£231 Find Cheap Flights from Idaho to the United Kingdom

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Good to know - Cheap tickets from Idaho to the United Kingdom

Low season

January

High season

September

Cheapest flight

£231
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly and prices are also 26% lower on average.
Flight from Spokane to Edinburgh

FAQs for booking flights from Idaho to the United Kingdom

  • How does KAYAK find such low prices on flights from Idaho to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho to the United Kingdom is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Idaho to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Idaho to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho to the United Kingdom?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Idaho to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to the United Kingdom?

    Based on KAYAK data, the cheapest day to fly to the United Kingdom is Wednesday when return tickets can be as cheap as £492. On the other hand, the most expensive day to fly is Wednesday, when return prices are £492 on average.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the afternoon, when round-trip flights cost £712 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the evening, which is peak travel time and where the average cost of a ticket is £813.

  • What is the cheapest month to fly from Idaho to the United Kingdom?

    The cheapest month for flights from Idaho to the United Kingdom is October, when tickets cost £560 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is £1,016 and £866 respectively.

  • How far in advance should I book a flight from Idaho to the United Kingdom?

    To get a below-average price on the flight from Idaho to the United Kingdom, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

  • How long is the flight to the United Kingdom?

    An average direct flight from Idaho to the United Kingdom takes 19h 41m, covering a distance of 4647 miles. The shortest route is Idaho Falls (IDA) to London Heathrow Airport (LHR) with an average flight time of 12h 15m.

  • What are the most popular destinations in the United Kingdom?

    Based on KAYAK flight searches, the most popular destination is London (79% of total searches to the United Kingdom). The next most popular destinations are Edinburgh (16%) and Manchester (4%). Searches for flights to Birmingham (1%) and to Cardiff (0%) are also popular.

Book cheap flights from Idaho to the United Kingdom

Cheapest flights to the United Kingdom from Idaho found in 2025

Recent return flight deals

28/9Sun
1 stopDelta
15h 22mBOI-EDI
22/10Wed
2 stopsDelta
21h 59mEDI-BOI
£503
14/9Sun
1 stopDelta
22h 35mBOI-LHR
8/10Wed
2 stopsDelta
19h 29mLHR-BOI
£521
3/9Wed
1 stopAmerican Airlines
15h 58mBOI-LHR
16/9Tue
1 stopAmerican Airlines
17h 44mLHR-BOI
£528
3/9Wed
2 stopsScandinavian Airlines
28h 02mBOI-LHR
16/9Tue
2 stopsScandinavian Airlines
23h 40mLHR-BOI
£548
3/9Wed
2 stopsScandinavian Airlines
24h 52mBOI-LHR
16/9Tue
3 stopsScandinavian Airlines
23h 15mLHR-BOI
£550
28/9Sun
1 stopUnited Airlines
12h 52mBOI-EDI
22/10Wed
1 stopUnited Airlines
14h 04mEDI-BOI
£559
3/9Wed
1 stopUnited Airlines
11h 41mBOI-LHR
16/9Tue
2 stopsUnited Airlines
26h 41mLHR-BOI
£575
14/8Thu
2 stopsAmerican Airlines
18h 54mGEG-GLA
24/8Sun
2 stopsAmerican Airlines
18h 31mGLA-GEG
£587
3/9Wed
1 stopFinnair
14h 09mBOI-LHR
16/9Tue
1 stopFinnair
17h 44mLHR-BOI
£588
26/8Tue
2 stopsFinnair
27h 25mBOI-EDI
1/9Mon
2 stopsFinnair
32h 41mEDI-BOI
£597

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Recent one-way flight deals

30/5Fri
3 stops
56h 02mGEG-EDI
£231
31/5Sat
3 stops
42h 55mGEG-EDI
£260
23/7Wed
2 stopsDelta
18h 20mBOI-LGW
£330
21/7Mon
2 stopsDelta
15h 00mBOI-LHR
£330
27/8Wed
1 stopKLM
15h 22mBOI-EDI
£364
21/7Mon
3 stopsUnited Airlines
28h 20mBOI-LHR
£365
19/9Fri
2 stopsWestJet
21h 25mBOI-EDI
£371
31/8Sun
2 stopsUnited Airlines
44h 50mGEG-MAN
£377
12/9Fri
1 stopKLM
12h 20mGEG-LHR
£397
1/7Tue
2 stopsWestJet
34h 35mBOI-EDI
£582

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Last minute flights from Idaho to the United Kingdom

Last minute flight, train and bus deals

2/5Fri
multi-stopDelta
18h 25mBOI-LHR
15/5Thu
multi-stopDelta
19h 42mLHR-BOI
£689
2/5Fri
multi-stopDelta
15h 25mBOI-LHR
15/5Thu
multi-stopDelta
17h 27mLHR-BOI
£693
2/5Fri
multi-stopDelta
14h 00mBOI-LHR
15/5Thu
multi-stopDelta
13h 47mLHR-BOI
£696
4/5Sun
multi-stopUnited Airlines
22h 51mGEG-LHR
14/5Wed
multi-stopUnited Airlines
35h 08mLHR-GEG
£701
4/5Sun
multi-stopAir Canada
17h 06mGEG-LHR
14/5Wed
multi-stopAir Canada
30h 33mLHR-GEG
£705
4/5Sun
multi-stopKLM
14h 40mGEG-LHR
14/5Wed
multi-stopKLM
15h 19mLHR-GEG
£718
4/5Sun
multi-stop
17h 06mGEG-LHR
14/5Wed
multi-stop
28h 48mLHR-GEG
£731
2/5Fri
multi-stopUnited Airlines
16h 55mBOI-EDI
11/5Sun
multi-stopUnited Airlines
44h 45mEDI-BOI
£752
4/5Sun
multi-stopAir Canada
19h 06mGEG-LHR
14/5Wed
multi-stopAir Canada
28h 48mLHR-GEG
£805
2/5Fri
multi-stop
18h 35mBOI-LHR
15/5Thu
multi-stop
19h 12mLHR-BOI
£1,062

Search by stops

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Everything you need to know for your flight to the United Kingdom

Cabin class types available on flights to Idaho

Cabin classes available on flights to Idaho. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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