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Cheap flights from Portland to Idaho Falls from $134

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
10:30 am - 1:17 pmPDX  Portland-IDA Idaho Falls Fanning Field
1h 47mnonstop
Alaska Airlines Logo
3:44 pm - 4:48 pmIDA  Idaho Falls Fanning Field-PDX Portland
2h 04mnonstop
$252Alaska Airlines
Wed, Dec 9 - Mon, Dec 14
Alaska Airlines Logo
10:30 am - 1:17 pmPDX  Portland-IDA Idaho Falls Fanning Field
1h 47mnonstop
Alaska Airlines Logo
3:44 pm - 4:48 pmIDA  Idaho Falls Fanning Field-PDX Portland
2h 04mnonstop
$257Alaska Airlines
Fri, Dec 4 - Mon, Dec 7
Alaska Airlines Logo
10:30 am - 1:19 pmPDX  Portland-IDA Idaho Falls Fanning Field
1h 49mnonstop
Alaska Airlines Logo
3:58 pm - 4:50 pmIDA  Idaho Falls Fanning Field-PDX Portland
1h 52mnonstop
$257Alaska Airlines
Thu, Jan 7 - Mon, Jan 11
Alaska Airlines Logo
10:30 am - 1:15 pmPDX  Portland-IDA Idaho Falls Fanning Field
1h 45mnonstop
Alaska Airlines Logo
3:55 pm - 4:55 pmIDA  Idaho Falls Fanning Field-PDX Portland
2h 00mnonstop
$257Alaska Airlines
Fri, Dec 18 - Mon, Dec 21
Multiple Airlines Logo
10:22 am - 8:30 pmPDX  Portland-IDA Idaho Falls Fanning Field
9h 08m1 stop Phoenix-Mesa Gateway
Multiple Airlines Logo
7:48 pm - 3:03 pmIDA  Idaho Falls Fanning Field-PDX Portland
20h 15m2 stops Las Vegas Harry Reid Intl Denver Intl
$319Multiple Airlines
Thu, Jan 7 - Mon, Jan 11
Delta Logo
5:45 am - 12:17 pmPDX  Portland-IDA Idaho Falls Fanning Field
5h 32m1 stop Salt Lake City
Delta Logo
6:59 pm - 11:59 pmIDA  Idaho Falls Fanning Field-PDX Portland
6h 00m1 stop Salt Lake City
$338Delta
Wed, Dec 9 - Mon, Dec 14
Delta Logo
5:45 am - 12:17 pmPDX  Portland-IDA Idaho Falls Fanning Field
5h 32m1 stop Salt Lake City
Delta Logo
5:35 am - 1:35 pmIDA  Idaho Falls Fanning Field-PDX Portland
9h 00m2 stops Salt Lake City Seattle/Tacoma Intl
$343Delta
Wed, Dec 9 - Mon, Dec 14
Delta Logo
5:45 am - 12:15 pmPDX  Portland-IDA Idaho Falls Fanning Field
5h 30m1 stop Salt Lake City
Delta Logo
6:59 pm - 11:59 pmIDA  Idaho Falls Fanning Field-PDX Portland
6h 00m1 stop Salt Lake City
$428Delta
Fri, Nov 27 - Fri, Dec 4
Multiple Airlines Logo
12:52 pm - 11:46 amPDX  Portland-IDA Idaho Falls Fanning Field
21h 54m2 stops Ontario Las Vegas Harry Reid Intl
Multiple Airlines Logo
6:37 pm - 12:46 pmIDA  Idaho Falls Fanning Field-PDX Portland
19h 09m1 stop Las Vegas Harry Reid Intl
$524Multiple Airlines
Tue, Nov 24 - Sun, Nov 29
Multiple Airlines Logo
12:52 pm - 11:46 amPDX  Portland-IDA Idaho Falls Fanning Field
21h 54m2 stops Ontario Las Vegas Harry Reid Intl
Multiple Airlines Logo
6:37 pm - 12:46 pmIDA  Idaho Falls Fanning Field-PDX Portland
19h 09m1 stop Las Vegas Harry Reid Intl
$589Multiple Airlines
Tue, Nov 24 - Sun, Nov 29

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Alaska Airlines flights from Portland to Idaho Falls

Our best Alaska Airlines deals on Portland to Idaho Falls flight tickets
Alaska Airlines
Dec 9
PDX10:30 amPortland
1h 47m
IDA1:17 pmIdaho Falls Fanning Field
Dec 14
IDA3:44 pmIdaho Falls Fanning Field
2h 04m
PDX4:48 pmPortland
$252
Alaska Airlines
Dec 4
PDX10:30 amPortland
1h 47m
IDA1:17 pmIdaho Falls Fanning Field
Dec 7
IDA3:44 pmIdaho Falls Fanning Field
2h 04m
PDX4:48 pmPortland
$257
Alaska Airlines
Dec 22
PDX10:30 amPortland
1h 45m
IDA1:15 pmIdaho Falls Fanning Field
Dec 29
IDA6:00 amIdaho Falls Fanning Field
4h 32m
1 stop
PDX9:32 amPortland
$262

Delta flights from Portland to Idaho Falls

Our best Delta deals on Portland to Idaho Falls flight tickets
Delta
Dec 9
PDX5:45 amPortland
5h 32m
1 stop
IDA12:17 pmIdaho Falls Fanning Field
Dec 14
IDA6:59 pmIdaho Falls Fanning Field
6h 00m
1 stop
PDX11:59 pmPortland
$338
Delta
Dec 9
PDX5:45 amPortland
5h 32m
1 stop
IDA12:17 pmIdaho Falls Fanning Field
Dec 14
IDA5:35 amIdaho Falls Fanning Field
9h 00m
2 stops
PDX1:35 pmPortland
$343
Delta
Nov 27
PDX5:45 amPortland
5h 30m
1 stop
IDA12:15 pmIdaho Falls Fanning Field
Dec 4
IDA6:59 pmIdaho Falls Fanning Field
6h 00m
1 stop
PDX11:59 pmPortland
$428

momondo Fare Finder

 
Use the filters below to find and compare flights from Portland to Idaho Falls that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Wed 12/9

10:30 am-1:17 pm

Nonstop1h 47m

Idaho Falls Fanning Field

Mon 12/14

3:44 pm-4:48 pm

Nonstop2h 04m

$252

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Fri 12/4

10:30 am-1:17 pm

Nonstop1h 47m

Idaho Falls Fanning Field

Mon 12/7

3:44 pm-4:48 pm

Nonstop2h 04m

$257
Quickest round-trip

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Thu 1/7

10:30 am-1:19 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 1/11

3:58 pm-4:50 pm

Nonstop1h 52m

$257

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Fri 12/18

10:30 am-1:15 pm

Nonstop1h 45m

Idaho Falls Fanning Field

Mon 12/21

3:55 pm-4:55 pm

Nonstop2h 00m

$257

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Thu 1/7

10:22 am-8:30 pm

1 stop9h 08m

Idaho Falls Fanning Field

Mon 1/11

7:48 pm-3:03 pm

2 stops20h 15m

$319

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Wed 12/9

5:45 am-12:17 pm

1 stop5h 32m

Idaho Falls Fanning Field

Mon 12/14

6:59 pm-11:59 pm

1 stop6h 00m

$338

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Wed 12/9

5:45 am-12:17 pm

1 stop5h 32m

Idaho Falls Fanning Field

Mon 12/14

5:35 am-1:35 pm

2 stops9h 00m

$343

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Fri 11/27

5:45 am-12:15 pm

1 stop5h 30m

Idaho Falls Fanning Field

Fri 12/4

6:59 pm-11:59 pm

1 stop6h 00m

$428

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Tue 11/24

12:52 pm-11:46 am

2 stops21h 54m

Idaho Falls Fanning Field

Sun 11/29

6:37 pm-12:46 pm

1 stop19h 09m

$524

PortlandIdaho Falls

PDX Portland - IDA Idaho Falls Fanning Field

PDXIDA

Portland

Tue 11/24

12:52 pm-11:46 am

2 stops21h 54m

Idaho Falls Fanning Field

Sun 11/29

6:37 pm-12:46 pm

1 stop19h 09m

$589

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 July, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $143.

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 $107. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Saturday is $607.

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 in the afternoon. Flights from Portland to Idaho Falls during this time can be as low as $95. Try not to purchase tickets in the morning because they tend to be around $268. 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 flights?

There is only 1 cabin class available to choose from on Portland to Idaho Falls 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?

You could potentially save up to 61% on your flight if you consider stops on a Portland to Idaho Falls flight.

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

As of October 2026, prices for Portland to Idaho Falls flights are approximately 15% 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

$134

Fastest flight time

1h 45m

Direct flights

Every day

Airports in Idaho Falls

1 airport
The best one-way flight to Idaho Falls from Portland in the past 72 hours is $134. The best round-trip flight deal from Portland to Idaho Falls found on momondo in the last 72 hours is $252.
The fastest flight from Portland to Idaho Falls takes 1h 45m
Direct flights go from Portland to Idaho Falls every day.
There is 1 airport in Idaho Falls. From Portland there are direct flights to Idaho Falls Fanning Field (IDA).
Search flight deals

Frequently asked questions about flying from Portland to Idaho Falls

  • 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 45m 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 $68Free CancellationRating
7.3
679 reviews
Search Allegiant Air flights
DeltaPriceFrom $136Free CancellationRating
7.8
8,693 reviews
Search Delta flights
Alaska AirlinesPriceFrom $193Free CancellationRating
7.9
13,135 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Portland to Idaho Falls

    Alaska Airlines flies from Portland to Idaho Falls around 4 times per week, with 13,135 momondo users rating the airline 7.9/10. The cheapest Alaska Airlines deal from Portland to Idaho Falls in the last 72 hours was $193 (round-trip), much lower than the average airfare cost of $422 for Alaska Airlines flights on this route.

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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