What airlines fly to London?

Delta, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London from Idaho according to our data. Delta is the first choice among our users, with 34% of people opting to fly with this airline when traveling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Idaho to London?

Virgin Atlantic, United Airlines, and Delta are the most popular carriers operating from Idaho to London

How long does it take to fly to London?

If you’re flying from a popular airport in Idaho, such as Boise or Idaho Falls, and flying into London, then you can expect flight times to average 12h 42m and 14h 55m, respectively.

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

Prices for flights from Idaho to London refresh daily.

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

The number of operators available for flights from Idaho to London is 3 as of May 2026.

How old do you have to be to fly from Idaho to London?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to London.

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

The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$330 Cheap Flights from Idaho to London in 2026

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Find the cheapest flights from Idaho to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:20 am - 11:15 am

BOI

LHR

21h 55m

1 stop

6:50 am - 11:06 pm

LHR

BOI

23h 16m

2 stops

$748United Airlines

Tue, Nov 10 - Thu, Nov 12

11:30 am - 12:00 pm

GEG

LHR

16h 30m

1 stop

6:35 am - 9:09 pm

LHR

GEG

22h 34m

2 stops

$750United Airlines

Tue, Nov 10 - Thu, Nov 12

12:50 pm - 7:25 am

GEG

LHR

34h 35m

1 stop

7:25 am - 10:30 am

LHR

GEG

35h 05m

2 stops

$811Lufthansa

Tue, Oct 13 - Fri, Oct 16

2:02 pm - 1:15 pm

BOI

LHR

16h 13m

1 stop

6:30 am - 5:52 pm

LHR

BOI

18h 22m

2 stops

$878Virgin Atlantic

Tue, Aug 18 - Thu, Aug 27

3:25 pm - 1:05 pm

BOI

LHR

14h 40m

1 stop

6:30 am - 6:33 pm

LHR

BOI

19h 03m

2 stops

$879Delta

Tue, Sep 29 - Wed, Oct 7

5:00 am - 6:30 am

BOI

LHR

18h 30m

2 stops

7:25 am - 9:31 pm

LHR

BOI

21h 06m

2 stops

$882Multiple Airlines

Tue, Oct 13 - Tue, Oct 20

6:00 am - 6:25 am

BOI

LHR

17h 25m

2 stops

6:30 am - 6:33 pm

LHR

BOI

19h 03m

2 stops

$883Delta

Tue, Sep 29 - Wed, Oct 7

1:37 pm - 5:55 pm

GEG

LCY

20h 18m

2 stops

9:50 am - 9:09 pm

LCY

GEG

19h 19m

2 stops

$913Lufthansa

Mon, Oct 5 - Thu, Jan 28

2:08 pm - 6:50 pm

BOI

LGW

21h 42m

2 stops

10:20 am - 11:58 pm

LGW

BOI

20h 38m

2 stops

$971Multiple Airlines

Tue, Oct 13 - Tue, Oct 20

7:00 am - 8:50 am

JAC

LCY

18h 50m

2 stops

7:45 am - 8:29 pm

LCY

JAC

19h 44m

2 stops

$1,599Virgin Atlantic

Tue, Jul 7 - Fri, Jul 24

Air Canada flights from Idaho to London

Our best Air Canada deals on Idaho to London flight tickets

Air Canada

Sep 15

GEG1:37 pmSpokane

35h 58m

2 stops

LHR9:35 amLondon Heathrow

Sep 25

LHR3:05 pmLondon Heathrow

39h 11m

2 stops

GEG10:16 pmSpokane

$892

Air Canada

Aug 11

GEG1:37 pmSpokane

36h 23m

2 stops

LHR10:00 amLondon Heathrow

Aug 28

LHR3:05 pmLondon Heathrow

35h 46m

2 stops

GEG6:51 pmSpokane

$893

Air Canada

Sep 18

GEG1:37 pmSpokane

58h 58m

2 stops

LHR8:35 amLondon Heathrow

Sep 25

LHR3:05 pmLondon Heathrow

39h 11m

2 stops

GEG10:16 pmSpokane

$897

United Airlines flights from Idaho to London

Our best United Airlines deals on Idaho to London flight tickets

United Airlines

Nov 10

BOI6:20 amBoise Air Term. Gowen Fld

21h 55m

1 stop

LHR11:15 amLondon Heathrow

Nov 12

LHR6:50 amLondon Heathrow

23h 16m

2 stops

BOI11:06 pmBoise Air Term. Gowen Fld

$748

United Airlines

Nov 10

GEG11:30 amSpokane

16h 30m

1 stop

LHR12:00 pmLondon Heathrow

Nov 12

LHR6:35 amLondon Heathrow

22h 34m

2 stops

GEG9:09 pmSpokane

$750

United Airlines

Nov 10

GEG11:30 amSpokane

16h 30m

1 stop

LHR12:00 pmLondon Heathrow

Nov 12

LHR6:35 amLondon Heathrow

22h 34m

2 stops

GEG9:09 pmSpokane

$751

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 11/10

6:20 am-11:15 am

1 stop21h 55m

London Heathrow

Thu 11/12

6:50 am-11:06 pm

2 stops23h 16m

$748

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 11/10

11:30 am-12:00 pm

1 stop16h 30m

London Heathrow

Thu 11/12

6:35 am-9:09 pm

2 stops22h 34m

$750

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 10/13

12:50 pm-7:25 am

1 stop34h 35m

London Heathrow

Fri 10/16

7:25 am-10:30 am

2 stops35h 05m

$811

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 8/18

2:02 pm-1:15 pm

1 stop16h 13m

London Heathrow

Thu 8/27

6:30 am-5:52 pm

2 stops18h 22m

$878

Quickest round-trip

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 9/29

3:25 pm-1:05 pm

1 stop14h 40m

London Heathrow

Wed 10/7

6:30 am-6:33 pm

2 stops19h 03m

$879

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 10/13

5:00 am-6:30 am

2 stops18h 30m

London Heathrow

Tue 10/20

7:25 am-9:31 pm

2 stops21h 06m

$882

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 9/29

6:00 am-6:25 am

2 stops17h 25m

London Heathrow

Wed 10/7

6:30 am-6:33 pm

2 stops19h 03m

$883

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Mon 10/5

1:37 pm-5:55 pm

2 stops20h 18m

London City

Thu 1/28

9:50 am-9:09 pm

2 stops19h 19m

$913

BoiseLondon

BOI - LGW

BOILGW

Boise Air Term. Gowen Fld

Tue 10/13

2:08 pm-6:50 pm

2 stops21h 42m

London Gatwick

Tue 10/20

10:20 am-11:58 pm

2 stops20h 38m

$971

JacksonLondon

JAC - LCY

JACLCY

Jackson Hole

Tue 7/7

7:00 am-8:50 am

2 stops18h 50m

London City

Fri 7/24

7:45 am-8:29 pm

2 stops19h 44m

$1,599

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 London

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 London?

The cheapest month to fly to London from Idaho is in October. Flight prices, which tend to average around $399, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Idaho averaging around $547.

Can stopping save me money on Idaho to London flights?

You could potentially save up to 20% on your flight if you consider stops on a Idaho to London flight.

Cheap Idaho to London flight deals and tips

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

Fastest flight time	12h 17m
Direct flights	None

The fastest flight from Idaho to London takes 12h 17m

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

Search flight deals

Frequently asked questions about flying from Idaho to London

When did momondo last update prices for flights from Idaho to London?
Prices for flights from Idaho to London refresh daily.
How many operators does momondo search for flights from Idaho to London?
The number of operators available for flights from Idaho to London is 3 as of May 2026.
How old do you have to be to fly from Idaho to London?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to London.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Idaho to London

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

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom $600	Free Cancellation	Rating 7.4 688 reviews	Search Virgin Atlantic flights
United Airlines	PriceFrom $639	Free Cancellation	Rating 7.4 9,729 reviews	Search United Airlines flights
Delta	PriceFrom $678	Free Cancellation	Rating 7.9 8,455 reviews	Search Delta flights

Hounslow

Gatwick

Milton Keynes

Dover

Luton

Hayes

Crawley

Wembley

Slough

Croydon

Stansted

Watford

Harrow

Brentwood

Dartford

Cobham

Folkestone

Romford

Uxbridge

Guildford

Why use momondo?

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

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 London for you.

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

Yes. All flights to London from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Idaho to London?

Once all potential Idaho to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to London from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London trip

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Cheap flights from Idaho to London from $330

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to London departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from Idaho to London

Our best Air Canada deals on Idaho to London flight tickets

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How to get the cheapest flight ticket from Idaho to London

What is the cheapest month to fly to London?

Can stopping save me money on Idaho to London flights?

What is the cheapest airline that flies from Idaho to London?

What airlines fly to London?

How long does it take to fly to London?

Cheap Idaho to London flight deals and tips

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Idaho to London

Best airlines flying from Idaho to London

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

Traveling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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