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£372+ Cheap flights to Idaho

— BOI
9 Oct — 16 Oct1
1 adult
1 adult, Economy, 0 bags

Flights to Idaho in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Idaho

Thu 15/1011:45 -
2 stops19h 14m
Tue 27/1014:06 -
1 stop14h 34m
Deal found 5/9£546
Thu 15/1011:45 -
2 stops20h 10m
Wed 28/1013:38 -
1 stop14h 02m
Deal found 5/9£547
Fri 23/1017:45 -
1 stop14h 10m
Wed 28/1007:20 -
1 stop20h 20m
Deal found 6/9£593
Fri 2/1006:40 -
2 stops20h 10m
Fri 9/1013:00 -
3 stops21h 30m
Deal found 4/9£595
Thu 15/1017:00 -
1 stop13h 59m
Tue 27/1014:06 -
1 stop16h 14m
Deal found 5/9£656
Mon 14/1212:20 -
1 stop16h 51m
Tue 29/1213:21 -
1 stop13h 19m
Deal found 7/9£665
Tue 10/1114:30 -
2 stops36h 11m
Tue 24/1107:00 -
1 stop20h 15m
Deal found 8/9£667
Mon 21/919:30 -
2 stops34h 04m
Tue 6/1010:34 -
2 stops24h 06m
Deal found 8/9£677
Tue 15/1212:20 -
1 stop16h 51m
Sun 27/1213:21 -
1 stop13h 19m
Deal found 6/9£682
Fri 30/1014:45 -
1 stop15h 14m
Tue 3/1120:59 -
1 stop32h 21m
Deal found 5/9£685
Mon 14/1212:20 -
1 stop14h 50m
Mon 4/116:56 -
1 stop12h 24m
Deal found 5/9£705
Fri 2/1017:00 -
1 stop29h 20m
Fri 9/1013:58 -
1 stop18h 07m
Deal found 4/9£709

Find flights to Idaho

Explore Idaho
Flights to Boise
Flights to Idaho Falls
Flights to Hailey

Find flight deals to Idaho

Return from

£546

One-way from

£345

Popular in

December

Cheapest in

January

Average price

£682
15/10-27/10
  • 15/10-27/10
  • 3 total stops
  • 33h 48m total
  • London to Boise
Search Deals
13/12-31/12
  • 13/12-31/12
  • 3 total stops
  • 57h 39m total
  • London to Idaho
Search Deals
Highest demand for flights based on searches. 2% potential increase in price.
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£31 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights to Idaho that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LGW London Gatwick - BOI Boise Air Term. Gowen Fld

LGWBOI

London Gatwick

Tue 3/11

09:35-13:30

2 stops34h 55m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£372
Fastest return journey

LondonIdaho Falls

LGW London Gatwick - IDA Idaho Falls Fanning Field

LGWIDA

London Gatwick

Mon 28/12

11:55-23:45

2 stops18h 50m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£524

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 30/10

14:45-23:59

1 stop15h 14m

Boise Air Term. Gowen Fld

Tue 3/11

05:43-12:20

2 stops23h 37m

£687

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Fri 2/10

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 9/10

13:58-15:05

1 stop18h 07m

£709

LondonHailey

LHR London Heathrow - SUN Hailey Sun Valley-Friedman

LHRSUN

London Heathrow

Thu 14/1

14:45-10:41

1 stop26h 56m

Hailey Sun Valley-Friedman

Mon 18/1

11:23-12:20

1 stop17h 57m

£722

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Thu 28/1

14:45-15:21

1 stop31h 36m

Idaho Falls Fanning Field

Mon 1/2

13:56-12:20

1 stop15h 24m

£722

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 21/11

14:45-23:59

1 stop16h 14m

Boise Air Term. Gowen Fld

Sat 28/11

21:59-12:20

1 stop31h 21m

£736

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Fri 11/12

14:45-21:11

1 stop14h 26m

Spokane

Tue 29/12

09:57-12:20

1 stop18h 23m

£740

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Mon 14/12

14:45-21:11

1 stop14h 26m

Spokane

Sun 27/12

06:00-12:20

1 stop22h 20m

£740

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 21/11

14:30-23:33

2 stops40h 03m

Boise Air Term. Gowen Fld

Sat 28/11

06:30-08:30

2 stops19h 00m

£756

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 32 resultsSorted by cheapest first
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Best time to book a flight to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight to Idaho

How long is the flight to Idaho?

On average, a flight from London to Idaho takes 19 hours 40 minutes. Flights to Idaho from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Idaho?

The most popular airlines flying from London to Idaho are United Airlines, Virgin Atlantic and Lufthansa.

United Airlines
United Airlines
From £520
Virgin Atlantic
Virgin Atlantic
From £553
Lufthansa
Lufthansa
From £503
Icelandair
Icelandair
From £697

What are the cheapest airlines that fly to Idaho?

The cheapest airlines flying from London to Idaho are Lufthansa, United Airlines and Virgin Atlantic.

Rainfall in Idaho by month

In terms of precipitation, rainfall in Idaho ranges from 5.0 - 41.0 inches per month. December is typically the wettest month, when rainfall can reach 41.0 mm. August is typically the driest time to visit Idaho when rainfall is around 5.0 mm.

Temperature in Idaho 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 24.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around -1.0 C).

What are the most popular places to fly to in Idaho?

The most popular places in Idaho to fly to are Boise, Idaho Falls, Hailey, Twin Falls and Lewiston.

Reviews of airlines servicing Idaho

Check out reviews from past customers who have flown Alaska Airlines,United Airlines, andVirgin Atlantic to the United States to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,894 reviews
Check prices

Overall

7.9

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
12,894 reviews
Alaska Airlines
7.9
Good
12,894 reviews
Check prices

Overall

7.9

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
United Airlines
7.4
Good
10,188 reviews
Alaska Airlines
7.9
Good
12,894 reviews
Check prices

Overall

7.9

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Virgin Atlantic
7.4
Good
694 reviews
Alaska Airlines
7.9
Good
12,894 reviews
Check prices

Overall

7.9

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Lufthansa
6.8
Okay
8,217 reviews
Alaska Airlines
7.9
Good
12,894 reviews
Check prices

Overall

7.9

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

FAQs about flying to Idaho

Idaho climate

The climate in Idaho varies from region to region. Winter in the north is cloudy, humid and rainy. In the south summers are dry but wet. Generally it can get very hot in summer. Winters can be very cold.

Getting around Idaho

The best way to get around the state is to hire a car, RV or camper.

Idaho’s largest urban centre is Boise and buses are offered around the city by the Boise Urban Stages. Daily bus services are also available in Ketchum.

What is good to know if travelling to Idaho?

  • Hot springs are synonymous with Idaho but the best known is the Lava Hot Springs in the south of the state. Here million-year old springs bubble at a temperature of 40 degrees Celsius soothing away tired limbs. There’s also an Olympic-sized swimming pool, massage services or tube rides on the river.
  • In Ketchum celebrate the city’s mining heritage at The Wagon Days festival in Ketchum. For four days celebrations take place around town, including a shoot-out, a fiddler’s contest, a rodeo and the Big Hitch Parade.
  • The City of Trees, Boise, is surrounded by greenery making it a very popular golfing destination with more than 20 golf courses in the area.
  • Head to the great outdoors and take a trip to Bone Road for some stunning scenery. More than a track this 60-mile span has some of the best views of Idaho landscapes than anywhere else, guaranteeing some great wildlife sightings of moose or deer.
  • Known by the locals as the “ghost town” Silver City outside Bois was once used as silver mine for the War Eagle Mountain. Today, photography workshops take place in its old houses and saloons

  • When is the best time to fly to Idaho?

    The weather in Idaho is split into four seasons but the length of them varies on the area.  Spring comes early and winter later to Boise. Temperatures in winter drop down to -1 to -6  degrees (C) and in summer go up to the mid-20s. Flooding can occur in April and May after the snow melts. Peak Season Idaho gets very busy and flights and accommodation are higher in summer from late May to mid-September. The ski season also means peak-season rates and conditions. The ski runs are open by late November and the season lasts until March or early April. Off Season The best time to find cheap flights to Idaho is from mid-September to October. During this time the weather is still warm. Spring is also a good time to visit.

  • Can I find cheaper flights to Idaho if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Idaho on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Idaho?

    Based on reviews from Cheapflights users, Lufthansa is rated the highest out of the airlines that fly to Idaho.

  • Where does the fastest flight to Idaho depart from?

    For those looking to save time traveling to Idaho, London offers the quickest one-way flight (13 hours 45 minutes).

  • Does Boise Air Term. Gowen Fld have car hire?

    Yes. Those touching down at Boise Air Term. Gowen Fld can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Boise Air Term. Gowen Fld?

    Yes. Boise Air Term. Gowen Fld has hotels nearby for those requiring accommodations. Layover Inn Boise Airport is the closest property to Boise Air Term. Gowen Fld (0.0 mi away from Boise Air Term. Gowen Fld).

See more FAQs

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Flights to Boise
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Yes, Cheapflights offers price alerts on Idaho flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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