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Best Time to Fly from Chicago to Oslo
Real weather data for Oslo by month and real day-of-week fare patterns for this route — so "best time" here means something you can check, not a generic guess.
General booking pattern
Without route-specific fare history, the general industry pattern holds: mid-week flights — especially Tuesday and Wednesday — tend to be cheaper than weekend departures. This is general advice, not a fact about this specific route.
Weather in Oslo by month
Based on the last 3 years of real historical data. July runs warmest (21°C avg high). May runs driest (~40mm rain).
January
-2° / -9°C
~86mm rain
February
1° / -7°C
~55mm rain
March
4° / -5°C
~59mm rain
April
10° / 0°C
~81mm rain
May
18° / 6°C
~40mm rain
June
20° / 10°C
~86mm rain
July
21° / 12°C
~152mm rain
August
19° / 11°C
~154mm rain
September
16° / 8°C
~118mm rain
October
9° / 3°C
~78mm rain
November
3° / -2°C
~75mm rain
December
0° / -4°C
~58mm rain
Nearby airports
Near Chicago
- Chicago Midway International Airport (MDW)25 km
- Gary Chicago International Airport (GYY)57 km
- Michigan City Municipal Airport (MGC)95 km
More about this route
FAQs — Best time to fly Chicago to Oslo
We don't have a live fare history for this specific route yet — mid-week departures (Tuesday and Wednesday) are typically cheaper as a general industry pattern.