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

United Airlines, Lufthansa, and Alaska Airlines are the most popular carriers operating from United Kingdom to Idaho

How long is the flight from United Kingdom to Idaho?

Flight times from United Kingdom to Idaho vary, but if you’re flying out of Edinburgh and flying into Boise (one of the most popular routes), then the duration is 17h 05m on average. Another popular route from United Kingdom to Idaho is flying from London to Boise, which will take roughly 17h 42m. Keep in mind that layovers or delays could extend your travel time.

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

Prices for flights from United Kingdom to Idaho are updated daily.

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

There is 1 operator available for flights from United Kingdom to Idaho as of September 2026.

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

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 United Kingdom to Idaho.

What documentation or ID do you need to fly to Idaho?

The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$467 Cheap Flights from the United Kingdom to Idaho in 2026

Find the cheapest flights from the United Kingdom to Idaho

Round-trip

One-way

Last minute

Recent round-trip flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

5:45 pm - 11:55 pmLHR London Heathrow-GEG Spokane

14h 10m1 stop Seattle/Tacoma Intl

1:38 pm - 10:40 amGEG Spokane-LHR London Heathrow

14h 02m1 stop Seattle/Tacoma Intl

$738Multiple Airlines

Thu, Oct 15 - Wed, Oct 28

11:45 am - 11:55 pmLHR London Heathrow-GEG Spokane

20h 10m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

1:38 pm - 10:40 amGEG Spokane-LHR London Heathrow

14h 02m1 stop Seattle/Tacoma Intl

$801Multiple Airlines

Thu, Oct 15 - Wed, Oct 28

8:55 am - 9:11 pmLHR London Heathrow-GEG Spokane

20h 16m2 stops Paris Charles de Gaulle Seattle/Tacoma Intl

1:21 pm - 10:40 amGEG Spokane-LHR London Heathrow

13h 19m1 stop Seattle/Tacoma Intl

$836Multiple Airlines

Mon, Dec 14 - Tue, Dec 29

12:20 pm - 9:11 pmLHR London Heathrow-GEG Spokane

16h 51m1 stop Seattle/Tacoma Intl

1:21 pm - 10:40 amGEG Spokane-LHR London Heathrow

13h 19m1 stop Seattle/Tacoma Intl

$863Multiple Airlines

Tue, Dec 15 - Tue, Dec 29

12:20 pm - 9:11 pmLHR London Heathrow-GEG Spokane

16h 51m1 stop Seattle/Tacoma Intl

1:21 pm - 10:40 amGEG Spokane-LHR London Heathrow

13h 19m1 stop Seattle/Tacoma Intl

$864Multiple Airlines

Mon, Dec 14 - Tue, Dec 29

8:55 am - 9:11 pmLHR London Heathrow-GEG Spokane

20h 16m2 stops Paris Charles de Gaulle Seattle/Tacoma Intl

6:00 am - 10:40 amGEG Spokane-LHR London Heathrow

20h 40m1 stop Seattle/Tacoma Intl

$875Multiple Airlines

Mon, Dec 14 - Mon, Dec 28

11:45 am - 9:25 pmLHR London Heathrow-GEG Spokane

17h 40m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

1:38 pm - 10:40 amGEG Spokane-LHR London Heathrow

14h 02m1 stop Seattle/Tacoma Intl

$880Multiple Airlines

Thu, Oct 15 - Wed, Oct 28

5:45 pm - 11:55 pmLHR London Heathrow-GEG Spokane

14h 10m1 stop Seattle/Tacoma Intl

1:38 pm - 10:40 amGEG Spokane-LHR London Heathrow

14h 02m1 stop Seattle/Tacoma Intl

$900Multiple Airlines

Thu, Oct 15 - Wed, Oct 28

12:20 pm - 9:11 pmLHR London Heathrow-GEG Spokane

16h 51m1 stop Seattle/Tacoma Intl

1:21 pm - 10:40 amGEG Spokane-LHR London Heathrow

13h 19m1 stop Seattle/Tacoma Intl

$901Multiple Airlines

Mon, Dec 14 - Tue, Dec 29

7:30 pm - 10:34 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

34h 04m2 stops Kastrup Copenhagen Seattle/Tacoma Intl

10:34 am - 5:40 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

24h 06m2 stops Seattle/Tacoma Intl Kastrup Copenhagen

$917Scandinavian Airlines

Mon, Sep 21 - Tue, Oct 6

Recent last minute flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

6:40 pm - 6:40 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

31h 00m2 stops Kastrup Copenhagen Seattle/Tacoma Intl

12:17 pm - 5:40 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 23m2 stops Seattle/Tacoma Intl Kastrup Copenhagen

$1,074Scandinavian Airlines

Mon, Sep 14 - Tue, Sep 22

9:55 am - 11:00 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

20h 05m1 stop Los Angeles Los Angeles

6:47 pm - 5:35 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 48m1 stop Los Angeles Los Angeles

$1,101Multiple Airlines

Tue, Sep 15 - Thu, Sep 24

2:30 pm - 11:00 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

15h 30m1 stop Los Angeles Los Angeles

6:47 pm - 5:35 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 48m1 stop Los Angeles Los Angeles

$1,101Multiple Airlines

Wed, Sep 16 - Thu, Sep 24

9:55 am - 11:00 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

20h 05m1 stop Los Angeles Los Angeles

6:47 pm - 5:35 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 48m1 stop Los Angeles Los Angeles

$1,101Multiple Airlines

Tue, Sep 15 - Tue, Sep 22

2:30 pm - 11:00 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

15h 30m1 stop Los Angeles Los Angeles

6:47 pm - 5:35 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 48m1 stop Los Angeles Los Angeles

$1,101Multiple Airlines

Wed, Sep 16 - Wed, Sep 23

3:40 pm - 10:38 pmLGW London Gatwick-BOI Boise Air Term. Gowen Fld

37h 58m2 stops Reykjavik Keflavik Intl Seattle/Tacoma Intl

4:20 pm - 2:40 pmBOI Boise Air Term. Gowen Fld-LGW London Gatwick

15h 20m2 stops Seattle/Tacoma Intl Reykjavik Keflavik Intl

$1,168Icelandair

Thu, Sep 17 - Tue, Sep 22

7:30 pm - 6:40 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

30h 10m2 stops Kastrup Copenhagen Seattle/Tacoma Intl

10:34 am - 1:35 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 01m2 stops Seattle/Tacoma Intl Kastrup Copenhagen

$1,172Scandinavian Airlines

Mon, Sep 14 - Fri, Sep 18

9:55 am - 11:00 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

20h 05m1 stop Los Angeles Los Angeles

7:05 am - 10:15 amBOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 10m1 stop Los Angeles Los Angeles

$1,172Multiple Airlines

Wed, Sep 16 - Sun, Sep 20

11:40 am - 8:35 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

15h 55m1 stop Seattle/Tacoma Intl

4:20 pm - 3:35 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 15m1 stop Seattle/Tacoma Intl

$1,194Multiple Airlines

Wed, Sep 16 - Tue, Sep 22

11:40 am - 6:07 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

13h 27m1 stop Seattle/Tacoma Intl

5:52 pm - 3:35 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

14h 43m1 stop Seattle/Tacoma Intl

$1,194Multiple Airlines

Thu, Sep 17 - Mon, Sep 21

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United Airlines flights from United Kingdom to Idaho

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

United Airlines

Mar 9

LHR7:40 amLondon Heathrow

23h 58m

2 stops

GEG11:38 pmSpokane

Mar 16

GEG5:00 amSpokane

17h 55m

2 stops

LHR5:55 amLondon Heathrow

$937

United Airlines

Dec 6

LHR11:10 amLondon Heathrow

38h 47m

2 stops

GEG5:57 pmSpokane

Dec 27

GEG7:45 amSpokane

41h 55m

2 stops

LHR9:40 amLondon Heathrow

$986

United Airlines

Dec 6

LHR11:10 amLondon Heathrow

41h 59m

2 stops

GEG9:09 pmSpokane

Dec 27

GEG7:45 amSpokane

38h 10m

2 stops

LHR5:55 amLondon Heathrow

$987

Alaska Airlines flights from United Kingdom to Idaho

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

Alaska Airlines

Jan 21

LHR2:45 pmLondon Heathrow

15h 42m

1 stop

GEG10:27 pmSpokane

Jan 25

GEG1:38 pmSpokane

14h 42m

1 stop

LHR12:20 pmLondon Heathrow

$908

Alaska Airlines

Mar 4

LHR2:45 pmLondon Heathrow

34h 26m

1 stop

BOI6:11 pmBoise Air Term. Gowen Fld

Mar 8

BOI4:00 pmBoise Air Term. Gowen Fld

13h 20m

1 stop

LHR12:20 pmLondon Heathrow

$910

Alaska Airlines

Oct 5

LHR5:00 pmLondon Heathrow

26h 39m

1 stop

GEG11:39 amSpokane

Oct 19

GEG5:43 pmSpokane

13h 22m

1 stop

LHR3:05 pmLondon Heathrow

$911

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Thu 10/15

5:45 pm-11:55 pm

1 stop14h 10m

Spokane

Wed 10/28

1:38 pm-10:40 am

1 stop14h 02m

$738

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Thu 10/15

11:45 am-11:55 pm

2 stops20h 10m

Spokane

Wed 10/28

1:38 pm-10:40 am

1 stop14h 02m

$801

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Mon 12/14

8:55 am-9:11 pm

2 stops20h 16m

Spokane

Tue 12/29

1:21 pm-10:40 am

1 stop13h 19m

$836

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Tue 12/15

12:20 pm-9:11 pm

1 stop16h 51m

Spokane

Tue 12/29

1:21 pm-10:40 am

1 stop13h 19m

$863

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Mon 12/14

12:20 pm-9:11 pm

1 stop16h 51m

Spokane

Tue 12/29

1:21 pm-10:40 am

1 stop13h 19m

$864

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Mon 12/14

8:55 am-9:11 pm

2 stops20h 16m

Spokane

Mon 12/28

6:00 am-10:40 am

1 stop20h 40m

$875

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Thu 10/15

11:45 am-9:25 pm

2 stops17h 40m

Spokane

Wed 10/28

1:38 pm-10:40 am

1 stop14h 02m

$880

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Thu 10/15

5:45 pm-11:55 pm

1 stop14h 10m

Spokane

Wed 10/28

1:38 pm-10:40 am

1 stop14h 02m

$900

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Mon 12/14

12:20 pm-9:11 pm

1 stop16h 51m

Spokane

Tue 12/29

1:21 pm-10:40 am

1 stop13h 19m

$901

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 9/21

7:30 pm-10:34 pm

2 stops34h 04m

Boise Air Term. Gowen Fld

Tue 10/6

10:34 am-5:40 pm

2 stops24h 06m

$917

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 United Kingdom to Idaho

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 Idaho?

In general, March is the cheapest month to fly from United Kingdom to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $874. If you don’t want to visit Idaho in March, then you should wait until February to fly from United Kingdom, when ticket prices are also cheap, with an average price of $878.

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

You could potentially save up to 9% on your flight if you consider stops on a United Kingdom to Idaho flight.

Cheap United Kingdom to Idaho flight deals and tips

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

Best Price Found	$467
Fastest flight time	14h 18m
Direct flights	None

The best one-way flight to Idaho from United Kingdom in the past 72 hours is $467. The best round-trip flight deal from United Kingdom to Idaho found on momondo in the last 72 hours is $738.

The fastest flight from United Kingdom to Idaho takes 14h 18m

There are no direct flights from United Kingdom to Idaho. There are no popular flight routes from United Kingdom to Idaho.

Search flight deals

Frequently asked questions about flying from the United Kingdom to Idaho

When did momondo last update prices for flights from United Kingdom to Idaho?
Prices for flights from United Kingdom to Idaho are updated daily.
How many operators does momondo search for flights from United Kingdom to Idaho?
There is 1 operator available for flights from United Kingdom to Idaho as of September 2026.
How old do you have to be to fly from United Kingdom to Idaho?
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 United Kingdom to Idaho.
What documentation or ID do you need to fly to Idaho?
The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United Kingdom to Idaho. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for United Kingdom to Idaho flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from United Kingdom to Idaho.

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

If you are not ready to book a flight from United Kingdom to Idaho now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho and let you know when they change.