What airlines fly to London?

United Airlines, Virgin Atlantic and Delta are the top three most popular airlines that fly to London 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 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?

Delta, Air Canada, and United Airlines 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 Idaho Falls or Boise, and flying into London, then you can expect flight times to average 11h 43m and 13h 50m, 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 July 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.

$334 Cheap Flights from Idaho to London in 2026

Discover deals from 900+ travel sites with momondo.

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.

5:40 pm - 9:40 am

IDA

LHR

33h 00m

1 stop

6:35 am - 5:22 pm

LHR

IDA

17h 47m

2 stops

$822United Airlines

Mon, Nov 30 - Thu, Dec 3

5:40 pm - 9:40 am

IDA

LHR

33h 00m

1 stop

6:35 am - 9:28 am

LHR

IDA

33h 53m

2 stops

$827United Airlines

Mon, Nov 30 - Thu, Dec 3

7:50 am - 8:55 am

JAC

LHR

18h 05m

1 stop

8:15 pm - 9:02 pm

LHR

JAC

30h 47m

2 stops

$849Multiple Airlines

Sat, Oct 24 - Sun, Oct 25

7:50 am - 7:40 am

JAC

LHR

16h 50m

2 stops

8:15 pm - 9:02 pm

LHR

JAC

30h 47m

2 stops

$853Multiple Airlines

Sat, Oct 24 - Sun, Oct 25

12:14 pm - 5:40 pm

BOI

LHR

22h 26m

2 stops

7:30 pm - 6:40 pm

LHR

BOI

30h 10m

2 stops

$871Scandinavian Airlines

Tue, Sep 15 - Mon, Sep 28

5:25 am - 10:00 am

GEG

LHR

20h 35m

1 stop

6:15 am - 8:55 pm

LHR

GEG

22h 40m

2 stops

$871Iberia

Wed, Nov 18 - Wed, Nov 25

12:14 pm - 4:00 pm

BOI

LHR

20h 46m

2 stops

6:40 am - 6:40 pm

LHR

BOI

19h 00m

2 stops

$872Scandinavian Airlines

Tue, Sep 8 - Tue, Sep 22

5:25 am - 10:00 am

GEG

LHR

20h 35m

1 stop

7:35 am - 8:55 pm

LHR

GEG

21h 20m

2 stops

$872Iberia

Wed, Nov 18 - Wed, Nov 25

4:00 pm - 3:00 pm

BOI

LHR

16h 00m

1 stop

6:30 am - 6:33 pm

LHR

BOI

19h 03m

2 stops

$875Delta

Wed, Oct 7 - Tue, Oct 13

7:00 am - 7:10 am

GEG

LHR

16h 10m

2 stops

6:30 am - 11:42 pm

LHR

GEG

24h 12m

2 stops

$878Delta

Wed, Oct 14 - Wed, Oct 28

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Alaska Airlines flights from Idaho to London

Our best Alaska Airlines deals on Idaho to London flight tickets

Alaska Airlines

Dec 8

IDA4:03 pmIdaho Falls Fanning Field

13h 17m

1 stop

LHR12:20 pmLondon Heathrow

Dec 15

LHR2:45 pmLondon Heathrow

14h 54m

1 stop

IDA10:39 pmIdaho Falls Fanning Field

$886

Alaska Airlines

Oct 7

IDA1:46 pmIdaho Falls Fanning Field

18h 19m

1 stop

LHR3:05 pmLondon Heathrow

Oct 13

LHR5:00 pmLondon Heathrow

29h 35m

1 stop

IDA3:35 pmIdaho Falls Fanning Field

$890

Alaska Airlines

Oct 7

IDA1:46 pmIdaho Falls Fanning Field

18h 19m

1 stop

LHR3:05 pmLondon Heathrow

Oct 13

LHR5:00 pmLondon Heathrow

29h 35m

1 stop

IDA3:35 pmIdaho Falls Fanning Field

$891

Virgin Atlantic flights from Idaho to London

Our best Virgin Atlantic deals on Idaho to London flight tickets

Virgin Atlantic

Dec 8

IDA6:00 amIdaho Falls Fanning Field

20h 00m

2 stops

LHR9:00 amLondon Heathrow

Dec 15

LHR11:05 amLondon Heathrow

18h 14m

2 stops

IDA10:19 pmIdaho Falls Fanning Field

$911

Virgin Atlantic

Dec 30

IDA6:00 amIdaho Falls Fanning Field

18h 05m

2 stops

LHR7:05 amLondon Heathrow

Jan 7

LHR6:20 amLondon Heathrow

22h 59m

2 stops

IDA10:19 pmIdaho Falls Fanning Field

$946

Virgin Atlantic

Jul 8

BOI11:53 amBoise Air Term. Gowen Fld

22h 27m

2 stops

LCY5:20 pmLondon City

Jul 14

LCY9:20 amLondon City

21h 26m

2 stops

BOI11:46 pmBoise Air Term. Gowen Fld

$1,576

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 11/30

5:40 pm-9:40 am

1 stop33h 00m

London Heathrow

Thu 12/3

6:35 am-5:22 pm

2 stops17h 47m

$822

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 11/30

5:40 pm-9:40 am

1 stop33h 00m

London Heathrow

Thu 12/3

6:35 am-9:28 am

2 stops33h 53m

$827

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Sat 10/24

7:50 am-8:55 am

1 stop18h 05m

London Heathrow

Sun 10/25

8:15 pm-9:02 pm

2 stops30h 47m

$849

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Sat 10/24

7:50 am-7:40 am

2 stops16h 50m

London Heathrow

Sun 10/25

8:15 pm-9:02 pm

2 stops30h 47m

$853

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 9/15

12:14 pm-5:40 pm

2 stops22h 26m

London Heathrow

Mon 9/28

7:30 pm-6:40 pm

2 stops30h 10m

$871

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 11/18

5:25 am-10:00 am

1 stop20h 35m

London Heathrow

Wed 11/25

6:15 am-8:55 pm

2 stops22h 40m

$871

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 9/8

12:14 pm-4:00 pm

2 stops20h 46m

London Heathrow

Tue 9/22

6:40 am-6:40 pm

2 stops19h 00m

$872

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 11/18

5:25 am-10:00 am

1 stop20h 35m

London Heathrow

Wed 11/25

7:35 am-8:55 pm

2 stops21h 20m

$872

Quickest round-trip

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 10/7

4:00 pm-3:00 pm

1 stop16h 00m

London Heathrow

Tue 10/13

6:30 am-6:33 pm

2 stops19h 03m

$875

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 10/14

7:00 am-7:10 am

2 stops16h 10m

London Heathrow

Wed 10/28

6:30 am-11:42 pm

2 stops24h 12m

$878

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	11h 43m
Direct flights	None

The fastest flight from Idaho to London takes 11h 43m

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 July 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 7.5 691 reviews	Search Virgin Atlantic flights
United Airlines	PriceFrom $639	Free Cancellation	Rating 7.4 9,945 reviews	Search United Airlines flights
Delta	PriceFrom $648	Free Cancellation	Rating 7.8 8,450 reviews	Search Delta flights

Hounslow

Gatwick

Milton Keynes

Luton

Hayes

Dover

Crawley

Croydon

Wembley

Stansted

Harrow

Slough

Watford

Ilford

Cobham

Brentwood

Folkestone

Guildford

Romford

Uxbridge

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.

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Cheap flights from Idaho to London from $339

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 11/23. 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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Alaska Airlines flights from Idaho to London

Our best Alaska Airlines deals on Idaho to London flight tickets

Virgin Atlantic flights from Idaho to London

Our best Virgin Atlantic 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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