Cheap flights from Idaho to London (LON) from $280

This is the cheapest one-way flight price, found on 9/20. Prices may vary by date and flight preferences.
BOI — LON
sep. 26 — oct. 31

How far in advance should I book a flight from Idaho to London?

To save on the cost of your flight from Idaho to London, book at least 61 days before your planned departure. Booking around this time can save you about 70% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $1,324 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,845.

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

Our data shows that January tends to be the cheapest month to fly to London from Idaho. Users have commonly found prices around $964 for the month, but tickets can be as low as $616. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Idaho to London (ID - LON)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to London as you normally would.

Cheap United Airlines flights from Idaho to London

Take a peek at the cheapest United Airlines flights we've detected traveling from Idaho to London. Deals update often to give you more flight options matching your criteria

Cheap Lufthansa flights from Idaho to London

Browse through some of the cheapest Lufthansa flights traveling from Idaho to London. Deals frequently update to provide users with more options.

Cheap Idaho to London flights in September & October 2023

The best prices found for Idaho to LON flights for September, October
These are some of the most attractive deals on flights from Idaho to London in 2023. Check back regularly for other flight deals.

Idaho to London 2023 flight deals

Cheap flights to London from Idaho found for this year
These are some of the most attractive deals on flights from Idaho to London in 2023. Check back regularly for other flight deals.

Idaho to London flights leaving soon

Late deals on return flights to London from Idaho, departing today and this week
Book one of these great deals on flights from Idaho to London. To prevent any unwanted surprises, users should verify their flight info before booking.

One-way flights to London from Idaho

The cheapest one-way flights from Idaho to London
Take a look at some of the one-way flights we've detected from Idaho to London. For those needing a return trip from Idaho, there is a search form available above.

Find flights from Idaho to London within your budget

Use the slider to find flights from Idaho to London that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$625 - $988

Route

Depart

Return

Price

SpokaneLondon Heathrow

GEG - LHR

GEGLHR

Spokane

mié. 10/4

1 stop23h 07m

London Heathrow

mié. 10/11

2 stops19h 57m

Idaho Falls Fanning FieldLondon Heathrow

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 10/31

1 stop20h 38m

London Heathrow

vie. 11/10

2 stops35h 48m

Idaho Falls Fanning FieldLondon Heathrow

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mié. 3/6

1 stop21h 15m

London Heathrow

jue. 3/14

2 stops28h 24m

SpokaneLondon Heathrow

GEG - LHR

GEGLHR

Spokane

mié. 11/1

1 stop13h 00m

London Heathrow

vie. 11/10

2 stops20h 08m

Boise Air Term. Gowen FldLondon Heathrow

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

dom. 11/12

2 stops16h 40m

London Heathrow

mar. 11/21

2 stops18h 39m

SpokaneLondon Heathrow

GEG - LHR

GEGLHR

Spokane

mié. 11/1

1 stop18h 11m

London Heathrow

vie. 11/10

2 stops21h 10m

Boise Air Term. Gowen FldLondon Heathrow

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

vie. 10/6

2 stops56h 48m

London Heathrow

mar. 10/17

2 stops42h 08m

SpokaneLondon Heathrow

GEG - LHR

GEGLHR

Spokane

mié. 11/15

3 stops17h 55m

London Heathrow

mié. 11/29

2 stops29h 09m

Boise Air Term. Gowen FldLondon Gatwick

BOI - LGW

BOILGW

Boise Air Term. Gowen Fld

lun. 3/11

2 stops15h 10m

London Gatwick

sáb. 3/16

2 stops16h 10m

Flights are sorted by cheapest first

Deals found on 9/20

Reviews of airlines servicing London

Peruse reviews from past customers who have flown with United Airlines, Lufthansa and Virgin Atlantic from Idaho to London to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
3,019 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Delta
7.9
Good
3,019 reviews
Delta
7.9
Good
3,019 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Air France
7.6
Good
274 reviews
Delta
7.9
Good
3,019 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

KLM
7.5
Good
196 reviews
Delta
7.9
Good
3,019 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

United Airlines
7.4
Good
1,887 reviews
Delta
7.9
Good
3,019 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

American Airlines
7.2
Good
2,635 reviews
Delta
7.9
Good
3,019 reviews

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Crew

8.5

Boarding

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Related info for your journey

Useful info, stats and facts about Idaho to London flights.

Can I find flights from Idaho to London for under $700 on Cheapflights?

Yes, there are multiple flights from Idaho to London for under $700. The cheapest flight booked recently is on American Airlines for just $625, but on average you can expect to pay $648.

Are there last-minute flights available from Idaho to London for under $1,600?

There are currently 4+ open flights from Idaho to London within the next 7 days for less than $1,600.

What are the cheapest airlines to fly from Idaho to London one-way?

The cheapest airlines for a one-way flight from Idaho to London are Lufthansa ($461), WestJet ($478), and Condor ($548).

What are the most popular routes from Idaho to London?

What are the most popular airlines that fly from Idaho to London?

What does BOI to LHR mean?

BOI stands for Boise Air Term. Gowen Fld Airport, while LHR stands for London Heathrow Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are London Gatwick Airport (LGW), London Stansted Airport (STN), London City Airport (LCY), London Luton Airport (LTN), London Southend Airport (SEN).

Top 5 airlines flying from Idaho to London

The chart below displays the airlines Cheapflights users traveling from Idaho to London choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$608Average$786FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapest$654Average$779FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Virgin AtlanticCheapest$668Average$863FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapest$675Average$818FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$690Average$866FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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