$149 Find Cheap Flights from Newark Liberty Airport to Idaho - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Newark to Idaho departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Idaho, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Idaho, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Newark to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$297
Idaho Falls
Idaho Falls1 stop$349
Hailey
Hailey2 stops$471
Lewiston
Lewiston1 stop$1,094
Pocatello
Pocatello2 stops$512
Spokane
Spokane1 stop$303
Boise
Boise1 stop$297
Idaho Falls
Idaho Falls1 stop$349
Hailey
Hailey2 stops$471
Lewiston
Lewiston1 stop$1,094
Pocatello
Pocatello2 stops$512
Spokane
Spokane1 stop$303

Book Cheap Newark to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Newark to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Newark to Idaho

Tue, Aug 25 - Mon, Aug 31
Delta Logo
6:00 am - 12:49 pm
EWR
-
BOI
8h 49m
1 stop
Delta Logo
6:45 pm - 6:00 am
BOI
-
EWR
9h 15m
1 stop
$297Delta
Tue, Sep 15 - Wed, Sep 23
Delta Logo
5:59 pm - 11:57 pm
EWR
-
GEG
8h 58m
1 stop
Delta Logo
5:40 am - 4:49 pm
GEG
-
EWR
8h 09m
1 stop
$303Delta
Wed, Sep 16 - Mon, Sep 28
Delta Logo
5:59 pm - 11:57 pm
EWR
-
GEG
8h 58m
1 stop
Delta Logo
10:50 pm - 9:24 am
GEG
-
EWR
7h 34m
1 stop
$315Delta
Sat, Aug 15 - Fri, Aug 21
American Airlines Logo
5:29 am - 2:02 pm
EWR
-
BOI
10h 33m
1 stop
American Airlines Logo
5:19 pm - 6:00 am
BOI
-
EWR
10h 41m
1 stop
$318American Airlines
Thu, Sep 10 - Thu, Sep 17
Delta Logo
7:15 am - 12:14 pm
EWR
-
GEG
7h 59m
1 stop
Delta Logo
10:50 pm - 9:24 am
GEG
-
EWR
7h 34m
1 stop
$327Delta
Wed, Oct 7 - Sun, Oct 11
Alaska Airlines Logo
9:30 am - 2:40 pm
EWR
-
GEG
8h 10m
1 stop
Alaska Airlines Logo
8:21 am - 11:25 pm
GEG
-
EWR
12h 04m
1 stop
$341Alaska Airlines
Tue, Oct 27 - Wed, Oct 28
Alaska Airlines Logo
7:00 am - 1:14 pm
EWR
-
BOI
8h 14m
1 stop
Alaska Airlines Logo
8:00 pm - 6:04 am
BOI
-
EWR
8h 04m
1 stop
$344Alaska Airlines
Tue, Aug 11 - Fri, Aug 14
American Airlines Logo
6:50 am - 2:20 pm
EWR
-
BOI
9h 30m
1 stop
American Airlines Logo
1:55 pm - 11:59 pm
BOI
-
EWR
8h 04m
1 stop
$365American Airlines
Sat, Jul 4 - Sat, Jul 25
United Airlines Logo
6:00 am - 11:45 am
EWR
-
IDA
7h 45m
1 stop
United Airlines Logo
4:14 pm - 1:04 am
IDA
-
EWR
6h 50m
1 stop
$392United Airlines
Mon, Sep 7 - Thu, Sep 10
United Airlines Logo
6:00 am - 1:29 pm
EWR
-
IDA
9h 29m
1 stop
United Airlines Logo
2:25 pm - 11:58 pm
IDA
-
EWR
7h 33m
1 stop
$410United Airlines
Booking Insights

KAYAK's insights & trends for Newark to Idaho flights

Get data-powered insights and trends into flights from Newark to Idaho to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Newark Airport to Idaho?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Newark Airport to Idaho departing in August.

What is the cheapest month to fly from Newark Airport to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Newark Airport to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Newark Airport to Idaho is April, when tickets cost $112 (return) on average. On the other hand, the most expensive months are January and May, when the average cost of round-trip tickets is $400 and $389 respectively.

How far in advance should I book a flight from Newark Airport to Idaho?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Newark Airport to Idaho, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Newark Airport to Idaho, you should book around 6 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$149
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Newark Liberty Airport to Boise

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Newark Liberty Airport to Idaho?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Newark Liberty Airport to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Newark Liberty Airport to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Newark Liberty Airport to Idaho is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Newark Liberty Airport to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Newark Liberty Airport to Idaho with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Newark Liberty Airport to Idaho?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Newark Liberty Airport to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Newark to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Newark to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Newark to Idaho? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12517 reviews
8.5Crew
8.1Boarding
7.0Entertainment
7.8Comfort
7.1Food
Airline reviews

Other than delaying take off by an hour, the flight was smooth. Crew were kind and supportive, and made sure we were always considered as a priority.

10.0 ExcellentVenge, Jun 2026
EWR - SEA
Read more Alaska Airlines reviews

Other than delaying take off by an hour, the flight was smooth. Crew were kind and supportive, and made sure we were always considered as a priority.

I was very impressed at how Alaska Airlines handles people with medical needs.

Terrible experience with an extremely obese passenger seated directly behind me - who snored and gagged so loudly, even throughout takeoff, that no one within ten rows could have gotten any rest even with earplugs! I get that this poor person has a serious health issue, and that Alaska (maybe) had no way to prepare in advance (though he did occupy two seats). Still there must be a way to take a six-hour flight without feeling like I'm next to a roaring grizzly bear.

Flight was delayed by 3 hrs. Forcing missed connection and overnight stay. Terrible.

nothing for delays and refuse service.when asked for the second flight. the first is good though

The front desk attendant was rude to everyone in an absolutely careless way.

We left late; had to land in Minneapolis unscheduled to refuel and then landed in interior instead of lax at 2am......

I understand it’s their right, but when two of my party missed the flight after checking in it seemed insensitive to cancel all of their subsequent flights and for us to lose the extra seating despite having paid for it @ the very least we could’ve been refunded for the checked bags that we prepaid for and never used.

Every thing is on time, boarding, landing nice and smooth. But No tv? No food for 6 hours flight?

First Class seats had no more legroom then Premium Economy. There was no working WiFi or entertainment. I would have rather paid $400 more and flown on United for the 6 hours from EWR to SFO.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

Transparency from pilots, quick boarding and exiting the plane, staff greeted to each and everyone,

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

Much better than Spirit. I was please by the easy fast check in and boarding

The attendant on board was amazing. She should be doing business/first international long haul.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

Leave on time. We waited on the plane for hour hours and it was hot and smelly

Flying in the United States with the major airlines has become so underwhelming. A 2-3hr flight in most other parts of the world with the major carriers of the area comes with newer, CLEANER aircraft and significantly better in flight service in terms of both staff attitude and a actual meal service.

Wifi was spotty. Tray table was very dirty when I sat down.

Flight was extremely hot and they made us check our bags when the space was nowhere near full

Same plane as RDU to LGA — internet not working. Pilot issue of some sort at end of prior flight - I was on same plane for my connection. Late/delayed —

My flight from LGA was cancelled and my rebooked flight from JFK was delayed numerous times. I will now be getting home after 2am.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

Everything you need to know for your flight from Newark to Idaho

Information on your arrival and departure airports