Cheap flights from Chicago to Boston from £84

In general, January is the cheapest month to fly from Chicago to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £152. The month of February is another great option to travel to Boston, with average flight prices from Chicago averaging around £175.

The cheapest day to depart on your flight to Boston is on a Sunday when prices can be found for as low as £130. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around £896. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boston.

Our most recent data shows that the best time of day to fly to Boston is in the evening. Flights from Chicago to Boston during this time can be as low as £170. In the afternoon is when there is more demand to fly to Boston, so prices are often more expensive at around £719 per ticket.

Fly from Chicago O'Hare Intl to Boston Logan Intl for the best Chicago - Boston Logan Intl flight prices

You are more likely to see cheaper flights to Boston from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around £204 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Chicago for as low as £175 on momondo.

There are 2 cabin classes available to choose from on Chicago to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 27% on your flight if you consider stops on a Chicago to Boston flight.

As of October 2026, prices for Chicago to Boston flights are approximately 0% more expensive when compared to flights at the same time last year.

Historically, on average around 26% of flights between Chicago and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 155 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the fewest delays on this route over the last 12 months, with about 22% of their flights experiencing any sort of delay.

As of October 2026, 60 flights take off from Chicago and land in Boston each day. The most common flight departure time for this route is 09:00, with 47% of daily flights taking off at midday.

424 flights are operational weekly from Chicago to Boston as of October 2026. The most popular departure day for this route is Thu, with 18% of flights per week taking off on this day.