$154 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 8/24. 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.
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Cheap Flights from Newark to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$307
Idaho Falls
Idaho Falls1 stop$359
Hailey
Hailey1 stop$401
Lewiston
Lewiston2 stops$2,292
Twin Falls
Twin Falls1 stop$708
Pocatello
Pocatello2 stops$1,104
Spokane
Spokane1 stop$313
Boise
Boise1 stop$307
Idaho Falls
Idaho Falls1 stop$359
Hailey
Hailey1 stop$401
Lewiston
Lewiston2 stops$2,292
Twin Falls
Twin Falls1 stop$708
Pocatello
Pocatello2 stops$1,104
Spokane
Spokane1 stop$313

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

Wed, Oct 7 - Sat, Oct 10
Delta Logo
6:00 am - 12:35 pm
EWR
-
BOI
8h 35m
1 stop
Delta Logo
1:06 pm - 11:26 pm
BOI
-
EWR
8h 20m
1 stop
$307Delta
Wed, Sep 30 - Mon, Oct 5
Delta Logo
6:45 pm - 11:59 pm
EWR
-
BOI
7h 14m
1 stop
Delta Logo
11:10 pm - 9:23 am
BOI
-
EWR
8h 13m
1 stop
$307Delta
Sat, Oct 24 - Sat, Oct 31
United Airlines Logo
6:00 am - 11:28 am
EWR
-
BOI
7h 28m
1 stop
United Airlines Logo
12:37 pm - 11:59 pm
BOI
-
EWR
9h 22m
1 stop
$307United Airlines
Wed, Nov 4 - Wed, Nov 4
Alaska Airlines Logo
7:17 am - 2:27 pm
EWR
-
BOI
9h 10m
1 stop
Alaska Airlines Logo
7:54 pm - 5:58 am
BOI
-
EWR
8h 04m
1 stop
$307Alaska Airlines
Fri, Nov 6 - Mon, Nov 9
Alaska Airlines Logo
4:00 pm - 11:51 pm
EWR
-
BOI
9h 51m
1 stop
Alaska Airlines Logo
6:33 am - 5:01 pm
BOI
-
EWR
8h 28m
1 stop
$307Alaska Airlines
Thu, Aug 27 - Fri, Aug 28
American Airlines Logo
6:50 am - 2:29 pm
EWR
-
BOI
9h 39m
1 stop
American Airlines Logo
5:19 pm - 6:00 am
BOI
-
EWR
10h 41m
1 stop
$307American Airlines
Wed, Aug 26 - Fri, Aug 28
American Airlines Logo
6:50 am - 2:29 pm
EWR
-
BOI
9h 39m
1 stop
American Airlines Logo
5:19 pm - 6:00 am
BOI
-
EWR
10h 41m
1 stop
$307American Airlines
Wed, Sep 9 - Sat, Sep 12
United Airlines Logo
7:00 am - 1:54 pm
EWR
-
SUN
8h 54m
1 stop
United Airlines Logo
7:50 am - 6:01 pm
SUN
-
EWR
8h 11m
1 stop
$401United Airlines
Wed, Aug 19 - Thu, Aug 27
Multiple Airlines Logo
5:55 am - 9:22 am
EWR
-
GEG
30h 27m
2 stops
Multiple Airlines Logo
4:54 pm - 10:42 am
GEG
-
EWR
14h 48m
1 stop
$533Multiple Airlines
Thu, Aug 20 - Sun, Aug 30
Multiple Airlines Logo
10:00 am - 3:08 pm
EWR
-
GEG
8h 08m
1 stop
Multiple Airlines Logo
5:20 pm - 1:03 am
GEG
-
EWR
28h 43m
2 stops
$552Multiple 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 November.

Flight prices are below average for this route right now.

Flights to Idaho from Newark Airport usually cost between $418 and $637 in November.
The lowest price found in the past 5 days was $307 on Delta (Nov 4-Nov 7).

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 $339 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $828 and $672 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 season

January

Cheapest flight

$154
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 5% 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 12726 reviews
8.5Crew
7.8Comfort
7.0Food
7.0Entertainment
8.1Boarding
Airline reviews

No screen to see where we were at and no tv.

10.0 ExcellentAnonymous, Jun 2026
EWR - PDX
Read more Alaska Airlines reviews

No screen to see where we were at and no tv.

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.

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.

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

The first class flight attendant was awful to everyone. Very rude; no customer service. She should not be working in first class.

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

The woman in seat 1A was allowed to bring a dachshund dog onboard. It smelled terrible and the odor wafted throughout the first class cabin. This was clearly not a service dog and should be prohibited. I paid for the highest class of service, and this was a disservice. Why is Delta allowing this? I may reconsider my future flight choices.

Flights were terribly delayed. I was at At,anta Airport for over 4 hours waiting for my connection.

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Gate crew helping to scan tickets was a little short tempered with customers. Flight crew was very friendly, welcoming , and provided excellent service on board.

Our flight gor canceled and there was no one to help us but told us to scan the qr code and fill the forms on-line. Very poor service especially we are tourists traveling to Washington DC for the 1st time.

Flight was delayed 5 hours. Updates kept changing. Sears were extremely cramped. Very little leg room. Flight attendant was rushing through with drinks and hit me in the knee either the cart and didn’t apologize. They gave a 15 dollar voucher in airport which doesn’t buy. Much and it was so late that choices were limited.

It's fine but Newark to Nashville was too long

The flight was delayed because they closed several flight ways because of air shows, fire works, etc.

I was exhausted from a long day. The flight was smooth. The first flight during my 3 week travel that took off on time.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

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.

The departure and arrival was on time. The fact that I could load my boarding tickets on the American airlines app.

I am very appreciative of the help provided to me by Dennis and Whitney. I had lost my phone at EWR airport and they were very kind in assisting me. This included advice on how to file a report and also helping me connect with family. The pilot was also great about keeping passengers updated on the flight progress with regular communications over the system.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

This was a horrible experience. For a first class experience, my chair was held together by 3M tape - and I have a photo. The crew weren’t very attentive, somewhat dismissive and forgot my drink and snack, the chair reclined about 3 inches on a 6-hour cross country flight. I was also not informed that there was no lounge available in Newark airport because of renovations, so all around this was one of the worst experiences and I would actively avoid both American and Alaska Air going forward.

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

It was so bad it will be my last. Connecting flight gate agent closed the door in my face when i told her my husband is 30 seconds away (and we were running close/late because the preceding AA flight was slightly delayed. We had to be rebooked on a non-direct flight with an overnight layover in Phoenix. This is the worst experience ever and for no fault of our own. The flight we were trying to get on would not have been late if the gate agent allowed my husband to get there. It was senseless, cruel and very upsetting. I don’t understand why we were subjected to this.

Flight attendant walked away once they landed and we were forced to wait another hour after an already 3hr delay.

The departing flight from Newark to Charlotte was fine. It was the returning flight from Charlotte to Newark that was awful. We had scheduled an 8:35pm return flight time. We got delayed TEN times all the way to 5am in the morning! We were told over 4 different excuses as to why the flight kept getting delayed. First it was the flight crew needed to rest, then it was something technical with the plane, then it was something with air traffic control, and finally it was because they couldn’t find a captain and had to wait until the morning so the captain could get some rest. It was terrible sleeping overnight in the airport. They offered a $12 meal voucher. That was it! And the only place open in the middle of the night was Dunkin’ Donuts who didn’t even accept the voucher. They should have cancelled the flight much earlier on in the evening instead of just stringing us along hour by hour with more delays. Not professional and unacceptable. There was no refund for inconvenience. I probably will not be flying American Airlines again.

Checked in the minute I was allowed and still wound up in group 8 for boarding.

The flight was delayed which was disappointing. There was no pre takeoff refreshment in first, as we had to wait around an hour in our seats before take off that was disappointing too. The inflight entertainment/wifi did not work, and the crew were slow to offer drinks in flight

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

Information on your arrival and departure airports