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Find cheap flights from San Francisco to Illinois from $65

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Illinois departing on 5/22. 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
0 bags
Tue 5/28
Tue 6/4

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Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicagononstop$108
Moline
Moline1 stop$277
Peoria
Peoria2 stops$419
Bloomington
Bloomington1 stop$340
Champaign
Champaign1 stop$378
Springfield
Springfield1 stop$412
Decatur
Decatur1 stop$373
St. Louis
St. Louis1 stop$124

Good to know

Low season

January

High season

June

Cheapest flight

$65
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 33% increase in price.
Flight from San Francisco to St. Louis

FAQs - booking Illinois flights

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

    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 San Francisco to Illinois.

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

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

    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 Illinois with an airline and back to San Francisco with another airline.

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

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

See more FAQs

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from San Francisco to the following destinations at these prices or less: Chicago $194 one-way - $376 round-trip
  • Morning departure is around 20% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from San Francisco to Illinois

 
Need help choosing which airline to fly with from San Francisco to Illinois? 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.
8.3
EVA AirOverall score based on 1556 reviews
8.4boarding
8.6crew
8.0entertainment
7.9food
8.2comfort
Airline reviews

The type of the food requested (Asian vegetarian) was not properly met with. They have very limited snack items that may compensate for the main meals.

8.0 ExcellentAnonymous, Apr 2024TPE - JFK
Read more about EVA Air reviews

The type of the food requested (Asian vegetarian) was not properly met with. They have very limited snack items that may compensate for the main meals.

The quality of the food is pretty good. Thank you, EVA Air.

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Pleasant crew. Very long flight, a bit uncomfortable at times being seated, but not too bad.

No ice for the drinks. Only gave a half a cup of your beverage. Not enough water. I got very dehydrated.

Overall the flight was what might be expected for a long haul flight to Asia in economy class. The cabin crew was attentive and the food was good. Boarding was fairly fast and easy. The one thing I found frustrating was the EVA app. It is terrible. Trying to do anything on it was almost impossible.

EVA would not help with ticket issue since they were purchased through a travel agency. Even though it was EVA ticket stock. Travel agency Budget Air didn't reissue ticket after airline change which I didn’t learn until trying to checkin on Christmas Day and there was no contact number for the agency to help. I will never use Budget Air to purchase flight again and disappointed in EVA’s refusal to help. Thankfully just under 12 hrs before departure someone from the agency was available to reissue tickets. I was starting to think we would not be flying and the stress trying to resolve was completely unacceptable.

seamless check in/ friendly staff, food is good, always love flying Eva Air

Eva is one of the top airlines in Asia... but often are over priced. Finally found a reasonable rate.

My original flight was rescheduled & EVA did a good job rescheduling my flight & connecting flight.

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

Decent flight, staff was very good, especially with the turbulence during the flight due to weather. Comfort was about par with other airlines but since it was a quick flight, was not much of an issue for us.

The plane was uncomfortable. I paid extra for more legroom but the seat was still uncomfortable. Other seats on the same exact row didn’t have to pay extra but still have extra legroom. I didn’t understand why I needed to pay $170 for. It was Iike China airline just wants to make money off their passengers. It was unfair.

They were helpful, considerate with asking us for standby preboarding with our infant, gave us toys and excellent service onboard. They were always on time, even early boarding once! All our luggage arrived intact, and they even brought our baby car seat to oversized for us. We love China Airlines!

Staff is friendly, great variety of entertainment, check in a little messy but due to people not listening. Overall a pleasant experience. Would use again in the future.

Ask flight attendant for water during flight and she was a little rude get the water.

Baggage made it successfully to destination despite short layover. Appreciate that.

Staff were good and nice. There should me 3 meals instead of only 2 and snacks.

Excellent staff made the boarding process fast and easy. Friendly crews on both flights from Saigon to Taipei and Taipei to Los Angeles. Will fly China Airlines again.

For a long-haul flight, the crew did a very good job of keeping the lavatories clean and the aisles clear.

Very comfortable Prem economy seats for a long haul flight. Had a problem with the tv that the crew fixed so was great!

Cathay Pacific seems to be an airline in trouble and on its way out. Lots of broken or poorly functioning things like entertainment screens, seats, and enough well trained staff to handle a full flight. Sad...

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Excellent. Planes are a little older and could get some refurbishment, but besides that everything was excellent.

While I was in great pain, the seat was sufficiently comfortable to allow me to rest and not be in so much pain.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

Seats were very comfortable. Crew were excellent. Food very good.

Flight crew was especially thoughtful and attentive, made sure our seats were comfortable so we could rest on the long flight

I felt thirsty and asked the flight attendent for water, but no one came for more than half an hour.

Everything went smooth. All flights were on time No changing gates, . No changing flights . It was like a completely different airlines tha n the last time I used Cathay Pacific . The last flight, 2 months ago, I had before this one was from Philippines also . I got changed in Manila and was told it only added 2 hours onto my flight . My 20 hour return trip ended up being 30 hours return with a 10.0 hour layover in New York with no seats anywhere . Everyone was sleeping or sitting on the floor . Unlike the hotel I was given in Manila to wait for this flight home . I never thought I would use Cathay Pacific again . But I did and this time you were great! I should have complained about the flight and layover from Hell a couple months ago. Consider that I am complaining about that august/23 flight now . Thank you got the great flying experience on my way home from philippines .

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Packed in like sardines, very uncomfortable. Sitting the aisle my shoulder was rammed into numerous times by rushing flight attendants. Also flight was very cold.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Very uncomfortable seats and seat backs, and I am only 5’9”. Delayed due to crew issues, spent a long time with no ventilation. Teeny overhead bins. Wifi worked well. Arrived safely.

I was delighted that we were able to get on the 4:40 pm flight rather than our original booking at 6:55 pm!! Other than that, the flight was comfortable and landed early😊

Our flight was delayed many times throughout the day. The final delay was about 8 hours. I spent time in line to speak to someone at their understaffed desk, and also spent time waiting online and then chatting with a service rep. None of the United employees were any help at all. I desperately wanted to go get rest and possibly re-book my trip but I was denied any compensation or voucher for a hotel. I was repeatedly told it was not United's fault and therefore they had no compensation to offer. Overall, a cold and callous experience.

Paid WiFi was only available for a few minutes. Avoid at all costs.

Everything was great, only problem was that flights were delayed

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

The flight got canceled due to mechanical issues, and he to be rebooked and missed my appointments for that day

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Book cheap flights from San Francisco to Illinois

Recent round-trip flight deals

9/4Wed
nonstopFrontier
4h 11mSFO-MDW
10/2Wed
nonstopFrontier
4h 38mMDW-SFO
$108
8/14Wed
nonstopFrontier
4h 11mSFO-MDW
8/24Sat
nonstopFrontier
4h 38mMDW-SFO
$110
5/26Sun
nonstopAlaska Airlines
4h 23mSFO-ORD
5/29Wed
1 stopAlaska Airlines
8h 41mORD-SFO
$170
6/5Wed
nonstopAlaska Airlines
4h 23mSFO-ORD
7/3Wed
nonstopAlaska Airlines
4h 40mORD-SFO
$179
5/11Sat
nonstopUnited Airlines
4h 21mSFO-ORD
5/18Sat
nonstopUnited Airlines
4h 46mORD-SFO
$205
5/11Sat
1 stopUnited Airlines
6h 26mSFO-ORD
5/18Sat
nonstopUnited Airlines
4h 46mORD-SFO
$214
9/13Fri
1 stopAmerican Airlines
8h 05mSFO-STL
9/17Tue
1 stopAmerican Airlines
5h 55mSTL-SFO
$226
6/1Sat
nonstopAmerican Airlines
4h 22mSFO-ORD
6/8Sat
1 stopAmerican Airlines
9h 13mORD-SFO
$227
5/25Sat
1 stopDelta
8h 44mSFO-ORD
5/31Fri
1 stopDelta
8h 51mORD-SFO
$236
8/2Fri
1 stopDelta
8h 55mSFO-MDW
8/10Sat
1 stopDelta
8h 33mMDW-SFO
$257

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Recent one-way flight deals

5/22Wed
1 stopFrontier
28h 04mSFO-STL
$65
5/21Tue
1 stopFrontier
6h 37mSFO-STL
$71
5/18Sat
nonstopAlaska Airlines
4h 23mSFO-ORD
$87
5/26Sun
nonstopAlaska Airlines
4h 23mSFO-ORD
$90
9/21Sat
1 stopAmerican Airlines
7h 14mSFO-STL
$99
6/4Tue
nonstopUnited Airlines
4h 20mSFO-ORD
$102
5/14Tue
nonstopUnited Airlines
4h 17mSFO-ORD
$103
5/28Tue
nonstopAmerican Airlines
4h 22mSFO-ORD
$109
5/10Fri
1 stopDelta
8h 22mSFO-MDW
$118
9/18Wed
1 stopDelta
6h 57mSFO-ORD
$118

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Last minute flights from San Francisco to Illinois

Last minute flight, train and bus deals

5/1Wed
multi-stopFrontier
15h 17mSFO-MDW
5/8Wed
nonstopFrontier
4h 39mMDW-SFO
$181
4/29Mon
multi-stopFrontier
10h 37mSFO-MDW
5/17Fri
multi-stopFrontier
29h 31mMDW-SFO
$195
5/3Fri
multi-stopAmerican Airlines
6h 51mSFO-STL
5/7Tue
multi-stopAmerican Airlines
9h 43mSTL-SFO
$256
4/29Mon
multi-stopDelta
8h 06mSFO-STL
5/1Wed
multi-stopDelta
8h 29mSTL-SFO
$258
5/3Fri
multi-stopDelta
8h 40mSFO-ORD
5/29Wed
multi-stopDelta
7h 41mORD-SFO
$266
5/3Fri
nonstopUnited Airlines
4h 21mSFO-ORD
5/7Tue
multi-stopUnited Airlines
6h 14mORD-SFO
$286
5/3Fri
nonstopUnited Airlines
4h 21mSFO-ORD
5/29Wed
multi-stopUnited Airlines
6h 35mORD-SFO
$340
4/30Tue
nonstopAlaska Airlines
4h 30mSFO-ORD
5/14Tue
multi-stopAlaska Airlines
7h 29mORD-SFO
$357
4/30Tue
nonstopAmerican Airlines
4h 17mSFO-ORD
5/21Tue
multi-stopAmerican Airlines
9h 50mORD-SFO
$364
4/30Tue
nonstopAlaska Airlines
4h 30mSFO-ORD
5/4Sat
nonstopAlaska Airlines
4h 46mORD-SFO
$384

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San Francisco - Illinois Flights