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Cheap flights from Portland, Maine to Idaho Falls from $481

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Idaho Falls departing on 10/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Portland, Maine to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:23 pm - 9:09 pmPWM  Portland-IDA Idaho Falls Fanning Field
7h 46m1 stop Denver Intl
United Airlines Logo
7:00 am - 4:02 pmIDA  Idaho Falls Fanning Field-PWM Portland
7h 02m1 stop Denver Intl
$489United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
3:23 pm - 9:09 pmPWM  Portland-IDA Idaho Falls Fanning Field
7h 46m1 stop Denver Intl
United Airlines Logo
10:35 am - 11:21 pmIDA  Idaho Falls Fanning Field-PWM Portland
10h 46m2 stops Denver Intl Newark
$494United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
5:30 am - 3:38 pmPWM  Portland-IDA Idaho Falls Fanning Field
12h 08m2 stops Washington, D.C. Dulles Intl Denver Intl
United Airlines Logo
10:35 am - 11:21 pmIDA  Idaho Falls Fanning Field-PWM Portland
10h 46m2 stops Denver Intl Newark
$499United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
3:23 pm - 9:09 pmPWM  Portland-IDA Idaho Falls Fanning Field
7h 46m1 stop Denver Intl
United Airlines Logo
7:00 am - 4:02 pmIDA  Idaho Falls Fanning Field-PWM Portland
7h 02m1 stop Denver Intl
$529United Airlines
Sat, Oct 31 - Tue, Nov 3
American Airlines Logo
10:56 am - 9:43 pmPWM  Portland-IDA Idaho Falls Fanning Field
12h 47m2 stops Philadelphia Dallas/Fort Worth
American Airlines Logo
1:43 pm - 10:48 pmIDA  Idaho Falls Fanning Field-PWM Portland
7h 05m1 stop Chicago O'Hare Intl
$567American Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
6:00 am - 3:38 pmPWM  Portland-IDA Idaho Falls Fanning Field
11h 38m2 stops Newark Denver Intl
United Airlines Logo
4:30 pm - 11:21 pmIDA  Idaho Falls Fanning Field-PWM Portland
28h 51m3 stops Denver Intl Houston George Bush Intcntl Newark
$614United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
3:23 pm - 9:09 pmPWM  Portland-IDA Idaho Falls Fanning Field
7h 46m1 stop Denver Intl
United Airlines Logo
7:00 am - 4:02 pmIDA  Idaho Falls Fanning Field-PWM Portland
7h 02m1 stop Denver Intl
$618United Airlines
Tue, Nov 3 - Sat, Nov 7
American Airlines Logo
10:56 am - 9:43 pmPWM  Portland-IDA Idaho Falls Fanning Field
12h 47m2 stops Philadelphia Dallas/Fort Worth
American Airlines Logo
7:00 am - 10:00 pmIDA  Idaho Falls Fanning Field-PWM Portland
13h 00m2 stops Dallas/Fort Worth Charlotte Douglas
$622American Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
5:30 am - 3:38 pmPWM  Portland-IDA Idaho Falls Fanning Field
12h 08m2 stops Washington, D.C. Dulles Intl Denver Intl
United Airlines Logo
10:35 am - 9:51 pmIDA  Idaho Falls Fanning Field-PWM Portland
9h 16m2 stops Denver Intl Chicago O'Hare Intl
$628United Airlines
Tue, Nov 3 - Sat, Nov 7
American Airlines Logo
6:00 am - 1:28 pmPWM  Portland-IDA Idaho Falls Fanning Field
9h 28m2 stops Washington, D.C. Reagan-National Chicago O'Hare Intl
American Airlines Logo
1:58 pm - 11:47 pmIDA  Idaho Falls Fanning Field-PWM Portland
7h 49m1 stop Chicago O'Hare Intl
$636American Airlines
Wed, Sep 16 - Tue, Sep 22

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United Airlines flights from Portland, Maine to Idaho Falls

Our best United Airlines deals on Portland, Maine to Idaho Falls flight tickets
United Airlines
Oct 31
PWM3:23 pmPortland
7h 46m
1 stop
IDA9:09 pmIdaho Falls Fanning Field
Nov 3
IDA7:00 amIdaho Falls Fanning Field
7h 02m
1 stop
PWM4:02 pmPortland
$489
United Airlines
Oct 31
PWM3:23 pmPortland
7h 46m
1 stop
IDA9:09 pmIdaho Falls Fanning Field
Nov 3
IDA10:35 amIdaho Falls Fanning Field
10h 46m
2 stops
PWM11:21 pmPortland
$494
United Airlines
Oct 31
PWM5:30 amPortland
12h 08m
2 stops
IDA3:38 pmIdaho Falls Fanning Field
Nov 3
IDA10:35 amIdaho Falls Fanning Field
10h 46m
2 stops
PWM11:21 pmPortland
$499

American Airlines flights from Portland, Maine to Idaho Falls

Our best American Airlines deals on Portland, Maine to Idaho Falls flight tickets
American Airlines
Aug 27
PWM10:56 amPortland
12h 47m
2 stops
IDA9:43 pmIdaho Falls Fanning Field
Aug 31
IDA1:43 pmIdaho Falls Fanning Field
7h 05m
1 stop
PWM10:48 pmPortland
$567
American Airlines
Aug 27
PWM10:56 amPortland
12h 47m
2 stops
IDA9:43 pmIdaho Falls Fanning Field
Aug 31
IDA7:00 amIdaho Falls Fanning Field
13h 00m
2 stops
PWM10:00 pmPortland
$622
American Airlines
Sep 16
PWM6:00 amPortland
9h 28m
2 stops
IDA1:28 pmIdaho Falls Fanning Field
Sep 22
IDA1:58 pmIdaho Falls Fanning Field
7h 49m
1 stop
PWM11:47 pmPortland
$636

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 16, 2026.
Use the filters below to find and compare flights from Portland, Maine to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Sat 10/31

3:23 pm-9:09 pm

1 stop7h 46m

Idaho Falls Fanning Field

Tue 11/3

7:00 am-4:02 pm

1 stop7h 02m

$489

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Sat 10/31

3:23 pm-9:09 pm

1 stop7h 46m

Idaho Falls Fanning Field

Tue 11/3

10:35 am-11:21 pm

2 stops10h 46m

$494

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Sat 10/31

5:30 am-3:38 pm

2 stops12h 08m

Idaho Falls Fanning Field

Tue 11/3

10:35 am-11:21 pm

2 stops10h 46m

$499

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Sat 10/31

3:23 pm-9:09 pm

1 stop7h 46m

Idaho Falls Fanning Field

Tue 11/3

7:00 am-4:02 pm

1 stop7h 02m

$529

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Thu 8/27

10:56 am-9:43 pm

2 stops12h 47m

Idaho Falls Fanning Field

Mon 8/31

1:43 pm-10:48 pm

1 stop7h 05m

$567

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Sat 10/31

6:00 am-3:38 pm

2 stops11h 38m

Idaho Falls Fanning Field

Tue 11/3

4:30 pm-11:21 pm

3 stops28h 51m

$614

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Tue 11/3

3:23 pm-9:09 pm

1 stop7h 46m

Idaho Falls Fanning Field

Sat 11/7

7:00 am-4:02 pm

1 stop7h 02m

$618

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Thu 8/27

10:56 am-9:43 pm

2 stops12h 47m

Idaho Falls Fanning Field

Mon 8/31

7:00 am-10:00 pm

2 stops13h 00m

$622

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Tue 11/3

5:30 am-3:38 pm

2 stops12h 08m

Idaho Falls Fanning Field

Sat 11/7

10:35 am-9:51 pm

2 stops9h 16m

$628

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Wed 9/16

6:00 am-1:28 pm

2 stops9h 28m

Idaho Falls Fanning Field

Tue 9/22

1:58 pm-11:47 pm

1 stop7h 49m

$636

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Portland, Maine to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Portland to Idaho Falls Fanning Field?

American Airlines and United Airlines are the most popular carriers operating from Portland to Idaho Falls Fanning Field

What airlines fly to Idaho Falls?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Idaho Falls from Portland, Maine according to our data. American Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 4 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

When to book flights from Portland, Maine to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Idaho Falls (PWM to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Idaho Falls

Fastest flight time

7h 41m

Direct flights

None
The fastest flight from Portland, Maine to Idaho Falls takes 7h 41m
There are no direct flights from Portland, Maine to Idaho Falls. There are no popular flight routes from Portland, Maine to Idaho Falls.
Search flight deals

Frequently asked questions about flying from Portland, Maine to Idaho Falls

  • How far is Portland to Idaho Falls Fanning Field by plane?

    The distance between Portland and Idaho Falls Fanning Field is about 2067.7 mi. A reasonable flight in good conditions will take 7h 41m.

  • When did momondo last update prices for flights from Portland Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from Portland Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Portland Airport to Idaho Falls Fanning Field Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents required for your trip to Idaho Falls Fanning Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho Falls Fanning Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Idaho Falls?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho Falls from Portland.

Can I find flights from Portland to Idaho Falls with flexible booking policies on momondo?

All flight searches from Portland to Idaho Falls on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Idaho Falls?

momondo provides multiple filters to help you find the best flight to Idaho Falls from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to Idaho Falls right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho Falls from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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