SFO

$88 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 4/13. 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

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

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Everything you should know

Cheapest round-trip
$201
Overall average: $398
Frontier
Thu 4/23Sun 4/26
STL - SFO • 1 stop
Cheapest non-stop
$244
Typical prices: $306-$482
American Airlines
Thu 3/19Tue 3/24
ORD - SFO • Non-stop
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We hope you love your trip to San Francisco!
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

Thu, Apr 23 - Sun, Apr 26
Frontier Logo
8:12 pm - 12:22 am
STL
-
SFO
6h 10m
1 stop
Frontier Logo
9:33 pm - 9:00 pm
SFO
-
STL
21h 27m
1 stop
$201Frontier
Mon, Mar 16 - Mon, Mar 23
Frontier Logo
8:12 pm - 8:09 pm
STL
-
SFO
25h 57m
1 stop
Frontier Logo
6:41 pm - 9:49 am
SFO
-
STL
37h 08m
2 stops
$203Frontier
Thu, Mar 5 - Tue, Mar 10
American Airlines Logo
7:00 am - 2:35 pm
ORD
-
SFO
9h 35m
1 stop
American Airlines Logo
6:00 am - 12:24 pm
SFO
-
ORD
4h 24mnonstop
$244American Airlines
Wed, Apr 8 - Sun, Apr 19
Southwest Logo
3:00 pm - 8:55 pm
MDW
-
SFO
7h 55m
1 stop
Southwest Logo
11:25 pm - 5:40 am
SFO
-
MDW
4h 15mnonstop
$245Southwest
Wed, May 27 - Fri, May 29
Multiple Airlines Logo
6:20 am - 7:10 pm
ORD
-
SFO
14h 50m
1 stop
Multiple Airlines Logo
4:00 pm - 5:50 am
SFO
-
ORD
11h 50m
1 stop
$245Multiple Airlines
Sat, May 30 - Mon, Jun 1
Multiple Airlines Logo
6:20 am - 7:10 pm
ORD
-
SFO
14h 50m
1 stop
Multiple Airlines Logo
4:00 pm - 5:50 am
SFO
-
ORD
11h 50m
1 stop
$246Multiple Airlines
Wed, May 13 - Sun, May 17
American Airlines Logo
6:55 am - 9:52 am
ORD
-
SFO
4h 57mnonstop
American Airlines Logo
5:30 am - 11:58 am
SFO
-
ORD
4h 28mnonstop
$247American Airlines
Wed, Apr 22 - Mon, Apr 27
Southwest Logo
12:35 pm - 5:30 pm
MDW
-
SFO
6h 55m
1 stop
Southwest Logo
5:15 am - 11:25 am
SFO
-
MDW
4h 10mnonstop
$247Southwest
Mon, May 11 - Thu, May 28
United Airlines Logo
7:13 pm - 1:35 am
CMI
-
SFO
8h 22m
1 stop
United Airlines Logo
10:38 pm - 8:54 am
SFO
-
CMI
8h 16m
1 stop
$298United Airlines
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
3:25 pm - 9:26 pm
MLI
-
SFO
8h 01m
1 stop
United Airlines Logo
11:52 pm - 9:58 am
SFO
-
MLI
8h 06m
1 stop
$309United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$88
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 1% 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
Rohnert Park
Marina
Emeryville
Capitola
Pacifica
Millbrae
Campbell
Mill Valley
Newark
Novato
Windsor
Union City
Richmond
Belmont
West Sacramento
Los Altos
American Canyon
Corte Madera
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)