$148 Find Cheap Flights from New Hampshire to Idaho

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Useful Info
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Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$148
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Boston to Spokane

FAQs for booking flights from New Hampshire to Idaho

  • How does KAYAK find such low prices on flights from New Hampshire 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 New Hampshire to Idaho.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from New Hampshire 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 New Hampshire 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 New Hampshire 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 New Hampshire 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 New Hampshire to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Idaho?

    Based on KAYAK data, the cheapest day to fly to Idaho is Saturday where round-trip tickets can be as cheap as $560. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are $901 on average.

  • What is the cheapest time of day to fly to Idaho?

    The cheapest time of day to fly to Idaho is generally in the afternoon, when round-trip flights cost $614 on average. The most expensive time of day to fly to Idaho is generally in the morning, which is peak travel time and where the average cost of a ticket is $814.

  • How far in advance should I book a flight from New Hampshire to Idaho?

    To get a below average price on the flight from New Hampshire to Idaho, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

  • How long is the flight to Idaho?

    An average nonstop flight from New Hampshire to Idaho takes 12h 39m, covering a distance of 2134 miles. The shortest route is Portland (PWM) to Jackson (JAC) with an average flight time of 7h 04m.

  • What are the most popular destinations in Idaho?

    Based on KAYAK flight searches, the most popular destination is Jackson (48% of total searches to Idaho). The next most popular destinations are Boise (25%) and Spokane (19%). Searches for flights to Idaho Falls (6%) and to Lewiston (1%) are also popular.

Top airline flying from New Hampshire to Idaho

Need help choosing which airline to fly with from New Hampshire 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.
7.2
American AirlinesOverall score based on 10000 reviews
8.0Crew
6.5Food
7.5Boarding
6.9Entertainment
7.2Comfort
Airline reviews

Pitch was very small. Knees were on the seat back in front of me.

8.0 ExcellentAnonymous, May 2025DCA - MSY
Read more American Airlines reviews

Pitch was very small. Knees were on the seat back in front of me.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

Book cheap flights from New Hampshire to Idaho

Recent round-trip flight deals

6/4Wed
1 stopAlaska Airlines
11h 06mBOS-GEG
6/7Sat
1 stopAlaska Airlines
10h 21mGEG-BOS
$271
5/28Wed
1 stopAlaska Airlines
11h 06mBOS-GEG
6/4Wed
1 stopAlaska Airlines
10h 21mGEG-BOS
$296
7/1Tue
1 stopDelta
7h 48mBOS-GEG
7/29Tue
1 stopDelta
9h 16mGEG-BOS
$297
8/5Tue
1 stopUnited Airlines
7h 33mBOS-BOI
8/19Tue
1 stopUnited Airlines
9h 10mBOI-BOS
$298
5/28Wed
2 stopsAmerican Airlines
10h 53mBOS-GEG
6/4Wed
1 stopAmerican Airlines
8h 45mGEG-BOS
$302
7/15Tue
1 stopDelta
8h 10mBOS-BOI
7/16Wed
1 stopDelta
9h 47mBOI-BOS
$307
5/27Tue
1 stopUnited Airlines
11h 47mBOS-GEG
5/30Fri
1 stopUnited Airlines
7h 16mGEG-BOS
$307
9/16Tue
1 stopAmerican Airlines
7h 58mBOS-JAC
9/24Wed
1 stopAmerican Airlines
6h 45mJAC-BOS
$317
6/4Wed
1 stopHawaiian Airlines
12h 11mBOS-BOI
6/9Mon
1 stopHawaiian Airlines
8h 21mBOI-BOS
$324
7/10Thu
1 stopHawaiian Airlines
11h 34mBOS-BOI
7/15Tue
1 stopHawaiian Airlines
10h 48mBOI-BOS
$351

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Recent one-way flight deals

5/7Wed
1 stopAlaska Airlines
10h 26mBOS-GEG
$148
5/14Wed
1 stopAmerican Airlines
9h 52mBOS-GEG
$149
5/25Sun
1 stopHawaiian Airlines
12h 11mBOS-BOI
$153
5/14Wed
2 stopsAmerican Airlines
11h 24mBOS-GEG
$154
5/29Thu
1 stopHawaiian Airlines
9h 15mBOS-BOI
$157
10/15Wed
2 stopsUnited Airlines
10h 05mBOS-BOI
$159
5/12Mon
1 stopAlaska Airlines
21h 08mBOS-BOI
$163
6/17Tue
2 stopsDelta
14h 14mBOS-JAC
$176
10/14Tue
2 stopsUnited Airlines
10h 05mBOS-BOI
$179
6/24Tue
1 stopDelta
10h 15mBOS-BOI
$180

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Last minute flights from New Hampshire to Idaho

Last minute flight, train and bus deals

5/3Sat
multi-stopAlaska Airlines
10h 46mBOS-BOI
5/13Tue
multi-stopAlaska Airlines
13h 35mBOI-BOS
$520
5/3Sat
multi-stopAlaska Airlines
10h 01mBOS-BOI
5/13Tue
multi-stopAlaska Airlines
11h 50mBOI-BOS
$563
5/3Sat
multi-stopAmerican Airlines
8h 56mBOS-BOI
5/13Tue
multi-stopAmerican Airlines
8h 09mBOI-BOS
$564
5/3Sat
multi-stopAlaska Airlines
15h 03mBOS-BOI
5/13Tue
multi-stopAlaska Airlines
21h 38mBOI-BOS
$587
5/3Sat
multi-stopUnited Airlines
12h 00mBOS-BOI
5/10Sat
multi-stopUnited Airlines
9h 03mBOI-BOS
$626
5/3Sat
multi-stopUnited Airlines
10h 52mBOS-BOI
5/13Tue
multi-stopUnited Airlines
13h 27mBOI-BOS
$631
5/5Mon
multi-stopUnited Airlines
11h 37mBOS-JAC
5/12Mon
multi-stopUnited Airlines
13h 00mJAC-BOS
$703
5/4Sun
multi-stopDelta
8h 04mBOS-JAC
5/8Thu
multi-stopDelta
9h 30mJAC-BOS
$777
5/4Sun
multi-stopDelta
8h 49mBOS-JAC
5/8Thu
multi-stopDelta
9h 30mJAC-BOS
$782
5/3Sat
multi-stop
24h 29mBOS-SUN
5/7Wed
multi-stop
23h 45mSUN-BOS
$1,482

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Everything you need to know for your flight to Idaho

Cabin class types available on flights to New Hampshire

Cabin classes available on flights to New Hampshire. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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