Cheap flights from Portland to Idaho Falls

Portland
PDX
Idaho Falls
IDA

Flight deals from Portland to Idaho Falls

Below you can see the best deals on flights Portland — Idaho Falls for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 1 September, from $111.

Top 10 cheap flights from Portland to Idaho Falls

About the Portland — Idaho Falls flight

Looking for cheap flights from Portland to Idaho Falls? Compare fares from different airlines, check the flight schedule and travel time — and book your Portland — Idaho Falls ticket online at the best price.

The route has direct flights — around 26 flights per week, flights are operated by Alaska Airlines, a nonstop flight takes about 1 h 36 min, the distance between the cities is around 875 km.

Planning your trip? You may find our Idaho Falls travel guide, how to get from the airport into town and Idaho Falls weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $111Min. price
SeptemberCheapest
AugustPeak season
YesDirect flights
875 kmDistance
1 h 36 minTravel time
1Airlines
26 / wkFlights

Flight schedule from Portland to Idaho Falls

The table shows direct flights from Portland to Idaho Falls on the selected date. The flight takes approximately 1 h 36 min. Regular flights are operated by Alaska Airlines. Departures from Portland International Airport airports, arrivals at Idaho Falls Regional Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 16 Aug 2026

Flight ticket prices by day: Portland — Idaho Falls

Below is a calendar of the lowest flight ticket prices for Portland — Idaho Falls by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $111 in September, and the most expensive are around $187 in August. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Portland to Idaho Falls by month. Tickets are usually cheapest in February (around $107) and priciest in November (about $167) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$112lowMay$107lowSep$163high
Feb$107lowJun$135mediumOct$130medium
Mar$126mediumJul$158highNov$167high
Apr$112lowAug$153highDec$167high

Some values are estimated based on seasonality.

When to fly

Weather in Idaho Falls: it is warmest in July (up to 32 °C on average) and coolest in January (around 0 °C). The driest month is July.

Tickets are usually cheapest in September and most expensive in August. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Idaho Falls

Dry and wet days · Idaho Falls

Wind speed and direction · Idaho Falls

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How to get the best deal on a Portland — Idaho Falls ticket

  • Book ahead: fares for Portland — Idaho Falls are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to Idaho Falls is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Portland — Idaho Falls route are operated by 1 airline; Alaska Airlines runs the most flights (around 100% of all flights). Compare carriers, flight shares and schedules below.

  • Alaska AirlinesAS
    9x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight PDX → IDA9x/week
      Duration
      1h 46m
      Days
      MTWTFSS
    100.0%Open →

Cities and airports on the Portland — Idaho Falls route

Flights Portland — Idaho Falls depart from Portland International Airport and arrive at Idaho Falls Regional Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Portland

PDX
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Idaho Falls

IDA
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Portland — Idaho Falls flight

How long is the flight from Portland to Idaho Falls?

A nonstop Portland — Idaho Falls flight takes about 1 h 36 min — the distance between the cities is around 875 km.

How far is it from Portland to Idaho Falls?

The distance from Portland to Idaho Falls is about 875 km, which a nonstop flight covers in around 1 h 36 min.

Are there direct flights from Portland to Idaho Falls?

Yes, there are nonstop flights Portland — Idaho Falls — around 26 flights per week.

Which airlines fly from Portland to Idaho Falls?

Airlines operating Portland — Idaho Falls include Alaska Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Portland — Idaho Falls flights use?

Flights from Portland depart from Portland International Airport, and arrive at Idaho Falls Regional Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Portland to Idaho Falls?

The price of a Portland — Idaho Falls ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in August. Tickets typically cost between $111 and $187. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Portland — Idaho Falls?

Flights Portland — Idaho Falls are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Portland to Idaho Falls?

To catch a low fare Portland — Idaho Falls, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Portland

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Where else you can fly from Idaho Falls

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SeattleDenverSalt Lake CityDallasChicagoPhoenixMissoulaTri-CitiesRenoRapid CityGreat FallsLas VegasManhattanCheyenne

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