ORD - SFO

C$ 124 Find Cheap Flights from Chicago to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to San Francisco departing on 30/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to San Francisco, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Chicago to San Francisco (ORD-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to San Francisco

Tue, 19 Aug - Wed, 27 Aug
United Airlines Logo
7:43 p.m. - 10:34 p.m.ORD-SFO
4h 51mdirect
United Airlines Logo
5:15 a.m. - 11:46 a.m.SFO-ORD
4h 31mdirect
C$ 271United Airlines
Find Deal
Sun, 24 Aug - Sat, 30 Aug
United Airlines Logo
6:15 a.m. - 8:56 a.m.ORD-SFO
4h 41mdirect
United Airlines Logo
11:59 p.m. - 6:15 a.m.SFO-ORD
4h 16mdirect
C$ 272United Airlines
Find Deal
Sat, 20 Dec - Sun, 4 Jan
United Airlines Logo
10:00 p.m. - 1:04 a.m.ORD-SFO
5h 04mdirect
United Airlines Logo
5:00 a.m. - 11:25 a.m.SFO-ORD
4h 25mdirect
C$ 285United Airlines
Find Deal
Sun, 31 Aug - Tue, 2 Sep
Southwest Logo
7:30 a.m. - 11:55 a.m.ORD-SFO
6h 25m1 stop
Southwest Logo
12:45 p.m. - 10:20 p.m.SFO-ORD
7h 35m1 stop
C$ 286Southwest
Find Deal
Fri, 12 Dec - Mon, 15 Dec
American Airlines Logo
11:45 a.m. - 2:40 p.m.ORD-SFO
4h 55mdirect
American Airlines Logo
11:50 p.m. - 6:04 a.m.SFO-ORD
4h 14mdirect
C$ 297American Airlines
Find Deal
Tue, 26 Aug - Wed, 27 Aug
Southwest Logo
3:00 p.m. - 9:40 p.m.ORD-SFO
8h 40m1 stop
Southwest Logo
12:20 p.m. - 11:05 p.m.SFO-ORD
8h 45m1 stop
C$ 299Southwest
Find Deal
Thu, 28 Aug - Sun, 31 Aug
Southwest Logo
5:25 p.m. - 10:40 p.m.ORD-SFO
7h 15m1 stop
Southwest Logo
7:15 a.m. - 5:55 p.m.SFO-ORD
8h 40m1 stop
C$ 300Southwest
Find Deal
Wed, 5 Nov - Mon, 10 Nov
Alaska Airlines Logo
9:20 a.m. - 10:01 p.m.ORD-SFO
14h 41m1 stop
Alaska Airlines Logo
9:58 p.m. - 6:59 p.m.SFO-ORD
19h 01m1 stop
C$ 308Alaska Airlines
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Tue, 11 Nov - Sun, 16 Nov
Alaska Airlines Logo
2:54 p.m. - 10:01 p.m.ORD-SFO
9h 07m1 stop
Alaska Airlines Logo
8:00 a.m. - 5:01 a.m.SFO-ORD
19h 01m1 stop
C$ 311Alaska Airlines
Find Deal
Fri, 12 Dec - Mon, 15 Dec
Frontier Logo
7:39 p.m. - 12:25 a.m.ORD-SFO
6h 46m1 stop
Frontier Logo
6:21 a.m. - 6:34 p.m.SFO-ORD
10h 13m1 stop
C$ 349Frontier
Find Deal
Expert advice

Expert advice for your flight from Chicago to San Francisco

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
ORD

At ORD, security lines can be 30 minutes or longer during peak times. Arrive early to avoid delays.

Read more about ORDby Stefanie Waldek
SFO

For a smooth arrival at SFO, consider taking BART to the city. It's affordable and avoids traffic.

Read more about SFOby Blane Bachelor
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on ORD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Booking Insights

KAYAK's insights & trends for Chicago to San Francisco flights

Get data-powered insights and trends into flights from Chicago to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chicago to San Francisco?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to San Francisco clicked on KAYAK for each day over the last 12 months.

When flying from Chicago to San Francisco, you should consider leaving on a Friday and avoid Sundays if you are looking for the best rates. For your return to Chicago, you’ll find the best rates on Saturdays and the most expensive ones on Wednesdays.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to San Francisco is April, where tickets cost C$ 395 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is C$ 527 and C$ 479 respectively.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to San Francisco?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago O'Hare Intl Airport to San Francisco, you should book around 4 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.


Good to know

Low seasonFebruary
Cheapest flightC$ 124
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (5% more expensive on average)
Flight from Chicago to San Francisco

When to book flights from Chicago to San Francisco

Are your dates flexible? Find out the best times to travel from Chicago to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to San Francisco flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to San Francisco?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to San Francisco was C$ 90 for a one-way ticket and C$ 197 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to San Francisco?

    American Airlines, Alaska Airlines, Hawaiian Airlines, and Delta offer inflight Wi-Fi service on the Chicago to San Francisco flight route.

  • Which aircraft models fly most regularly from Chicago to San Francisco?

    The Boeing 757-300 is the aircraft model that flies most regularly on the Chicago to San Francisco flight route.

  • Which airline alliances offer flights from Chicago to San Francisco?

    oneworld, and Star Alliance are the airline alliances operating flights between Chicago and San Francisco, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Chicago to San Francisco?

    There are direct flights from Chicago to San Francisco on a daily basis.

  • How does KAYAK find such low prices on flights from Chicago to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Chicago is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago O'Hare Intl Airport to San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 425 or less one-way and C$ 409 or less round-trip.

Prefer to fly direct from Chicago to San Francisco?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago O'Hare Intl to San Francisco.
Find which airlines fly direct from Chicago O'Hare Intl Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to San Francisco

Monday

ANA,Aer Lingus,Air Canada, +20 more

ANA,Aer Lingus, +21 more

Tuesday

ANA,Aer Lingus,Air Canada, +21 more

ANA,Aer Lingus, +22 more

Wednesday

ANA,Aer Lingus,Air Canada, +20 more

ANA,Aer Lingus, +21 more

Thursday

ANA,Aer Lingus,Air Canada, +21 more

ANA,Aer Lingus, +22 more

Friday

ANA,Aer Lingus,Air Canada, +20 more

ANA,Aer Lingus, +21 more

Saturday

ANA,Aer Lingus,Air Canada, +23 more

ANA,Aer Lingus, +24 more

Sunday

ANA,Aer Lingus,Air Canada, +20 more

ANA,Aer Lingus, +21 more

See more nonstop flights

Direct returns

San Francisco to Chicago O'Hare Intl

Monday

ANA,Aer Lingus,Air Canada, +21 more

ANA,Aer Lingus, +22 more

Tuesday

ANA,Aer Lingus,Air Canada, +22 more

ANA,Aer Lingus, +23 more

Wednesday

ANA,Aer Lingus,Air Canada, +22 more

ANA,Aer Lingus, +23 more

Thursday

ANA,Aer Lingus,Air Canada, +22 more

ANA,Aer Lingus, +23 more

Friday

ANA,Aer Lingus,Air Canada, +21 more

ANA,Aer Lingus, +22 more

Saturday

ANA,Aer Lingus,Air Canada, +23 more

ANA,Aer Lingus, +24 more

Sunday

ANA,Aer Lingus,Air Canada, +21 more

ANA,Aer Lingus, +22 more

See more nonstop flights

Reviews of the top airline flying from Chicago to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Chicago to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
5.9
FrontierOverall score based on 3237 reviews
6.7Crew
5.6Comfort
6.1Boarding
4.5Entertainment
4.7Food
Airline reviews

Boarding in Orlando was not good. Giant mob at the gate, should have been lines.

8.0 ExcellentJim, Jul 2025MCO - LAS
Read more Frontier reviews

Boarding in Orlando was not good. Giant mob at the gate, should have been lines.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

baggage clamed had to wait over a hour and half for all people on my flight it was terrible

The ticketing agents were rude but then we had a great gate agent very nice we had to ride a buss out to where the plane was parked but it was in some back corner of the airport when we got to the plane the captain who was great btw was cleaning the plane because the same rude ticketing agent told them they we not contracted to vacuum the plane. The ride to las Vegas was fine We had a connecting flight to Dallas. The flight was fine but when we arrived in Dallas everyone who flew on any frontier airlines the picked up bags from baggage claim D15 had to wait over a hour for their bags to start we arrived at 11:30pm ish to the gate we didn't leave the baggage clamed till 12:50 am very not happy and i used to fly frontier 4 times a week for work in Denver i will not be using them again

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

My flight was canceled I was promised a reginf still not received.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

Both legs of the flight were changed. The day of the flight and length of the trip.

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

Everything you need to know for your flight from Chicago to San Francisco

Information on your arrival and departure airports

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