Portland Idaho Falls - Cheap flights

Special flight deals from Portland to Idaho Falls

Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 1 stop
Delta Air Lines
from286 USD
Portland - Idaho Falls
5 days
Tue 06 Oct
PDX-IDA· Direct
Alaska Airlines
Sat 10 Oct
IDA-PDX· 1 stop
Delta Air Lines
from353 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 1 stop
Delta Air Lines
from307 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 1 stop
Delta Air Lines
from337 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 1 stop
Delta Air Lines
from358 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 1 stop
Delta Air Lines
from387 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 1 stop
Delta Air Lines
from387 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 2 stops
Delta Air Lines
from292 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 2 stops
Delta Air Lines
from313 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 2 stops
Delta Air Lines
from343 USD
Portland - Idaho Falls
5 days
Tue 06 Oct
PDX-IDA· 2 stops
Alaska Airlines
Sat 10 Oct
IDA-PDX· 1 stop
Delta Air Lines
from362 USD
Portland - Idaho Falls
5 days
Tue 06 Oct
PDX-IDA· 2 stops
Alaska Airlines
Sat 10 Oct
IDA-PDX· 1 stop
Delta Air Lines
from362 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 2 stops
Delta Air Lines
from364 USD
Portland - Idaho Falls
5 days
Tue 06 Oct
PDX-IDA· 2 stops
Alaska Airlines
Sat 10 Oct
IDA-PDX· 1 stop
Delta Air Lines
from367 USD
Portland - Idaho Falls
8 days
Fri 16 Oct
PDX-IDA· 1 stop
Delta Air Lines
Fri 23 Oct
IDA-PDX· 2 stops
Delta Air Lines
from393 USD

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Find the best time to book cheap flights to Idaho Falls

Flexible on travel dates? Discover the cheapest month to fly to Idaho Falls

Cheapest round-trip flight
from 286 USD
Cheapest month to travel
October
The cheapest day to fly
Friday
Lowest prices
3 months before

Sep

521 USD

Oct

286 USD

Nov

408 USD

Dec

643 USD

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

When is the best time to buy flight tickets?

Find out how far in advance it's worth booking round-trip flights.

6 months before
from
488 USD
3 months before
from
398 USD
30 days before
from
428 USD
7 days before
from
685 USD
1 day before
from
638 USD

Discover the cheapest day to fly

Discover on which day of the week flights are usually the most affordable.

425 USD

Mon

520 USD

Tue

501 USD

Wed

473 USD

Thu

389 USD

Fri

545 USD

Sat

489 USD

Sun

General information

Local time (UTC-7)
22:33, 10 Sep 2026
Flight time from Portland
1 h 35 min
Local currency
USD