£304 Find Cheap Flights from London to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Idaho departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Idaho, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Idaho, as well as popular online travel agencies
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Cheap Flights from London to Idaho

Cheapest return prices found by our users on KAYAK in the last 72 hours
Boise
Boise2 stops£601
Idaho Falls
Idaho Falls2 stops£787
Boise
Boise2 stops£601
Idaho Falls
Idaho Falls2 stops£787

Book Cheap London to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Idaho

Tue, 14 Apr - Wed, 22 Apr
Multiple Airlines Logo
08:45 - 23:02
LHR
-
BOI
21h 17m
2 stops
Multiple Airlines Logo
10:45 - 10:10
BOI
-
LHR
16h 25m
1 stop
£601Multiple Airlines
Tue, 14 Apr - Wed, 22 Apr
Multiple Airlines Logo
08:20 - 21:26
LHR
-
BOI
20h 06m
1 stop
Multiple Airlines Logo
10:45 - 15:05
BOI
-
LHR
21h 20m
1 stop
£616Multiple Airlines
Mon, 20 Apr - Mon, 27 Apr
Lufthansa Logo
10:50 - 23:02
LHR
-
BOI
19h 12m
2 stops
Lufthansa Logo
12:04 - 08:30
BOI
-
LHR
13h 26m
1 stop
£624Lufthansa
Mon, 27 Apr - Mon, 4 May
Lufthansa Logo
08:30 - 21:11
LHR
-
GEG
20h 41m
2 stops
Lufthansa Logo
12:25 - 11:10
GEG
-
LHR
14h 45m
1 stop
£625Lufthansa
Wed, 9 Sep - Sun, 13 Sep
United Airlines Logo
08:40 - 22:22
LHR
-
GEG
21h 42m
2 stops
United Airlines Logo
12:57 - 07:25
GEG
-
LHR
34h 28m
1 stop
£636United Airlines
Tue, 5 May - Tue, 12 May
United Airlines Logo
08:45 - 21:40
LHR
-
GEG
20h 55m
2 stops
United Airlines Logo
12:25 - 11:10
GEG
-
LHR
14h 45m
1 stop
£637United Airlines
Tue, 5 May - Tue, 12 May
Virgin Atlantic Logo
17:10 - 22:40
LHR
-
IDA
36h 30m
2 stops
Virgin Atlantic Logo
15:16 - 07:15
IDA
-
LHR
32h 59m
2 stops
£787Virgin Atlantic
Sun, 3 May - Sun, 10 May
KLM Logo
11:45 - 22:40
LHR
-
IDA
17h 55m
2 stops
KLM Logo
18:54 - 10:00
IDA
-
LHR
32h 06m
1 stop
£797KLM
Sun, 3 May - Sun, 10 May
KLM Logo
10:55 - 18:17
LHR
-
IDA
14h 22m
1 stop
KLM Logo
18:54 - 10:00
IDA
-
LHR
32h 06m
1 stop
£807KLM
Tue, 5 May - Tue, 12 May
Virgin Atlantic Logo
10:55 - 22:40
LHR
-
IDA
18h 45m
1 stop
Virgin Atlantic Logo
15:16 - 11:00
IDA
-
LHR
12h 44m
1 stop
£813Virgin Atlantic
Booking Insights

KAYAK's insights & trends for London to Idaho flights

Get data-powered insights and trends into flights from London to Idaho to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from London to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Idaho is January, when tickets cost £563 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is £1,161 and £885 respectively.

Good to know - Cheap tickets from London to Idaho

Low seasonJanuary
Cheapest flight£304
Best time to beat the crowds (22% less expensive on average)
Most popular time to fly (23% more expensive on average)
Flight from London Gatwick Airport to Spokane

FAQs - booking Idaho flights

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to Idaho is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London 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 London 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 London to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from London to Idaho

 
See real verified KAYAK customer reviews for airlines flying from London to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London 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.
7.8
KLMOverall score based on 1477 reviews
7.8Boarding
7.1Entertainment
7.6Comfort
7.3Food
8.4Crew
Airline reviews

It was really nice journey i personally recommend klm flight

10.0 Excellentsmit, Mar 2026
AMD - BLR
Read more KLM reviews

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Terrible last row seats many seats available but no offer to move to better seat

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

I could not get the wifi to work. But like the screen on the seats.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

The head flight attendant made the trip excellent. He was very accommodating.

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

The economy seats on the 777 was not as cramped as I had feared, but the food was terrible.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Waiting area on top of stairs before Boarding the bus wasn’t great. Took a long time to load the bus to gate.

The real reason why the flying experience with Icelandair ---was mediocre was because of not being able to enter DC airspace yesterday evening. This obviously was out of your control and do realize this is a safety issue. I did notice---that everything was being done to get us to Washington Dulles and we did arrive at Dulles SAFELY with just a 4 hour delay. Thank you!

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

How about changing the personal out to more friendly human beings? This team was pretty arrogant. No fun!!

Everything could have been better. What needed to be wrong with United went wrong

Excellent service. The crew goes above their way to make the customer comfortable.

It was good. The seats in economy weren’t bad

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Excellent service; they helped me reschedule so I can fly in an earlier flight

Wonderful staff. The boarding process can be improved a little better by adequate prior communication but all in all they did fine. However the boarding gate was quite unfreindly to elderly and who needs help with sevral stairs.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Very good. Comfortable and I felt well taken care of from start to finish

Everything you need to know for your flight from London to Idaho

Cabin class types available on flights to Idaho

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