIS
5h 19m
1 stop
United Airlines Logo
9:00 am - 8:06 pm
BIS
-
ONT
13h 06m
2 stops
$462United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
9:00 am - 11:47 pm
ONT
-
BIS
12h 47m
2 stops
United Airlines Logo
9:00 am - 8:06 pm
BIS
-
ONT
13h 06m
2 stops
$467United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
5:00 am - 12:19 pm
ONT
-
BIS
5h 19m
1 stop
United Airlines Logo
5:50 am - 8:56 pm
BIS
-
ONT
17h 06m
1 stop
$498United Airlines
Sun, Nov 22 - Fri, Nov 27
Delta Logo
6:00 am - 4:54 pm
ONT
-
BIS
8h 54m
2 stops
Delta Logo
7:31 am - 5:17 pm
BIS
-
ONT
11h 46m
2 stops
$499Delta
Tue, Jul 7 - Sat, Jul 11
American Airlines Logo
2:15 pm - 10:56 pm
ONT
-
BIS
6h 41m
1 stop
American Airlines Logo
6:00 am - 1:22 pm
BIS
-
ONT
9h 22m
1 stop
$549American Airlines
Sun, Nov 22 - Fri, Nov 27
United Airlines Logo
5:00 am - 12:19 pm
ONT
-
BIS
5h 19m
1 stop
United Airlines Logo
9:00 am - 12:42 pm
BIS
-
ONT
5h 42m
1 stop
$562United Airlines
Tue, Sep 8 - Sat, Sep 12
United Airlines Logo
9:01 am - 11:38 pm
ONT
-
BIS
12h 37m
2 stops
United Airlines Logo
6:00 am - 12:12 pm
BIS
-
ONT
8h 12m
2 stops
$570United Airlines
Tue, Sep 8 - Sat, Sep 12
United Airlines Logo
9:01 am - 11:38 pm
ONT
-
BIS
12h 37m
2 stops
United Airlines Logo
5:15 pm - 8:53 pm
BIS
-
ONT
5h 38m
1 stop
$574United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Bismarck flights

Get data-powered insights and trends into flights from Ontario to Bismarck to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Bismarck?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Ontario to Bismarck were found on American Airlines ($397) and Delta ($425).

Find deals

Good to know

Cheapest flight$397
Flight from Ontario to Bismarck

When to book flights from Ontario to Bismarck

Are your dates flexible? Find out the best times to travel from Ontario to Bismarck based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Bismarck

  • What is the cheapest flight from Ontario to Bismarck?

    In the last 5 days, the lowest price for a flight from Ontario to Bismarck was $470 for a one-way ticket and $397 for a round-trip.

  • Do I need a passport to fly between Ontario and Bismarck?

    No, a passport isn't needed to fly from Ontario to Bismarck. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Ontario to Bismarck?

    Ontario airport is called Ontario and the only airport in Bismarck is Bismarck.

  • Which aircraft models fly most regularly from Ontario to Bismarck?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Bismarck?

    Star Alliance is the only airline alliance operating flights between Ontario and Bismarck.

  • How does KAYAK find such low prices on flights from Ontario to Bismarck?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Bismarck.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Bismarck?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bismarck from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Bismarck?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bismarck with an airline and back to Ontario with another airline. Booking your flights between Ontario and BIS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Bismarck?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bismarck from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Bismarck

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Bismarck. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Bismarck? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9896 reviews
7.3Comfort
7.7Boarding
6.6Food
7.1Entertainment
8.1Crew
Airline reviews

Great staff. Clean plane, but we were delayed for more than an hour due to maintenance issues and had to board another plane.

8.0 ExcellentNico, Jun 2026
LAX - HNL
Read more United Airlines reviews

Great staff. Clean plane, but we were delayed for more than an hour due to maintenance issues and had to board another plane.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

Service was professional and quick. Premium economy seat was comfortable given the class

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Over 2.5 hour maintenance delay on first morning flight with no acknowledgement, compensation or even gesture of good will. Aircraft had overnighted at airport so issue should have been addressed prior to boarding. Over 3.5 hours before first slow and deliberate beverage service.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

A/C still wasn't working. Luckily it was only a 14 minute flight

A/C wasn't working. Made the 1.25 hour flight seem like 4 hours! Even at altitude it didn't cool down.

Everything you need to know for your flight from Ontario to Bismarck

Information on your arrival and departure airports

Ontario (ONT)
Bismarck (BIS)