The cheapest times to fly from ORD to ISN are
- April 23rd to May 6th
- May 21st to June 3rd
- August 13th to October 7th
- October 22nd to November 4th
based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ORD to ISN is early to mid January. Prices can be as high as $786 for Monday flights during late July, or as low as $286 for Tuesday flights around early to mid January.
When to Fly to Williston
Flying from Chicago, IL (ORD) to Williston, ND (ISN) will usually cost between $303 to $594 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid January with an average ticket price of $354. Due to high demand the most expensive time to fly is late July, with an average price of $551. Planning your trip to low-cost times can easily save you $197 on economy flights and even more on first-class flights. Generally, any price below $432 can be considered a good price for a round-trip ORD to ISN flight.
See below for a graph of average weekly prices for the ORD to ISN route. All prices are for round-trip tickets in USD.
Compared to other flights, the ORD to ISN flight is much cheaper than the average and costs much less than the average flight leaving from Chicago. The average price per mile (for a direct flight) is $0.31, which is in the normal range for a flight.
Flight Prices by Day of the Week
Tuesday is usually the cheapest day to depart and return on this flight. Mondays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $122 (23%) on this flight.
Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $402. Return trip prices are from the ISN to ORD flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
Return Trip Prices by Day
Nonstop Flights and Layovers
Travelers looking to fly from ORD to ISN can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 2 hour 34 minutes may not be realistic.
Alternative Nearby Airports
Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from ORD to ISN while comparing.
- 109 miles (175 km) away from ISN
- Usually 8.68% less expensive than ISN
- 1-layover flights available
Flight Questions Answered
Still have questions about flying from ORD to ISN? We’ve got answers.
Which airlines fly this route?
You can find 2 major airlines flying this route most often: Delta, United, and potentially more during busy seasons.
How far away is it from Sloulin Field International Airport to Chicago O’Hare International Airport?
The distance between the two airports is roughly 877 miles or 1411 kilometers.
How long does it take to fly from ORD to ISN?
The real-world flight time for a nonstop ORD to ISN flight is about 2 hour 34 minutes.
How many flights go between Chicago, IL and Williston, ND?
It depends on the day of the week and the date, but a typical day might have around 19 available flights from ORD to ISN.
Airport Location Info
|Origination airport name||Chicago O’Hare International Airport|
|Country||the United States|
|Destination airport name||Sloulin Field International Airport|
|Country||the United States|
Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.