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Idaho

$429+ Cheap flights from the United Kingdom to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
fev 27 — mar 61
sex 2/27
sex 3/6
1 adult, Economy
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Cheap flight deals from United Kingdom to Idaho

Cheapest flights from United Kingdom to Idaho
Explore the most affordable flight options available from United Kingdom to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janeiro 28, 2026.

This deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 3/187:40 am
LHR
-
GEG
1 stop17h 11m
United Airlines
seg 3/231:37 pm
GEG
-
LHR
1 stop13h 03m
United Airlines
Deal found 1/27$548
This deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 4/152:50 pm
LHR
-
GEG
1 stop14h 21m
United Airlines
seg 4/207:10 am
GEG
-
LHR
1 stop15h 35m
United Airlines
Deal found 1/27$560
This deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 4/152:50 pm
LHR
-
GEG
1 stop14h 21m
United Airlines
dom 4/197:10 am
GEG
-
LHR
1 stop17h 50m
United Airlines
Deal found 1/28$623
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 2/209:00 am
LHR
-
GEG
2 stops20h 07m
United Airlines
sáb 3/75:00 am
GEG
-
LHR
2 stops16h 55m
United Airlines
Deal found 1/27$712
This Cheapflightsfares deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 3/167:40 am
LHR
-
GEG
2 stops20h 23m
Lufthansa
dom 3/2212:42 pm
GEG
-
LHR
2 stops25h 08m
Lufthansa
Deal found 1/27$714
This Lufthansa deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 2/277:40 am
LHR
-
GEG
2 stops21h 27m
Lufthansa
qui 3/51:37 pm
GEG
-
LHR
1 stop12h 03m
Lufthansa
Deal found 1/27$717
This Lufthansa deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 2/259:30 am
LHR
-
GEG
2 stops19h 47m
Lufthansa
qui 3/512:42 pm
GEG
-
LHR
2 stops16h 48m
Lufthansa
Deal found 1/27$718
This Lufthansa deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 2/206:35 am
LHR
-
GEG
2 stops22h 32m
Lufthansa
dom 3/81:37 pm
GEG
-
LHR
2 stops20h 28m
Lufthansa
Deal found 1/27$721
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 2/2611:35 am
LHR
-
GEG
1 stop17h 42m
Lufthansa
qui 3/57:02 am
GEG
-
LHR
1 stop16h 23m
Lufthansa
Deal found 1/27$731
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 5/46:55 am
LHR
-
GEG
2 stops37h 44m
United Airlines
dom 5/105:00 am
GEG
-
LHR
2 stops42h 40m
United Airlines
Deal found 1/27$733
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 4/209:00 am
LHR
-
BOI
2 stops31h 54m
United Airlines
seg 4/275:00 am
BOI
-
LHR
2 stops18h 55m
United Airlines
Deal found 1/26$778
This Lufthansa deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 2/209:55 am
LCY
-
GEG
2 stops19h 12m
Lufthansa
dom 3/81:37 pm
GEG
-
LCY
2 stops21h 03m
Lufthansa
Deal found 1/27$784

Find flight deals from United Kingdom to Idaho

Keep the following information in mind while searching for United Kingdom to Idaho flight deals. Data was last updated janeiro 28, 2026.

Round-trip from

$548

One-way from

$429
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$776
From United Kingdom to Idaho
Search Deals
One-way flight from United Kingdom to Idaho
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from United Kingdom to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated janeiro 28, 2026.
Use the filters below to find and compare flights from the United Kingdom to Idaho that are best for you.

Fly from

United Kingdom

Fly to

Idaho

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

qua 3/18

7:40 am-5:51 pm

1 stop17h 11m

Spokane

seg 3/23

1:37 pm-9:40 am

1 stop13h 03m

$581

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

qua 4/15

2:50 pm-9:11 pm

1 stop14h 21m

Spokane

seg 4/20

1:43 pm-12:20 pm

1 stop14h 37m

$593

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

qua 4/15

2:50 pm-9:11 pm

1 stop14h 21m

Spokane

dom 4/19

7:10 am-9:00 am

1 stop17h 50m

$623

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

sex 2/20

9:00 am-9:07 pm

2 stops20h 07m

Spokane

sáb 3/7

5:00 am-5:55 am

2 stops16h 55m

$712

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

sex 2/20

7:40 am-9:07 pm

2 stops21h 27m

Spokane

sáb 3/7

1:37 pm-9:40 am

1 stop12h 03m

$717

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

sex 2/20

6:35 am-9:07 pm

2 stops22h 32m

Spokane

dom 3/8

12:42 pm-12:00 pm

1 stop16h 18m

$717

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

qui 3/12

11:10 am-12:41 pm

2 stops32h 31m

Spokane

qui 3/19

7:02 am-7:25 am

1 stop17h 23m

$717

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

ter 3/10

6:35 am-9:03 pm

2 stops21h 28m

Spokane

ter 3/17

7:02 am-12:00 pm

1 stop21h 58m

$717

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

qui 2/26

9:30 am-9:17 pm

2 stops19h 47m

Spokane

sex 3/6

7:02 am-12:00 pm

1 stop20h 58m

$718

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

qui 2/19

9:30 am-9:17 pm

2 stops19h 47m

Spokane

sáb 3/7

1:37 pm-9:40 am

1 stop12h 03m

$718

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 60 results
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Best time to book a flight from United Kingdom to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from United Kingdom with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Idaho

What is the cheapest month to book a flight from United Kingdom to Idaho?

Currently, March is the cheapest month in which you can book a flight from United Kingdom to Idaho (average of $686). Flying from United Kingdom to Idaho in July is currently the most expensive (average of $898). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to Idaho?

    Departing from United Kingdom to Idaho will take you 17h 11m. The distance between United Kingdom and Idaho is about 4643 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from United Kingdom to Idaho that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Idaho.

  • Can I find deals for business class flights from United Kingdom to Idaho?

    Yes. Cheapflights offers flight deals from United Kingdom to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Idaho?

    Currently, March is the cheapest month in which you can book a flight from United Kingdom to Idaho (average of $686). Flying from United Kingdom to Idaho in July is currently the most expensive (average of $898). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for United Kingdom to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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