Cheap flights from Fargo to Illinois from $120

The cheapest month to fly to Illinois from Fargo is in February. Flight prices, which tend to average around $285, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $296.

The cheapest day to depart from Fargo to Illinois is on a Saturday when prices can be found for as low as $465. Flights from Fargo to Illinois on a Sunday will generally be more expensive and average around $700. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Fargo to Illinois during this time can be as low as $490. Flights at noon are often more expensive with an average ticket price of $554.

Fly from Fargo Hector Field to Chicago O'Hare Intl for the best Fargo Hector Field - Illinois flight prices

You are more likely to see cheaper flights to Illinois from Fargo when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $346 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Fargo for as low as $246 on momondo.

There are 4 cabin classes available to choose from on Fargo to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier, American Airlines, and Delta are the most popular carriers operating from Fargo Hector Field to Illinois

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Illinois from Fargo according to our data. American Airlines is the first choice among our users, with 66% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

The number of flights available between Fargo and Illinois is 15 per day as of October 2026. The most frequent departure time is 12:00PM, with 56% of daily flights leaving in the afternoon.

As of October 2026, 107 flights take off from Fargo and land in Illinois each week. The most common flight departure day for this route is Fri, with 22% of weekly flights taking off on this day.