$74 Find Cheap Flights from Portland to Idaho - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Idaho departing on 8/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from Portland to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boisenonstop$192
Idaho Falls
Idaho Fallsnonstop$237
Hailey
Hailey1 stop$393
Lewiston
Lewiston1 stop$445
Twin Falls
Twin Falls1 stop$386
Pocatello
Pocatello1 stop$337
Spokane
Spokanenonstop$227
Boise
Boisenonstop$192
Idaho Falls
Idaho Fallsnonstop$237
Hailey
Hailey1 stop$393
Lewiston
Lewiston1 stop$445
Twin Falls
Twin Falls1 stop$386
Pocatello
Pocatello1 stop$337
Spokane
Spokanenonstop$227

Book Cheap Portland to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Idaho

Wed, Sep 9 - Wed, Sep 16
Alaska Airlines Logo
9:33 pm - 11:55 pm
PDX
-
BOI
1h 22mnonstop
Alaska Airlines Logo
6:00 am - 6:20 am
BOI
-
PDX
1h 20mnonstop
$192Alaska Airlines
Tue, Oct 13 - Sat, Oct 17
Alaska Airlines Logo
9:36 pm - 11:54 pm
PDX
-
BOI
1h 18mnonstop
Alaska Airlines Logo
8:23 pm - 8:50 pm
BOI
-
PDX
1h 27mnonstop
$197Alaska Airlines
Sat, Sep 5 - Fri, Sep 11
Alaska Airlines Logo
2:53 pm - 5:15 pm
PDX
-
BOI
1h 22mnonstop
Alaska Airlines Logo
6:00 am - 6:20 am
BOI
-
PDX
1h 20mnonstop
$207Alaska Airlines
Wed, Sep 23 - Mon, Sep 28
Alaska Airlines Logo
2:53 pm - 5:15 pm
PDX
-
BOI
1h 22mnonstop
Alaska Airlines Logo
8:25 pm - 8:45 pm
BOI
-
PDX
1h 20mnonstop
$213Alaska Airlines
Wed, Sep 9 - Sat, Sep 12
Southwest Logo
11:35 am - 10:30 pm
PDX
-
BOI
9h 55m
2 stops
Southwest Logo
6:40 am - 11:35 am
BOI
-
PDX
5h 55m
1 stop
$222Southwest
Sat, Sep 5 - Fri, Sep 11
Delta Logo
5:30 am - 9:55 am
PDX
-
BOI
3h 25m
1 stop
Delta Logo
5:59 pm - 10:31 pm
BOI
-
PDX
5h 32m
1 stop
$227Delta
Thu, Aug 20 - Wed, Aug 26
Delta Logo
5:08 pm - 10:32 pm
PDX
-
IDA
4h 24m
1 stop
Delta Logo
6:00 am - 8:37 am
IDA
-
PDX
3h 37m
1 stop
$267Delta
Tue, Aug 25 - Tue, Sep 1
United Airlines Logo
9:00 am - 4:39 pm
PDX
-
JAC
6h 39m
1 stop
United Airlines Logo
4:25 pm - 9:05 pm
JAC
-
PDX
5h 40m
1 stop
$277United Airlines
Fri, Aug 7 - Fri, Aug 7
Multiple Airlines Logo
10:30 am - 1:06 pm
PDX
-
IDA
1h 36mnonstop
Multiple Airlines Logo
3:55 pm - 4:36 pm
IDA
-
PDX
1h 41mnonstop
$286Multiple Airlines
Wed, Oct 28 - Sun, Nov 1
United Airlines Logo
9:00 am - 3:28 pm
PDX
-
JAC
5h 28m
1 stop
United Airlines Logo
2:25 pm - 9:13 pm
JAC
-
PDX
7h 48m
1 stop
$287United Airlines
Booking Insights

KAYAK's insights & trends for Portland to Idaho flights

Get data-powered insights and trends into flights from Portland to Idaho to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Portland to Idaho?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to Idaho departing in September.

Flight prices are below average for this route right now.

Flights to Idaho from Portland usually cost between $233 and $407 in September.
The lowest price found in the past 5 days was $192 on Alaska Airlines (Sep 9-Sep 16).

What is the cheapest Portland to Idaho flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Idaho from Portland found in the last 5 days was to Idaho Falls, at $144 round-trip. The most popular route is from Portland (PDX) to Boise (BOI), and the cheapest round-trip airline ticket found on this route in the last 5 days was $211.

What is the cheapest time of day to fly to Idaho?

The average price for all round-trip flights from Portland to Idaho depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Idaho is generally at night, when round-trip flights cost $260 on average. Morning departures are around 2% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the morning, which is peak travel time and where the average cost of a ticket is $303.

Can I save money by flying with a layover from Portland to Idaho?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $314, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Portland to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Idaho is February, when tickets cost $226 (return) on average. On the other hand, the most expensive months are January and June, when the average cost of round-trip tickets is $358 and $339 respectively.

What’s the cheapest day of the week to fly from Portland to Idaho?

The average price of all round-trip flights from Portland to Idaho clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Idaho on a Saturday and more expensive on a Sunday. On your return trip to Portland, you should consider flying back on a Thursday, and avoid Sundays for better deals.

How far in advance should I book a flight from Portland to Idaho?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Idaho, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to Idaho, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low season

April

Cheapest flight

$74
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Portland to Idaho Falls

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Portland to Idaho?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Idaho is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to Idaho with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Idaho?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Portland to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Portland to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Idaho? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12717 reviews
8.1Boarding
7.8Comfort
7.0Food
7.0Entertainment
8.5Crew
Airline reviews

I would love it if Alaska Airlines brought back the complimentary beverage service on short flights

10.0 ExcellentChristine, Jul 2026
PDX - SEA
Read more Alaska Airlines reviews

I would love it if Alaska Airlines brought back the complimentary beverage service on short flights

the flight was fine, But I paid extra for an Aisle seat both planes and did not get what I paid for when you pay an extra almost $80 and do not get the desired seats it was frustrating I don't fly much because of my legs need more room. thank you for your attention to this

Our seat assignments were mysteriously changed such that our boarding was delayed when they tried to fix it, but to no avail. It took more than 15 min. before we sat down. Then the catering delayed our plane for 35 min.

The flight was delayed by over an hour with no explanation.

Alaska is a great airline, consistent, on time and friendly employees

I did not try their food or log in to the WiFi but the rest of the trip both ways was easy and most pleasant.

I liked the free wifi on my SEA to PDX leg. I would have liked it on my return trip too.

The seats are too small/crowded. It is frustrating to be forced to sit with someone who is overweight as they crown the other seat. Nothing against the person…just the airline companies who continue(over decades!)to reduce seat sizes. Americans are fat. Those of us who are not are tired of being compromised by the airline companies who don’t faces that fact and make adjustments. Maybe have “overweight seats”? Maybe give us a discount for being forced into an uncomfortable flight due to others overweightness? Please, make adjustments…be accountable. Thanks!

Wonderful as always! Pleasant staff, smooth ride, and timely departure.

Great! No issues at all. Friendly staff, on time flight, and smooth, comfortable flight.

I missed the flight because the Minneapolis flight was 49 minutes LATE, and the Boise flight LEFT 24 minutes EARLY!

We got stuck on the tarmac taxiing after landing early so we didn’t get off the plane until an hour later than we thought we would

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Having to up charge for a seat assignment is not good. Delta can do better

My seat had no padding, it was literally plywood with a plastic cover. I could not change seats on my 10 hour flight. My excitement for this trip helped me deal with the pain.

The flights were on time- Great service Would have liked more options for food choices.

The brakes on the A220 are sensitive and uncomfortably grabby

They we able to seat my companion and I next to each other. Plane’s temperature was very cool. Willl be more prepared on return trip.

Plenty of overhead compartment room. The seat choice option is horrendous as best.

Flight delays - issues with delays waiting for a gate in Denver

I booked through Hawaiian which was supposed to have merged with Alaskan but offered free checked bags and said there would be seat selection at the airport. This was not honored by Alaskan Airlines and they even went out of their way to say “we are not Hawaiian and Hawaiian cannot pick seats on our airline ”. They told us that we could not change seats and that all tickets booked through Hawaiian were “saver fares”. The staff was rude and said that we would be helped last after they take care of the customers that booked through Alaskan. Once we got on the flight in our middle seats they played a message that said they have merged with Hawaiian and you can book on either website which would have been funny if we were not so uncomfortable. All in all it was a terrible experience and I do not recommend that anyone fly Alaskan unless they absolutely have to.

A cold sandwich would be much better than the warm gummy croissant.

Seats were so uncomfortable. Used to southwest so this was really disappointing. No wifi made for a long5 hour flight

It’s really tough when you purchase tickets and you are unable to purchase your seats, and just get random seats when you are traveling with someone.

Having enough fuel to get to our destination seems like it should be a given when you board a plane. Not in this case, delayed hours to refuel.

Almost everything was perfecto expect for entertainment. There are not a many options.

The screen where I sat was not working and charger also poorly. Can’t enjoy entertainments and space of seat was narrow.

It was poor a four hour delay and no explanation for the delay. What’s a 35 dollars going to do. It also made me miss my car rental,

It was on time. Flight was comfortable. Staff was nice. It was the way a flight should always be.

The price was the only good thing about this flight. It was scary during takeoff when the plane tilted side to side. It made me feel very nervous as I have never had a take-off that unsmooth. There was no on-flight movie or music options and the only complimentary option was water. Other airlines offer trail mix or a caramel cookie and pop options as complimentary. This flight was a 2.5 hour flight. I understand for shorter flights not having options, but a flight 2 hours or longer should offer more complimentary options and in flight entertainment. Also the seats did not recline and for a longer flight reclining seats are a must for comfort.

A very pleasant flight but it would be greatly improved with wifi to help entertain kids

This is a no frills, get it done, efficient airline. The seat is a lawn chair. You better bring your own entertainment. If you want something other than water you need to pay for it. But they will get you to your destination quickly, on time, and then they will turn the flight around and go right back where they came from. Reliably. Couple times a week tops. If it fits into your schedule, you can’t get there cheaper or faster.

A three hour delay to board and then another hour on the tarmac because they couldn't get a tractor? Ugh.

Allegiant canceled the flight. The flight the next day was full. Allegiant did not provide any compensation besides a refund. Last time on Allegiant.

Seats were very uncomfortable and being charged for snacks and water.........

The flight was very delayed (in BOTH directions - outbound and returning). The flight was very very cramped. The plane taxi'd on the runway for a really long time, and I got claustrophobic being in such a tight seat. The pilot and crew both indicated that we were going to make up lost time due to the delay, but the plane arrived LATER than expected.

I did not go on my trip. I requested a refund and still have not received it.

Everything you need to know for your flight from Portland to Idaho

Information on your arrival and departure airports