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$100+ Cheap flights from New Hampshire to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — BOI
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from New Hampshire to Idaho

Keep the following information in mind while searching for New Hampshire to Idaho flight deals. Data was last updated June 12, 2025.

Round-trip from

$199
(American Airlines)

One-way from

$100
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$501
From New Hampshire to Idaho
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One-way flight from New Hampshire to Idaho
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from New Hampshire to Idaho

Cheapest flights from New Hampshire to Idaho
Explore the most affordable flight options available from New Hampshire to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:03 amBOS - GEG
1 stop8h 41mAmerican Airlines
Tue 9/231:30 pmGEG - BOS
1 stop7h 29mAmerican Airlines
Deal found 6/11$199
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/59:20 amBOS - GEG
1 stop10h 31mAlaska Airlines
Sun 9/77:44 pmGEG - BOS
1 stop9h 16mAlaska Airlines
Deal found 6/10$210
This Hawaiian Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:00 amBOS - GEG
1 stop8h 44mHawaiian Airlines
Mon 9/157:44 pmGEG - BOS
1 stop9h 16mHawaiian Airlines
Deal found 6/9$244
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:10 pmBOS - GEG
1 stop8h 50mSouthwest
Mon 8/2512:10 pmGEG - BOS
1 stop6h 55mSouthwest
Deal found 6/11$248
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/126:00 pmBOS - GEG
1 stop8h 12mDelta
Tue 7/155:35 pmGEG - BOS
1 stop10h 05mDelta
Deal found 6/10$269
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/139:20 amBOS - BOI
1 stop9h 58mAlaska Airlines
Sat 9/138:46 pmBOI - BOS
1 stop9h 14mAlaska Airlines
Deal found 6/10$279
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/66:00 amBOS - BOI
1 stop8h 50mHawaiian Airlines
Sat 9/138:46 pmBOI - BOS
1 stop9h 14mHawaiian Airlines
Deal found 6/12$284
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:10 amBOS - BOI
1 stop10h 53mDelta
Tue 9/1610:38 amBOI - BOS
1 stop11h 06mDelta
Deal found 6/10$285
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/282:33 pmBOS - BOI
1 stop9h 07mAmerican Airlines
Sun 8/311:07 pmBOI - BOS
1 stop8h 52mAmerican Airlines
Deal found 6/11$291
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:00 amPWM - BOI
1 stop8h 32mAmerican Airlines
Mon 9/86:59 amBOI - PWM
1 stop8h 46mAmerican Airlines
Deal found 6/11$297
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:40 pmBOS - JAC
1 stop9h 19mAmerican Airlines
Thu 9/113:20 pmJAC - BOS
1 stop6h 39mAmerican Airlines
Deal found 6/11$317
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/65:35 amBOS - BOI
2 stops11h 15mSouthwest
Sat 9/135:10 amBOI - BOS
1 stop6h 55mSouthwest
Deal found 6/10$320

Cheapflights Fare Finder

Customize your flight search to find flights from New Hampshire to Idaho 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from New Hampshire to Idaho that are best for you.

Fly from

New Hampshire

Fly to

Idaho

Route

Depart

Return

Price

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Sat 9/20

7:03 am-12:44 pm

1 stop8h 41m

Spokane

Tue 9/23

1:30 pm-11:59 pm

1 stop7h 29m

$199

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Fri 9/5

9:20 am-4:51 pm

1 stop10h 31m

Spokane

Sun 9/7

7:44 pm-8:00 am

1 stop9h 16m

$210

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Tue 9/9

6:00 am-11:44 am

1 stop8h 44m

Spokane

Mon 9/15

7:44 pm-8:00 am

1 stop9h 16m

$244

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Thu 8/21

5:10 pm-11:00 pm

1 stop8h 50m

Spokane

Mon 8/25

12:10 pm-10:05 pm

1 stop6h 55m

$248

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Sat 7/12

6:00 pm-11:12 pm

1 stop8h 12m

Spokane

Tue 7/15

5:35 pm-6:40 am

1 stop10h 05m

$269

BostonSpokane

BOS - GEG

BOSGEG

Boston Logan Intl

Fri 7/11

6:07 am-10:56 am

1 stop7h 49m

Spokane

Fri 7/11

6:25 pm-6:01 am

1 stop8h 36m

$272

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Sat 9/13

9:20 am-5:18 pm

1 stop9h 58m

Boise Air Term. Gowen Fld

Sat 9/13

8:46 pm-8:00 am

1 stop9h 14m

$279

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Sat 9/6

6:00 am-12:50 pm

1 stop8h 50m

Boise Air Term. Gowen Fld

Sat 9/13

8:46 pm-8:00 am

1 stop9h 14m

$284

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Wed 9/10

6:10 am-3:03 pm

1 stop10h 53m

Boise Air Term. Gowen Fld

Tue 9/16

10:38 am-11:44 pm

1 stop11h 06m

$285

BostonBoise

BOS - BOI

BOSBOI

Boston Logan Intl

Thu 8/28

2:33 pm-9:40 pm

1 stop9h 07m

Boise Air Term. Gowen Fld

Sun 8/31

1:07 pm-11:59 pm

1 stop8h 52m

$291

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 59 results
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Best time to book a flight from New Hampshire to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from New Hampshire with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from New Hampshire to Idaho

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated June 12, 2025.
To help decide which airline to fly from New Hampshire to Idaho, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from New Hampshire to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from New Hampshire to Idaho one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $100. Delta flights start at $140 while deals on Alaska Airlines start at $148 one-way.

  • Can I find deals for flights from New Hampshire to Idaho that include hotel bookings?

    Yes. In addition to deals on New Hampshire to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Hampshire to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Hampshire to Idaho.

  • Can I find deals for business class flights from New Hampshire to Idaho?

    Yes. Cheapflights offers flight deals from New Hampshire to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New Hampshire to Idaho?

    Currently, October is the cheapest month in which you can book a flight from New Hampshire to Idaho (average of $314). Flying from New Hampshire to Idaho in June is currently the most expensive (average of $395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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