$261+ Cheap flights from Idaho Falls to Key West (IDA - EYW)
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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — EYW
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Find cheap flights from Idaho Falls to Key West 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 Idaho Falls to Key West
Cheapest
Best
Last-minute
One-way
Cheapest flights from Idaho Falls to Key WestExplore the most affordable flight options available from Idaho Falls to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from Idaho Falls to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:37 am -
2 stops10h 56m
Tue 10/272:34 pm -
1 stop9h 08m
Deal found 9/9![American Airlines logo]()
$448
This American Airlines deal was found by Cheapflights users on 9/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:50 pm -
2 stops21h 45m
Sat 10/248:03 pm -
2 stops19h 17m
Deal found 9/5![American Airlines logo]()
$677
Best flights from Idaho Falls to Key WestDiscover carefully curated flight deals from Idaho Falls to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Idaho Falls to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:37 am -
1 stop8h 17m
Tue 10/272:34 pm -
1 stop9h 08m
Deal found 9/9![American Airlines logo]()
$491
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 9/222:25 pm -
3 stops21h 04m
Sat 9/264:20 pm -
2 stops23h 04m
Deal found 9/7![United Airlines logo]()
$952
This American Airlines deal was found by Cheapflights users on 9/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:15 pm -
2 stops20h 42m
Sat 9/267:47 pm -
2 stops19h 50m
Deal found 9/7![American Airlines logo]()
$898
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/192:28 pm -
3 stops21h 01m
Sat 10/244:20 pm -
2 stops25h 18m
Deal found 9/6![United Airlines logo]()
$1,015
Last-minute flights from Idaho Falls to Key WestDiscover last-minute flight deals from Idaho Falls to Key West. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho Falls to Key West. Data last updated September 9, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:50 pm -
2 stops21h 45m
Sat 10/248:03 pm -
2 stops19h 17m
Deal found 9/5![American Airlines logo]()
$677
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:37 am -
2 stops10h 56m
Tue 10/272:34 pm -
1 stop9h 08m
Deal found 9/9![American Airlines logo]()
$448
One-way flights from Idaho Falls to Key WestSearch for one-way flight options from Idaho Falls to Key West. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from Idaho Falls to Key West. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/1610:49 pm -
2 stops33h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Thu 10/1510:02 am -
3 stops45h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Allegiant Air logo]()
$486
This Delta deal was found by Cheapflights users on 9/9. 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.
Sat 10/176:00 am -
2 stops26h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$597
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 10/156:56 pm -
2 stops20h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$639
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:39 pm -
1 stop25h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![American Airlines logo]()
$831
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sat 10/171:58 pm -
3 stops52h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$858
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:18 am -
1 stop8h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![American Airlines logo]()
$863
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:37 am -
1 stop8h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![American Airlines logo]()
$872
Find flight deals from Idaho Falls to Key West
Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Key West (EYW). 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 September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $448 (American Airlines) |
One-way from | $261 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho Falls to Key West 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 September 9, 2026.
Use the filters below to find and compare flights from Idaho Falls to Key West that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Fri 10/16
10:49 pm-10:19 am
3 stops33h 30m
Key West
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$293
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Tue 10/20
6:37 am-4:54 pm
1 stop8h 17m
Key West
Tue 10/27
2:34 pm-9:42 pm
1 stop9h 08m
$491
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Sat 10/17
6:00 am-10:47 am
2 stops26h 47m
Key West
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$597
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Thu 10/15
6:56 pm-5:15 pm
2 stops20h 19m
Key West
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$639
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Fri 10/16
1:39 pm-4:54 pm
1 stop25h 15m
Key West
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$831
Quickest round-trip
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Sat 10/17
6:18 am-4:54 pm
1 stop8h 36m
Key West
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$863
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Tue 9/22
12:15 pm-10:57 am
2 stops20h 42m
Key West
Sat 9/26
7:47 pm-1:37 pm
2 stops19h 50m
$898
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Tue 9/22
2:25 pm-1:29 pm
3 stops21h 04m
Key West
Sat 9/26
4:20 pm-1:24 pm
2 stops23h 04m
$952
Idaho FallsKey West
IDA Idaho Falls Fanning Field - EYW Key West
IDAEYW
Idaho Falls Fanning Field
Mon 10/19
2:28 pm-1:29 pm
3 stops21h 01m
Key West
Sat 10/24
4:20 pm-3:38 pm
2 stops25h 18m
$1,015
Sorted by cheapest first
Compare providers for flights from Idaho Falls to Key West
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 to Key West in September.
| 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 Idaho Falls-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Key West flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Idaho Falls-Key West 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 Idaho Falls-Key West 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 Idaho Falls to Key West
Have a flexible travel schedule? Discover the best time to fly to Key West from Idaho Falls with our price prediction graph.
IDA-EYW
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 Idaho Falls to Key West. 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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