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Cheap flights from Portland to Idaho Falls from $106

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Idaho Falls departing on 12/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Portland to Idaho Falls

Cheap round-trip flights

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Allegiant Air Logo
12:01 pm - 2:36 pmPDX-IDA
1h 35mnonstop
Allegiant Air Logo
3:26 pm - 4:11 pmIDA-PDX
1h 45mnonstop
$106Allegiant Air
Find Deal
Fri, Dec 12 - Mon, Dec 15
Allegiant Air Logo
12:01 pm - 2:36 pmPDX-IDA
1h 35mnonstop
Allegiant Air Logo
3:26 pm - 4:11 pmIDA-PDX
1h 45mnonstop
$119Allegiant Air
Find Deal
Fri, Dec 12 - Mon, Dec 15
Allegiant Air Logo
1:54 pm - 4:32 pmPDX-IDA
1h 38mnonstop
Allegiant Air Logo
5:22 pm - 6:07 pmIDA-PDX
1h 45mnonstop
$144Allegiant Air
Find Deal
Fri, Nov 21 - Mon, Nov 24
Multiple Airlines Logo
5:49 pm - 11:59 pmPDX-IDA
5h 10m1 stop
Multiple Airlines Logo
3:26 pm - 4:11 pmIDA-PDX
1h 45mnonstop
$202Multiple Airlines
Find Deal
Wed, Dec 10 - Mon, Dec 15
Multiple Airlines Logo
5:49 pm - 11:59 pmPDX-IDA
5h 10m1 stop
Multiple Airlines Logo
3:26 pm - 4:11 pmIDA-PDX
1h 45mnonstop
$209Multiple Airlines
Find Deal
Wed, Dec 10 - Fri, Dec 12
Alaska Airlines Logo
5:49 pm - 4:27 pmPDX-IDA
21h 38m1 stop
Alaska Airlines Logo
5:07 pm - 1:50 pmIDA-PDX
21h 43m1 stop
$234Alaska Airlines
Find Deal
Fri, Dec 12 - Mon, Dec 15
Delta Logo
2:23 pm - 10:21 pmPDX-IDA
6h 58m2 stops
Delta Logo
6:00 am - 3:33 pmIDA-PDX
10h 33m2 stops
$236Delta
Find Deal
Fri, Dec 12 - Sat, Dec 13
Delta Logo
2:23 pm - 10:21 pmPDX-IDA
6h 58m2 stops
Delta Logo
7:06 pm - 3:33 pmIDA-PDX
21h 27m2 stops
$246Delta
Find Deal
Fri, Dec 12 - Sun, Dec 14
Hawaiian Airlines Logo
10:40 am - 4:27 pmPDX-IDA
4h 47m1 stop
Hawaiian Airlines Logo
5:07 pm - 9:20 pmIDA-PDX
5h 13m1 stop
$259Hawaiian Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Alaska Airlines Logo
1:38 pm - 6:18 pmPDX-IDA
3h 40m1 stop
Alaska Airlines Logo
9:00 am - 10:46 pmIDA-PDX
14h 46m1 stop
$262Alaska Airlines
Find Deal
Wed, Jan 14 - Sat, Jan 17

Alaska Airlines flights from Portland to Idaho Falls

Our best Alaska Airlines deals on Portland to Idaho Falls flight tickets
Alaska Airlines
Dec 12
PDX5:49 pmPortland
21h 38m
1 stop
IDA4:27 pmIdaho Falls Fanning Field
Dec 15
IDA5:07 pmIdaho Falls Fanning Field
21h 43m
1 stop
PDX1:50 pmPortland
$234
Find similar
Alaska Airlines
Jan 14
PDX1:38 pmPortland
3h 40m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
Jan 17
IDA9:00 amIdaho Falls Fanning Field
14h 46m
1 stop
PDX10:46 pmPortland
$262
Find similar
Alaska Airlines
Dec 12
PDX5:49 pmPortland
5h 10m
1 stop
IDA11:59 pmIdaho Falls Fanning Field
Dec 15
IDA6:05 amIdaho Falls Fanning Field
4h 27m
1 stop
PDX9:32 amPortland
$265
Find similar

Delta flights from Portland to Idaho Falls

Our best Delta deals on Portland to Idaho Falls flight tickets
Delta
Dec 12
PDX2:23 pmPortland
6h 58m
2 stops
IDA10:21 pmIdaho Falls Fanning Field
Dec 13
IDA6:00 amIdaho Falls Fanning Field
10h 33m
2 stops
PDX3:33 pmPortland
$236
Find similar
Delta
Dec 12
PDX2:23 pmPortland
6h 58m
2 stops
IDA10:21 pmIdaho Falls Fanning Field
Dec 14
IDA7:06 pmIdaho Falls Fanning Field
21h 27m
2 stops
PDX3:33 pmPortland
$246
Find similar
Delta
Dec 12
PDX5:05 pmPortland
4h 16m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
Dec 13
IDA6:00 amIdaho Falls Fanning Field
17h 37m
2 stops
PDX10:37 pmPortland
$251
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 29, 2025.
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

Price

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/12

12:01 pm-2:36 pm

Nonstop1h 35m

Idaho Falls Fanning Field

Mon 12/15

3:26 pm-4:11 pm

Nonstop1h 45m

$106

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/12

12:01 pm-2:36 pm

Nonstop1h 35m

Idaho Falls Fanning Field

Mon 12/15

3:26 pm-4:11 pm

Nonstop1h 45m

$119

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 11/21

1:54 pm-4:32 pm

Nonstop1h 38m

Idaho Falls Fanning Field

Mon 11/24

5:22 pm-6:07 pm

Nonstop1h 45m

$144

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 12/10

5:49 pm-11:59 pm

1 stop5h 10m

Idaho Falls Fanning Field

Mon 12/15

3:26 pm-4:11 pm

Nonstop1h 45m

$202

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 12/10

5:49 pm-11:59 pm

1 stop5h 10m

Idaho Falls Fanning Field

Fri 12/12

3:26 pm-4:11 pm

Nonstop1h 45m

$209

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/12

5:49 pm-4:27 pm

1 stop21h 38m

Idaho Falls Fanning Field

Mon 12/15

5:07 pm-1:50 pm

1 stop21h 43m

$234

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/12

2:23 pm-10:21 pm

2 stops6h 58m

Idaho Falls Fanning Field

Sat 12/13

6:00 am-3:33 pm

2 stops10h 33m

$236

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/12

2:23 pm-10:21 pm

2 stops6h 58m

Idaho Falls Fanning Field

Sun 12/14

7:06 pm-3:33 pm

2 stops21h 27m

$246

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/5

10:40 am-4:27 pm

1 stop4h 47m

Idaho Falls Fanning Field

Mon 12/8

5:07 pm-9:20 pm

1 stop5h 13m

$259

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 1/14

1:38 pm-6:18 pm

1 stop3h 40m

Idaho Falls Fanning Field

Sat 1/17

9:00 am-10:46 pm

1 stop14h 46m

$262

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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Portland to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of June, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $128.

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Saturday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $94. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Wednesday is $174.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is at noon. Flights from Portland to Idaho Falls during this time can be as low as $90. Try not to purchase tickets in the evening because they tend to be around $413. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Portland to Idaho Falls Fanning Field flight route?

Fly from Portland to Idaho Falls Fanning Field for the best Portland - Idaho Falls Fanning Field flight prices

What cabin class options are available on Portland to Idaho Falls Fanning Field flights?

There is only 1 cabin class available to choose from on Portland to Idaho Falls Fanning Field flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland to Idaho Falls flights?

No. A direct flight is the cheapest option for a flight between Portland to Idaho Falls.

How have Portland to Idaho Falls flight prices changed over time?

As of October 2025, prices for Portland to Idaho Falls flights are approximately 224% more expensive when compared to flights at the same time last year.

When to book flights from Portland to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Idaho Falls (PDX to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Idaho Falls

Fastest flight time

1h 35m

Direct flights

Tue and Sat

Airports in Idaho Falls

1 airport
The fastest flight from Portland to Idaho Falls takes 1h 35m
Direct flights go from Portland to Idaho Falls on Tuesday and Saturday. There are no airlines offering direct flights.
There is 1 airport near Idaho Falls: Idaho Falls Fanning Field (IDA)
Search flight deals

  • How far is Portland to Idaho Falls Fanning Field by plane?

    Idaho Falls Fanning Field is 542.6 mi away from Portland. Typically, this will take 1h 35m by plane in normal conditions.

  • When did momondo last update prices for flights from Portland Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from Portland Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from Portland Airport to Idaho Falls Fanning Field Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Portland to Idaho Falls?

  • What is the most popular airline from Portland to Idaho Falls?

Best airlines flying from Portland to Idaho Falls

Compare and see reviews for airlines that fly from Portland to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $56Free CancellationRating
7.2
695 reviews
Search Allegiant Air flights
DeltaPriceFrom $171Free CancellationRating
7.9
7,993 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $184Free CancellationRating
7.8
2,796 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $256Free CancellationRating
8.0
11,210 reviews
Search Alaska Airlines flights

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Idaho Falls?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho Falls from Portland.

Can I find flights from Portland to Idaho Falls with flexible booking policies on momondo?

All flight searches from Portland to Idaho Falls on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Idaho Falls?

momondo provides multiple filters to help you find the best flight to Idaho Falls from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to Idaho Falls right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho Falls from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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