$120 Cheap Flights from Eugene (EUG) to Idaho Falls (IDA)

View $120 flight on Tue, Oct 7, 2025Opens in a new window

Popular airlines from Mahlon Sweet Field Airport (EUG) to Idaho Falls Regional Airport (IDA)

Cheap Flights from Eugene to Idaho Falls (EUG-IDA)

Prices were available within the past 7 days and start at $120 for one-way flights and $240 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Oct 27 - Tue, Nov 11
EUG
Eugene
IDA
Idaho Falls
$240 Roundtrip, found 5 hours ago
$240
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Mon, Oct 27 from Eugene to Idaho Falls, returning Tue, Nov 11, priced at $240 found 5 hours ago
Hawaiian Airlines
Tue, Sep 16 - Tue, Sep 30
EUG
Eugene
IDA
Idaho Falls
$240 Roundtrip, found 5 hours ago
$240
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Tue, Sep 16 from Eugene to Idaho Falls, returning Tue, Sep 30, priced at $240 found 5 hours ago
Delta
Mon, Sep 1 - Tue, Sep 16
EUG
Eugene
IDA
Idaho Falls
$241 Roundtrip, found 5 hours ago
$241
Roundtrip
found 5 hours ago
Select Delta flight, departing Mon, Sep 1 from Eugene to Idaho Falls, returning Tue, Sep 16, priced at $241 found 5 hours ago
Alaska Airlines
Tue, Aug 26 - Wed, Aug 27
EUG
Eugene
IDA
Idaho Falls
$243 Roundtrip, found 6 days ago
$243
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Aug 26 from Eugene to Idaho Falls, returning Wed, Aug 27, priced at $243 found 6 days ago
United
Thu, Sep 4 - Mon, Sep 8
EUG
Eugene
IDA
Idaho Falls
$244 Roundtrip, found 20 hours ago
$244
Roundtrip
found 20 hours ago
Select United flight, departing Thu, Sep 4 from Eugene to Idaho Falls, returning Mon, Sep 8, priced at $244 found 20 hours ago
Delta
Mon, Sep 1 - Tue, Sep 9
EUG
Eugene
IDA
Idaho Falls
$246 Roundtrip, found 21 hours ago
$246
Roundtrip
found 21 hours ago
Select Delta flight, departing Mon, Sep 1 from Eugene to Idaho Falls, returning Tue, Sep 9, priced at $246 found 21 hours ago
Bargain Flight
Tue, Oct 7 - Sat, Oct 11
EUG
Eugene
IDA
Idaho Falls
$260 Roundtrip, found 17 hours ago
$260
Roundtrip
found 17 hours ago
Select Bargain Flight flight, departing Tue, Oct 7 from Eugene to Idaho Falls, returning Sat, Oct 11, priced at $260 found 17 hours ago
Bargain Flight
Mon, Oct 13 - Mon, Nov 17
EUG
Eugene
IDA
Idaho Falls
$261 Roundtrip, found 23 hours ago
$261
Roundtrip
found 23 hours ago
Select Bargain Flight flight, departing Mon, Oct 13 from Eugene to Idaho Falls, returning Mon, Nov 17, priced at $261 found 23 hours ago
Hawaiian Airlines
Mon, Oct 27 - Sat, Nov 15
EUG
Eugene
IDA
Idaho Falls
$261 Roundtrip, found 5 hours ago
$261
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Mon, Oct 27 from Eugene to Idaho Falls, returning Sat, Nov 15, priced at $261 found 5 hours ago
Alaska Airlines
Mon, Oct 27 - Fri, Nov 14
EUG
Eugene
IDA
Idaho Falls
$263 Roundtrip, found 5 hours ago
$263
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Mon, Oct 27 from Eugene to Idaho Falls, returning Fri, Nov 14, priced at $263 found 5 hours ago

Find the cheapest month to fly from Eugene (EUG) to Idaho Falls (IDA)

February is typically the cheapest month to fly

From $211 - $582 per traveler.

Graph displaying average flight prices per month

Alternative airports near Idaho Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Idaho Falls Regional IDA. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $360
IDA
Idaho Falls Regional
CheapestClosest
Average driving time to city center5 min
Flights from $360
Flights from Eugene (EUG) to Idaho Falls (IDA)
Origin airport
Eugene
Destination airport
Idaho Falls Regional
Airlines serving
Alaska Airlines, Delta, United
Roundtrip price
$240
Distance
556 mi

Eugene to Idaho Falls Flights

The cheapest times to fly from Eugene 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 Eugene to Idaho Falls are during the month of October. You can find some of the cheapest flights from Eugene to Idaho Falls with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Eugene 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 Eugene 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 Eugene to Idaho Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $120 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 Eugene 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 Eugene 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 Mahlon Sweet Field Airport (EUG) to Idaho Falls Regional Airport (IDA) cost?
Discover the latest flight deals from EUG 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 EUG to IDA?
The cheapest flights from EUG 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 EUG to IDA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from EUG to IDA. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Mahlon Sweet Field Airport (EUG) to Idaho Falls Regional Airport (IDA)?
Nonstop flights from Mahlon Sweet Field Airport (EUG) to Idaho Falls Regional Airport (IDA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from EUG to IDA?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mahlon Sweet Field Airport (EUG) to Idaho Falls Regional Airport (IDA)?
To avoid possible delays on the Mahlon Sweet Field Airport (EUG) to Idaho Falls Regional Airport (IDA) route, fly before 3 PM. Departures after this time are 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 Mahlon Sweet Field Airport (EUG) to Idaho Falls Regional Airport (IDA) last-minute?
Last-minute fares from EUG to IDA are usually more expensive. To lock in the lowest prices, start looking for flights early. That said, if you're flexible with your travel dates, it's possible to score a cheap fare right before you leave.
Is it cheaper to book an EUG to IDA flight and hotel package?
You'll generally save money by securing an EUG to IDA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your preferred accommodations and flights, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Mahlon Sweet Field Airport (EUG) to Idaho Falls Regional Airport (IDA)?
In most instances, you can modify or cancel your EUG to IDA flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further information, visit our Customer Service portal.

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*Available to One Key members.