$324 Find Cheap Flights from Portland to Idaho - Compare and Save

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1 adult, Economy, 0 bags

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Cheap Flights from Portland to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sort by: Cheapest
Boise
8h 12m2 stops
from $403per person
Idaho Falls
Idaho Falls
7h 46m3 stops
from $419per person
Booking Insights

Price, demand and travel trends for Portland to Idaho flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Portland to Idaho recently?

The cheapest fares from Portland to Idaho on KAYAK in the last week were to Boise Air Term. Gowen Fld (BOI) from $403 round-trip and to Idaho Falls Fanning Field (IDA) from $419 round-trip.

How do fares into airports in Idaho compare?

According to KAYAK data from the last 12 months, the cheapest airports to fly into Idaho from Portland are:

• Boise Air Term. Gowen Fld (BOI) (avg. price $527)
• Idaho Falls Fanning Field (IDA) (avg. price $780)

How do fares from Portland to Idaho vary by day of the week?

On average, Thursday is the cheapest day to fly from Portland to Idaho and Monday is the most expensive. Looking at the past 12 months of KAYAK data, it's 127% more expensive to fly on a Monday compared to Thursday.

What's the best time of day to fly from Portland to Idaho?

It's cheapest to fly to Idaho in the evening with average prices of $368. The afternoon is the most expensive time to fly, with average prices of $629.

Key details for Portland to Idaho flights

Low season

December

Cheapest flight

$324
Beat the crowds with an average 82% drop in travelers.
The most popular month to fly with an average 63% increase in travelers.
One-way flight from Portland to Boise

Your Portland to Idaho flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Portland to Idaho?

    Yes. Fares from Portland to Idaho are low right now. As a rule of thumb, a round-trip under $470 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Portland to Idaho?

    Over the past 12 months, round-trip fares from Portland to Idaho have typically cost between $470 and $814.

  • What are the main airports serving Idaho?

    There are 9 airports in Idaho. 75% of KAYAK users choose Boise Air Term. Gowen Fld (BOI) as their arrival airport, while 25% choose Idaho Falls Fanning Field (IDA).

  • Which airlines fly nonstop from Portland to Idaho?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Portland to Idaho. One-stop options include Delta and United Airlines.

  • Which destinations in Idaho can I fly nonstop from Portland?

    Based on the flight schedule for the next 3 months, there are no nonstop flights from Portland to Idaho. The most popular destination you can reach with one stop is Boise.

  • Which cabin classes are available from Portland to Idaho?

    On flights from Portland to Idaho you can book Economy Class or First Class.

  • What are some popular landmarks around Idaho?

    Idaho is home to many popular sights. KAYAK travelers' favorites include:

    • Idaho Central Arena
    • Julia Davis Park
    • Discovery Center of Idaho
    • Boise Art Museum

Your guide to booking Portland to Idaho flights

Get tips on when to book, when to fly and what to know before your trip.
  • Flexible with your dates? Fly in January to save some money. It's typically the cheapest month on this route, while flights in February will cost you the most.
  • Fly out on a Thursday to get the cheapest fares. Avoid Monday flights, which are about 127% more expensive.
  • If you're watching your budget, fly into Boise Air Term. Gowen Fld (BOI) which has the lowest average airfare in the region. Just remember to budget for any onward travel by bus, car or domestic flight.
  • Start your trip in Boise, the most popular destination in Idaho. From there, it's easy to continue on to other popular spots such as Idaho Falls, Coeur d'Alene and Twin Falls.

Reviews of the top airlines flying from Portland to Idaho

 
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.
7.3
United AirlinesOverall score based on 10486 reviews
7.7Boarding
7.1Entertainment
8.1Crew
6.7Food
7.3Comfort
Airline reviews

Deplorable not to have WiFi on 5 hr cross country flight and spend thousands of dollars

2.0 MediocreBrian, Nov 2026
Read more United Airlines reviews

Deplorable not to have WiFi on 5 hr cross country flight and spend thousands of dollars

We left nearly 3 hours late...so that was not a good experience. We boarded and then ended up about 1 hour stuck at the gate. Not a good experience.

It is completely insane to me that first class does not include WiFi. Also does not include lounge access. Port for phone charging did not work. The crew was absolutely lovely, and the food was excellent.

I appreciate how quickly and kindly the people at the gate at DCA accommodated several of us who wanted to switch from the 6pm flight to the 5pm flight at the last minute. The flight crew was helpful to us too (dealing with luggage).

Very uncomfortable and cramped seats. Everything else was okay, the crew members were nice but nothing was exceptional.

Check in went smoothly. Flight attendant who was assigned my area barely paid any attention to me! She acted as though she was extremely busy and flustered. Maybe she was new?! I told her to change the language on my screen, she said she’d come back to help me but never did so I was able to solve the problem on my own. She came back and said she’d made adjustments on her end. Highly doubt it because I found the setting to change the language! Also, I noticed everyone was eating before we landed so I pushed my help button and she never came so I got up to find her to ask her if I can have breakfast. She said they are not serving breakfast but I can have a sandwich. Yes, that was her response as I saw everyone eating breakfast!!!

United staff were very communicative, the new starlink Wifi is amazing as I was able to work easily.

Both my flight where delayed Had 25min to make it to my transfer flight

I just got back from a trip with 3 flights each way. The flights were good and we were happy with out experience. There was one steward on our first flight that was harsh and grump with passengers. It did not leave a good impression. All of the other flight crews were great on the other five flights.

They changed my flight 5 hours before it took off and changed my connecting airport messing up my entire 1st day in Japan.

Flight was comfortable- just had to endure a 1 hr delay because of some maintenance issue. Happy that American Airlines does these final checks but just wish they would conduct this maintenance before the flights.

All good. Flight crew was super friendly at the end of a long day

All good. Easy check in and boarding. Lovely flight crew

Both directions of our trip were befuddled by massive delays, one of which led to our connecting flight being grounded mid air due to storms that we’d have missed if we were on time. The other our originating flight was delayed repeatedly until it arrived at our connecting airport later than our final leg was even supposed to have arrived. American cannot seem to manage rebooking s for a family party… both directions we had to come up with a plan to get to Boston stay overnight only one night each direction was covered by the airline -and take a bus to or from our destination. Missed an entire leg of our trip, hotel cancellation fees, expensive stay in Boston and bus ticket expenses are unlikely to be comped and the meal vouchers are worthless.

My flight was 4 hours delayed on departure at 6a causing me to miss my connection at DCA. I had to scramble to find a seat home on a later flight and instead of an exit seat, I was in row 30 on a flight getting me home 5 hours later than planned. The AA team on the ground did a fine job. AA continues to run the airline like the passengers are cargo.

Flight delays for communication overall not a good experience uncomfortable on the plane. Person in front of me reclined his seat, putting them inches from my lap.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Flight was delayed after boarding and no idea when it would take off. Crew in Portland did arrange for transport to Boston for a different set of flights to my destination.

Seats are so close together. Middle seats should be discounted.

More options for your flight from Portland to Idaho

Complete your trip to Idaho with a hotel stay or car rental