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Fremont

$129+ Cheap flights from Chicago (CHI) to Fremont, CA

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SFO
Apr 29 — May 61
Wed 4/29
Wed 5/6
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Fremont are usually found in May or July, booked 83 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from Chicago to Fremont

Cheapest flights from Chicago to Fremont
Explore the most affordable flight options available from Chicago to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 30, 2026.

This Delta deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:27 am
MDW
-
SFO
1 stop7h 28m
Delta
Wed 4/2210:55 pm
SFO
-
MDW
1 stop7h 52m
Delta
Deal found 3/26$237
This Kiwi.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:03 pm
ORD
-
SFO
2 stops18h 20m
Multiple Airlines
Wed 4/227:40 pm
SFO
-
ORD
1 stop8h 28m
Multiple Airlines
Deal found 3/30$237
This Trip.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:00 am
MDW
-
SFO
1 stop13h 34m
Frontier
Mon 5/410:38 pm
SFO
-
MDW
1 stop10h 34m
Frontier
Deal found 3/28$238
This Kiwi.com deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/184:10 pm
ORD
-
SFO
1 stop8h 42m
Multiple Airlines
Sat 4/257:15 am
SFO
-
ORD
1 stop9h 48m
Multiple Airlines
Deal found 3/27$238
This Cheapflightsfares deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/189:07 pm
ORD
-
SFO
1 stop25h 53m
Frontier
Sat 6/208:30 pm
SFO
-
ORD
1 stop7h 49m
Frontier
Deal found 3/26$239
This Frontier deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:00 am
MDW
-
SFO
1 stop15h 14m
Frontier
Mon 6/110:15 pm
SFO
-
MDW
1 stop10h 57m
Frontier
Deal found 3/26$240
This Frontier deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:55 am
ORD
-
SFO
1 stop14h 39m
Frontier
Fri 7/1011:52 pm
SFO
-
ORD
1 stop14h 18m
Frontier
Deal found 3/27$240
This CheapOair deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:07 pm
MDW
-
SFO
1 stop9h 57m
Frontier
Sat 8/2211:52 pm
SFO
-
MDW
1 stop12h 15m
Frontier
Deal found 3/27$241
This Frontier deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:58 pm
ORD
-
SFO
1 stop13h 25m
Frontier
Sat 4/256:29 pm
SFO
-
ORD
1 stop9h 51m
Frontier
Deal found 3/27$241
This Kiwi.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:28 pm
ORD
-
SFO
2 stops17h 30m
Frontier
Fri 5/111:16 pm
SFO
-
ORD
1 stop7h 47m
Frontier
Deal found 3/26$242
This Southwest deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/512:50 pm
MDW
-
SFO
2 stops10h 35m
Southwest
Tue 5/126:20 am
SFO
-
MDW
2 stops8h 15m
Southwest
Deal found 3/26$243
This Kiwi.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:28 am
ORD
-
SFO
2 stops23h 45m
Multiple Airlines
Mon 4/2010:38 pm
SFO
-
ORD
1 stop9h 02m
Multiple Airlines
Deal found 3/30$243

Find flight deals from Chicago to Fremont

Keep the following information in mind while searching for Chicago to Fremont flight deals. Data was last updated March 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$235
(Frontier)

One-way from

$129
(Super.com)

Popular in

February

Cheapest in

May

Average price

$397
Provider with most accurate pricing for Chicago (CHI)-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-San Francisco flights.
Search Deals
From Chicago (CHI) to Fremont
Search Deals
One-way flight from Chicago (CHI) to Fremont
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Fremont that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 30, 2026.
Use the filters below to find and compare flights from Chicago to Fremont that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Thu 4/30

5:30 am-12:35 pm

2 stops9h 05m

San Francisco

Tue 5/5

2:50 pm-11:20 pm

1 stop6h 30m

$261

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Mon 4/27

4:10 pm-10:10 pm

2 stops8h 00m

San Francisco

Mon 5/4

9:15 pm-7:35 am

1 stop8h 20m

$290

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Mon 4/27

6:15 pm-11:05 pm

1 stop6h 50m

San Francisco

Mon 5/4

1:25 pm-11:55 pm

2 stops8h 30m

$290

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Wed 5/6

4:00 pm-11:15 pm

2 stops9h 15m

San Francisco

Sat 5/9

5:40 am-5:15 pm

2 stops9h 35m

$295

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Sat 5/9

7:50 am-3:25 pm

2 stops9h 35m

San Francisco

Tue 5/19

6:20 am-4:35 pm

2 stops8h 15m

$295

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Fri 5/29

3:05 pm-10:10 pm

2 stops9h 05m

San Francisco

Tue 6/2

6:20 am-4:35 pm

2 stops8h 15m

$297
Quickest round-trip

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Mon 4/20

9:45 pm-12:20 am

Nonstop4h 35m

San Francisco

Mon 4/27

11:25 pm-5:40 am

Nonstop4h 15m

$300

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Thu 5/14

9:45 pm-12:20 am

Nonstop4h 35m

San Francisco

Wed 5/20

2:50 pm-11:20 pm

1 stop6h 30m

$307

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Fri 5/1

6:20 am-9:11 am

Nonstop4h 51m

San Francisco

Sat 5/2

11:56 pm-6:20 am

Nonstop4h 24m

$309

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 5/26

6:10 am-8:47 am

Nonstop4h 37m

San Francisco

Sat 5/30

5:05 am-11:31 am

Nonstop4h 26m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/29

Showing 1-10 of 46 resultsSorted by cheapest first
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Best time to book a flight from Chicago to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Chicago to Fremont?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Fremont. Price data was last updated on March 13, 2026.

To ensure you get the cheapest price possible for a flight from Chicago to Fremont, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago to Fremont?

Currently, October is the cheapest month in which you can book a flight from Chicago to Fremont (average of $80). Flying from Chicago to Fremont in February is currently the most expensive (average of $217). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to FR8?

Find hourly flight availability from Chicago to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 30, 2026.

It’s typically best to fly out from Chicago to Fremont in the evening. Doing so could potentially save you 15% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Chicago to Fremont?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Fremont. Price data was last updated on March 28, 2026.

Travelers seeking maximum savings on their Chicago to Fremont flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Fremont

Explore weekly flight availability from Chicago to Fremont. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 30, 2026.

The most flights from CHI to FR8 are scheduled on a Monday (84 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (46 on average).

How much does it cost to fly round-trip from Chicago to Fremont?

Reviews of airlines servicing Fremont

Get insights into the airlines that provide service to Fremont. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Fremont. Reviews last updated March 30, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andUnited Airlines from Chicago to Fremont have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,329 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Alaska Airlines
7.9
Good
12,139 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,520 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,533 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,009 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Fremont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to Fremont?

    There are many flights that can get you from Chicago to Fremont in 4h 51m. Fly via Southwest or United Airlines to get the fastest option. There are 1841 mi between Chicago and Fremont. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Chicago to Fremont one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $73. Users have also found prices from $85 and $90 on Frontier and Alaska Airlines, respectively.

  • What are the most reliable airlines from Chicago to Fremont?

    The top 3 most reliable airlines when flying from Chicago to Fremont are ANA (88%), Air China (83%) and Air New Zealand (78%).

  • What are the cheapest flights from Chicago to Fremont?

    The cheapest flight price from Chicago to Fremont is $145. On average you can expect to pay $1,041. The most popular route, (Chicago O'Hare Intl - San Francisco), can usually be booked for $170.

  • Can I find deals for flights from Chicago to Fremont that include hotel bookings?

    Yes. In addition to deals on Chicago to Fremont flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Fremont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Fremont.

  • Can I find deals for business class flights from Chicago to Fremont?

    Yes. Cheapflights offers flight deals from Chicago to Fremont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Fremont?

    Currently, October is the cheapest month in which you can book a flight from Chicago to Fremont (average of $80). Flying from Chicago to Fremont in February is currently the most expensive (average of $217). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Chicago to Fremont

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Chicago to Fremont

Discover the top 9 airlines that operate flights from Chicago to Fremont. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$83Average$212FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$108Average$217FlexibilityNo cancel feeOn-time85%
FrontierCheapest$120Average$235FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$374FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$138Average$423FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$159Average$304FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$186Average$304FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$197Average$431FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$208Average$434FlexibilityNo cancel feeOn-time69%

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