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£438+ Cheap flights to Idaho

— BOI
18 Sep — 25 Sep1
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

Mon 28/919:30 -
2 stops29h 39m
Sat 3/1013:00 -
2 stops24h 40m
Deal found 17/8£589
Sat 3/1006:40 -
2 stops20h 35m
Sat 10/1011:18 -
2 stops23h 12m
Deal found 19/8£597
Thu 24/919:30 -
2 stops30h 09m
Sun 27/912:17 -
2 stops26h 23m
Deal found 19/8£629
Sat 7/1110:20 -
2 stops19h 44m
Wed 11/1116:14 -
2 stops34h 06m
Deal found 14/8£658
Wed 30/914:30 -
1 stop15h 30m
Wed 7/1007:20 -
1 stop19h 55m
Deal found 16/8£667
Tue 17/1106:35 -
2 stops20h 06m
Tue 24/1107:00 -
2 stops22h 30m
Deal found 17/8£676
Tue 22/914:50 -
1 stop14h 24m
Tue 29/913:05 -
2 stops23h 35m
Deal found 19/8£684
Wed 25/1115:20 -
2 stops26h 59m
Wed 13/108:20 -
1 stop16h 05m
Deal found 15/8£684
Wed 4/1111:35 -
2 stops31h 03m
Sun 8/1111:22 -
2 stops25h 58m
Deal found 16/8£684
Thu 1/1015:40 -
2 stops16h 19m
Thu 8/1012:42 -
2 stops17h 58m
Deal found 17/8£686
Tue 17/1114:30 -
2 stops36h 11m
Tue 24/1113:10 -
1 stop14h 05m
Deal found 17/8£688
Wed 25/1114:30 -
2 stops27h 49m
Thu 14/107:00 -
2 stops18h 30m
Deal found 15/8£689

Find flights to Idaho

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

Find flight deals to Idaho

Return from

£629

One-way from

£418

Popular in

December

Cheapest in

January

Average price

£1,081
Scandinavian Airlines
  • Scandinavian Airlines
  • 24/9-27/9
  • 4 total stops
  • 56h 32m total
  • London to Boise
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10/12
  • 10/12
  • 2 total stops
  • 33h 30m total
  • London to Idaho
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£9 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£32 potential savings vs. average return price).
Search Deals
Average for return flights in August 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

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 7/11

10:20-23:04

2 stops19h 44m

Boise Air Term. Gowen Fld

Wed 11/11

16:14-09:20

2 stops34h 06m

£659

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Wed 4/11

13:35-10:38

2 stops29h 03m

Spokane

Sun 8/11

16:10-09:40

1 stop33h 30m

£684

LondonSpokane

LGW London Gatwick - GEG Spokane

LGWGEG

London Gatwick

Thu 1/10

15:40-23:59

2 stops16h 19m

Spokane

Thu 8/10

12:42-14:40

2 stops17h 58m

£686

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Wed 9/12

07:40-23:38

2 stops23h 58m

Spokane

Sun 27/12

23:42-06:40

2 stops22h 58m

£744

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 18/9

13:05-15:31

2 stops33h 26m

Boise Air Term. Gowen Fld

Sat 26/9

17:30-12:25

1 stop11h 55m

£744

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Wed 30/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Wed 7/10

13:58-15:05

1 stop18h 07m

£767

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Wed 9/9

14:50-21:14

1 stop14h 24m

Spokane

Tue 15/9

15:54-12:25

1 stop12h 31m

£768
Fastest return journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 7/11

11:35-18:03

1 stop13h 28m

Boise Air Term. Gowen Fld

Wed 11/11

12:31-07:55

1 stop12h 24m

£784

LondonSpokane

LCY London City - GEG Spokane

LCYGEG

London City

Tue 8/9

06:45-11:55

2 stops37h 10m

Spokane

Tue 6/10

06:00-21:35

2 stops31h 35m

£798

LondonSpokane

LGW London Gatwick - GEG Spokane

LGWGEG

London Gatwick

Fri 4/9

15:40-23:59

2 stops16h 19m

Spokane

Fri 11/9

12:17-14:40

2 stops18h 23m

£798

Flights are sorted by cheapest return flights first.

Deals found on 15/8

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 17 hours 56 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 £519
Virgin Atlantic
Virgin Atlantic
From £551
Lufthansa
Lufthansa
From £502
Icelandair
Icelandair
From £695

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 United Airlines,Virgin Atlantic, andLufthansa 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.
United Airlines
7.4
Good
10,105 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
United Airlines
7.4
Good
10,105 reviews
United Airlines
7.4
Good
10,105 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Virgin Atlantic
7.4
Good
695 reviews
United Airlines
7.4
Good
10,105 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Lufthansa
6.8
Okay
8,202 reviews
United Airlines
7.4
Good
10,105 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!

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 (14 hours 24 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
Flights to Idaho Falls
Flights to Hailey
Flights to Lewiston
Flights to Twin Falls
Flights to Pocatello

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Users can book flights with no change fees policies with our dedicated filters. Book flights to Idaho flexibly with Cheapflights today.

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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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