$139+ Cheap flights from Portland to Idaho Falls (PDX - 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from Portland 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 Portland to Idaho Falls
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Best
Last-minute
One-way
Cheapest flights from Portland to Idaho FallsExplore the most affordable flight options available from Portland to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from Portland to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:31 am -
Nonstop1h 45m
Wed 11/113:55 pm -
Nonstop1h 53m
Deal found 9/7![Alaska Airlines logo]()
$237
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:30 am -
Nonstop1h 51m
Wed 11/43:55 pm -
Nonstop1h 53m
Deal found 9/7![Alaska Airlines logo]()
$247
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:30 am -
Nonstop1h 51m
Fri 11/63:55 pm -
Nonstop1h 53m
Deal found 9/9![Alaska Airlines logo]()
$257
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:15 pm -
1 stop3h 55m
Wed 11/116:00 am -
1 stop3h 58m
Deal found 9/7![Delta logo]()
$267
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.
Fri 10/165:15 pm -
1 stop3h 55m
Mon 10/196:00 am -
1 stop7h 03m
Deal found 9/9![Delta logo]()
$287
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:31 am -
Nonstop1h 45m
Fri 11/133:55 pm -
Nonstop1h 53m
Deal found 9/8![Alaska Airlines logo]()
$308
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1611:50 am -
Nonstop1h 37m
Tue 1/53:58 pm -
Nonstop1h 52m
Deal found 9/7![Alaska Airlines logo]()
$317
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:09 am -
1 stop13h 50m
Wed 10/143:57 pm -
Nonstop1h 52m
Deal found 9/7![Alaska Airlines logo]()
$330
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.
Fri 10/305:15 pm -
1 stop3h 55m
Fri 11/66:00 am -
1 stop3h 50m
Deal found 9/9![Delta logo]()
$338
Best flights from Portland to Idaho FallsDiscover carefully curated flight deals from Portland to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Portland to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:18 am -
2 stops14h 41m
Wed 11/43:55 pm -
Nonstop1h 53m
Deal found 9/7![Alaska Airlines logo]()
$342
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.
Fri 10/165:15 pm -
1 stop3h 55m
Mon 10/191:05 pm -
2 stops9h 51m
Deal found 9/9![Delta logo]()
$343
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:30 am -
Nonstop1h 51m
Fri 10/231:58 pm -
2 stops20h 33m
Deal found 9/9![Alaska Airlines logo]()
$352
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/810:30 am -
Nonstop1h 51m
Thu 10/153:57 pm -
Nonstop1h 52m
Deal found 9/10![Alaska Airlines logo]()
$397
Last-minute flights from Portland to Idaho FallsDiscover last-minute flight deals from Portland to Idaho Falls. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Idaho Falls. Data last updated September 11, 2026 and is based on user searches.
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:09 am -
1 stop13h 50m
Wed 10/143:57 pm -
Nonstop1h 52m
Deal found 9/7![Alaska Airlines logo]()
$330
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:30 am -
Nonstop1h 51m
Thu 10/151:58 pm -
1 stop19h 30m
Deal found 9/7![Alaska Airlines logo]()
$375
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.
Fri 10/165:15 pm -
1 stop3h 55m
Mon 10/196:00 am -
1 stop7h 03m
Deal found 9/9![Delta logo]()
$287
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:31 am -
1 stop4h 49m
Mon 10/193:57 pm -
Nonstop1h 52m
Deal found 9/9![Alaska Airlines logo]()
$367
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:30 am -
Nonstop1h 51m
Fri 10/231:58 pm -
2 stops20h 33m
Deal found 9/9![Alaska Airlines logo]()
$352
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:30 am -
Nonstop1h 51m
Wed 11/43:55 pm -
Nonstop1h 53m
Deal found 9/7![Alaska Airlines logo]()
$247
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:30 am -
Nonstop1h 51m
Fri 11/63:55 pm -
Nonstop1h 53m
Deal found 9/9![Alaska Airlines logo]()
$257
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.
Fri 10/305:15 pm -
1 stop3h 55m
Fri 11/66:00 am -
1 stop3h 50m
Deal found 9/9![Delta logo]()
$338
One-way flights from Portland to Idaho FallsSearch for one-way flight options from Portland to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Portland to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 10/278:09 am -
1 stop6h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Alaska Airlines logo]()
$139
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:15 pm -
1 stop3h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$144
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:30 am -
Nonstop1h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Alaska Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 9/11. 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 10/275:30 am -
2 stops5h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Delta logo]()
$180
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 10/111:02 am -
2 stops27h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$200
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:06 am -
2 stops25h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$223
This Priceline deal was found by Cheapflights users on 9/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:30 am -
Nonstop1h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Alaska Airlines logo]()
$229
Find flight deals from Portland to Idaho Falls
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $237 (Booking.com) |
One-way from | $139 (Alaska Airlines) |
Popular in | January |
Cheapest in | July |
Average price | $422 |
Good round-trip deal | $321 or less |
Good one-way deal | $323 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland 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 September 11, 2026.
Use the filters below to find and compare flights from Portland to Idaho Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Tue 10/27
8:09 am-3:20 pm
1 stop6h 11m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Thu 10/22
5:15 pm-10:10 pm
1 stop3h 55m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$144
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Tue 10/27
5:15 pm-10:10 pm
1 stop3h 55m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$144
Quickest round-trip
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Thu 10/22
10:30 am-1:21 pm
Nonstop1h 51m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$159
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Thu 10/1
11:02 am-4:00 pm
2 stops27h 58m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$201
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Thu 10/22
11:06 am-1:34 pm
2 stops25h 28m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$223
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Thu 10/1
10:30 am-1:24 pm
Nonstop1h 54m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$229
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Fri 10/2
5:40 am-12:15 pm
1 stop5h 35m
Idaho Falls Fanning Field
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$239
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Thu 10/29
7:18 am-10:59 pm
2 stops14h 41m
Idaho Falls Fanning Field
Wed 11/4
3:55 pm-4:48 pm
Nonstop1h 53m
$342
PortlandIdaho Falls
PDX Portland - IDA Idaho Falls Fanning Field
PDXIDA
Portland
Fri 10/16
5:15 pm-10:10 pm
1 stop3h 55m
Idaho Falls Fanning Field
Mon 10/19
1:05 pm-9:56 pm
2 stops9h 51m
$343
Showing 1-10 of 12 resultsSorted by cheapest first
Compare providers for flights from Portland 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 Portland to Idaho Falls in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Idaho Falls flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-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 Portland-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 Portland to Idaho Falls
Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Portland with our price prediction graph.
PDX-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.
Cheapflights Insights
Everything you need to know about your flight from Portland to Idaho Falls
Prices
Airlines
What is the cheapest month to book a flight from Portland to Idaho Falls?
Currently, July is the cheapest month in which you can book a flight from Portland to Idaho Falls (average of $107). Flying from Portland to Idaho Falls in January is currently the most expensive (average of $496). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PDX to IDA?
Find hourly flight availability from Portland to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to Idaho Falls as you normally would.
Reviews of airlines servicing Idaho Falls
Get insights into the airlines that provide service to Idaho Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho Falls. Reviews last updated September 11, 2026.
Read through reviews of airlines operating flights from Portland to Idaho Falls, such as Alaska Airlines,Delta, andAllegiant Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Related info for your journey
Find useful and relevant information for your journey from Portland to Idaho Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Idaho Falls?
Book flights to Idaho Falls if you plan to visit one of these locationsRexburg
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Other flights to Idaho Falls
Explore flights to Idaho Falls departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
Portland and Idaho Falls flights
Browse other Portland and Idaho Falls flight options. Last updated on September 11, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Portland to Idaho Falls
Discover the top 3 airlines that operate flights from Portland to Idaho Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$68 | Average$114 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$168 | Average$476 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$193 | Average$422 | FlexibilityNo cancel fee | On-time75% |