HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho Falls

$43+ Cheap flights from Idaho Falls

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — DEN
Jul 29 — Aug 51
Wed 7/29
Wed 8/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find flights from Idaho Falls within your budget

 
Find flights departing from Idaho Falls that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on June 29, 2026. In the last 7 days, Cheapflights users made a total of 2,558,603 searches

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 9/19

3:57 pm-4:50 pm

Nonstop1h 53m

Portland

Wed 9/30

10:30 am-1:24 pm

Nonstop1h 54m

$217

Idaho FallsSan Diego

IDA - SAN

IDASAN

Idaho Falls Fanning Field

Sat 12/5

6:45 pm-11:47 pm

1 stop6h 02m

San Diego

Wed 12/9

6:15 am-12:27 pm

1 stop5h 12m

$251

Idaho FallsSan Diego

IDA - SAN

IDASAN

Idaho Falls Fanning Field

Tue 12/1

6:45 pm-11:47 pm

1 stop6h 02m

San Diego

Sat 12/5

6:15 am-12:27 pm

1 stop5h 12m

$251

Idaho FallsLos Angeles

IDA - LAX

IDALAX

Idaho Falls Fanning Field

Sat 8/8

7:00 pm-10:05 pm

1 stop4h 05m

Los Angeles Los Angeles

Wed 8/12

11:35 am-6:20 pm

1 stop5h 45m

$257

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 8/28

4:04 pm-5:58 pm

Nonstop1h 54m

Denver Intl

Sun 8/30

1:39 pm-3:23 pm

Nonstop1h 44m

$262

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 8/28

6:00 am-9:14 am

1 stop3h 14m

Denver Intl

Sun 8/30

7:05 am-10:50 am

1 stop3h 45m

$269

Idaho FallsLos Angeles

IDA - LAX

IDALAX

Idaho Falls Fanning Field

Sat 10/31

6:45 pm-9:56 pm

1 stop4h 11m

Los Angeles Los Angeles

Fri 11/6

5:05 pm-10:19 pm

1 stop4h 14m

$274

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Thu 7/16

6:00 am-9:12 am

1 stop3h 12m

Denver Intl

Mon 7/20

5:40 am-10:43 am

1 stop5h 03m

$284

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 7/18

6:00 am-9:12 am

1 stop3h 12m

Denver Intl

Sun 7/19

7:09 pm-10:32 pm

1 stop3h 23m

$284

Idaho FallsLos Angeles

IDA - LAX

IDALAX

Idaho Falls Fanning Field

Sat 8/15

11:35 am-4:46 pm

1 stop6h 11m

Los Angeles Los Angeles

Sat 8/22

5:35 am-10:50 am

1 stop4h 15m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Compare providers for flights from Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Idaho Falls in June
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: Among all the travel providers offering deals on flights from Idaho Falls, FlightHub has been found to have the most accurate pricing. Users can find the same prices on deals on Cheapflights as FlightHub about >95% of the time. This is based on searches for flights from Idaho Falls made on Cheapflights over the past month and is updated monthly.
  • Most trusted provider: In terms of trustworthiness, Cheapflights users rate FlightHub the highest out of those offering flight deals from Idaho Falls. FlightHub has a user feedback rating of 3 out of 3 stars (3 being the best) and has received the most positive sentiment from Cheapflights users searching for flights from Idaho Falls. This info is gathered from Cheapflights searches over the past month.

Best time to book a flight from Idaho Falls

Have a flexible travel schedule? Discover the best time to fly from Idaho Falls 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.

Travel insights for flights from Idaho Falls

Get recent, data-driven insights about flights from Idaho Falls including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Idaho Falls?

Currently, March is the cheapest month in which you can book a flight from Idaho Falls (average of $220). Flying from Idaho Falls in June will prove the most costly (average of $356). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Idaho Falls?

For flights departing from Idaho Falls check dates and pricing for the following: United Airlines, Allegiant Air. These airlines depart to the following popular destinations: Denver.

United Airlines
United Airlines
From $143
Delta
Delta
From $98
Allegiant Air
Allegiant Air
From $43
American Airlines
American Airlines
From $268

What are popular destinations to fly to from Idaho Falls?

Some of the most frequent flights departing from Idaho Falls everyday are: Salt Lake City (72 flights per day), Denver (39 flights per day), and Seattle (31 flights per day).

Denver Intl
Denver Intl
From $184
Salt Lake City
Salt Lake City
From $155
Portland
Portland
From $56
Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $164

What is the cheapest place to fly to from Idaho Falls?

The cheapest city to fly to from Idaho Falls is Las Vegas Harry Reid Intl, with prices starting at $45. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $45
Portland
Portland
From $56
Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $81
Santa Ana J. Wayne/Orange Cnty
Santa Ana J. Wayne/Orange Cnty
From $110

When is the best time to book a flight from Idaho Falls?

To ensure you get the cheapest price possible for a flight from Idaho Falls, you should look to book at least 24 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.

Airline reviews for flights from Idaho Falls

Read reviews and ratings of airlines operating flights from Idaho Falls. Gain insights into the quality of service, in-flight amenities, customer experiences, and overall satisfaction to choose the best airline for your Idaho Falls travel. Please note that the reviews are sourced from user searches and were last updated on June 29, 2026. In the last 7 days, Cheapflights users made a total of 2,558,603 searches.
Peruse reviews from past customers who have flown United Airlines and Allegiant Air from Idaho Falls to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,897 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
9,897 reviews
United Airlines
7.4
Good
9,897 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
Allegiant Air
7.3
Good
689 reviews
United Airlines
7.4
Good
9,897 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Related info for your journey

Access useful and relevant information related to your journey from Idaho Falls. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated June 29, 2026.

  • What are the most popular destinations to fly to from Idaho Falls?

    This month, the top selected destinations from Idaho Falls are Seattle, Portland, Las Vegas. Throughout the year, Las Vegas, Denver, Seattle are some of the top choices made by users flying from Idaho Falls.

  • What is the cheapest flight from Idaho Falls to anywhere?

    Users have flown out of Idaho Falls for as low as $45 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for $327 to fly from Idaho Falls.

  • What are the cheapest airlines flying from Idaho Falls to anywhere?

    Over the past few days, we've found that Allegiant Air, Delta, and Alaska Airlines have the cheapest prices from Idaho Falls. Allegiant Air flights from Idaho Falls to Phoenix-Mesa Gateway ($43), Delta flights from Idaho Falls to Albuquerque ($98), and Alaska Airlines flights from Idaho Falls to Anchorage ($120).

  • What is the cheapest premium economy flight from Idaho Falls?

    Options for some of the cheapest premium economy flights from Idaho Falls we have found on Cheapflights are as follows:
    Fly from Idaho Falls Fanning Field to Seattle starting at $582
    Fly from Idaho Falls Fanning Field to Salt Lake City starting at $1,458
    Fly from Idaho Falls Fanning Field to Dallas/Fort Worth Airport starting at $2,283
    Fly from Idaho Falls Fanning Field to Denver starting at $3,569

  • What is the cheapest first class flight from Idaho Falls?

    If you’re looking for a cheap first-class flight from Idaho Falls, consider Seattle. Prices start at $587 so you can fly first-class even on a budget.

  • What is the cheapest month to fly from Idaho Falls?

    March is currently the cheapest month to fly from Idaho Falls. At this moment in time June is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

  • Where are the cheapest places to fly to from Idaho Falls?

    Check out the cheapest flights from Idaho Falls to embark to:
    Fly from Idaho Falls to San Diego from $247 round trip
    Fly from Idaho Falls to Denver from $262 round trip
    Fly from Idaho Falls to Seattle from $271 round trip
    Fly from Idaho Falls to Boston from $394 round trip
    Fly from Idaho Falls to Ontario from $415 round trip

See more FAQs

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.