$386+ Cheap flights from Great Falls to Idaho Falls (GTF - IDA)
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 12/22. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — IDA
Nov 25 — Dec 21
Round-trip
1 adult, Economy
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Find cheap flights from Great Falls to Idaho Falls with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Great Falls to Idaho Falls
Cheapest
Best
Last-minute
Cheapest flights from Great Falls to Idaho FallsExplore the most affordable flight options available from Great Falls to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
Explore the most affordable flight options available from Great Falls to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/226:19 pm -
1 stop4h 44m
Tue 12/295:40 am -
1 stop6h 59m
Deal found 10/24![Delta logo]()
$386
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 11/65:10 pm -
1 stop5h 44m
Tue 11/106:04 am -
1 stop10h 26m
Deal found 10/22![Alaska Airlines logo]()
$685
This Alaska Airlines deal was found by Cheapflights users on 10/24. 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.
Tue 12/225:12 pm -
2 stops44h 03m
Tue 12/291:52 pm -
1 stop26h 40m
Deal found 10/24![Alaska Airlines logo]()
$726
Best flights from Great Falls to Idaho FallsDiscover carefully curated flight deals from Great Falls to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
Discover carefully curated flight deals from Great Falls to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/226:19 pm -
1 stop4h 44m
Tue 12/295:40 am -
1 stop6h 59m
Deal found 10/24![Delta logo]()
$386
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 11/65:10 pm -
1 stop5h 44m
Tue 11/106:04 am -
1 stop10h 26m
Deal found 10/22![Alaska Airlines logo]()
$685
This Alaska Airlines deal was found by Cheapflights users on 10/24. 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.
Tue 12/225:12 pm -
2 stops44h 03m
Tue 12/291:52 pm -
1 stop26h 40m
Deal found 10/24![Alaska Airlines logo]()
$726
Last-minute flights from Great Falls to Idaho FallsDiscover last-minute flight deals from Great Falls to Idaho Falls. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to Idaho Falls. Data last updated October 26, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 11/65:10 pm -
1 stop5h 44m
Tue 11/106:04 am -
1 stop10h 26m
Deal found 10/22![Alaska Airlines logo]()
$685
Find flight deals from Great Falls to Idaho Falls
Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $386 (Delta) |
Cheapflights Fare Finder
Customize your flight search to find flights from Great Falls to Idaho Falls 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 7,457,451 searches. Data last updated October 26, 2026.
Use the filters below to find and compare flights from Great Falls to Idaho Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Great FallsIdaho Falls
GTF Great Falls - IDA Idaho Falls Fanning Field
GTFIDA
Great Falls
Tue 12/22
6:19 pm-11:03 pm
1 stop4h 44m
Idaho Falls Fanning Field
Tue 12/29
5:40 am-12:39 pm
1 stop6h 59m
$386
Great FallsIdaho Falls
GTF Great Falls - IDA Idaho Falls Fanning Field
GTFIDA
Great Falls
Fri 11/6
5:10 pm-10:54 pm
1 stop5h 44m
Idaho Falls Fanning Field
Tue 11/10
6:04 am-4:30 pm
1 stop10h 26m
$685
Great FallsIdaho Falls
GTF Great Falls - IDA Idaho Falls Fanning Field
GTFIDA
Great Falls
Tue 12/22
5:12 pm-1:15 pm
2 stops44h 03m
Idaho Falls Fanning Field
Tue 12/29
1:52 pm-4:32 pm
1 stop26h 40m
$726
Sorted by cheapest first
Compare providers for flights from Great Falls to 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 Great Falls to Idaho Falls in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Great Falls-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Great Falls-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-Idaho Falls flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Great Falls-Idaho Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Great Falls-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Great Falls to Idaho Falls
Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Great Falls with our price prediction graph.
GTF-IDA
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.
Related info for your journey
Find useful and relevant information for your journey from Great Falls to Idaho Falls. 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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