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 Idaho Falls (a popular airport in Idaho) to London Heathrow Airport (the most popular airport in United Kingdom), then the flight time is 11h 22m on average. If you fly from Boise (another popular airport in Idaho) to London Heathrow Airport, then the average flight time is 11h 55m.

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 34% 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.

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

Delta, KLM, and Air Canada are the most popular carriers operating from Idaho to United Kingdom

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 May 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.

$239 Cheap Flights from Idaho to the United Kingdom - Save in Minutes

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Find the cheapest flights from Idaho to the United Kingdom

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Cheap round-trip flights

These are some of the best round-trip flight deals from Idaho to the United Kingdom that have been recently found on momondo from popular airlines, departing in the coming months.

8:40 am - 12:05 pmBOI-EDI

20h 25m2 stops

9:00 am - 11:59 pmEDI-BOI

21h 59m2 stops

$689Delta

Find Deal

Sun, Sep 28 - Wed, Oct 22

10:38 am - 5:40 pmBOI-LHR

24h 02m2 stops

6:40 am - 11:20 pmLHR-BOI

23h 40m2 stops

$704Scandinavian Airlines

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Wed, Sep 3 - Tue, Sep 16

11:45 am - 9:20 amBOI-EDI

14h 35m2 stops

10:45 am - 12:17 amEDI-BOI

19h 32m2 stops

$714Virgin Atlantic

Find Deal

Wed, Oct 22 - Wed, Oct 29

5:39 pm - 10:00 amBOI-LHR

33h 21m2 stops

6:40 pm - 9:15 pmLHR-BOI

33h 35m2 stops

$720

Find Deal

Sat, Aug 23 - Thu, Sep 4

6:00 am - 9:40 amGEG-GLA

19h 40m2 stops

5:50 am - 3:52 pmGLA-GEG

18h 02m2 stops

$724

Find Deal

Tue, Aug 12 - Tue, Aug 26

10:45 am - 11:45 amBOI-LHR

18h 00m2 stops

2:05 pm - 11:31 amLHR-BOI

28h 26m2 stops

$725United Airlines

Find Deal

Mon, Oct 13 - Fri, Oct 24

5:39 pm - 9:35 amBOI-LHR

32h 56m2 stops

2:05 pm - 6:34 pmLHR-BOI

35h 29m2 stops

$730Air Canada

Find Deal

Sat, Oct 11 - Tue, Oct 21

7:45 am - 1:20 pmBOI-LHR

22h 35m2 stops

11:10 am - 11:05 pmLHR-BOI

41h 55m2 stops

$731Air Canada

Find Deal

Mon, Oct 20 - Tue, Oct 28

1:00 pm - 12:00 pmBOI-LHR

17h 00m1 stop

11:10 am - 11:05 pmLHR-BOI

18h 55m2 stops

$732United Airlines

Find Deal

Mon, Oct 27 - Wed, Nov 5

1:50 pm - 11:20 amBOI-LHR

14h 30m1 stop

11:00 am - 4:42 pmLHR-BOI

12h 42m1 stop

$1,059Virgin Atlantic

Find Deal

Wed, May 28 - Wed, Jun 4

Scandinavian Airlines flights from Idaho to United Kingdom

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

Scandinavian Airlines

Sep 3

BOI10:38 amBoise Air Term. Gowen Fld

24h 02m

2 stops

LHR5:40 pmLondon Heathrow

Sep 16

LHR6:40 amLondon Heathrow

23h 40m

2 stops

BOI11:20 pmBoise Air Term. Gowen Fld

$704

Find similar

Scandinavian Airlines

Oct 27

BOI3:05 pmBoise Air Term. Gowen Fld

24h 35m

2 stops

LHR9:40 pmLondon Heathrow

Nov 5

LHR7:05 amLondon Heathrow

23h 15m

3 stops

BOI11:20 pmBoise Air Term. Gowen Fld

$708

Find similar

Scandinavian Airlines

Oct 27

BOI3:05 pmBoise Air Term. Gowen Fld

24h 30m

3 stops

LHR9:35 pmLondon Heathrow

Nov 5

LHR7:05 amLondon Heathrow

23h 15m

3 stops

BOI11:20 pmBoise Air Term. Gowen Fld

$711

Find similar

United Airlines flights from Idaho to United Kingdom

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

United Airlines

Oct 13

BOI10:45 amBoise Air Term. Gowen Fld

18h 00m

2 stops

LHR11:45 amLondon Heathrow

Oct 24

LHR2:05 pmLondon Heathrow

28h 26m

2 stops

BOI11:31 amBoise Air Term. Gowen Fld

$725

Find similar

United Airlines

Oct 27

BOI1:00 pmBoise Air Term. Gowen Fld

17h 00m

1 stop

LHR12:00 pmLondon Heathrow

Nov 5

LHR11:10 amLondon Heathrow

18h 55m

2 stops

BOI11:05 pmBoise Air Term. Gowen Fld

$732

Find similar

United Airlines

Aug 9

GEG6:25 pmSpokane

29h 15m

2 stops

LHR7:40 amLondon Heathrow

Aug 18

LHR1:45 pmLondon Heathrow

41h 20m

2 stops

GEG11:05 pmSpokane

$733

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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, February 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 $786. If you aren’t able to travel to United Kingdom during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $787.

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 4 weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $930 when searching 4 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 $821 on momondo.

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	$239
Fastest flight time	11h 22m
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 $239. The best round-trip flight deal from Idaho to United Kingdom found on momondo in the last 72 hours is $689.

The fastest flight from Idaho to United Kingdom takes 11h 22m

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 Spokane Airport - London Gatwick Airport.

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

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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 May 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 1,337 reviews	Search KLM flights
American Airlines	PriceFrom $648	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $687	Free Cancellation	Rating 7.4 8,702 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom $695	Free Cancellation	Rating 7.4 643 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $723	Free Cancellation	Rating 8.0 7,939 reviews	Search Delta flights
Icelandair	PriceFrom $1,072	Free Cancellation	Rating 7.0 488 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.