$295 Cheap Flights from Eureka (ACV) to Idaho Falls (IDA)

View $295 flight on Tue, Oct 7, 2025Opens in a new window

Popular airlines from Eureka, CA (ACV-Arcata - Eureka) to Idaho Falls Regional Airport (IDA)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Eureka to Idaho Falls (ACV-IDA)

Prices were available within the past 7 days and start at $295 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Eureka (ACV) to Idaho Falls (IDA)
Origin airport
Arcata - Eureka
Destination airport
Idaho Falls Regional
Distance
639 mi

Eureka to Idaho Falls Flights

The cheapest times to fly from Eureka to Idaho Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Eureka to Idaho Falls are during the month of . You can find some of the cheapest flights from Eureka to Idaho Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Eureka to Idaho Falls

Sunday is one of the best days to book for cheap flights from Eureka to Idaho Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Eureka to Idaho Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Eureka to Idaho Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $295 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Eureka to Idaho Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Eureka to Idaho Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Arcata - Eureka Airport (ACV) to Idaho Falls Regional Airport (IDA) cost?
Discover the latest flight deals from ACV to IDA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ACV to IDA?
The cheapest flights from ACV to IDA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ACV to IDA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ACV to IDA. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Arcata - Eureka Airport (ACV) to Idaho Falls Regional Airport (IDA)?
You'll have to take a flight with a layover when traveling from Arcata - Eureka Airport (ACV) to Idaho Falls Regional Airport (IDA). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from ACV to IDA?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on various factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Arcata - Eureka Airport (ACV) to Idaho Falls Regional Airport (IDA)?
Opt for a flight from Arcata - Eureka Airport (ACV) to Idaho Falls Regional Airport (IDA) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Arcata - Eureka Airport (ACV) to Idaho Falls Regional Airport (IDA) last-minute?
Booking your plane ticket from ACV to IDA right before your journey is generally more expensive. But if there's some wiggle room with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an ACV to IDA flight and hotel package?
Compared with arranging hotels and flights separately, booking an ACV to IDA flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place takes the hassle out of travel planning. Just pick your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Arcata - Eureka Airport (ACV) to Idaho Falls Regional Airport (IDA)?
In most instances, you're able to cancel or reschedule your ACV to IDA flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like further information, go to our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.