Cheap flights from Idaho Falls to Portland

Compare Idaho Falls to Portland flight deals

Find the cheapest month or even day of the year to fly to Portland

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Flight deals from Idaho Falls to Portland

Looking for a cheap last-minute deal or the best round-trip flight from Idaho Falls to Portland? Find the lowest prices on one-way and round-trip tickets right here.

Portland.$122 per passenger.Departing Mon, Jun 29, returning Fri, Jul 3.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Idaho Falls on Mon, Jun 29, arriving in Portland.Inbound direct flight with Allegiant Air departing from Portland on Fri, Jul 3, arriving in Idaho Falls.Price includes taxes and charges.From $122, select.

Portland.$131 per passenger.Departing Fri, Jun 12, returning Fri, Jun 26.Round-trip flight with Allegiant Air.Outbound direct flight with Allegiant Air departing from Idaho Falls on Fri, Jun 12, arriving in Portland.Inbound direct flight with Allegiant Air departing from Portland on Fri, Jun 26, arriving in Idaho Falls.Price includes taxes and charges.From $131, select.

Portland.$191 per passenger.Departing Wed, May 13, returning Sat, May 16.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from Idaho Falls on Wed, May 13, arriving in Portland.Inbound direct flight with Alaska Airlines departing from Portland on Sat, May 16, arriving in Idaho Falls.Price includes taxes and charges.From $191, select.

Portland.$302 per passenger.Departing Wed, Jan 28, returning Tue, Feb 17.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Idaho Falls on Wed, Jan 28, arriving in Portland.Inbound indirect flight with Delta, departing from Portland on Tue, Feb 17, arriving in Idaho Falls.Price includes taxes and charges.From $302, select.

Portland.$336 per passenger.Departing Mon, Jan 26, returning Fri, Jan 30.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Idaho Falls on Mon, Jan 26, arriving in Portland.Inbound indirect flight with Alaska Airlines, departing from Portland on Fri, Jan 30, arriving in Idaho Falls.Price includes taxes and charges.From $336, select.

Portland.$742 per passenger.Departing Fri, Mar 20, returning Fri, Mar 20.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Idaho Falls on Fri, Mar 20, arriving in Portland.Inbound indirect flight with Alaska Airlines, departing from Portland on Fri, Mar 20, arriving in Idaho Falls.Price includes taxes and charges.From $742, select.

Find the cheapest month to fly from Idaho Falls to Portland

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Idaho Falls to Portland flights are currently cheapest in June.

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Direct flights from Idaho Falls to Portland

Idaho Falls to Portland: Alternative routes

Compare routes from Idaho Falls to Portland below. You may find an airport to fly into that's cheaper, faster, or easier than Portland.

Idaho Falls to Portland: Flight information

The things to know before you go.

Cheapest flight found	$122
Cheapest month to fly	June
Average flight time	1 hr, 40 mins
Most popular airline	Alaska Airlines
Average flights per week	17

Finding cheap flights from Idaho Falls to Portland: Frequently asked questions

How much are round-trip flights from Idaho Falls to Portland?

The best price we found for a round-trip flight from Idaho Falls to Portland is $122. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Idaho Falls to Portland?

1 hour and 40 minutes is the average flight time from Idaho Falls to Portland.

Which airlines fly direct from Idaho Falls to Portland?

Alaska Airlines, Horizon Air and SkyWest Airlines fly direct from Idaho Falls to Portland.

How many flights are there a week from Idaho Falls to Portland?

There are 17 flights per week flying from Idaho Falls to Portland, as of January 2026.

When is the cheapest time to fly from Idaho Falls to Portland?

The cheapest month to fly from Idaho Falls to Portland is usually June.

Which upcoming date is cheapest to fly from Idaho Falls Airport to Portland Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Idaho Falls Airport to Portland Airport on Monday, June 29, 2026.

Can I get a direct flight from Idaho Falls Airport to Portland Airport?

Yes – the average flight time is 1 hour and 40 minutes.

How can I find the best flight deal to Portland?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Portland but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Portland?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Portland is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Idaho Falls Airport to Portland?

Currently, Allegiant Air offers the cheapest flight tickets to Portland.

Traveling from Idaho Falls Regional Airport (IDA) to Portland International Airport (PDX): what you need to know

Book a direct flight from Idaho Falls Regional Airport to Portland International Airport and you'll be in the air for an average of 1 hour 45 minutes.
Portland's timezone is UTC-7, which makes Portland one hour behind Idaho Falls.
Give yourself enough time to catch your IDA to PDX flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.
Flying during a peak month such as July? Major public holidays and other high seasons can result in longer queues and delays at security. Play it safe and arrive up to four hours ahead of international flights and two hours before a domestic departure.
Allegiant Air offers direct flights from Idaho Falls Regional Airport to Portland International Airport. Book with this popular airline, then get ready to discover the sights in Portland — and maybe even more of United States if time allows.
Allegiant Air is the airline most travelers choose to fly with on this route.
Allegiant Air is the most punctual carrier that offers IDA to PDX flights, with 66.67% of its services reaching their destination on time.
If you'd like to break up your flight, simply uncheck 'Direct flights only' when searching for your ticket from Idaho Falls Regional Airport to Portland International Airport. Here are the most popular stopovers between IDA and PDX:
- Salt Lake City International Airport
- Denver International Airport
- Metropolitan Oakland International Airport

How to find the cheapest flights from Idaho Falls Regional Airport (IDA) to Portland International Airport (PDX)

At the moment, $59 is the lowest price we've seen for a one-way Idaho Falls Regional Airport to Portland International Airport flight. The best price for a return plane ticket is $122. Remember that fares may change due to demand when booking.
Get cheap tickets from IDA to PDX by booking seven months ahead. According to our research, that's the sweet spot for bagging a bargain.
June is the cheapest month for flights from Idaho Falls Regional Airport to Portland International Airport. If you want to fly during a different time of year, the 'Whole month' tool will give you the lowest airfares across every month.
Never miss a deal on cheap flights from IDA to PDX by creating a Price Alert. We'll send you an email or push notification on the app when a lower fare pops up.
Tailor your trip using filters. Select your preferred departure and arrival times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from Idaho Falls Regional Airport to Portland International Airport.

Handy information about Idaho Falls Regional Airport (IDA)

The address for IDA is 2140 North Skyline.
80.03% of flights departing from Idaho Falls Regional Airport reach their destination on schedule. Given its reliable on-time performance, you're unlikely to experience delays when jetting out of IDA.
To get to Idaho Falls Regional Airport from central Idaho Falls, it'll take about 10 minutes if you're traveling by car. Of course, this depends on traffic. It's approximately 5 kilometers from the airport to the city center.
You can expect a journey time of around 1 hour when using public transport.
Searching for a handy hotel near IDA? If you've booked an early flight from Idaho Falls Regional Airport to Portland International Airport, these stays will have you sleeping moments from check-in:

Arriving at Portland International Airport (PDX)

The last thing you want is a lengthy journey to your hotel if you're arriving on a late Idaho Falls Regional Airport to Portland International Airport flight. Check in to one of these accommodation options near PDX instead:
Follow your own route with a Portland International Airport rental car. Pick up your wheels from Thrifty, Budget or Hertz and venture far and wide through Portland and beyond.
To secure the lowest price, book your ride from Portland International Airport about one week in advance.

Getting from Portland International Airport (PDX) to central Portland

You'll find PDX at 7000 NE Airport Way.
Portland International Airport is roughly 19 kilometers from the center of Portland. Driving there takes about 20 minutes.
Traveling by public transport will take you around 45 minutes.

When to fly to Portland International Airport (PDX)

July is the most popular month for flights from Idaho Falls Regional Airport to Portland International Airport. To escape the crowds, go to Portland in May.
The warmest month in Portland is August, with the temperature ranging between 12ºC (54ºF) and 31ºC (88ºF). Lock in your flights from Idaho Falls Regional Airport to Portland International Airport in this month if this is the type of weather you like.
Search for cheap tickets from IDA to PDX in December if you like cooler conditions. Temperatures are at their lowest then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

Explore more of United States

You've done Portland, now it's time to explore other parts of United States. Journey around 241 kilometers north to Seattle to tick off its leading attractions. From Greyhound: Bus Station to LMN Architects and Boeing Radiation Effects Lab, you'll have a packed itinerary ahead.
Around 467 kilometers north-east of Portland, Spokane is another favorite stop in United States. Get a taste of what this destination has to offer at Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.