£189 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 seasonJanuary
High seasonSeptember
Cheapest flight£189
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly and prices are also 6% lower on average.
Flight from Spokane to London Gatwick Airport

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 £485. On the other hand, the most expensive day to fly is Wednesday, when return prices are £485 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 £551 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is £1,031 and £860 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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

  • How long is the flight to the United Kingdom?

    An average direct flight from Idaho to the United Kingdom takes 19h 03m, covering a distance of 4647 miles. The shortest route is Spokane (GEG) to London Heathrow Airport (LHR) with an average flight time of 11h 42m.

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

    Based on KAYAK flight searches, the most popular destination is London (82% of total searches to the United Kingdom). The next most popular destinations are Edinburgh (13%) 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

19/8Tue
2 stopsAir Canada
18h 30mBOI-LHR
29/8Fri
2 stopsAir Canada
43h 51mLHR-BOI
£448
18/8Mon
2 stopsAir Canada
29h 48mBOI-LHR
29/8Fri
2 stopsAir Canada
42h 45mLHR-BOI
£452
3/9Wed
1 stopUnited Airlines
11h 58mBOI-LHR
16/9Tue
2 stopsUnited Airlines
19h 08mLHR-BOI
£454
3/9Wed
2 stopsUnited Airlines
17h 00mBOI-LHR
16/9Tue
2 stopsUnited Airlines
19h 08mLHR-BOI
£457
19/8Tue
1 stopDelta
19h 30mBOI-LHR
26/8Tue
2 stopsDelta
19h 20mLHR-BOI
£459
3/8Sun
1 stopDelta
20h 50mBOI-LHR
12/8Tue
2 stopsDelta
19h 01mLHR-BOI
£460
4/8Mon
1 stopKLM
12h 40mGEG-LHR
14/8Thu
1 stopKLM
16h 39mLHR-GEG
£465
2/8Sat
1 stopIberia
34h 25mBOI-LHR
12/8Tue
1 stopIberia
20h 23mLHR-BOI
£469
25/8Mon
1 stopKLM
14h 49mGEG-LHR
1/9Mon
2 stopsKLM
16h 15mLHR-GEG
£497
2/8Sat
1 stopIberia
34h 25mBOI-LHR
11/8Mon
1 stopIberia
18h 13mLHR-BOI
£506

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Recent one-way flight deals

22/9Mon
1 stop
19h 05mGEG-LGW
£189
24/9Wed
2 stops
41h 25mBOI-LGW
£201
24/9Wed
2 stops
27h 20mBOI-LHR
£214
28/7Mon
1 stop
20h 50mGEG-LGW
£227
24/9Wed
1 stopUnited Airlines
16h 25mBOI-LHR
£293
27/10Mon
1 stopUnited Airlines
13h 30mGEG-LHR
£293
26/11Wed
2 stopsAir Canada
22h 10mGEG-LHR
£295
5/8Tue
1 stopVirgin Atlantic
15h 05mBOI-LHR
£323
27/8Wed
2 stopsAmerican Airlines
18h 00mBOI-EDI
£323
27/8Wed
3 stopsAir Canada
19h 20mBOI-EDI
£331

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Last minute flights from Idaho to the United Kingdom

Last minute flight, train and bus deals

11/7Fri
multi-stop
18h 15mGEG-LGW
13/7Sun
multi-stop
38h 07mLGW-GEG
£978
12/7Sat
multi-stop
19h 37mBOI-LGW
19/7Sat
multi-stop
19h 09mLGW-BOI
£1,026
12/7Sat
multi-stop
34h 09mBOI-LGW
19/7Sat
multi-stop
19h 09mLGW-BOI
£1,039
11/7Fri
multi-stop
19h 37mBOI-LGW
13/7Sun
multi-stop
18h 59mLGW-BOI
£1,074
12/7Sat
multi-stopDelta
18h 10mBOI-LGW
19/7Sat
multi-stopDelta
18h 59mLGW-BOI
£1,213
11/7Fri
multi-stopScandinavian Airlines
18h 20mGEG-LHR
13/7Sun
multi-stopScandinavian Airlines
29h 05mLHR-GEG
£1,282
11/7Fri
multi-stopScandinavian Airlines
23h 15mGEG-LHR
13/7Sun
multi-stopScandinavian Airlines
29h 05mLHR-GEG
£1,287
11/7Fri
multi-stopUnited Airlines
16h 30mBOI-LHR
13/7Sun
multi-stopUnited Airlines
35h 02mLHR-BOI
£1,404
11/7Fri
multi-stopUnited Airlines
16h 08mGEG-LHR
13/7Sun
multi-stopUnited Airlines
35h 18mLHR-GEG
£1,405
11/7Fri
multi-stopVirgin Atlantic
12h 00mBOI-LHR
13/7Sun
multi-stopVirgin Atlantic
18h 34mLHR-BOI
£1,421

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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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