Cheap flights from Cardiff to Idaho Falls
Cheap return flights from Cardiff to Idaho Falls
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Idaho Falls flight facts
What you need to know
What are the cheapest airlines?
- Ryanair
- EasyJet
- American Airlines
These airlines usually offer the cheapest flights from Cardiff to Idaho Falls.
What airlines fly indirectly?
- Delta Airlines
- United Airlines
- Alaska Airlines
These airlines fly from Cardiff to Idaho Falls, but you’ll have at least one layover.
How long is the flight?
15 hours
This is the shortest flight time from Cardiff to Idaho Falls.
Alternative flights from the UK to Idaho Falls
Check out prices for other routes
Alternative flights from Cardiff
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Cardiff/Idaho Falls route. There are around 35 flights on any given week from the UK to Idaho Falls and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Cardiff to Idaho Falls
Tips and advice from our flight experts
You've searched for flights from Cardiff to Idaho Falls. We've found 25 flights and compared them to give you the best offer. Ryanair is the average cheapest airline for this route, so keep an eye on them. The cheapest offer we've found is £43 for a one-way ticket from Cardiff to Idaho Falls on 08/06/2026 at 10:00.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 10 airlines that operate the 7,800 km flight from Cardiff to Idaho Falls.
To find the best offers, consider booking 2-3 months in advance or looking for last-minute deals. Ryanair often has competitive prices, and the average flight duration is around 15 hours. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our flight + hotel service to save time and money!
Other popular destinations near Idaho Falls
Where other people are flying to
