Cheap Flights from Washington Dulles to Idaho Falls

Compare Washington Dulles to Idaho Falls flight deals

Find the cheapest month or even day of the year to fly to Idaho Falls

Book the best Idaho Falls fare with no extra fees

Flight deals from Washington Dulles to Idaho Falls

Looking for a cheap last-minute deal or the best round-trip flight from Washington Dulles to Idaho Falls? Find the lowest prices on one-way and round-trip tickets right here.

Idaho Falls.AED 1,226 per passenger.Departing Tue, Mar 3, returning Tue, Mar 10.Round-trip flight with United.Outbound indirect flight with United, departing from Washington Dulles on Tue, Mar 3, arriving in Idaho Falls.Inbound indirect flight with United, departing from Idaho Falls on Tue, Mar 10, arriving in Washington Dulles.Price includes taxes and charges.From AED 1,226, select.

Idaho Falls.AED 1,438 per passenger.Departing Sat, Jan 31, returning Wed, Feb 4.Round-trip flight with United.Outbound indirect flight with United, departing from Washington Dulles on Sat, Jan 31, arriving in Idaho Falls.Inbound indirect flight with United, departing from Idaho Falls on Wed, Feb 4, arriving in Washington Dulles.Price includes taxes and charges.From AED 1,438, select.

Idaho Falls.AED 1,465 per passenger.Departing Sat, Feb 7, returning Sat, Feb 14.Round-trip flight with United.Outbound indirect flight with United, departing from Washington Dulles on Sat, Feb 7, arriving in Idaho Falls.Inbound indirect flight with United, departing from Idaho Falls on Sat, Feb 14, arriving in Washington Dulles.Price includes taxes and charges.From AED 1,465, select.

Idaho Falls.AED 1,581 per passenger.Departing Tue, Jul 21, returning Sat, Jul 25.Round-trip flight with United.Outbound indirect flight with United, departing from Washington Dulles on Tue, Jul 21, arriving in Idaho Falls.Inbound indirect flight with United, departing from Idaho Falls on Sat, Jul 25, arriving in Washington Dulles.Price includes taxes and charges.From AED 1,581, select.

Idaho Falls.AED 2,579 per passenger.Departing Wed, Jun 24, returning Wed, Jul 8.Round-trip flight with United.Outbound indirect flight with United, departing from Washington Dulles on Wed, Jun 24, arriving in Idaho Falls.Inbound indirect flight with United, departing from Idaho Falls on Wed, Jul 8, arriving in Washington Dulles.Price includes taxes and charges.From AED 2,579, select.

Idaho Falls.AED 2,688 per passenger.Departing Tue, Mar 31, returning Sat, Apr 4.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Washington Dulles on Tue, Mar 31, arriving in Idaho Falls.Inbound indirect flight with Alaska Airlines, departing from Idaho Falls on Sat, Apr 4, arriving in Washington Dulles.Price includes taxes and charges.From AED 2,688, select.

Find the cheapest month to fly from Washington Dulles to Idaho Falls

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Idaho Falls flights are currently cheapest in March.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Washington Dulles to Idaho Falls: Alternative routes

Compare routes from Washington Dulles to Idaho Falls below. You may find an airport to fly into that's cheaper, faster, or easier than Idaho Falls.

Idaho Falls

4km from central Idaho Falls

ClosestCheapest

from AED 1,226

Search flights

Pocatello

79km from central Idaho Falls

from AED 2,556

Search flights

Washington, D.C. to Idaho Falls: Flight information

The things to know before you go.

Cheapest flight found	AED 1,226
Cheapest month to fly	March

Finding cheap flights from Washington Dulles to Idaho Falls: Frequently asked questions

How much are round-trip flights from Washington Dulles to Idaho Falls?

The best price we found for a round-trip flight from Washington Dulles to Idaho Falls is AED 1,226. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Washington Dulles to Idaho Falls?

Currently, there are no airlines that fly direct from Washington Dulles to Idaho Falls. But we found flights with one or more stops from AED 1,226.

How many flights are there a week from Washington Dulles to Idaho Falls?

There are no flights flying from Washington Dulles to Idaho Falls, as of January 2026.

When is the cheapest time to fly from Washington Dulles to Idaho Falls?

The cheapest month to fly from Washington Dulles to Idaho Falls is usually March.

Which upcoming date is cheapest to fly from Washington Dulles Airport to Idaho Falls Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Idaho Falls Airport on Tuesday, March 3, 2026.

Can I get a direct flight from Washington Dulles Airport to Idaho Falls Airport?

No airlines currently offer direct flights between Washington Dulles Airport and Idaho Falls Airport. Most routes have one or more stops.

How can I find the best flight deal to Idaho Falls?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Idaho Falls but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Idaho Falls?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Idaho Falls is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Washington Dulles Airport to Idaho Falls?

Currently, United offers the cheapest flight tickets to Idaho Falls.

Traveling from Washington Dulles International Airport (IAD) to Idaho Falls Regional Airport (IDA): what you need to know

For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you'll have plenty of time to catch your IAD to IDA flight.
Traveling during a peak month such as April? School holidays and other high seasons can mean longer lines and delays at check-in and security. Play things extra safe and arrive up to four hours before an international flight and two hours before a domestic departure.
Think about adding a stopover when booking your ticket from Washington Dulles International Airport to Idaho Falls Regional Airport. Simply uncheck 'Direct flights only' to break up your journey, or perhaps see a new city along the way. Check out these options between IAD and IDA:
- Denver International Airport
- Salt Lake City International Airport
- Harry Reid Airport (formerly McCarran Airport)

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Idaho Falls Regional Airport (IDA)

At the moment, AED 728 is the lowest price we've seen for a one-way Washington Dulles International Airport to Idaho Falls Regional Airport flight. The best price for a return ticket is AED 1,226. Bear in mind that fares could change due to demand when booking.
To score cheap tickets from IAD to IDA, book in advance. Airlines tend to offer their best fares when flights are first released.
The 'Whole month' search tool shows you the cheapest flights from Washington Dulles International Airport to Idaho Falls Regional Airport throughout the month. It's a good way to find a bargain if your trip dates are flexible.
There's no need to check back in every day to see if fares have dropped when you set up a Price Alert. We'll update you the moment there's a new deal on cheap flights from IAD to IDA.
Pick your ideal departure and arrival times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from Washington Dulles International Airport to Idaho Falls Regional Airport.

Handy information about Washington Dulles International Airport (IAD)

IAD is located at 1 Saarinen Circle.
Of all flights leaving Washington Dulles International Airport, 74.39% arrive as scheduled at their destination.
Central Washington DC to Washington Dulles International Airport is around 56 kilometers. Depending on traffic, it'll take you about 50 minutes to get there if you're driving, catching a cab or ride-sharing.
Catching public transport? You can expect a journey time of around 3 hours 25 minutes.
Need a convenient hotel close to IAD? If you're boarding an early flight from Washington Dulles International Airport to Idaho Falls Regional Airport, these stays will have you moments from check-in:

Arriving at Idaho Falls Regional Airport (IDA)

The last thing you need is a lengthy journey to your hotel if you're getting in late on a Washington Dulles International Airport to Idaho Falls Regional Airport flight. Book one of these accommodation options near IDA instead:
Begin your adventure by picking up an Idaho Falls Regional Airport rental car. Grab your wheels from Budget, Avis or Alamo and explore beyond Idaho Falls's main sights.
Book your vehicle from Idaho Falls Regional Airport a few weeks in advance to lock in the best possible deal. If you're traveling during a busy period, you may want to book even earlier.

Getting from Idaho Falls Regional Airport (IDA) to central Idaho Falls

You'll find IDA at 2140 North Skyline.
From Idaho Falls Regional Airport, Idaho Falls is approximately 5 kilometers away. It takes around 10 minutes to get to the center driving.
If you're traveling by public transport, expect a journey of roughly 1 hour.

When to fly to Idaho Falls Regional Airport (IDA)

July is the most popular month for flights from Washington Dulles International Airport to Idaho Falls Regional Airport. To avoid the crowds, travel to Idaho Falls in February.
Lock in your flight from Washington Dulles International Airport to Idaho Falls Regional Airport for July if you want to explore Idaho Falls during its warmest month. You can expect temperatures of between 11ºC (52ºF) and 35ºC (95ºF).
If you like traveling in cooler conditions, look for a cheap ticket from IAD to IDA in January. Average temperatures are between -15ºC (5ºF) and 1ºC (34ºF) then.

Explore more of United States

Salt Lake City is just one of the many cities in United States waiting to be explored after you've experienced Idaho Falls. Around 306 kilometers away to the south, top sights here include Temple Square, Utah State Capitol and Red Butte Garden.
Around 338 kilometers west of Idaho Falls, Boise is another favorite stop in United States. No visit is complete without checking out Idaho State Capitol Building, Old Idaho Penitentiary and Zoo Boise.