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Cheap Flights from Bismarck to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sort by: Cheapest
Chicago
2h 18mNonstop
from $325per person
St. Louis
5h 10m2 stops
from $349per person
Booking Insights

KAYAK's insights & trends for Bismarck to Illinois flights

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

What is the cheapest Bismarck to Illinois flight route?

The cheapest ticket to Illinois from Bismarck found in the last 5 days was to Chicago, at $355 round-trip. The most popular route is from Bismarck (BIS) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $355.

What is the cheapest time of day to fly to Illinois?

The cheapest time of day to fly to Illinois is generally in the afternoon, when round-trip flights cost $506 on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $518.

Can I save money by flying with a layover from Bismarck to Illinois?

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $415 on average.

What is the cheapest month to fly from Bismarck to Illinois?

The cheapest month for flights from Bismarck to Illinois is November, when tickets cost $262 (return) on average. On the other hand, the most expensive months are December and May, when the average cost of round-trip tickets is $685 and $663 respectively.

What’s the cheapest day of the week to fly from Bismarck to Illinois?

When flying from Bismarck to Illinois, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Bismarck, you’ll find the best rates on Saturdays and the most expensive ones on Mondays.

Good to know

Low season

March
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 34% lower on average.

FAQs - booking Illinois flights

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

    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 Bismarck to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Bismarck to Illinois 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 Bismarck to Illinois?

    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 from Bismarck to Illinois with an airline and back with another airline.

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

    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 from Bismarck to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Bismarck to the following destinations at these prices or less: Chicago $268 one-way - $438 round-trip

Reviews of the top airlines flying from Bismarck to Illinois

 
Need help choosing which airline to fly with from Bismarck to Illinois? 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.
7.8
DeltaOverall score based on 8554 reviews
8.1Boarding
8.5Crew
7.2Food
7.8Comfort
7.8Entertainment
Airline reviews

Sat in the tarmac at O’Hare for 65 minutes. This is a regular occurrence for delta at O’Hare

6.0 GoodSusan, Sep 2026
Read more Delta reviews

Sat in the tarmac at O’Hare for 65 minutes. This is a regular occurrence for delta at O’Hare

Delta was fine though my flight was delayed 4 hours into LGA and my return into ORD involved a taxi of 1+ hour to the gate

It was as good as it could be. Flying is not a pleasant experience these days.

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

Got on the plane and sat there for an hour before departure.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

Cramped seating for me. Luckily it wasn’t a long flight

5 hour delay. They blamed the weather but it was the computer issues they had been dealing with for days.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Our flight from Chicago to Des Moines was the problem flight due to a dismissive flight attendant. His conduct was unnecessary and unprofessional.. I will avoid using Americam Airlines again because of the situation. Very disappointing.

Mostly excellent. However, many too many gate changes. Connecting flight at ORD changed gate 6 times.

Mechanical issues and delays. I get it but bad experience. Turned my 3 hour airport experience into a 9 hours

The baggage process at the gate was terrible. Stay was not friendly at all

Flight was delayed because of mechanical. Could not get landing space which caused me to miss my connection. Messy and not organized.

We landed slightly early but then sat in holding area waiting for our gate to clear out for about an hour, so technically we arrived one hour late at the gate at ORD. The airport may be partially responsible here, but regardless of who is responsible, it was a bad experience to be so close yet unable to get off the plane.

Delays and cancellations. Mechanics weren’t on site. Replacement plane took hours to arrive although it should have arrived within 90 minutes. Flight back was cancelled. Ended up driving over 12 hours and wasting 3 days between everything.

Little bit of trouble getting my KTN and pre-check status onto the ticket, but otherwise the counter staff were friendly and truly concerned to get it right.

The flight could have actually taken place. Canceled flight and no option to rebook that day.

The flight was fine but the 8 hour delay in Chicago was awful - 5 gate changes and repeated delays without an explanation. No vouchers. Nothing.

More options for your flight from Bismarck to Illinois

Complete your trip to Illinois with a hotel stay or car rental