Cheap flights from Chicago to San Francisco from $53
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to San Francisco departing on 8/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from Chicago to San Francisco
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Southwest flights from Chicago to San Francisco
Our best Southwest deals on Chicago to San Francisco flight tickets
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How to get the cheapest flight ticket from Chicago to San Francisco
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Chicago and San Francisco?
What is the cheapest month to fly to San Francisco?
If you aren’t able to travel to San Francisco during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $287.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart from Chicago to San Francisco is on a Thursday when prices can be found for as low as $359. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $522.
What is the cheapest time of day to depart on your flight to San Francisco?
Our data shows that the cheapest Chicago to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $381. Flights in the afternoon are often more expensive with an average ticket price of $434.
What is the cheapest Chicago to San Francisco flight route?
Fly from Chicago O'Hare Intl to San Francisco for the best Chicago - San Francisco flight prices
How far in advance should I book a flight to San Francisco?
You are more likely to see cheaper flights to San Francisco from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $315 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Chicago for as low as $270 on momondo.
What cabin class options are available on Chicago to San Francisco flights?
There are 4 cabin classes available to choose from on Chicago to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Chicago to San Francisco flights?
No. A direct flight is the cheapest option for a flight between Chicago to San Francisco.
How have Chicago to San Francisco flight prices changed over time?
As of July 2025, prices for Chicago to San Francisco flights are approximately 26% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Chicago to San Francisco?
Frontier, United Airlines, and Southwest are the most popular carriers operating from Chicago to San Francisco
What airlines fly to San Francisco?
United Airlines, American Airlines and Alaska Airlines are the top three most popular airlines that fly to San Francisco from Chicago according to our data. United Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 8 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago to San Francisco on average per day?
The number of flights available between Chicago and San Francisco is 65 per day as of July 2025. The most frequent departure time is 6:00PM, with 41% of daily flights leaving in the afternoon.
How many flights depart from Chicago to San Francisco on average per week?
458 flights are operational weekly from Chicago to San Francisco as of July 2025. The most popular departure day for this route is Wed, with 21% of flights per week taking off on this day.
When to book flights from Chicago to San Francisco
Cheap Chicago to San Francisco (CHI to SFO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to San Francisco
Best Price Found | $53 |
|---|---|
Fastest flight time | 4h 30m |
Direct flights | Every day |
Airports in San Francisco | 1 airport |
How far is Chicago to San Francisco by plane?
San Francisco is 1852.8 mi away from Chicago. Typically, this will take 4h 30m by plane in normal conditions.
When did momondo last update prices for flights from Chicago to San Francisco Airport?
Prices for flights from Chicago to San Francisco Airport refresh daily.
How many operators does momondo search for flights from Chicago to San Francisco Airport?
As of July 2025, there are 7 operators available to choose from for flights from Chicago to San Francisco Airport.
How old do you have to be to fly from Chicago to San Francisco Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to San Francisco?
momondo data reveals that the most frequently booked plane model on the route from Chicago to San Francisco is Boeing 757-300, representing 17.58% of all bookings. The subsequent popular models are Airbus A321neo at 17.27%, Boeing 737-800 at 16.79%, and Boeing 777 at 12.80%.
What is the most popular airline from Chicago to San Francisco?
momondo data reveals that the most frequently booked airline on the route from Chicago to San Francisco is United Airlines, representing 50% of all bookings. The subsequent popular airlines are American Airlines at 30%, Frontier at 8%, and Alaska Airlines at 8%.
Best airlines flying from Chicago to San Francisco
Compare and see reviews for airlines that fly from Chicago to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $61 | Free Cancellation | Rating 5.9 3,286 reviews | |||
| PriceFrom $108 | Free Cancellation | Rating 7.8 2,545 reviews | |||
| PriceFrom $128 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $179 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $187 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $197 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $226 | Free Cancellation | Rating 8.0 4,266 reviews |
Alaska Airlines Flights From Chicago to San Francisco
Alaska Airlines operates around 2 flights from Chicago to San Francisco every week. The average price of these flights found in the last 72 hours has been $288, but momondo users have found Alaska Airlines deals from Chicago to San Francisco from as low as $187 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.
Southwest Flights From Chicago to San Francisco
$226 is the best Southwest flight deal from Chicago to San Francisco found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $386, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,266 user reviews) flies into San Francisco from Chicago 6 times in an average week so prices can vary.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Chicago to San Francisco?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Chicago.
Can I find flights from Chicago to San Francisco with flexible booking policies on momondo?
Yes. All flights to San Francisco from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Chicago to San Francisco?
Once you have performed a search for Chicago to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Chicago to San Francisco right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Chicago to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.