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

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

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

Prices for flights from London Heathrow Airport to Idaho refresh daily.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Idaho.

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

The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$550 Cheap Flights from London Heathrow Airport to Idaho in 2026

Find the cheapest flights from London Heathrow Airport to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:40 am - 10:34 pm

LHR

BOI

22h 54m

2 stops

10:34 am - 5:40 pm

BOI

LHR

24h 06m

2 stops

$755Scandinavian Airlines

Fri, Sep 11 - Sat, Sep 26

6:40 am - 6:40 pm

LHR

BOI

19h 00m

2 stops

4:00 pm - 4:00 pm

BOI

LHR

41h 00m

2 stops

$760Scandinavian Airlines

Fri, Sep 11 - Fri, Sep 18

6:40 am - 5:09 pm

LHR

GEG

18h 29m

2 stops

11:10 am - 4:00 pm

GEG

LHR

20h 50m

2 stops

$762Scandinavian Airlines

Sat, Sep 12 - Sat, Sep 19

6:40 am - 10:34 pm

LHR

BOI

22h 54m

2 stops

10:34 am - 5:40 pm

BOI

LHR

24h 06m

2 stops

$773Scandinavian Airlines

Fri, Sep 11 - Sat, Sep 26

6:40 am - 5:09 pm

LHR

GEG

18h 29m

2 stops

1:00 pm - 4:25 pm

GEG

LHR

19h 25m

3 stops

$777Scandinavian Airlines

Sat, Sep 12 - Sat, Sep 19

6:40 am - 10:34 pm

LHR

BOI

22h 54m

3 stops

10:34 am - 5:40 pm

BOI

LHR

24h 06m

2 stops

$780Scandinavian Airlines

Fri, Sep 11 - Sat, Sep 26

6:40 am - 10:34 pm

LHR

BOI

22h 54m

2 stops

10:34 am - 5:00 pm

BOI

LHR

23h 26m

3 stops

$782Scandinavian Airlines

Fri, Sep 11 - Sat, Sep 26

6:40 am - 10:54 pm

LHR

BOI

23h 14m

2 stops

4:14 pm - 4:00 pm

BOI

LHR

40h 46m

2 stops

$787Scandinavian Airlines

Fri, Dec 4 - Mon, Dec 7

6:40 am - 7:14 pm

LHR

GEG

20h 34m

2 stops

1:00 pm - 1:35 pm

GEG

LHR

16h 35m

2 stops

$787Scandinavian Airlines

Fri, Aug 28 - Fri, Sep 11

6:40 am - 10:54 pm

LHR

BOI

23h 14m

2 stops

4:14 pm - 4:00 pm

BOI

LHR

40h 46m

2 stops

$788Scandinavian Airlines

Fri, Dec 4 - Mon, Dec 7

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Lufthansa flights from London Heathrow Airport to Idaho

Our best Lufthansa deals on London Heathrow Airport to Idaho flight tickets

Lufthansa

Sep 8

LHR2:50 pmLondon Heathrow

14h 24m

1 stop

GEG9:14 pmSpokane

Oct 6

GEG1:05 pmSpokane

34h 20m

1 stop

LHR7:25 amLondon Heathrow

$978

Lufthansa

Sep 8

LHR2:50 pmLondon Heathrow

14h 24m

1 stop

GEG9:14 pmSpokane

Sep 16

GEG1:37 pmSpokane

14h 58m

1 stop

LHR12:35 pmLondon Heathrow

$990

Lufthansa

Nov 26

LHR11:35 amLondon Heathrow

16h 55m

1 stop

BOI9:30 pmBoise Air Term. Gowen Fld

Jan 13

BOI2:43 pmBoise Air Term. Gowen Fld

11h 57m

1 stop

LHR9:40 amLondon Heathrow

$1,007

Scandinavian Airlines flights from London Heathrow Airport to Idaho

Our best Scandinavian Airlines deals on London Heathrow Airport to Idaho flight tickets

Scandinavian Airlines

Sep 11

LHR6:40 amLondon Heathrow

22h 54m

2 stops

BOI10:34 pmBoise Air Term. Gowen Fld

Sep 26

BOI10:34 amBoise Air Term. Gowen Fld

24h 06m

2 stops

LHR5:40 pmLondon Heathrow

$755

Scandinavian Airlines

Sep 11

LHR6:40 amLondon Heathrow

19h 00m

2 stops

BOI6:40 pmBoise Air Term. Gowen Fld

Sep 18

BOI4:00 pmBoise Air Term. Gowen Fld

41h 00m

2 stops

LHR4:00 pmLondon Heathrow

$760

Scandinavian Airlines

Sep 12

LHR6:40 amLondon Heathrow

18h 29m

2 stops

GEG5:09 pmSpokane

Sep 19

GEG11:10 amSpokane

20h 50m

2 stops

LHR4:00 pmLondon Heathrow

$762

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/11

6:40 am-10:34 pm

2 stops22h 54m

Boise Air Term. Gowen Fld

Sat 9/26

10:34 am-5:40 pm

2 stops24h 06m

$755

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/11

6:40 am-6:40 pm

2 stops19h 00m

Boise Air Term. Gowen Fld

Fri 9/18

4:00 pm-4:00 pm

2 stops41h 00m

$760

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 9/12

6:40 am-5:09 pm

2 stops18h 29m

Spokane

Sat 9/19

11:10 am-4:00 pm

2 stops20h 50m

$762

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/11

6:40 am-10:34 pm

2 stops22h 54m

Boise Air Term. Gowen Fld

Sat 9/26

10:34 am-5:40 pm

2 stops24h 06m

$773

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 9/12

6:40 am-5:09 pm

2 stops18h 29m

Spokane

Sat 9/19

1:00 pm-4:25 pm

3 stops19h 25m

$777

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/11

6:40 am-10:34 pm

3 stops22h 54m

Boise Air Term. Gowen Fld

Sat 9/26

10:34 am-5:40 pm

2 stops24h 06m

$780

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/11

6:40 am-10:34 pm

2 stops22h 54m

Boise Air Term. Gowen Fld

Sat 9/26

10:34 am-5:00 pm

3 stops23h 26m

$782

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 12/4

6:40 am-10:54 pm

2 stops23h 14m

Boise Air Term. Gowen Fld

Mon 12/7

4:14 pm-4:00 pm

2 stops40h 46m

$787

Quickest round-trip

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 8/28

6:40 am-7:14 pm

2 stops20h 34m

Spokane

Fri 9/11

1:00 pm-1:35 pm

2 stops16h 35m

$787

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 12/4

6:40 am-10:54 pm

2 stops23h 14m

Boise Air Term. Gowen Fld

Mon 12/7

4:14 pm-4:00 pm

2 stops40h 46m

$788

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 London Heathrow Airport 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

What is the cheapest month to fly to Idaho?

In general, November is the cheapest month to fly from London Heathrow Airport to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $805. If you don’t want to visit Idaho in November, then you should wait until April to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $843.

Can stopping save me money on London Heathrow Airport to Idaho flights?

You could potentially save up to 15% on your flight if you consider stops on a London Heathrow Airport to Idaho flight.

Cheap London Heathrow Airport to Idaho flight deals and tips

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

Fastest flight time	12h 50m
Direct flights	None

The fastest flight from London Heathrow Airport to Idaho takes 12h 50m

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

Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Idaho

When did momondo last update prices for flights from London Heathrow Airport to Idaho?
Prices for flights from London Heathrow Airport to Idaho refresh daily.
How old do you have to be to fly from London Heathrow Airport to Idaho?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Idaho. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Idaho from London which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between London and Idaho by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from London 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.