The cheapest times to fly from ISN to ORD are
- January 1st to March 4th
- April 23rd to May 6th
- August 13th to November 18th (except the week of October 8th)
- December 3rd to March 4th (except the weeks of December 17th and December 24th)
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 ISN to ORD is late September. Prices can be as high as $719 for Monday flights during mid December, or as low as $286 for Tuesday flights around late September.
When to Fly to Chicago
Flying from Williston, ND (ISN) to Chicago, IL (ORD) will usually cost between $307 to $596 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late September with an average ticket price of $343. Due to high demand the most expensive time to fly is mid December, with an average price of $575. Planning your trip to low-cost times can easily save you $232 on economy flights and even more on first-class flights. Generally, any price below $434 can be considered a good price for a round-trip ISN to ORD flight.
See below for a graph of average weekly prices for the ISN to ORD route. All prices are for round-trip tickets in USD.
Compared to other flights, the ISN to ORD flight is much cheaper than the average and costs much less than the average flight leaving from Williston. 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 $401. Return trip prices are from the ORD to ISN 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 ISN to ORD 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 ISN to ORD while comparing.
- 137 miles (220 km) away from ORD
- Usually 0.92% less expensive than ORD
- 1-layover flights available
Flight Questions Answered
Still have questions about flying from ISN to ORD? We’ve got answers.
Which airlines fly this route?
You can find 3 major airlines flying this route most often: Cape Air, Delta, United, and potentially more during busy seasons.
How far away is it from Chicago O’Hare International Airport to Sloulin Field International Airport?
The distance between the two airports is roughly 877 miles or 1411 kilometers.
How long does it take to fly from ISN to ORD?
The real-world flight time for a nonstop ISN to ORD flight is about 2 hour 34 minutes.
How many flights go between Williston, ND and Chicago, IL?
It depends on the day of the week and the date, but a typical day might have around 54 available flights from ISN to ORD.
Airport Location Info
|Origination airport name||Sloulin Field International Airport|
|Country||the United States|
|Destination airport name||Chicago O’Hare 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.