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

United Airlines, Delta, and American Airlines are the most popular carriers operating from Idaho to United Kingdom

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 12h on average. If you fly from Boise (another popular airport in Idaho) to London Heathrow Airport, then the average flight time is 12h 05m.

What airlines fly to United Kingdom?

Delta, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to United Kingdom from Idaho according to our data. Delta is the first choice among our users, with 44% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 3 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

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 4 as of August 2026.

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.

$323 Cheap Flights from Idaho to the United Kingdom in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to the United Kingdom

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:40 pm - 5:45 pmJAC Jackson Hole-LHR London Heathrow

20h 05m2 stops Denver Intl Frankfurt am Main

7:40 am - 9:13 pmLHR London Heathrow-JAC Jackson Hole

20h 33m2 stops Munich Franz Josef Strauss Denver Intl

$747Lufthansa

Wed, Dec 2 - Fri, Dec 4

12:30 pm - 12:00 pmJAC Jackson Hole-LHR London Heathrow

16h 30m1 stop Chicago O'Hare Intl

6:35 am - 9:13 pmLHR London Heathrow-JAC Jackson Hole

21h 38m2 stops Munich Franz Josef Strauss Denver Intl

$750United Airlines

Wed, Dec 2 - Fri, Dec 4

12:25 pm - 12:00 pmJAC Jackson Hole-LHR London Heathrow

16h 35m1 stop Chicago O'Hare Intl

6:35 am - 9:13 pmLHR London Heathrow-JAC Jackson Hole

21h 38m2 stops Munich Franz Josef Strauss Denver Intl

$750United Airlines

Wed, Dec 2 - Fri, Dec 4

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

20h 00m1 stop Dallas/Fort Worth

5:25 pm - 12:01 pmLHR London Heathrow-GEG Spokane

26h 36m2 stops Madrid Barajas Dallas/Fort Worth

$849Iberia

Tue, Dec 1 - Wed, Dec 9

3:00 pm - 7:05 amBOI Boise Air Term. Gowen Fld-LHR London Heathrow

33h 05m1 stop Minneapolis St Paul

6:20 am - 6:33 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 13m2 stops Paris Charles de Gaulle Seattle/Tacoma Intl

$877Delta

Sun, Dec 6 - Tue, Jan 12

7:17 pm - 8:10 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

17h 53m2 stops Seattle/Tacoma Intl New York John F Kennedy Intl

8:55 am - 6:33 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 38m2 stops Paris Charles de Gaulle Seattle/Tacoma Intl

$877Delta

Sun, Dec 6 - Tue, Jan 12

1:21 pm - 10:00 amJAC Jackson Hole-LHR London Heathrow

13h 39m1 stop Dallas/Fort Worth

7:40 pm - 12:39 pmLHR London Heathrow-JAC Jackson Hole

23h 59m2 stops Madrid Barajas Dallas/Fort Worth

$882American Airlines

Wed, Dec 2 - Mon, Dec 7

3:24 pm - 3:40 pmBOI Boise Air Term. Gowen Fld-EDI Edinburgh Turnhouse

17h 16m2 stops Chicago O'Hare Intl London Heathrow

10:30 am - 10:29 pmEDI Edinburgh Turnhouse-BOI Boise Air Term. Gowen Fld

18h 59m2 stops New York John F Kennedy Intl Dallas/Fort Worth

$914American Airlines

Tue, Oct 13 - Tue, Oct 20

3:28 pm - 11:20 amBOI Boise Air Term. Gowen Fld-LHR London Heathrow

12h 52m1 stop Seattle/Tacoma Intl

10:55 am - 5:54 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

13h 59m1 stop Salt Lake City

$937Virgin Atlantic

Tue, Sep 22 - Tue, Sep 29

12:17 pm - 11:20 amBOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 03m1 stop Seattle/Tacoma Intl

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

14h 00m1 stop Seattle/Tacoma Intl

$937Virgin Atlantic

Tue, Sep 22 - Tue, Sep 29

Cheap last minute flights

Enter your travel dates to find the best prices.

5:44 pm - 8:25 amBOI Boise Air Term. Gowen Fld-EDI Edinburgh Turnhouse

31h 41m2 stops Denver Intl Chicago O'Hare Intl

12:30 pm - 10:40 pmEDI Edinburgh Turnhouse-BOI Boise Air Term. Gowen Fld

17h 10m2 stops Washington, D.C. Dulles Intl Denver Intl

$1,079United Airlines

Mon, Aug 31 - Sun, Sep 6

8:31 am - 3:05 pmGEG Spokane-LHR London Heathrow

22h 34m1 stop Seattle/Tacoma Intl

5:00 pm - 10:25 pmLHR London Heathrow-GEG Spokane

13h 25m1 stop Seattle/Tacoma Intl

$1,112Alaska Airlines

Sun, Aug 30 - Fri, Sep 4

8:33 pm - 3:05 pmGEG Spokane-LHR London Heathrow

34h 32m1 stop Seattle/Tacoma Intl

5:00 pm - 11:59 pmLHR London Heathrow-GEG Spokane

14h 59m1 stop Seattle/Tacoma Intl

$1,118Alaska Airlines

Sun, Aug 30 - Fri, Sep 4

12:24 pm - 8:25 amBOI Boise Air Term. Gowen Fld-EDI Edinburgh Turnhouse

13h 01m1 stop Chicago O'Hare Intl

9:40 am - 9:37 pmEDI Edinburgh Turnhouse-BOI Boise Air Term. Gowen Fld

18h 57m2 stops Newark Denver Intl

$1,133United Airlines

Mon, Aug 31 - Sun, Sep 6

5:00 am - 7:20 amBOI Boise Air Term. Gowen Fld-EDI Edinburgh Turnhouse

19h 20m3 stops Denver Intl Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 9:24 pmEDI Edinburgh Turnhouse-BOI Boise Air Term. Gowen Fld

19h 24m2 stops Toronto Pearson Intl San Francisco

$1,149Multiple Airlines

Mon, Aug 31 - Sun, Sep 6

12:24 pm - 8:25 amBOI Boise Air Term. Gowen Fld-EDI Edinburgh Turnhouse

13h 01m1 stop Chicago O'Hare Intl

11:30 am - 10:53 pmEDI Edinburgh Turnhouse-BOI Boise Air Term. Gowen Fld

18h 23m1 stop Chicago O'Hare Intl

$1,212United Airlines

Mon, Aug 31 - Sun, Sep 6

5:59 pm - 3:35 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

14h 36m1 stop Seattle/Tacoma Intl

9:55 am - 9:57 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 02m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$1,250Delta

Thu, Sep 3 - Mon, Sep 7

10:35 am - 10:30 amBOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 55m2 stops Seattle/Tacoma Intl Paris Charles de Gaulle

9:55 am - 9:57 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 02m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$1,254Delta

Thu, Sep 3 - Mon, Sep 7

5:59 pm - 2:00 pmBOI Boise Air Term. Gowen Fld-LHR London Heathrow

13h 01m1 stop Seattle/Tacoma Intl

11:40 am - 11:53 pmLHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 13m1 stop Seattle/Tacoma Intl

$1,277Virgin Atlantic

Thu, Sep 3 - Mon, Sep 7

9:25 am - 12:10 pmGEG Spokane-LHR London Heathrow

18h 45m1 stop Seattle/Tacoma Intl

9:55 am - 9:16 pmLHR London Heathrow-GEG Spokane

19h 21m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$1,479Delta

Sun, Aug 30 - Fri, Sep 4

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United Airlines flights from Idaho to United Kingdom

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

United Airlines

Dec 2

JAC12:30 pmJackson Hole

16h 30m

1 stop

LHR12:00 pmLondon Heathrow

Dec 4

LHR6:35 amLondon Heathrow

21h 38m

2 stops

JAC9:13 pmJackson Hole

$750

United Airlines

Dec 2

JAC12:30 pmJackson Hole

15h 20m

2 stops

LHR10:50 amLondon Heathrow

Dec 4

LHR6:35 amLondon Heathrow

21h 38m

2 stops

JAC9:13 pmJackson Hole

$755

United Airlines

Dec 6

BOI6:10 amBoise Air Term. Gowen Fld

18h 15m

1 stop

LHR7:25 amLondon Heathrow

Dec 8

LHR6:35 amLondon Heathrow

19h 41m

2 stops

BOI7:16 pmBoise Air Term. Gowen Fld

$819

Delta flights from Idaho to United Kingdom

Our best Delta deals on Idaho to United Kingdom flight tickets

Delta

Dec 6

BOI3:00 pmBoise Air Term. Gowen Fld

33h 05m

1 stop

LHR7:05 amLondon Heathrow

Jan 12

LHR6:20 amLondon Heathrow

19h 13m

2 stops

BOI6:33 pmBoise Air Term. Gowen Fld

$877

Delta

Dec 2

JAC7:25 amJackson Hole

16h 40m

2 stops

LHR7:05 amLondon Heathrow

Dec 7

LHR10:00 amLondon Heathrow

37h 35m

2 stops

JAC4:35 pmJackson Hole

$883

Delta

Jan 11

GEG7:00 amSpokane

16h 05m

1 stop

LHR7:05 amLondon Heathrow

Jan 15

LHR6:30 amLondon Heathrow

16h 15m

2 stops

GEG2:45 pmSpokane

$888

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Wed 12/2

2:40 pm-5:45 pm

2 stops20h 05m

London Heathrow

Fri 12/4

7:40 am-9:13 pm

2 stops20h 33m

$747

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Wed 12/2

12:30 pm-12:00 pm

1 stop16h 30m

London Heathrow

Fri 12/4

6:35 am-9:13 pm

2 stops21h 38m

$750

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Wed 12/2

12:25 pm-12:00 pm

1 stop16h 35m

London Heathrow

Fri 12/4

6:35 am-9:13 pm

2 stops21h 38m

$750

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Tue 12/1

6:00 am-10:00 am

1 stop20h 00m

London Heathrow

Wed 12/9

5:25 pm-12:01 pm

2 stops26h 36m

$849

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Sun 12/6

3:00 pm-7:05 am

1 stop33h 05m

London Heathrow

Tue 1/12

6:20 am-6:33 pm

2 stops19h 13m

$877

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Sun 12/6

7:17 pm-8:10 pm

2 stops17h 53m

London Heathrow

Tue 1/12

8:55 am-6:33 pm

2 stops16h 38m

$877

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Wed 12/2

1:21 pm-10:00 am

1 stop13h 39m

London Heathrow

Mon 12/7

7:40 pm-12:39 pm

2 stops23h 59m

$882

BoiseEdinburgh

BOI Boise Air Term. Gowen Fld - EDI Edinburgh Turnhouse

BOIEDI

Boise Air Term. Gowen Fld

Tue 10/13

3:24 pm-3:40 pm

2 stops17h 16m

Edinburgh Turnhouse

Tue 10/20

10:30 am-10:29 pm

2 stops18h 59m

$914

Quickest round-trip

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Tue 9/22

3:28 pm-11:20 am

1 stop12h 52m

London Heathrow

Tue 9/29

10:55 am-5:54 pm

1 stop13h 59m

$937

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Tue 9/22

12:17 pm-11:20 am

1 stop16h 03m

London Heathrow

Tue 9/29

11:40 am-6:40 pm

1 stop14h 00m

$937

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, November 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 $742. If you aren’t able to travel to United Kingdom during the month of November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $810.

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

You could potentially save up to 26% 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	$323
Fastest flight time	12h 00m
Direct flights	None

The best one-way flight to United Kingdom from Idaho in the past 72 hours is $323. The best round-trip flight deal from Idaho to United Kingdom found on momondo in the last 72 hours is $747.

The fastest flight from Idaho to United Kingdom takes 12h 00m

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

Search flight deals

Frequently asked questions about flying from Idaho to the 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 4 as of August 2026.
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
Virgin Atlantic	PriceFrom $600	Free Cancellation	Rating 7.4 695 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $627	Free Cancellation	Rating 7.8 8,538 reviews	Search Delta flights
United Airlines	PriceFrom $639	Free Cancellation	Rating 7.4 10,136 reviews	Search United Airlines 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.