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Idaho Falls

$54+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SEA
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
1 adult, Economy
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What to know about flights from Idaho Falls

Discover essential information about flights departing from Idaho Falls, including flight schedules, destinations, airlines operating at the Idaho Falls airport, and any specific guidelines or requirements for travelers. Please note that the information is based on the most recent updates available. Data last updated February 8, 2026.

Cheapest one-way flight

$127

Cheapest round-trip flight

$104

Cheapest airline

Allegiant Air

Most popular destination

Denver Intl (DEN)

Good round-trip deal

$144 or less

Good one-way deal

$73 or less
The cheapest one-way flight from Idaho Falls Fanning Field is currently to Seattle/Tacoma Intl.
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The cheapest round-trip flight from Idaho Falls Fanning Field is currently to Las Vegas Harry Reid Intl.
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On average, Allegiant Air currently has the cheapest one-way flight from Idaho Falls Fanning Field (avg. price of $182).
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Denver Intl (DEN) is currently the most popular flight destination from Idaho Falls Fanning Field (average round-trip price of $320).
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Price to beat on a round-trip flight from Idaho Falls Fanning Field.
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Price to beat on a one-way flight from Idaho Falls Fanning Field.
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Find flights from Idaho Falls

Cheapest flights from Idaho Falls
Explore the most affordable flight options available from Idaho Falls. Find the lowest fares based on data from user searches, with prices last updated on February 8, 2026.

This Mytrip deal was found by Cheapflights users on 2/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2310:31 pm
IDA
-
LAS
Nonstop1h 48m
Allegiant Air
Fri 2/2712:45 pm
LAS
-
IDA
Nonstop1h 45m
Allegiant Air
Deal found 2/8$94
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:43 pm
IDA
-
LAS
Nonstop1h 43m
Allegiant Air
Fri 6/51:22 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 2/7$136
This Booking.com deal was found by Cheapflights users on 2/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1310:13 pm
IDA
-
LAS
Nonstop1h 46m
Allegiant Air
Fri 4/1012:42 pm
LAS
-
IDA
Nonstop1h 45m
Allegiant Air
Deal found 2/6$140
This Alaska Airlines deal was found by Cheapflights users on 2/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/95:20 pm
IDA
-
SEA
Nonstop2h 01m
Alaska Airlines
Sat 3/218:04 pm
SEA
-
IDA
Nonstop1h 48m
Alaska Airlines
Deal found 2/5$157
This Gotogate deal was found by Cheapflights users on 2/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:30 pm
IDA
-
LAS
Nonstop1h 46m
Allegiant Air
Mon 3/912:45 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 2/7$158
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1210:56 pm
IDA
-
LAS
Nonstop1h 43m
Allegiant Air
Mon 6/151:22 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 2/6$159
This Mytrip deal was found by Cheapflights users on 2/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2010:31 pm
IDA
-
LAS
Nonstop1h 48m
Allegiant Air
Mon 2/2312:45 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 2/7$166
This Mytrip deal was found by Cheapflights users on 2/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/610:06 pm
IDA
-
LAS
Nonstop1h 41m
Allegiant Air
Mon 4/1312:42 pm
LAS
-
IDA
Nonstop1h 45m
Allegiant Air
Deal found 2/5$179
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/810:21 pm
IDA
-
LAS
Nonstop1h 41m
Allegiant Air
Mon 5/1112:42 pm
LAS
-
IDA
Nonstop1h 45m
Allegiant Air
Deal found 2/7$180
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1710:21 pm
IDA
-
LAS
Nonstop1h 41m
Allegiant Air
Mon 4/2012:42 pm
LAS
-
IDA
Nonstop1h 45m
Allegiant Air
Deal found 2/6$182
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Fri 3/135:30 pm
IDA
-
DEN
Nonstop1h 52m
United Airlines
Fri 3/208:10 am
DEN
-
IDA
Nonstop1h 46m
United Airlines
Deal found 2/7$189
This Kiwi.com deal was found by Cheapflights users on 2/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:59 pm
IDA
-
LAS
1 stop5h 47m
Multiple Airlines
Mon 4/612:27 pm
LAS
-
IDA
Nonstop1h 45m
Multiple Airlines
Deal found 2/5$193

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 February 8, 2026. In the last 7 days, Cheapflights users made a total of 2,558,603 searches

Fly to

Seattle

Route

Depart

Return

Price

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Fri 2/20

10:31 pm-11:19 pm

Nonstop1h 48m

Las Vegas Harry Reid Intl

Mon 2/23

12:45 pm-3:31 pm

Nonstop1h 46m

$166

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 3/13

5:30 pm-7:22 pm

Nonstop1h 52m

Denver Intl

Fri 3/20

8:10 am-9:56 am

Nonstop1h 46m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sun 5/24

7:00 am-8:53 am

Nonstop1h 53m

Denver Intl

Sun 5/31

11:45 am-1:24 pm

Nonstop1h 39m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 3/13

2:35 pm-4:25 pm

Nonstop1h 50m

Denver Intl

Sat 3/21

1:55 pm-3:40 pm

Nonstop1h 45m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Sat 5/23

2:31 pm-4:18 pm

Nonstop1h 47m

Denver Intl

Thu 5/28

11:45 am-1:24 pm

Nonstop1h 39m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Wed 3/25

5:30 pm-7:22 pm

Nonstop1h 52m

Denver Intl

Sun 3/29

11:44 am-1:24 pm

Nonstop1h 40m

$189

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 4/3

5:20 pm-7:10 pm

Nonstop1h 50m

Denver Intl

Sun 4/5

11:44 am-1:24 pm

Nonstop1h 40m

$189

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 2/23

10:31 pm-11:19 pm

Nonstop1h 48m

Las Vegas Harry Reid Intl

Fri 2/27

11:13 am-9:39 pm

1 stop9h 26m

$203

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 5/8

5:26 pm-7:21 pm

Nonstop1h 55m

Denver Intl

Mon 5/18

8:10 am-9:55 am

Nonstop1h 45m

$204

Idaho FallsDenver

IDA - DEN

IDADEN

Idaho Falls Fanning Field

Fri 2/27

5:33 pm-7:25 pm

Nonstop1h 52m

Denver Intl

Sun 3/1

8:00 am-9:48 am

Nonstop1h 48m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 60 results
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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 February
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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.

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

Use this chart to determine the optimal time to book a round-trip flight from Idaho Falls to Seattle. Price data was last updated on February 6, 2026.

To ensure you get the cheapest price possible for a flight from Idaho Falls, you should look to book at least 69 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.

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

Currently, October is the cheapest month in which you can book a flight from Idaho Falls (average of $116). Flying from Idaho Falls in September will prove the most costly (average of $206). 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: Alaska Airlines, Hawaiian Airlines, Delta. These airlines depart to the following popular destinations: Seattle.

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 (33 flights per day), Denver (30 flights per day), and Seattle (29 flights per day).

Denver Intl
Denver Intl
From $165
Salt Lake City
Salt Lake City
From $139
Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $165
Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $134

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

The cheapest city to fly to from Idaho Falls is Portland, with prices starting at $55. Explore other affordable destinations below.

Portland
Portland
From $55
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $79
Santa Ana J. Wayne/Orange Cnty
Santa Ana J. Wayne/Orange Cnty
From $81
Phoenix Sky Harbor Intl
Phoenix Sky Harbor Intl
From $134

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 February 8, 2026. In the last 7 days, Cheapflights users made a total of 2,558,603 searches.
Peruse reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian Airlines 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.
Alaska Airlines
8.0
Very good
11,851 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,851 reviews
Alaska Airlines
8.0
Very good
11,851 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,172 reviews
Alaska Airlines
8.0
Very good
11,851 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Hawaiian Airlines
7.8
Good
2,829 reviews
Alaska Airlines
8.0
Very good
11,851 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

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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 February 8, 2026.

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

    This month, the top selected destinations from Idaho Falls are Las Vegas, Santa Ana, Seattle. Throughout the year, Las Vegas, Seattle, Denver 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 $55 to Portland (prices may vary depending on the airline and departure time). On average, users have booked flights for $416 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 Hawaiian 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 Hawaiian Airlines flights from Idaho Falls to Spokane ($119).

  • 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 $1,026
    Fly from Idaho Falls Fanning Field to Salt Lake City starting at $1,444
    Fly from Idaho Falls Fanning Field to Denver starting at $2,957

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

    If you’re looking for a cheap first-class flight from Idaho Falls, consider Portland. Prices start at $478 so you can fly first-class even on a budget.

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

    October is currently the cheapest month to fly from Idaho Falls. At this moment in time September 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 Denver from $189 round trip
    Fly from Idaho Falls to Phoenix from $200 round trip
    Fly from Idaho Falls to Seattle from $237 round trip
    Fly from Idaho Falls to Dallas from $321 round trip
    Fly from Idaho Falls to Orlando from $359 round trip

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