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£471+ Cheap flights 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
— BOI
19 Jun — 26 Jun1
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
Explore the most affordable flight options available to Idaho. Find the lowest fares based on data from user searches, with prices last updated on 20 May 2026.

Wed 30/1212:00
LHR
-
BOI
2 stops18h 06m
Lufthansa
Wed 13/112:29
BOI
-
LHR
1 stop34h 26m
Lufthansa
Deal found 16/5£658
Mon 21/907:30
LHR
-
BOI
2 stops17h 28m
United Airlines
Tue 6/1005:00
BOI
-
LHR
1 stop21h 40m
United Airlines
Deal found 19/5£660
Tue 22/909:30
LHR
-
BOI
2 stops19h 07m
United Airlines
Mon 5/1017:44
BOI
-
LHR
1 stop11h 41m
United Airlines
Deal found 19/5£683
Mon 21/906:30
LHR
-
BOI
2 stops22h 07m
Lufthansa
Sun 4/1014:31
BOI
-
LHR
2 stops33h 14m
Lufthansa
Deal found 19/5£684
Tue 22/915:05
LHR
-
BOI
2 stops31h 26m
Air Canada
Mon 5/1017:44
BOI
-
LHR
2 stops29h 46m
Air Canada
Deal found 19/5£686
Wed 23/909:30
LHR
-
BOI
2 stops19h 07m
Air Canada
Wed 7/1006:25
BOI
-
LHR
2 stops17h 05m
Air Canada
Deal found 19/5£689
Tue 22/915:05
LHR
-
BOI
2 stops27h 03m
Air Canada
Tue 6/1017:44
BOI
-
LHR
2 stops29h 51m
Air Canada
Deal found 19/5£689
Wed 23/909:30
LHR
-
BOI
2 stops19h 07m
Air Canada
Tue 6/1017:44
BOI
-
LHR
2 stops29h 51m
Air Canada
Deal found 19/5£692
Sat 21/1109:00
LHR
-
GEG
2 stops22h 38m
Multiple Airlines
Sat 28/1107:02
GEG
-
LHR
1 stop20h 13m
Multiple Airlines
Deal found 16/5£705
Sat 21/1109:00
LHR
-
GEG
2 stops22h 38m
United Airlines
Sat 28/1107:02
GEG
-
LHR
1 stop20h 13m
United Airlines
Deal found 17/5£712
Fri 18/911:25
LHR
-
BOI
1 stop13h 33m
United Airlines
Wed 7/1017:44
BOI
-
LHR
1 stop11h 51m
United Airlines
Deal found 19/5£713
Tue 22/915:05
LHR
-
BOI
2 stops27h 03m
Air Canada
Sat 3/1017:44
BOI
-
LHR
2 stops29h 46m
Air Canada
Deal found 19/5£716

Find flights to Idaho

Browse one-way and return flights deals to Idaho on Cheapflights. Flight deals are based on user searches and were last updated on 20 May 2026
Explore Idaho
Flights to Boise
Flights to Idaho Falls
Flights to Hailey

Find flight deals to Idaho

Find the latest flights to Idaho in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 20 May 2026.

Return from

£660

One-way from

£431

Popular in

December

Cheapest in

January

Average price

£677
United Airlines
  • United Airlines
  • 21/9-7/10
  • 4 total stops
  • 32h 43m total
  • London to Boise
Search Deals
30/9
  • 30/9
  • 3 total stops
  • 34h 43m total
  • London to Idaho
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£67 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£40 potential savings vs. average return price).
Search Deals
Average for return flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Idaho that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 20 May 2026.
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 - BOI

LHRBOI

London Heathrow

Wed 23/9

11:25-17:58

1 stop13h 33m

Boise Air Term. Gowen Fld

Sun 4/10

19:05-07:25

1 stop29h 20m

£683

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 22/9

14:50-23:03

1 stop15h 13m

Boise Air Term. Gowen Fld

Tue 6/10

17:44-12:25

1 stop11h 41m

£683
Fastest return journey

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 23/9

11:25-17:58

1 stop13h 33m

Boise Air Term. Gowen Fld

Sat 3/10

17:44-12:25

1 stop11h 41m

£713

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 24/6

07:25-21:40

2 stops21h 15m

Boise Air Term. Gowen Fld

Wed 30/9

06:25-07:15

2 stops17h 50m

£723

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 19/9

11:25-17:58

1 stop13h 33m

Boise Air Term. Gowen Fld

Fri 2/10

17:44-12:25

1 stop11h 41m

£743

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 27/6

18:00-11:27

2 stops24h 27m

Boise Air Term. Gowen Fld

Thu 24/9

08:15-10:10

2 stops18h 55m

£749

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 23/6

12:00-22:37

2 stops17h 37m

Boise Air Term. Gowen Fld

Sun 5/7

19:05-10:10

2 stops32h 05m

£768

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 22/6

11:25-21:35

1 stop17h 10m

Boise Air Term. Gowen Fld

Mon 6/7

14:41-12:25

1 stop14h 44m

£780

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 22/6

10:25-21:05

2 stops18h 40m

Spokane

Mon 6/7

06:00-07:25

1 stop17h 25m

£800

LondonBoise

LCY - BOI

LCYBOI

London City

Tue 23/6

09:15-22:56

2 stops20h 41m

Boise Air Term. Gowen Fld

Sun 5/7

12:38-17:55

2 stops46h 17m

£814

Flights are sorted by cheapest return flights first.

Deals found on 19/5

Showing 1-10 of 31 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
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 to Idaho

How long is the flight to Idaho?

On average, a flight from London to Idaho takes 18 hours 1 minute. 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 £544
Virgin Atlantic
Virgin Atlantic
From £589
Lufthansa
Lufthansa
From £509
KLM
KLM
From £702

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

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

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 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).

When is the best time to book a flight to Idaho?

To ensure you get the cheapest price possible for a flight to Idaho, you should look to book at least 75 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Destination popularity is based on the amount of flight searches to Idaho in the last few years. This data was updated on 20 May 2026.
The most popular places in Idaho to fly to are Boise, Idaho Falls, Hailey, Twin Falls and Lewiston.

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 20 May 2026.
Check out reviews from past customers who have flown United Airlines,Virgin Atlantic, andIcelandair 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
9,737 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,737 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Virgin Atlantic
7.4
Good
688 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Icelandair
7.0
Good
656 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Lufthansa
6.8
Okay
8,014 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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, Edinburgh Turnhouse offers the quickest one-way flight (14 hours 12 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

Browse thousands of different options on Cheapflights for your next trip

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Find flights to Idaho cities and airports

Select your preferred flight destination in Idaho from the list below.
Flights to Boise
Flights to Idaho Falls
Flights to Hailey
Flights to Lewiston
Flights to Twin Falls
Flights to Pocatello

Fly with Cheapflights

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How does Cheapflights help users find flights to Idaho?

Cheapflights helps you search for flights to Idaho via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets to Idaho?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Idaho.

Can Cheapflights find flights to Idaho with no change fees?

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

Can Cheapflights notify me if prices for flights to Idaho become cheaper?

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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