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Cheap flights from Portland, Maine to Idaho Falls from $313

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 8/27. 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

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Find the cheapest flights from Portland, Maine to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
1:18 pm - 11:39 pm
PWM
-
IDA
12h 21m
2 stops
American Airlines Logo
7:48 am - 10:46 pm
IDA
-
PWM
12h 58m
2 stops
$453American Airlines
Tue, May 5 - Wed, May 13
United Airlines Logo
3:23 pm - 9:03 pm
PWM
-
IDA
7h 40m
1 stop
United Airlines Logo
10:40 am - 11:29 pm
IDA
-
PWM
10h 49m
2 stops
$565United Airlines
Thu, May 7 - Tue, May 12
United Airlines Logo
6:00 am - 3:43 pm
PWM
-
IDA
11h 43m
2 stops
United Airlines Logo
10:40 am - 11:59 pm
IDA
-
PWM
11h 19m
2 stops
$570United Airlines
Thu, May 7 - Tue, May 12
United Airlines Logo
6:00 am - 3:43 pm
PWM
-
IDA
11h 43m
2 stops
United Airlines Logo
6:30 am - 3:41 pm
IDA
-
PWM
7h 11m
1 stop
$624United Airlines
Tue, May 5 - Wed, May 13
United Airlines Logo
6:00 am - 3:43 pm
PWM
-
IDA
11h 43m
2 stops
United Airlines Logo
6:30 am - 3:41 pm
IDA
-
PWM
7h 11m
1 stop
$656United Airlines
Tue, May 5 - Wed, May 13
American Airlines Logo
7:19 pm - 1:44 pm
PWM
-
IDA
20h 25m
1 stop
American Airlines Logo
12:44 pm - 12:35 am
IDA
-
PWM
9h 51m
1 stop
$673American Airlines
Mon, Jun 15 - Mon, Jun 22
American Airlines Logo
7:19 pm - 1:44 pm
PWM
-
IDA
20h 25m
1 stop
American Airlines Logo
12:44 pm - 12:35 am
IDA
-
PWM
9h 51m
1 stop
$674American Airlines
Mon, Jun 8 - Sun, Jun 14
American Airlines Logo
1:35 pm - 10:15 pm
PWM
-
IDA
10h 40m
2 stops
American Airlines Logo
12:44 pm - 12:35 am
IDA
-
PWM
9h 51m
1 stop
$676American Airlines
Mon, Jun 8 - Sun, Jun 14
United Airlines Logo
3:23 pm - 9:03 pm
PWM
-
IDA
7h 40m
1 stop
United Airlines Logo
6:30 am - 3:41 pm
IDA
-
PWM
7h 11m
1 stop
$695United Airlines
Tue, May 5 - Wed, May 13
United Airlines Logo
11:08 am - 9:03 pm
PWM
-
IDA
11h 55m
2 stops
United Airlines Logo
6:30 am - 3:41 pm
IDA
-
PWM
7h 11m
1 stop
$700United Airlines
Tue, May 5 - Wed, May 13

United Airlines flights from Portland, Maine to Idaho Falls

Our best United Airlines deals on Portland, Maine to Idaho Falls flight tickets
United Airlines
May 7
PWM3:23 pmPortland
7h 40m
1 stop
IDA9:03 pmIdaho Falls Fanning Field
May 12
IDA10:40 amIdaho Falls Fanning Field
10h 49m
2 stops
PWM11:29 pmPortland
$565
United Airlines
May 7
PWM6:00 amPortland
11h 43m
2 stops
IDA3:43 pmIdaho Falls Fanning Field
May 12
IDA10:40 amIdaho Falls Fanning Field
11h 19m
2 stops
PWM11:59 pmPortland
$570
United Airlines
May 5
PWM6:00 amPortland
11h 43m
2 stops
IDA3:43 pmIdaho Falls Fanning Field
May 13
IDA6:30 amIdaho Falls Fanning Field
7h 11m
1 stop
PWM3:41 pmPortland
$624

American Airlines flights from Portland, Maine to Idaho Falls

Our best American Airlines deals on Portland, Maine to Idaho Falls flight tickets
American Airlines
May 5
PWM1:18 pmPortland
12h 21m
2 stops
IDA11:39 pmIdaho Falls Fanning Field
May 13
IDA7:48 amIdaho Falls Fanning Field
12h 58m
2 stops
PWM10:46 pmPortland
$453
American Airlines
Jun 15
PWM7:19 pmPortland
20h 25m
1 stop
IDA1:44 pmIdaho Falls Fanning Field
Jun 22
IDA12:44 pmIdaho Falls Fanning Field
9h 51m
1 stop
PWM12:35 amPortland
$673
American Airlines
Jun 8
PWM7:19 pmPortland
20h 25m
1 stop
IDA1:44 pmIdaho Falls Fanning Field
Jun 14
IDA12:44 pmIdaho Falls Fanning Field
9h 51m
1 stop
PWM12:35 amPortland
$674

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 April 3, 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

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Tue 5/5

1:18 pm-11:39 pm

2 stops12h 21m

Idaho Falls Fanning Field

Wed 5/13

7:48 am-10:46 pm

2 stops12h 58m

$453

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Thu 5/7

3:23 pm-9:03 pm

1 stop7h 40m

Idaho Falls Fanning Field

Tue 5/12

10:40 am-11:29 pm

2 stops10h 49m

$565

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Thu 5/7

6:00 am-3:43 pm

2 stops11h 43m

Idaho Falls Fanning Field

Tue 5/12

10:40 am-11:59 pm

2 stops11h 19m

$570

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Tue 5/5

6:00 am-3:43 pm

2 stops11h 43m

Idaho Falls Fanning Field

Wed 5/13

6:30 am-3:41 pm

1 stop7h 11m

$624

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Tue 5/5

6:00 am-3:43 pm

2 stops11h 43m

Idaho Falls Fanning Field

Wed 5/13

6:30 am-3:41 pm

1 stop7h 11m

$656

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Mon 6/15

7:19 pm-1:44 pm

1 stop20h 25m

Idaho Falls Fanning Field

Mon 6/22

12:44 pm-12:35 am

1 stop9h 51m

$673

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Mon 6/8

7:19 pm-1:44 pm

1 stop20h 25m

Idaho Falls Fanning Field

Sun 6/14

12:44 pm-12:35 am

1 stop9h 51m

$674

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Mon 6/8

1:35 pm-10:15 pm

2 stops10h 40m

Idaho Falls Fanning Field

Sun 6/14

12:44 pm-12:35 am

1 stop9h 51m

$676
Quickest round-trip

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Tue 5/5

3:23 pm-9:03 pm

1 stop7h 40m

Idaho Falls Fanning Field

Wed 5/13

6:30 am-3:41 pm

1 stop7h 11m

$695

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Tue 5/5

11:08 am-9:03 pm

2 stops11h 55m

Idaho Falls Fanning Field

Wed 5/13

6:30 am-3:41 pm

1 stop7h 11m

$700

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 is the most popular carrier 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 36m

Direct flights

None
The fastest flight from Portland, Maine to Idaho Falls takes 7h 36m
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 36m.

  • 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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