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Cheap flights from Portland to Idaho Falls from $198

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 3/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
3:52 pm - 11:36 pm
PDX
-
IDA
6h 44m
1 stop
Alaska Airlines Logo
5:20 pm - 10:41 pm
IDA
-
PDX
6h 21m
1 stop
$198Alaska Airlines
Tue, Mar 10 - Wed, Mar 11
Delta Logo
5:00 pm - 10:21 pm
PDX
-
IDA
4h 21m
1 stop
Delta Logo
6:35 pm - 11:53 pm
IDA
-
PDX
6h 18m
1 stop
$223Delta
Tue, Feb 24 - Tue, Mar 3
Alaska Airlines Logo
1:36 pm - 11:36 pm
PDX
-
IDA
9h 00m
1 stop
Alaska Airlines Logo
8:00 am - 10:46 am
IDA
-
PDX
3h 46m
1 stop
$229Alaska Airlines
Mon, Mar 9 - Thu, Mar 12
Alaska Airlines Logo
3:52 pm - 11:36 pm
PDX
-
IDA
6h 44m
1 stop
Alaska Airlines Logo
5:20 pm - 1:38 pm
IDA
-
PDX
21h 18m
2 stops
$260Alaska Airlines
Tue, Mar 10 - Wed, Mar 11
Alaska Airlines Logo
9:55 pm - 4:43 pm
PDX
-
IDA
17h 48m
2 stops
Alaska Airlines Logo
8:00 am - 10:46 am
IDA
-
PDX
3h 46m
1 stop
$261Alaska Airlines
Mon, Mar 9 - Thu, Mar 12
Alaska Airlines Logo
8:30 am - 4:43 pm
PDX
-
IDA
7h 13m
1 stop
Alaska Airlines Logo
8:00 am - 10:46 am
IDA
-
PDX
3h 46m
1 stop
$264Alaska Airlines
Thu, Feb 26 - Sat, Feb 28
Alaska Airlines Logo
8:30 am - 4:43 pm
PDX
-
IDA
7h 13m
1 stop
Alaska Airlines Logo
5:20 pm - 6:11 am
IDA
-
PDX
13h 51m
2 stops
$267Alaska Airlines
Tue, Feb 24 - Tue, Mar 3
Alaska Airlines Logo
8:30 am - 4:43 pm
PDX
-
IDA
7h 13m
1 stop
Alaska Airlines Logo
5:20 pm - 10:41 pm
IDA
-
PDX
6h 21m
1 stop
$277Alaska Airlines
Wed, Mar 4 - Wed, Mar 11
Alaska Airlines Logo
7:05 am - 11:36 pm
PDX
-
IDA
15h 31m
2 stops
Alaska Airlines Logo
5:20 pm - 10:41 pm
IDA
-
PDX
6h 21m
1 stop
$285Alaska Airlines
Wed, Mar 4 - Wed, Mar 11
Alaska Airlines Logo
3:52 pm - 11:36 pm
PDX
-
IDA
6h 44m
1 stop
Alaska Airlines Logo
5:20 pm - 1:38 pm
IDA
-
PDX
21h 18m
2 stops
$291Alaska Airlines
Tue, Mar 10 - Wed, Mar 11

Alaska Airlines flights from Portland to Idaho Falls

Our best Alaska Airlines deals on Portland to Idaho Falls flight tickets
Alaska Airlines
Mar 10
PDX3:52 pmPortland
6h 44m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
Mar 11
IDA5:20 pmIdaho Falls Fanning Field
6h 21m
1 stop
PDX10:41 pmPortland
$198
Alaska Airlines
Mar 9
PDX1:36 pmPortland
9h 00m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
Mar 12
IDA8:00 amIdaho Falls Fanning Field
3h 46m
1 stop
PDX10:46 amPortland
$229
Alaska Airlines
Mar 10
PDX3:52 pmPortland
6h 44m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
Mar 11
IDA5:20 pmIdaho Falls Fanning Field
21h 18m
2 stops
PDX1:38 pmPortland
$260

Delta flights from Portland to Idaho Falls

Our best Delta deals on Portland to Idaho Falls flight tickets
Delta
Feb 24
PDX5:00 pmPortland
4h 21m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
Mar 3
IDA6:35 pmIdaho Falls Fanning Field
6h 18m
1 stop
PDX11:53 pmPortland
$223
Delta
Feb 24
PDX1:27 pmPortland
7h 54m
2 stops
IDA10:21 pmIdaho Falls Fanning Field
Mar 3
IDA6:35 pmIdaho Falls Fanning Field
6h 18m
1 stop
PDX11:53 pmPortland
$305
Delta
Feb 10
PDX5:08 pmPortland
4h 49m
1 stop
IDA10:57 pmIdaho Falls Fanning Field
Feb 18
IDA6:35 pmIdaho Falls Fanning Field
6h 18m
1 stop
PDX11:53 pmPortland
$317

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 January 28, 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

Price

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 3/10

3:52 pm-11:36 pm

1 stop6h 44m

Idaho Falls Fanning Field

Wed 3/11

5:20 pm-10:41 pm

1 stop6h 21m

$198

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 2/24

5:00 pm-10:21 pm

1 stop4h 21m

Idaho Falls Fanning Field

Tue 3/3

6:35 pm-11:53 pm

1 stop6h 18m

$223

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 3/9

1:36 pm-11:36 pm

1 stop9h 00m

Idaho Falls Fanning Field

Thu 3/12

8:00 am-10:46 am

1 stop3h 46m

$229

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 3/10

3:52 pm-11:36 pm

1 stop6h 44m

Idaho Falls Fanning Field

Wed 3/11

5:20 pm-1:38 pm

2 stops21h 18m

$260

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 3/9

9:55 pm-4:43 pm

2 stops17h 48m

Idaho Falls Fanning Field

Thu 3/12

8:00 am-10:46 am

1 stop3h 46m

$261

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 2/26

8:30 am-4:43 pm

1 stop7h 13m

Idaho Falls Fanning Field

Sat 2/28

8:00 am-10:46 am

1 stop3h 46m

$264

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 2/24

8:30 am-4:43 pm

1 stop7h 13m

Idaho Falls Fanning Field

Tue 3/3

5:20 pm-6:11 am

2 stops13h 51m

$267

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 3/4

8:30 am-4:43 pm

1 stop7h 13m

Idaho Falls Fanning Field

Wed 3/11

5:20 pm-10:41 pm

1 stop6h 21m

$277

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 3/4

7:05 am-11:36 pm

2 stops15h 31m

Idaho Falls Fanning Field

Wed 3/11

5:20 pm-10:41 pm

1 stop6h 21m

$285

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 3/10

3:52 pm-11:36 pm

1 stop6h 44m

Idaho Falls Fanning Field

Wed 3/11

5:20 pm-1:38 pm

2 stops21h 18m

$291

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 Friday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $92. 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 $221.

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 $91. Try not to purchase tickets in the morning because they tend to be around $124. 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 January 2026, prices for Portland to Idaho Falls flights are approximately 30% 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

Best Price Found

$60

Fastest flight time

1h 36m

Direct flights

Mon, Tue, Wed, Fri and Sat

Airports in Idaho Falls

1 airport
The best one-way flight to Idaho Falls from Portland in the past 72 hours is $60. The best round-trip flight deal from Portland to Idaho Falls found on momondo in the last 72 hours is $131.
The fastest flight from Portland to Idaho Falls takes 1h 36m
Direct flights go from Portland to Idaho Falls on Monday, Tuesday, Wednesday, Friday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport in Idaho Falls. From Portland there are direct flights to 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 36m 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 $44Free CancellationRating
7.2
706 reviews
Search Allegiant Air flights
DeltaPriceFrom $162Free CancellationRating
7.9
8,120 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $178Free CancellationRating
7.8
2,829 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $193Free CancellationRating
8.0
11,799 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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