$500+ Cheap flights from O'Hare Intl (ORD) 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ACV
Aug 3 — Aug 101
1 adult, Economy
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Keep the following information in mind while searching for O'Hare Intl to Eureka flight deals. Data was last updated July 29, 2025.
Round-trip from | $500 (United Airlines) |
|---|---|
Popular in | July |
Cheapest in | January |
Average price | $984 |
Find flight deals from O'Hare Intl to Eureka
Cheapest flights from O'Hare Intl to EurekaExplore the most affordable flight options available from O'Hare Intl to Eureka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.
Explore the most affordable flight options available from O'Hare Intl to Eureka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/94:30 pmORD - ACV
1 stop7h 44mUnited Airlines
Sun 9/146:40 pmACV - ORD
1 stop9h 44mUnited Airlines
Deal found 7/28![United Airlines logo]()
$500
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare Intl 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 July 29, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Eureka that are best for you.
Fly from
O'Hare Intl
Fly to
Eureka
Route
Depart
Return
Price
ChicagoArcata
ORD - ACV
ORDACV
Chicago O'Hare Intl
Tue 9/9
4:30 pm-10:14 pm
1 stop7h 44m
Arcata Eureka
Sun 9/14
6:40 pm-6:24 am
1 stop9h 44m
$500
Best time to book a flight from O'Hare Intl to Eureka
Have a flexible travel schedule? Discover the best time to fly to Eureka from O'Hare Intl 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 O'Hare Intl Airport to Eureka
What is the cheapest time of day to fly from ORD to EU9?
Find hourly flight availability from O'Hare Intl 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 July 29, 2025.
When flying from Chicago O'Hare Intl Airport to Eureka, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 July 29, 2025.
See what other customers who have flown with United Airlines from Chicago O'Hare Intl Airport to Eureka have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.6
Comfort
7.3
Overall
7.4
Crew
8.1
Boarding
7.7
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentRuth,Dec 2024
ORD - AMS
Food
6.6
Comfort
7.3
Overall
7.4
Crew
8.1
Boarding
7.7
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentRuth,Dec 2024
ORD - AMS
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl to Eureka. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for O'Hare Intl to Eureka
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from O'Hare Intl to Eureka
Discover the top airline that operate flights from O'Hare Intl 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 July 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$284 | Average$483 | FlexibilityNo cancel fee | On-time69% |