SFO

$60 Find Cheap Flights from Illinois 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 to San Francisco departing on 1/28. 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, 0 bags

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Everything you should know

Cheapest round-trip
$131
Typical prices: $282-$441
Frontier
Wed 1/21Wed 1/28
STL - SFO • 1 stop
Cheapest non-stop
$238
Typical prices: $248-$507
American Airlines
Sat 2/14Sat 2/21
ORD - SFO • Non-stop
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Illinois to San Francisco

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois 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 Illinois to San Francisco

Wed, Jan 21 - Wed, Jan 28
Frontier Logo
3:46 pm - 11:41 pm
STL
-
SFO
9h 55m1 stop
Frontier Logo
7:00 am - 2:46 pm
SFO
-
STL
5h 46m1 stop
$131Frontier
Fri, Feb 20 - Wed, Feb 25
Frontier Logo
1:59 pm - 8:03 am
STL
-
SFO
20h 04m1 stop
Frontier Logo
7:15 pm - 9:26 pm
SFO
-
STL
24h 11m1 stop
$158Frontier
Fri, Jan 23 - Wed, Jan 28
Alaska Airlines Logo
8:00 am - 11:03 pm
ORD
-
SFO
17h 03m1 stop
Alaska Airlines Logo
11:41 am - 11:37 pm
SFO
-
ORD
9h 56m1 stop
$238Alaska Airlines
Thu, Jan 15 - Sat, Jan 17
Southwest Logo
8:15 am - 11:15 am
MDW
-
SFO
5h 00mnonstop
Southwest Logo
6:20 am - 4:30 pm
SFO
-
MDW
8h 10m1 stop
$240Southwest
Sat, Jan 17 - Mon, Jan 26
Delta Logo
5:20 pm - 10:15 pm
ORD
-
SFO
6h 55m1 stop
Delta Logo
2:35 pm - 11:53 pm
SFO
-
ORD
7h 18m1 stop
$240Delta
Fri, Mar 13 - Tue, Mar 17
Alaska Airlines Logo
5:29 pm - 10:37 am
ORD
-
SFO
19h 08m1 stop
Alaska Airlines Logo
11:34 am - 11:56 pm
SFO
-
ORD
10h 22m1 stop
$242Alaska Airlines
Sat, Feb 28 - Tue, Mar 3
Southwest Logo
8:15 am - 11:15 am
MDW
-
SFO
5h 00mnonstop
Southwest Logo
8:15 am - 4:35 pm
SFO
-
MDW
6h 20m1 stop
$243Southwest
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
7:50 pm - 12:24 am
ORD
-
SFO
6h 34m1 stop
Multiple Airlines Logo
2:30 pm - 11:50 pm
SFO
-
ORD
7h 20m1 stop
$243Multiple Airlines
Sat, Jan 10 - Wed, Jan 21
Multiple Airlines Logo
5:50 am - 1:31 pm
ORD
-
SFO
9h 41m1 stop
Multiple Airlines Logo
7:00 am - 10:38 pm
SFO
-
ORD
13h 38m2 stops
$244Multiple Airlines
Mon, Jan 12 - Sun, Jan 18
Delta Logo
1:49 pm - 8:35 pm
MDW
-
SFO
8h 46m1 stop
Delta Logo
5:45 am - 5:34 pm
SFO
-
MDW
9h 49m1 stop
$248Delta
Useful Info

Good to know

Low seasonSeptember
Cheapest flight$60
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from St. Louis to San Francisco

FAQs for booking flights from Illinois to San Francisco

  • How does KAYAK find such low prices on flights from Illinois 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 Illinois to San Francisco.

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

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

  • What is the Hacker Fare option on flights from Illinois 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 Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois 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 Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Calistoga
Marina
Rohnert Park
Emeryville
Capitola
Pacifica
Millbrae
Campbell
Mill Valley
Newark
Novato
Windsor
Union City
Belmont
Richmond
West Sacramento
Los Altos
Corte Madera
American Canyon
Jenner

Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco

San Francisco (SFO)