Cheap flights from San Francisco (SFO) to Illinois from $39

Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Illinois. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

Yes, there are multiple flights from San Francisco to Illinois for under $100. The cheapest flight booked recently is on Frontier for just $63, but on average you can expect to pay $78.

Cheapflights has at least 20 direct flights from San Francisco to Illinois under $100. A good price for a nonstop flight from San Francisco to Illinois is less than $53.

There are currently 20+ open flights from San Francisco to Illinois within the next 7 days for less than $300.

Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

On average, you can expect to see 17 flights from San Francisco to Illinois a day.
Morning (6am - Noon) - 18% of flight departures
Evening (6pm - Midnight) - 82% of flight departures

For as low as $63, Frontier can have you in Illinois from San Francisco in 4h 11m. Airlines will cover a distance of 1851 mi. All flights are typically nonstop.

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $39. United Airlines flights start at $69 while deals on Alaska Airlines start at $76 one-way.

The most popular route from San Francisco to Illinois is San Francisco - Chicago O'Hare Intl. You may also consider San Francisco - Chicago Midway or San Francisco - Lambert-St Louis.

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Illinois on time: Scandinavian Airlines (90%), Qatar Airways (86%), Brussels Airlines (85%).

Looking at all options, your cheapest flight can be booked for $109. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $150 on average our data indicates $967 when flying from San Francisco to Illinois.

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a San Francisco Airport to Chicago O'Hare Intl Airport flight would often be abbreviated as a SFO to ORD flight. Ready for more IATA code knowledge? These are related airports for your current travel destination: Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI).

The amount of baggage you can bring on your San Francisco to Illinois flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter San Francisco to Illinois flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Yes. In addition to deals on San Francisco to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Illinois.

Yes. Cheapflights offers flight deals from San Francisco to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Many airlines flying from San Francisco to Illinois offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on San Francisco to Illinois flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The San Francisco to Illinois flight deals you see on this page were last updated on 6/12.

The most popular airlines flying from San Francisco to Illinois are Undisclosed Carrier, American Airlines and Alaska Airlines. Something to consider prior to booking your flight.

Currently, February is the cheapest month in which you can book a flight from San Francisco to Illinois (average of $244). Flying from San Francisco to Illinois in July is currently the most expensive (average of $320). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.