Currently, the most affordable month to book a United Airlines flight from Boston to Chicago in February, with an average price of $245. Conversely, traveling with United Airlines from Boston to Chicago in June will be the most expensive, with an average cost of $361. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
$248
February
$245
March
$280
April
$286
May
$291
June
$361
July
$336
August
$277
September
$258
October
$248
November
$270
December
$248
CHI Temperature | 23 - 73.4 °F |
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If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
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