$126 Find Cheap Flights from Chicago to Fremont

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 Fremont departing on 1/14. 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
$237
Overall average: $408
Southwest
Sat 1/17Sat 1/24
MDW - SFO • Non-stop
Cheapest one-way
$126
Typical prices: $148-$281
Frontier
Wed 1/14
MDW - SFO • 2 stops
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Chicago to Fremont (CHI-SFO)

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

Sat, Jan 17 - Sat, Jan 24
Southwest Logo
8:15 am - 11:15 am
MDW
-
SFO
5h 00mnonstop
Southwest Logo
10:25 am - 4:20 pm
SFO
-
MDW
3h 55mnonstop
$237Southwest
Fri, Jan 9 - Sat, Jan 10
Frontier Logo
3:05 pm - 12:24 am
MDW
-
SFO
11h 19m1 stop
Frontier Logo
11:20 pm - 11:31 am
SFO
-
MDW
10h 11m1 stop
$238Frontier
Thu, Jan 15 - Sun, Jan 18
Frontier Logo
10:41 pm - 5:05 pm
ORD
-
SFO
20h 24m1 stop
Frontier Logo
11:12 pm - 12:08 pm
SFO
-
ORD
10h 56m1 stop
$238Frontier
Thu, Jan 15 - Wed, Jan 21
Multiple Airlines Logo
2:30 pm - 8:47 pm
ORD
-
SFO
8h 17m1 stop
Multiple Airlines Logo
11:41 am - 11:37 pm
SFO
-
ORD
9h 56m1 stop
$239Multiple Airlines
Wed, Jan 14 - Tue, Jan 20
Frontier Logo
5:57 pm - 1:24 pm
ORD
-
SFO
21h 27m1 stop
Frontier Logo
7:00 am - 6:27 pm
SFO
-
ORD
33h 27m2 stops
$240Frontier
Sat, Jan 17 - Tue, Jan 20
American Airlines Logo
1:35 pm - 10:50 pm
ORD
-
SFO
11h 15m1 stop
American Airlines Logo
6:00 am - 12:25 pm
SFO
-
ORD
4h 25mnonstop
$241American Airlines
Thu, Jan 15 - Mon, Jan 26
Multiple Airlines Logo
2:30 pm - 8:47 pm
ORD
-
SFO
8h 17m1 stop
Multiple Airlines Logo
2:30 pm - 11:50 pm
SFO
-
ORD
7h 20m1 stop
$243Multiple Airlines
Sat, Jan 17 - Sat, Jan 24
Alaska Airlines Logo
3:44 pm - 10:47 pm
ORD
-
SFO
9h 03m1 stop
Alaska Airlines Logo
6:18 pm - 1:10 pm
SFO
-
ORD
16h 52m2 stops
$245Alaska Airlines
Thu, Jan 22 - Wed, Jan 28
Alaska Airlines Logo
3:35 pm - 9:58 pm
ORD
-
SFO
8h 23m1 stop
Alaska Airlines Logo
11:41 am - 11:37 pm
SFO
-
ORD
9h 56m1 stop
$246Alaska Airlines
Fri, Jan 9 - Sat, Jan 10
Delta Logo
1:28 pm - 6:38 pm
MDW
-
SFO
7h 10m1 stop
Delta Logo
6:10 am - 4:16 pm
SFO
-
MDW
8h 06m1 stop
$248Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$126
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Chicago Midway Airport to San Francisco

When to book flights from Chicago to Fremont

Are your dates flexible? Find out the best times to travel from Chicago to Fremont based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Chicago to Fremont

  • Which airports will I be using when flying from Chicago to Fremont?

    When flying out of Chicago you’ll be using one of these airports: Chicago Midway or Chicago O'Hare Intl. Fremont does not have its own airport so you’ll be flying into nearby San Francisco airport, which is 21.9 mi away.

  • How long does a flight from Chicago to Fremont take?

    Direct flights cover the 1,855 miles separating Chicago and Fremont in about 4h 40m.

  • How many flights are there between Chicago and Fremont?

    82 direct flights run between Chicago and Fremont on a daily basis. On average, there are about 579 departures each week.

  • What’s the cheapest day of the week to fly between Chicago and Fremont?

    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 Fridays and the most expensive ones on Saturdays.

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

    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 Fremont.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Fremont from Chicago 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 Chicago to Fremont?

    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 Fremont 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 Fremont?

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

  • Which airlines provide the cheapest flights from Chicago to Fremont?

    In the last 72 hours, the cheapest one-way ticket between Chicago and Fremont found on KAYAK was with Frontier for $71. Frontier offered a round-trip connection from $81 and Hawaiian Airlines from $108.

Top tips for finding cheap flights from Chicago to Fremont

  • There is no airport in Fremont. Instead, you’ll be flying into San Francisco Airport when flying between Chicago and Fremont.
  • The cheapest flight from Chicago to Fremont was found 83 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is July.

Reviews of the top 5 airlines serving Chicago to Fremont

 
Need help choosing which airline to fly with from Chicago to Fremont? 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.
8.0
Alaska AirlinesOverall score based on 11431 reviews
8.5Crew
7.1Food
7.0Entertainment
8.1Boarding
7.8Comfort
Airline reviews

The flight was delayed so we didn’t get into San Diego until almost 1 AM. Otherwise, it was lovely.

8.0 ExcellentAnonymous, Dec 2025
ORD - SAN
Read more Alaska Airlines reviews

The flight was delayed so we didn’t get into San Diego until almost 1 AM. Otherwise, it was lovely.

1. Denial of Basic Needs (SEA): Upon arrival in Seattle, the wheelchair attendant refused my urgent request to use the restroom, insisting on scanning documents first. She eventually took me to a restroom but then abandoned me and my autistic son at an unstaffed, deserted gate for over four hours. When I called the accommodation line for help, I was told to "get someone's attention," which was impossible. My son, traumatized by the prospect of me yelling for help, was forced to wander the terminal to find assistance. 2. Revocation of Accommodations & Threats: At the gate, an agent stated I had no accommodations on file, despite my previous leg having them. When I showed the app (where my bulkhead seat was erased and replaced with Row 14), he denied the evidence. When I attempted to advocate for my immobilized leg, he threatened to "yank me from the flight" if I said one more word. He coerced me into agreeing that I was "asking for accommodations for the first time" before he would allow assistance, effectively forcing me to falsify the situation under duress. I complied only out of fear of being stranded in a strange city. 3. On-Board Negligence and Injury: Because my bulkhead seat was revoked, I was forced into Row 14. With my leg immobilized and unable to bend, it extended into the aisle. During boarding and the flight: 16 different passengers tripped over my injured leg. 6 rolled luggage bags were pulled over my injured leg. The Flight Attendant (FA) was one of the people who tripped and drove luggage over me. I reported the issue to the FA after 10 trips and 3 luggage impacts. He ignored me. He only addressed me later to ask me to move my immobilized leg for beverage service. I informed him again: "16 people have tripped, 6 luggage runovers, I cannot bend it." He provided no medical aid and no incident report. 4. Resolution and Trauma: Eventually, a different employee noticed my distress and my original paper boarding pass showing the correct bulkhead assignment. He asked me to move up. I broke down in tears, terrified that moving would cause the gate agent to remove me from the plane as threatened. We were eventually moved to the bulkhead, but the damage was done. My autistic son was traumatized by watching his mother be trampled and threatened. 5. Post-Flight: I called to report these injuries, but was disconnected after a 45-minute hold. I require a formal record of this injury and these violations.

The food selections were not good, and entertainment was non existent.

I always like flying with Alaska, great service and leg room

They changed our flight from a one stop 3 hour layover to a non-stop. Saved us hours and got us there sooner.

First Class seats had no more legroom then Premium Economy. There was no working WiFi or entertainment. I would have rather paid $400 more and flown on United for the 6 hours from EWR to SFO.

The ground crew did not supply drink or snacks during the layover in SFO. So there weren't many options. Otherwise, it was all great.

We flew economy, it was what I expected. The seats are too upright for me

I know airlines have to save money, but a little more legroom would be nice. I’m a small person and I just felt cramped after a few hours. However, I loved everything else! Free Alaska Airlines wifi, free movies, yummy snacks, and the crew was so helpful and accommodating!

I love the flight ✈️ Hawaiian Airlines. All stuffs are fantastic members ♡ sweet hearts and families warm welcome 🙏 I have milage of Hawaiian Airlines members so get points .also I booked kayak agent got cheap price ! I satisfied flight with Hawaiian Airlines ♡ thank you

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Better and more food and drinks. Put msnbc and free speech tv on the news channel selection list.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

It would have been better if the crew has supported my husband's reasons for needing to keep the space clear around his feet, rather than insisting that he put his knapsack in that space.

We loved the steward on the plane. He made the night enjoyable

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Not clean and was told I would get a great seat and it was not great at all

Flight got delayed for 5 hours no good explanation was offered ;(

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Better than expected. Staff were friendly and nice on both flights.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Everything you need to know for your flight from Chicago to Fremont

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