$66 Find Cheap Flights from Illinois to San Francisco Bay Area

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Useful Info
Useful Info

Good to know

Low seasonFebruary
High seasonMay
Cheapest flight$66
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Chicago O'Hare Airport to San Jose

FAQs for booking flights from Illinois to San Francisco Bay Area

  • How does KAYAK find such low prices on flights from Illinois to San Francisco Bay Area?

    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 Bay Area.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to San Francisco Bay Area 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 Bay Area?

    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 from Illinois to San Francisco Bay Area with an airline and back 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 Bay Area?

    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 from Illinois to San Francisco Bay Area up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in San Francisco Bay Area?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in San Francisco Bay Area is Oakland Airport (OAK), with an average flight price of $198.

  • What is the cheapest day to fly to San Francisco Bay Area?

    Based on KAYAK data, the cheapest day to fly to San Francisco Bay Area is Thursday where round-trip tickets can be as cheap as $379. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $564 on average.

  • What is the cheapest time of day to fly to San Francisco Bay Area?

    The cheapest time of day to fly to San Francisco Bay Area is generally at night, when round-trip flights cost $401 on average. Morning departures are around 10% cheaper than evening flights, on average. The most expensive time of day to fly to San Francisco Bay Area is generally in the evening, which is peak travel time and where the average cost of a ticket is $475.

  • What is the cheapest flight to San Francisco Bay Area?

    The cheapest ticket to San Francisco Bay Area from Illinois found in the last 72 hours was to San Francisco, at $198 round-trip. The most popular route is Chicago Midway Airport (MDW) to San Francisco (SFO) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $198.

  • What is the cheapest month to fly from Illinois to San Francisco Bay Area?

    The cheapest month for flights from Illinois to San Francisco Bay Area is August, when tickets cost $289 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $506 and $487 respectively.

  • How far in advance should I book a flight from Illinois to San Francisco Bay Area?

    To get a below average price on the flight from Illinois to San Francisco Bay Area, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

  • How long is the flight to San Francisco Bay Area?

    An average nonstop flight from Illinois to San Francisco Bay Area takes 9h 37m, covering a distance of 1772 miles. The shortest route is St. Louis (STL) to San Francisco (SFO) with an average flight time of 4h 10m.

  • What are the most popular destinations in San Francisco Bay Area?

    Based on KAYAK flight searches, the most popular destination is San Francisco (68% of total searches to San Francisco Bay Area). The next most popular destinations are San Jose (16%) and Oakland (15%). Searches for flights to Santa Rosa (1%) are also popular.

Book cheap flights from Illinois to San Francisco Bay Area

Recent round-trip flight deals

5/29Thu
1 stopSpirit Airlines
15h 03mORD-SJC
6/1Sun
1 stopSpirit Airlines
10h 52mSJC-ORD
$112
5/28Wed
1 stopSpirit Airlines
13h 39mORD-SJC
6/1Sun
1 stopSpirit Airlines
10h 52mSJC-ORD
$121
5/10Sat
nonstopAlaska Airlines
4h 59mORD-SFO
5/17Sat
nonstopAlaska Airlines
4h 26mSFO-ORD
$179
6/24Tue
nonstopUnited Airlines
4h 50mORD-SFO
7/1Tue
nonstopUnited Airlines
4h 27mSFO-ORD
$188
5/21Wed
1 stopFrontier
18h 43mSTL-SFO
5/24Sat
1 stopFrontier
25h 07mSFO-STL
$188
5/10Sat
1 stopFrontier
21h 30mSTL-SFO
5/17Sat
1 stopFrontier
24h 07mSFO-STL
$191
5/10Sat
nonstop
4h 59mORD-SFO
5/14Wed
1 stop
9h 58mSFO-ORD
$194
5/30Fri
nonstopUnited Airlines
4h 39mORD-SFO
6/6Fri
nonstopUnited Airlines
4h 19mSFO-ORD
$198
5/28Wed
1 stopAlaska Airlines
7h 36mORD-OAK
5/31Sat
1 stopAlaska Airlines
9h 11mOAK-ORD
$206
5/10Sat
nonstop
4h 59mORD-SFO
5/12Mon
1 stop
14h 51mSFO-ORD
$209

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Recent one-way flight deals

6/2Mon
1 stopSpirit Airlines
15h 03mORD-SJC
$66
6/3Tue
1 stopSpirit Airlines
10h 24mORD-OAK
$66
5/30Fri
1 stop
14h 15mORD-SJC
$72
5/20Tue
1 stop
17h 37mORD-SFO
$88
5/29Thu
1 stopFrontier
8h 54mSTL-SFO
$89
5/30Fri
nonstopSouthwest
4h 30mMDW-SFO
$90
5/29Thu
nonstopHawaiian Airlines
4h 50mORD-SFO
$90
5/6Tue
nonstopHawaiian Airlines
4h 59mORD-SFO
$92
5/11Sun
1 stopFrontier
11h 49mSTL-SFO
$95
7/1Tue
1 stopSouthwest
6h 10mMDW-SFO
$99

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Last minute flights from Illinois to San Francisco Bay Area

Last minute flight, train and bus deals

5/2Fri
multi-stopFrontier
13h 53mSTL-SFO
5/4Sun
multi-stopFrontier
24h 07mSFO-STL
$181
5/2Fri
multi-stopFrontier
13h 53mSTL-SFO
5/20Tue
multi-stopFrontier
23h 45mSFO-STL
$184
5/5Mon
nonstopAlaska Airlines
4h 59mORD-SFO
5/7Wed
nonstopAlaska Airlines
4h 32mSFO-ORD
$257
5/5Mon
nonstopHawaiian Airlines
4h 59mORD-SFO
5/11Sun
nonstopHawaiian Airlines
4h 32mSFO-ORD
$262
5/4Sun
multi-stop
13h 30mORD-SFO
5/6Tue
nonstop
4h 32mSFO-ORD
$268
5/4Sun
multi-stop
13h 30mORD-SFO
5/6Tue
multi-stop
8h 01mSFO-ORD
$278
5/1Thu
nonstopAlaska Airlines
4h 59mORD-SFO
5/7Wed
nonstopAlaska Airlines
4h 32mSFO-ORD
$316
5/5Mon
multi-stopDelta
6h 39mSTL-SJC
5/7Wed
multi-stopDelta
7h 59mSJC-STL
$379
5/5Mon
multi-stopDelta
7h 42mORD-SFO
5/21Wed
multi-stopDelta
8h 14mSFO-ORD
$448
5/1Thu
multi-stopHawaiian Airlines
8h 29mORD-SFO
5/6Tue
multi-stopHawaiian Airlines
8h 01mSFO-ORD
$457

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Everything you need to know for your flight to San Francisco Bay Area

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to San Francisco Bay Areafrom $280
Business Class flights to San Francisco Bay Areafrom $177
Prem Econ Class flights to San Francisco Bay Areafrom $108
Economy Class flights to San Francisco Bay Areafrom $25

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