Cheap flights from San Francisco to Chicago O'hare International Airport from £228

from as little as £228

7 nights in Chicago, departing San Francisco on 05 / Sep / 2025 with Alaska Airlines (price found 1 hour ago)

Subject to availability, prices correct of the last 24 hours
Chicago O'hare International Airport

The San Francisco / Chicago O'hare International Airport route

All 2966 km of it

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Chicago O'hare International Airport flight facts

What you need to know

Alternative flights from the UK to Chicago O'hare International Airport

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Alternative flights from San Francisco to Chicago O'hare International Airport

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Chicago O'hare International Airport

05 / Sep / 2025 is currently the lowest priced day of the year to fly the San Francisco/Chicago O'hare International Airport route. There are around 50 flights on any given week from the UK to Chicago O'hare International Airport and the cheapest month to fly right now is September.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

-9 °C

AVG

10 °C

HIGHEST

29 °C

Rainfall (mm)
LOWEST

43.2 mm

AVG

78.5 mm

HIGHEST

124.5 mm

Key facts about Chicago O'hare International Airport

How to get cheap flights from San Francisco to Chicago O'hare International Airport

Tips and advice from our flight experts

There are three airlines offering flights to Chicago. The most direct route isn’t necessarily the cheapest – being flexible is key to finding the lowest airfare rates. For example, try searching by month to see the best time of the week to fly. The cheapest date is currently 05 / Sep / 2025.

You can use the filters on your search to see more flights and find cheaper rates – Chicago has more than one airport. So if you don't need to fly into Chicago O'hare International Airport, it's worth checking your other options. The 2966 km flight usually takes about 9 hrs 5 mins.

There are about 50 flights to or via Chicago every week, so you have plenty of options. Keep your eye out for flights

During this peak season, hotel and holiday prices often increase too, so it's best to book early. Or you could keep your fingers crossed and hold out for a last-minute deal.

Other popular destinations near Chicago O'hare International Airport

Where other people are flying to

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