Currently, the most affordable month to book a Finnair flight from London to Chicago O'Hare Intl Airport in January, with an average price of £601. Conversely, traveling with Finnair from London to Chicago O'Hare Intl Airport in July will be the most expensive, with an average cost of £775. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
£474
February
£489
March
£480
April
£491
May
£516
June
£594
July
£611
August
£563
September
£527
October
£510
November
£491
December
£495
CHI Temperature | -5 - 23 °C |
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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 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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