£446 Cheap Flights to Idaho

View £446 flight on Tue, 1 Sept 2026Opens in a new window

Popular airlines to Idaho

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • Frontier Airlines

  • Air Canada

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Cheap round-trip flights to Idaho

Prices were available within the past 7 days and start at £446 for one-way flights and £609 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, 8 Jun - Mon, 29 Jun
LHR
London
PUW
Pullman
£609 Return, found 5 days ago
£609
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 8 Jun from London to Pullman, returning Mon, 29 Jun, priced at £609 found 5 days ago
Lufthansa
Tue, 8 Sept - Tue, 15 Sept
LHR
London
GEG
Spokane
£659 Return, found 1 day ago
£659
Return
found 1 day ago
Select Lufthansa flight, departing Tue, 8 Sept from London to Spokane, returning Tue, 15 Sept, priced at £659 found 1 day ago
Lufthansa
Tue, 1 Sept - Wed, 23 Sept
LHR
London
BOI
Boise
£660 Return, found 1 day ago
£660
Return
found 1 day ago
Select Lufthansa flight, departing Tue, 1 Sept from London to Boise, returning Wed, 23 Sept, priced at £660 found 1 day ago
Air Canada
Tue, 6 Oct - Wed, 21 Oct
LHR
London
GEG
Spokane
£690 Return, found 5 days ago
£690
Return
found 5 days ago
Select Air Canada flight, departing Tue, 6 Oct from London to Spokane, returning Wed, 21 Oct, priced at £690 found 5 days ago
Alaska Airlines
Tue, 3 Nov - Tue, 10 Nov
LHR
London
IDA
Idaho Falls
£700 Return, found 1 day ago
£700
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 3 Nov from London to Idaho Falls, returning Tue, 10 Nov, priced at £700 found 1 day ago
United
Tue, 1 Sept - Mon, 28 Sept
LHR
London
BOI
Boise
£700 Return, found 23 hours ago
£700
Return
found 23 hours ago
Select United flight, departing Tue, 1 Sept from London to Boise, returning Mon, 28 Sept, priced at £700 found 23 hours ago
American Airlines
Wed, 2 Sept - Wed, 9 Sept
LGW
London
GEG
Spokane
£726 Return, found 3 days ago
£726
Return
found 3 days ago
Select American Airlines flight, departing Wed, 2 Sept from London to Spokane, returning Wed, 9 Sept, priced at £726 found 3 days ago
Scandinavian Airlines
Fri, 29 May - Fri, 5 Jun
LHR
London
BOI
Boise
£727 Return, found 7 hours ago
£727
Return
found 7 hours ago
Select Scandinavian Airlines flight, departing Fri, 29 May from London to Boise, returning Fri, 5 Jun, priced at £727 found 7 hours ago
Alaska Airlines
Wed, 2 Sept - Fri, 11 Sept
LHR
London
MSO
Missoula
£730 Return, found 1 day ago
£730
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 2 Sept from London to Missoula, returning Fri, 11 Sept, priced at £730 found 1 day ago
Condor
Thu, 24 Sept - Tue, 29 Sept
LGW
London
BOI
Boise
£736 Return, found 4 days ago
£736
Return
found 4 days ago
Select Condor flight, departing Thu, 24 Sept from London to Boise, returning Tue, 29 Sept, priced at £736 found 4 days ago

Trending flights to Idaho

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, 8 Jun - Mon, 29 Jun
LHR
London
PUW
Pullman
£609 Return, found 5 days ago
£609
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 8 Jun from London to Pullman, returning Mon, 29 Jun, priced at £609 found 5 days ago

Frequently asked questions

How do I find cheap flights to Idaho that have flexible change policies?
By using our smart "No change fee" filter, that's how. Simply type in your origin, destination and dates, click "Search," then tick the checkbox directly under the "Flexible change policies" heading (it's on the left of your screen). Expedia makes it simple to find flexible, low-cost fares to Idaho.
Which airlines fly to Idaho?
Wherever you want to wander in Idaho and whenever you're hoping to depart, you'll find your perfect flight with one of these top airlines:

  • Alaska Airlines - 815 flights to or near Idaho each month, including 754 flights to Boise Airport (BOI) and 30 flights to Friedman Memorial Airport (SUN) per month.
  • Delta Air Lines - 637 flights to or near Idaho each month, including 489 flights to Boise Airport (BOI) and 86 flights to Idaho Falls Regional Airport (IDA) per month.
  • United Airlines - 438 flights to or near Idaho each month, including 303 flights to Boise Airport (BOI) and 91 flights to Idaho Falls Regional Airport (IDA) per month.

How can I find cheap tickets to Idaho?
One of the best ways to find cheap tickets to Idaho is to be flexible with your travel dates. Search for your flights, then click "flexible dates" above the results. It'll bring up the cheapest prices for nearby days. The best price for a flight to Idaho in the last seven days was £609. Booking well ahead will generally help you get an even bigger bargain.
How much is a flight to Idaho?
One-way flights departing from London (LHR) sold for as little as £446 in the last seven days. During this time, the price of a round-trip fare to Idaho varied between £609 and £736. If you find a deal, book quickly — these prices don't hang about.
What are the most popular airports to fly into in Idaho?
Touch down at any one of these main airports in Idaho and you'll be in the perfect position to experience all that this renowned region has to offer:

  • Boise Airport (BOI) - 1,994 flights per month.
  • Idaho Falls Regional Airport (IDA) - 334 flights per month.
  • Friedman Memorial Airport (SUN) - 134 flights per month.

When is the cheapest time to fly to Idaho?
Depart for Idaho earlier in the week and you'll usually be rewarded with lower fares. Tuesday is generally the cheapest day to jet off, followed closely by Monday. If you're eager to avoid the most expensive flights, keep clear of Saturdays.
How much is a plane ticket to Idaho?
In the last seven days, plane fares to Idaho fluctuated between £609 and £736. Prices tend to go up over time, so book a top deal today.
What is the best time to go to Idaho?
Summer starts June 20 in the Northern Hemisphere, and these warmer months are a terrific time to tour the thrilling Idaho city of Boise. Average temperatures vary between 16ºC and 27ºC throughout this season. The largest crowds are found here in May, July and August.
What months are the cheapest to book a flight to Idaho?
The most cost-effective month to land a flight to Idaho is February, while prices are at a premium in December. Steer clear of this month if you're on a budget.

Book with confidence

Top tips for booking flights to Idaho from UK

Get ready to fly to Idaho

Prepare your luggage and book your flights to Idaho with Expedia. We offer a seamless flight booking experience, with a wide range of Idaho plane tickets to choose from. If you need help finding some of the best deals for cheap flights to Idaho in 2026, we are always available to assist you. Book your flights to Idaho today and let the adventure begin!

Find the best tickets to Idaho

To find some of the best tickets to Idaho in 2026, use Expedia's powerful search engine to compare dates and the different departure and arrival airports for your trip. Whether you're after direct flights to Idaho or last-minute flights to Idaho, you can filter and sort your search results, making it easy to find the ideal flight to Idaho.

Airlines fly to Idaho

There are 20 different airlines that fly to Idaho including some of the most trusted names in the business. To book flights to Idaho with your favourite airline, take a look at Expedia's flight listings and try out different dates to find some of the best Idaho plane tickets.

Find the cheapest flights to Idaho

By booking early you may find some of the best deals for Idaho flights from the UK, including Idaho direct flights. You can usually find affordable and cheap flights to Idaho, whether one-way from £446 or round-trip from £609, with Expedia if you book your trip far enough in advance.

Find the best airports for cheap flights to Idaho

Try searching for different Idaho airports with Expedia to find some of the cheapest flights to Idaho. Flights from London (LHR) to Pullman (PUW) usually have the lowest price from £446.

Why book your flights to Idaho with Expedia

Expedia offers great deals on Idaho air fares from £446 to cater to every budget. Not only is Expedia one of the top platforms to book flights to Idaho from the UK, it is also your one-stop shop for booking hotels, car rentals, and more.

 

*Prices and availability are subject to change. Additional terms apply.

Top tips for booking flights to Idaho from UK

Travel information

Idaho Flights Information

Airlines serving
Alaska Airlines, Lufthansa, American Airlines, KLM, Air Canada, Virgin Atlantic, Air France, United, Scandinavian Airlines, Condor
Roundtrip price
from £609
Idaho Flights Information

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