Currently, the most affordable month to book a United Airlines flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago in January, with an average price of C$ 261. Conversely, traveling with United Airlines 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$ 357
February
C$ 416
March
C$ 444
April
C$ 456
May
C$ 523
June
C$ 553
July
C$ 590
August
C$ 601
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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