Currently, the most affordable month to book a Air Canada flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago in January, with an average price of C$ 261. Conversely, traveling with Air Canada from Montreal Pierre Elliott Trudeau Intl Airport to Chicago in August will be the most expensive, with an average cost of C$ 439. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
C$ 358
February
C$ 417
March
C$ 444
April
C$ 456
May
C$ 534
June
C$ 582
July
C$ 599
August
C$ 602
September
C$ 471
October
C$ 511
November
C$ 463
December
C$ 478
CHI Temperature | -5 - 23 °C |
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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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).
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