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Eureka

$284+ Cheap flights from Chicago (CHI) to Eureka, CA

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — ACV
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Chicago to Eureka

Keep the following information in mind while searching for Chicago to Eureka flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$284
(United Airlines)
Provider with most accurate pricing for Chicago (CHI)-Arcata Eureka flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Arcata Eureka flights.
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From Chicago (CHI) to Eureka
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Find flight deals from Chicago to Eureka

Cheapest flights from Chicago to Eureka
Explore the most affordable flight options available from Chicago to Eureka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/118:48 amORD - ACV
1 stop8h 30mUnited Airlines
Sat 11/152:15 pmACV - ORD
1 stop6h 55mUnited Airlines
Deal found 10/27$334
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:47 amORD - ACV
1 stop6h 43mUnited Airlines
Mon 11/172:15 pmACV - ORD
1 stop8h 44mUnited Airlines
Deal found 10/29$354
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:10 amORD - ACV
1 stop10h 06mUnited Airlines
Sat 12/612:30 pmACV - ORD
1 stop6h 38mUnited Airlines
Deal found 10/29$356
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/88:47 amORD - ACV
1 stop6h 43mUnited Airlines
Sat 11/156:45 pmACV - ORD
1 stop8h 15mUnited Airlines
Deal found 10/27$379
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:48 amORD - ACV
1 stop8h 30mUnited Airlines
Thu 11/208:20 amACV - ORD
2 stops19h 09mUnited Airlines
Deal found 10/29$865

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Eureka 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 October 29, 2025.
Use the filters below to find and compare flights from Chicago to Eureka that are best for you.

Fly from

Chicago

Fly to

Eureka

Route

Depart

Return

Price

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Fri 1/30

2:40 pm-10:28 pm

1 stop9h 48m

Arcata Eureka

Mon 2/2

4:00 pm-12:58 am

1 stop6h 58m

$284

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Tue 11/11

8:48 am-3:18 pm

1 stop8h 30m

Arcata Eureka

Sat 11/15

2:15 pm-11:10 pm

1 stop6h 55m

$334

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Thu 11/13

8:47 am-1:30 pm

1 stop6h 43m

Arcata Eureka

Mon 11/17

2:15 pm-12:59 am

1 stop8h 44m

$354

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Tue 12/2

7:10 am-3:16 pm

1 stop10h 06m

Arcata Eureka

Sat 12/6

12:30 pm-9:08 pm

1 stop6h 38m

$356

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Sat 11/8

8:47 am-1:30 pm

1 stop6h 43m

Arcata Eureka

Sat 11/15

6:45 pm-5:00 am

1 stop8h 15m

$379

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Sat 3/7

6:20 am-2:46 pm

1 stop10h 26m

Arcata Eureka

Wed 3/11

2:13 pm-12:59 am

1 stop8h 46m

$444

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Sat 3/7

6:20 am-2:46 pm

1 stop10h 26m

Arcata Eureka

Tue 3/10

3:50 pm-12:59 am

1 stop7h 09m

$444

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Mon 4/27

7:15 am-3:17 pm

1 stop10h 02m

Arcata Eureka

Sat 5/2

6:40 pm-5:25 am

1 stop8h 45m

$444

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Mon 4/27

7:15 am-3:17 pm

1 stop10h 02m

Arcata Eureka

Mon 5/4

4:00 pm-1:11 am

1 stop7h 11m

$444

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Tue 12/16

6:55 am-2:44 pm

1 stop9h 49m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Best time to book a flight from Chicago to Eureka

Have a flexible travel schedule? Discover the best time to fly to Eureka 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 Eureka

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

Currently, January is the cheapest month in which you can book a flight from Chicago to Eureka (average of $283). Flying from Chicago to Eureka in December is currently the most expensive (average of $962). 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 EU9?

Find hourly flight availability from Chicago to Eureka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 14% on flights from Chicago to Eureka by exploring options for tickets in the morning.

Reviews of airlines servicing Eureka

Get insights into the airlines that provide service to Eureka. 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 Eureka. Reviews last updated October 29, 2025.
Read through reviews of airlines operating flights from Chicago to Eureka, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,999 reviews

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
United Airlines
7.4
Good
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!

Related info for your journey

Find useful and relevant information for your journey from Chicago to Eureka. 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 Eureka?

    There are many flights that can get you from Chicago to Eureka in 9h 48m. Fly via United Airlines to get the fastest option. Chicago and Eureka are separated by a distance of 1860 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago to Eureka 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 Eureka?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Eureka (average of $283). Flying from Chicago to Eureka in December is currently the most expensive (average of $962). 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 Eureka

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Chicago to Eureka

Discover the top airline that operate flights from Chicago to Eureka. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$284Average$519FlexibilityNo cancel feeOn-time69%

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