What is the cheapest airline that flies from Idaho to United Kingdom?

Virgin Atlantic, Air Canada, and United Airlines are the most popular carriers operating from Idaho to United Kingdom

What airlines fly to United Kingdom?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to United Kingdom from Idaho according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 6 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

How long is the flight from Idaho to United Kingdom?

The flight from Idaho to United Kingdom depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Lewiston (a popular airport in Idaho) to London Heathrow Airport (the most popular airport in United Kingdom), then the flight time is 13h 30m on average. If you fly from Boise (another popular airport in Idaho) to London Heathrow Airport, then the average flight time is 14h 40m.

When did momondo last update prices for flights from Idaho to United Kingdom?

Prices for flights from Idaho to United Kingdom refresh daily.

How many operators does momondo search for flights from Idaho to United Kingdom?

The number of operators available for flights from Idaho to United Kingdom is 6 as of August 2025.

How old do you have to be to fly from Idaho to United Kingdom?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$303 Cheap Flights from Idaho to the United Kingdom in 2025

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Find the cheapest flights from Idaho to the United Kingdom

Round-trip

One-way

Last minute

Cheap round-trip flights

1:00 pm - 10:00 amGEG-LHR

13h 00m1 stop

6:20 am - 6:47 pmLHR-GEG

20h 27m2 stops

$591Delta

Find Deal

mié., nov. 5 - mié., nov. 19

3:25 pm - 11:20 amGEG-LHR

11h 55m1 stop

10:55 am - 10:30 pmLHR-GEG

19h 35m1 stop

$593Virgin Atlantic

Find Deal

mar., ago. 26 - jue., sep. 4

9:45 am - 10:00 amGEG-LHR

16h 15m1 stop

10:45 am - 6:18 pmLHR-GEG

15h 33m1 stop

$598KLM

Find Deal

mié., nov. 5 - mié., nov. 19

7:00 am - 12:20 pmBOI-LHR

22h 20m1 stop

1:25 pm - 11:39 amLHR-BOI

29h 14m2 stops

$604United Airlines

Find Deal

mar., oct. 14 - mar., nov. 11

9:45 am - 10:00 amGEG-LHR

17h 15m1 stop

6:20 am - 2:49 pmLHR-GEG

16h 29m2 stops

$606

Find Deal

mar., oct. 28 - jue., nov. 6

10:40 am - 12:20 pmBOI-LHR

18h 40m1 stop

3:50 pm - 11:31 amLHR-BOI

26h 41m2 stops

$610United Airlines

Find Deal

mié., sep. 3 - mar., sep. 16

3:25 pm - 2:15 pmGEG-LHR

14h 50m1 stop

6:30 am - 2:45 pmLHR-GEG

16h 15m2 stops

$612KLM

Find Deal

mar., ago. 26 - jue., sep. 4

5:15 am - 6:30 amGEG-LHR

17h 15m2 stops

8:05 pm - 9:03 pmLHR-GEG

32h 58m2 stops

$622

Find Deal

mar., ago. 26 - jue., sep. 4

7:00 am - 6:25 amBOI-LHR

16h 25m1 stop

10:30 am - 9:48 pmLHR-BOI

18h 18m1 stop

$627Finnair

Find Deal

mar., sep. 23 - mié., oct. 1

6:59 am - 6:45 pmBOI-EDI

28h 46m2 stops

12:30 pm - 9:48 pmEDI-BOI

40h 18m2 stops

$2,031Finnair

Find Deal

jue., sep. 18 - mar., sep. 30

United Airlines flights from Idaho to United Kingdom

Our best United Airlines deals on Idaho to United Kingdom flight tickets

United Airlines

Oct 14

BOI7:00 amBoise Air Term. Gowen Fld

22h 20m

1 stop

LHR12:20 pmLondon Heathrow

Nov 11

LHR1:25 pmLondon Heathrow

29h 14m

2 stops

BOI11:39 amBoise Air Term. Gowen Fld

$604

Find similar

United Airlines

Sep 3

BOI10:40 amBoise Air Term. Gowen Fld

18h 40m

1 stop

LHR12:20 pmLondon Heathrow

Sep 16

LHR3:50 pmLondon Heathrow

26h 41m

2 stops

BOI11:31 amBoise Air Term. Gowen Fld

$610

Find similar

United Airlines

Sep 21

BOI10:48 amBoise Air Term. Gowen Fld

15h 52m

1 stop

LHR9:40 amLondon Heathrow

Oct 3

LHR4:00 pmLondon Heathrow

26h 39m

2 stops

BOI11:39 amBoise Air Term. Gowen Fld

$611

Find similar

Air Canada flights from Idaho to United Kingdom

Our best Air Canada deals on Idaho to United Kingdom flight tickets

Air Canada

Sep 20

BOI5:39 pmBoise Air Term. Gowen Fld

29h 51m

2 stops

LHR6:30 amLondon Heathrow

Oct 2

LHR5:40 pmLondon Heathrow

32h 07m

2 stops

BOI6:47 pmBoise Air Term. Gowen Fld

$628

Find similar

Air Canada

Sep 9

BOI10:45 amBoise Air Term. Gowen Fld

18h 05m

3 stops

LHR11:50 amLondon Heathrow

Sep 16

LHR8:30 amLondon Heathrow

19h 44m

3 stops

BOI9:14 pmBoise Air Term. Gowen Fld

$644

Find similar

Air Canada

Sep 20

BOI5:39 pmBoise Air Term. Gowen Fld

29h 51m

2 stops

LHR6:30 amLondon Heathrow

Oct 1

LHR2:05 pmLondon Heathrow

26h 37m

2 stops

BOI9:42 amBoise Air Term. Gowen Fld

$649

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

mié. 11/5

1:00 pm-10:00 am

1 stop13h 00m

London Heathrow

mié. 11/19

6:20 am-6:47 pm

2 stops20h 27m

$591

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

mar. 8/26

3:25 pm-11:20 am

1 stop11h 55m

London Heathrow

jue. 9/4

10:55 am-10:30 pm

1 stop19h 35m

$593

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

mié. 11/5

9:45 am-10:00 am

1 stop16h 15m

London Heathrow

mié. 11/19

10:45 am-6:18 pm

1 stop15h 33m

$598

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mar. 10/14

7:00 am-12:20 pm

1 stop22h 20m

London Heathrow

mar. 11/11

1:25 pm-11:39 am

2 stops29h 14m

$604

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

mar. 10/28

9:45 am-10:00 am

1 stop17h 15m

London Heathrow

jue. 11/6

6:20 am-2:49 pm

2 stops16h 29m

$606

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mié. 9/3

10:40 am-12:20 pm

1 stop18h 40m

London Heathrow

mar. 9/16

3:50 pm-11:31 am

2 stops26h 41m

$610

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

mar. 8/26

3:25 pm-2:15 pm

1 stop14h 50m

London Heathrow

jue. 9/4

6:30 am-2:45 pm

2 stops16h 15m

$612

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

mar. 8/26

5:15 am-6:30 am

2 stops17h 15m

London Heathrow

jue. 9/4

8:05 pm-9:03 pm

2 stops32h 58m

$622

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mar. 9/23

7:00 am-6:25 am

1 stop16h 25m

London Heathrow

mié. 10/1

10:30 am-9:48 pm

1 stop18h 18m

$627

BoiseEdinburgh

BOI - EDI

BOIEDI

Boise Air Term. Gowen Fld

jue. 9/18

6:59 am-6:45 pm

2 stops28h 46m

Edinburgh Turnhouse

mar. 9/30

12:30 pm-9:48 pm

2 stops40h 18m

$2,031

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to United Kingdom

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to United Kingdom?

In general, October is the cheapest month to fly from Idaho to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $751. If you aren’t able to travel to United Kingdom during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $786.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Idaho to United Kingdom is on a Wednesday when prices can be found for as low as $801. The most expensive day to fly to United Kingdom is Friday, with ticket prices averaging around $975.

What is the cheapest time of day to depart on your flight to United Kingdom?

According to our data, the cheapest time of day to fly to United Kingdom is in the morning. momondo users have found flights departing from Idaho to United Kingdom in the morning for as low as $864. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the evening, with an average ticket price of $1,103. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $942 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Idaho for as low as $577 on momondo.

Can stopping save me money on Idaho to United Kingdom flights?

You could potentially save up to 3% on your flight if you consider stops on a Idaho to United Kingdom flight.

Cheap Idaho to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to United Kingdom

Best Price Found	$303
Fastest flight time	11h 41m
Direct flights	None
Airports in United Kingdom	5 airports

The best one-way flight to United Kingdom from Idaho in the past 72 hours is $303. The best round-trip flight deal from Idaho to United Kingdom found on momondo in the last 72 hours is $591.

The fastest flight from Idaho to United Kingdom takes 11h 41m

There are no direct flights from Idaho to United Kingdom. Popular non-direct routes for this connection are Boise Air Term. Gowen Fld Airport - London Gatwick Airport, Spokane Airport - London Heathrow Airport and Boise Air Term. Gowen Fld Airport - London Heathrow Airport.

There are 5 airports near United Kingdom: London City (LCY), London Heathrow (LHR), Edinburgh Turnhouse (EDI), London Gatwick (LGW), Glasgow Intl (GLA)

Search flight deals

When did momondo last update prices for flights from Idaho to United Kingdom?
Prices for flights from Idaho to United Kingdom refresh daily.
How many operators does momondo search for flights from Idaho to United Kingdom?
The number of operators available for flights from Idaho to United Kingdom is 6 as of August 2025.
How old do you have to be to fly from Idaho to United Kingdom?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to United Kingdom

Compare and see reviews for airlines that fly from Idaho to United Kingdom with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $555	Free Cancellation	Rating 7.8 1,381 reviews	Search KLM flights
United Airlines	PriceFrom $679	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom $695	Free Cancellation	Rating 7.4 657 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom $703	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $723	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
Icelandair	PriceFrom $1,097	Free Cancellation	Rating 7.0 524 reviews	Search Icelandair flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to United Kingdom?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to United Kingdom for you.

Can I find flights from Idaho to United Kingdom with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to United Kingdom from Idaho with this policy.

How can momondo help me find flights from Idaho to United Kingdom?

Once you have performed a search for Idaho to United Kingdom flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Idaho to United Kingdom right now. Can momondo alert me if prices change?

If you are simply researching potential flights to United Kingdom, momondo offers a useful price alert feature which will track prices for flights to United Kingdom from Idaho and alert you when they change.