Currently, the most affordable month to book a United Airlines flight from Boston to Chicago O'Hare Intl Airport in February, with an average price of $245. Conversely, traveling with United Airlines from Boston to Chicago O'Hare Intl Airport in June will be the most expensive, with an average cost of $357. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
$248
February
$245
March
$280
April
$276
May
$283
June
$357
July
$336
August
$276
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 O'Hare Intl Airport, 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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