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Cheap flights from Pennsylvania to Idaho Falls from $157

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to Idaho Falls departing on 1/7. 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
0 bags

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Find the cheapest flights from Pennsylvania to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
8:00 am - 10:59 pm
DCA
-
IDA
16h 59m1 stop
Alaska Airlines Logo
9:00 am - 9:59 pm
IDA
-
DCA
10h 59m1 stop
$324Alaska Airlines
Sat, Jan 24 - Wed, Jan 28
Delta Logo
4:15 pm - 10:19 pm
JFK
-
IDA
8h 04m1 stop
Delta Logo
1:15 pm - 11:57 pm
IDA
-
JFK
8h 42m1 stop
$326Delta
Fri, Jan 9 - Sat, Jan 17
Alaska Airlines Logo
6:04 pm - 10:59 pm
IAD
-
IDA
30h 55m1 stop
Alaska Airlines Logo
6:58 pm - 4:26 pm
IDA
-
IAD
19h 28m1 stop
$334Alaska Airlines
Thu, Jan 22 - Tue, Jan 27
Alaska Airlines Logo
6:04 pm - 10:59 pm
IAD
-
IDA
30h 55m1 stop
Alaska Airlines Logo
6:58 pm - 4:26 pm
IDA
-
IAD
19h 28m1 stop
$354Alaska Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
7:15 am - 1:30 pm
LGA
-
IDA
8h 15m1 stop
United Airlines Logo
2:40 pm - 11:27 pm
IDA
-
LGA
6h 47m1 stop
$355United Airlines
Fri, Jan 30 - Mon, Feb 2
Delta Logo
4:15 pm - 10:19 pm
JFK
-
IDA
8h 04m1 stop
Delta Logo
6:35 pm - 5:56 am
IDA
-
JFK
9h 21m1 stop
$355Delta
Fri, Jan 9 - Thu, Jan 22
Alaska Airlines Logo
4:36 pm - 6:18 pm
EWR
-
IDA
27h 42m1 stop
Alaska Airlines Logo
6:58 pm - 6:24 pm
IDA
-
EWR
21h 26m1 stop
$358Alaska Airlines
Fri, Jan 30 - Mon, Feb 2
United Airlines Logo
8:15 am - 3:31 pm
LGA
-
IDA
9h 16m2 stops
United Airlines Logo
2:40 pm - 11:27 pm
IDA
-
LGA
6h 47m1 stop
$360United Airlines
Fri, Jan 30 - Mon, Feb 2
American Airlines Logo
6:30 am - 1:37 pm
DCA
-
IDA
9h 07m1 stop
American Airlines Logo
2:02 pm - 11:00 pm
IDA
-
DCA
6h 58m1 stop
$365American Airlines
Sun, Jan 18 - Wed, Mar 4
American Airlines Logo
1:44 pm - 10:36 pm
DCA
-
IDA
10h 52m2 stops
American Airlines Logo
2:02 pm - 11:00 pm
IDA
-
DCA
6h 58m1 stop
$370American Airlines
Sun, Jan 18 - Wed, Mar 4

Alaska Airlines flights from Pennsylvania to Idaho Falls

Our best Alaska Airlines deals on Pennsylvania to Idaho Falls flight tickets
Alaska Airlines
Jan 24
DCA8:00 amWashington, D.C. Reagan-National
16h 59m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 28
IDA9:00 amIdaho Falls Fanning Field
10h 59m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$324
Find similar
Alaska Airlines
Jan 22
IAD6:04 pmWashington, D.C. Dulles Intl
30h 55m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 27
IDA6:58 pmIdaho Falls Fanning Field
19h 28m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
$334
Find similar
Alaska Airlines
Jan 24
IAD6:04 pmWashington, D.C. Dulles Intl
30h 55m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 28
IDA6:58 pmIdaho Falls Fanning Field
19h 28m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
$354
Find similar

Delta flights from Pennsylvania to Idaho Falls

Our best Delta deals on Pennsylvania to Idaho Falls flight tickets
Delta
Jan 9
JFK4:15 pmNew York John F Kennedy Intl
8h 04m
1 stop
IDA10:19 pmIdaho Falls Fanning Field
Jan 17
IDA1:15 pmIdaho Falls Fanning Field
8h 42m
1 stop
JFK11:57 pmNew York John F Kennedy Intl
$326
Find similar
Delta
Jan 9
JFK4:15 pmNew York John F Kennedy Intl
8h 04m
1 stop
IDA10:19 pmIdaho Falls Fanning Field
Jan 22
IDA6:35 pmIdaho Falls Fanning Field
9h 21m
1 stop
JFK5:56 amNew York John F Kennedy Intl
$355
Find similar
Delta
Jan 8
JFK4:15 pmNew York John F Kennedy Intl
8h 04m
1 stop
IDA10:19 pmIdaho Falls Fanning Field
Jan 17
IDA1:15 pmIdaho Falls Fanning Field
8h 42m
1 stop
JFK11:57 pmNew York John F Kennedy Intl
$358
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Pennsylvania 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 December 18, 2025.
Use the filters below to find and compare flights from Pennsylvania to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 1/24

8:00 am-10:59 pm

1 stop16h 59m

Idaho Falls Fanning Field

Wed 1/28

9:00 am-9:59 pm

1 stop10h 59m

$324

New YorkIdaho Falls

JFK - IDA

JFKIDA

New York John F Kennedy Intl

Fri 1/9

4:15 pm-10:19 pm

1 stop8h 04m

Idaho Falls Fanning Field

Sat 1/17

1:15 pm-11:57 pm

1 stop8h 42m

$326

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 1/22

6:04 pm-10:59 pm

1 stop30h 55m

Idaho Falls Fanning Field

Tue 1/27

6:58 pm-4:26 pm

1 stop19h 28m

$334

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 1/24

6:04 pm-10:59 pm

1 stop30h 55m

Idaho Falls Fanning Field

Wed 1/28

6:58 pm-4:26 pm

1 stop19h 28m

$354

New YorkIdaho Falls

LGA - IDA

LGAIDA

New York LaGuardia

Fri 1/30

7:15 am-1:30 pm

1 stop8h 15m

Idaho Falls Fanning Field

Mon 2/2

2:40 pm-11:27 pm

1 stop6h 47m

$355

New YorkIdaho Falls

JFK - IDA

JFKIDA

New York John F Kennedy Intl

Fri 1/9

4:15 pm-10:19 pm

1 stop8h 04m

Idaho Falls Fanning Field

Thu 1/22

6:35 pm-5:56 am

1 stop9h 21m

$355

NewarkIdaho Falls

EWR - IDA

EWRIDA

Newark

Fri 1/30

4:36 pm-6:18 pm

1 stop27h 42m

Idaho Falls Fanning Field

Mon 2/2

6:58 pm-6:24 pm

1 stop21h 26m

$358

New YorkIdaho Falls

LGA - IDA

LGAIDA

New York LaGuardia

Fri 1/30

8:15 am-3:31 pm

2 stops9h 16m

Idaho Falls Fanning Field

Mon 2/2

2:40 pm-11:27 pm

1 stop6h 47m

$360

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sun 1/18

6:30 am-1:37 pm

1 stop9h 07m

Idaho Falls Fanning Field

Wed 3/4

2:02 pm-11:00 pm

1 stop6h 58m

$365

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sun 1/18

1:44 pm-10:36 pm

2 stops10h 52m

Idaho Falls Fanning Field

Wed 3/4

2:02 pm-11:00 pm

1 stop6h 58m

$370

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Pennsylvania 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 month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of February, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $426.

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Thursday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $574. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Monday is $938.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is at noon. Flights from Pennsylvania to Idaho Falls during this time can be as low as $557. Try not to purchase tickets in the afternoon because they tend to be around $686. Of course, these prices can vary depending on the time of year and what airport you fly to.

Can stopping save me money on Pennsylvania to Idaho Falls flights?

You could potentially save up to 40% on your flight if you consider stops on a Pennsylvania to Idaho Falls flight.

Cheap Pennsylvania to Idaho Falls flight deals and tips

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

Fastest flight time

6h 46m

Direct flights

None
The fastest flight from Pennsylvania to Idaho Falls takes 6h 46m
There are no direct flights from Pennsylvania to Idaho Falls. There are no popular flight routes from Pennsylvania to Idaho Falls.
Search flight deals

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

    Prices for flights from Pennsylvania to Idaho Falls Fanning Field Airport were last updated today.

  • How many operators does momondo search for flights from Pennsylvania to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from Pennsylvania 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 Pennsylvania to Idaho Falls Fanning Field Airport.

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

    The required travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Pennsylvania to Idaho Falls

Compare and see reviews for airlines that fly from Pennsylvania to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $223Free CancellationRating
7.9
8,005 reviews
Search Delta flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
American AirlinesPriceFrom $354Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights

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 Pennsylvania to Idaho Falls?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Pennsylvania to Idaho Falls for you.

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

Yes. All flights to Idaho Falls from Pennsylvania on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Pennsylvania to Idaho Falls.

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

Yes. momondo can track prices for Pennsylvania to Idaho Falls flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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