£205 Cheap Flights from Washington (IAD) to Idaho Falls (IDA)

View £205 flight on Tue, 26 Aug 2025Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Idaho Falls Regional Airport (IDA)

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Cheap Flights from Washington (IAD) to Idaho Falls (IDA)

Prices were available within the past 7 days and start at £205 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Washington (IAD) to Idaho Falls (IDA)

February is typically the cheapest month to fly

From £269 - £616 per traveller.

Graph displaying average flight prices per month

Flight from Washington to Idaho Falls route information
Origin airport
Washington Dulles Intl.
Destination airport
Idaho Falls Regional
Distance
2900 km

Compare flights from Washington to Idaho Falls easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to Idaho Falls. Operating between them flights per day, 16 airlines cover the route. And fly direct, getting you to Idaho Falls Regional in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to Idaho Falls Regional.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Washington Dulles Intl. (IAD) to Idaho Falls Regional (IDA)

The easiest way to view the best deals on flights from Washington to Idaho Falls today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to Idaho Falls Regional start at just and range up to .  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Washington and Idaho Falls
  • booking your flight during , the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Washington to Idaho Falls flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to Idaho Falls Regional for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from IAD to Idaho Falls Regional Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip journey from IAD to Idaho Falls Regional Airport was . Fares this good don't last forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to Idaho Falls Regional Airport?
Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.
How do I find cheap flights from IAD to Idaho Falls Regional Airport (IDA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for IAD to Idaho Falls Regional Airport (IDA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Idaho Falls Regional Airport?
It's around 2,900 kilometres between Chantilly and Idaho Falls, so expect to be up in the air for a while. Keep yourself occupied by packing things like crossword puzzles or a good old-fashioned book.
Which airlines fly direct from Dulles Intl. Airport to Idaho Falls Regional Airport?
If you want to travel straight from Washington Dulles Intl. Airport (IAD) to Idaho Falls Regional Airport, you'll need to book a flight with one or more stops. Unfortunately, there aren't any airlines that fly directly on this route.
Are Dulles Intl. Airport to Idaho Falls Regional Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices go up and down like a yo-yo, so there are no guarantees. While last-minute flight deals between Dulles Intl. Airport and IDA are possible, it also makes sense to monitor prices well before you fly. In fact, some carriers publish their prices up to 12 months before the departure date. Expedia is constantly updating the biggest airfare bargains around, so keep checking back and be ready to book when the fares dip.

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