What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Idaho Falls?

In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls was $215 for a one-way ticket and $364 for a round-trip. Visit our flight page for the latest deals!>/a>

Do I need a passport to fly between Washington, D.C. and Idaho Falls?

A passport is not required to fly from Washington, D.C. to Idaho Falls. Visit our flight page for the latest deals!>/a>

Which airports will I be using when flying from Washington, D.C. to Idaho Falls?

When flying out of Washington, D.C. you will be using Washington, D.C. Dulles Intl. You will be landing at Idaho Falls, also known as Idaho Falls Fanning Field. Visit our flight page for the latest deals!>/a>

Which aircraft models fly most regularly from Washington, D.C. to Idaho Falls?

We unfortunately don’t have that data for this specific route.

Which airline alliances offer flights from Washington, D.C. to Idaho Falls?

oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington, D.C. and Idaho Falls, with oneworld being the most commonly used for this route.

How does KAYAK find such low prices on flights from Washington, D.C. to Idaho Falls?

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 Washington, D.C. to Idaho Falls. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Idaho Falls?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Washington, D.C. to Idaho Falls?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Washington, D.C. with another airline. Booking your flights between Washington, D.C. and IDA can sometimes prove cheaper using this method. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Idaho Falls?

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 to Idaho Falls from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

Which airlines provide the cheapest flights from Washington, D.C. to Idaho Falls?

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to Idaho Falls were found on United Airlines ($378) and American Airlines ($395).

$215 CHEAP FLIGHTS from Washington, D.C. to Idaho Falls (IAD - IDA)

IAD - IDA

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Cheap Flights from Washington, D.C. to Idaho Falls (IAD-IDA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Idaho Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Washington, D.C. to Idaho Falls

Sun, Jun 8 - Fri, Jun 13

11:52 am - 11:48 amIAD-IDA

25h 56m2 stops

6:35 pm - 2:32 pmIDA-IAD

17h 57m2 stops

$364

Find Deal

Tue, Jun 17 - Fri, Jun 20

5:36 pm - 10:51 pmIAD-IDA

7h 15m1 stop

2:25 pm - 12:34 amIDA-IAD

8h 09m1 stop

$378United Airlines

Find Deal

Sun, Aug 31 - Thu, Sep 4

6:27 am - 12:16 pmIAD-IDA

7h 49m1 stop

7:34 am - 4:18 pmIDA-IAD

6h 44m1 stop

$395American Airlines

Find Deal

Sun, Jun 8 - Fri, Jun 13

11:52 am - 11:48 amIAD-IDA

25h 56m3 stops

6:35 pm - 2:32 pmIDA-IAD

17h 57m2 stops

$397

Find Deal

Sun, Aug 31 - Thu, Sep 4

12:35 pm - 10:15 pmIAD-IDA

11h 40m2 stops

3:05 pm - 11:53 pmIDA-IAD

6h 48m1 stop

$400Delta

Find Deal

Fri, Sep 19 - Sat, Sep 27

7:09 am - 12:12 pmIAD-IDA

7h 03m1 stop

7:34 am - 4:18 pmIDA-IAD

6h 44m1 stop

$427American Airlines

Find Deal

Sun, Aug 31 - Thu, Sep 4

12:35 pm - 10:15 pmIAD-IDA

11h 40m2 stops

11:20 am - 12:10 amIDA-IAD

10h 50m2 stops

$429Delta

Find Deal

Tue, Jun 3 - Sun, Jun 8

6:30 am - 10:34 pmIAD-IDA

18h 04m1 stop

6:00 am - 7:36 amIDA-IAD

23h 36m1 stop

$472Alaska Airlines

Find Deal

Tue, Jun 3 - Sun, Jun 8

7:25 pm - 10:34 pmIAD-IDA

29h 09m2 stops

6:00 am - 7:36 amIDA-IAD

23h 36m1 stop

$477Alaska Airlines

Find Deal

Tue, Jun 17 - Fri, Jun 20

6:30 am - 3:22 pmIAD-IDA

10h 52m1 stop

6:15 am - 5:13 pmIDA-IAD

8h 58m1 stop

$725Hawaiian Airlines

Find Deal

Useful Info

KAYAK's insights & trends for Washington, D.C. to Idaho Falls flights

Get data-powered insights and trends into flights from Washington, D.C. to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

Prices

Airlines

What’s the cheapest day of the week to fly from Washington, D.C. to Idaho Falls?

When flying from Washington, D.C. to Idaho Falls, you should consider leaving on a Saturday and avoid Mondays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

Find deals

High season	August
Cheapest flight	$215

Most popular time to fly with an average 1% increase in price.

Flight from Washington, D.C. to Idaho Falls

When to book flights from Washington, D.C. to Idaho Falls

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Idaho Falls?
In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls was $215 for a one-way ticket and $364 for a round-trip.
Do I need a passport to fly between Washington, D.C. and Idaho Falls?
A passport is not required to fly from Washington, D.C. to Idaho Falls.
Which airports will I be using when flying from Washington, D.C. to Idaho Falls?
When flying out of Washington, D.C. you will be using Washington, D.C. Dulles Intl. You will be landing at Idaho Falls, also known as Idaho Falls Fanning Field.
Which aircraft models fly most regularly from Washington, D.C. to Idaho Falls?
We unfortunately don’t have that data for this specific route.
Which airline alliances offer flights from Washington, D.C. to Idaho Falls?
oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington, D.C. and Idaho Falls, with oneworld being the most commonly used for this route.
How does KAYAK find such low prices on flights from Washington, D.C. to Idaho Falls?
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 Washington, D.C. to Idaho Falls.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Idaho Falls?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington, D.C. to Idaho Falls?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Washington, D.C. with another airline. Booking your flights between Washington, D.C. and IDA can sometimes prove cheaper using this method.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Idaho Falls?
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 to Idaho Falls from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Washington, D.C. to Idaho Falls

See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.

Need help choosing which airline to fly with from Washington, D.C. to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.

7.4

United AirlinesOverall score based on 8710 reviews

6.6Food

7.3Comfort

7.1Entertainment

8.1Crew

7.7Boarding

Airline reviews

we were delayed going into and out of Newark Airport by 3-4 hours each way. Excuses/reasons given were misleading. Weather was cited at first when there was NO weather issue. Turns out Newark had a shortage of staff and runway construction. United knew this and should have NOT scheduled flights when they know we would be delayed so long. I will avoid United and EWR airport at all cost going forward. Delta never looked so good.

2.0 MediocreTom, May 2025EWR - MSP

Read more United Airlines reviews

A bit rush for transit. Food and entertainment are not available

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Liked nothing. As per previous segment it was delay delay delay.

I completely missed my flight because the first leg was longer than planned. I had to sleep overnight in the airport because no accommodation was provided and then sent to Trinidad in the morning with an anticipated 7 hour layover before my flight to Georgetown which was now with Caribbean Airlines. I tried twice with customer service to see if they could put me on an earlier flight which had seats available but was told it wasn’t possible.

First class felt like economy, seats were horrible, food was horrible, staff inattentive

Everything you need to know for your flight from Washington, D.C. to Idaho Falls

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on your arrival and departure airports

Idaho Falls (IDA)

Washington, D.C. (IAD)

IAD - IDA

$215 Find Cheap Flights from Washington, D.C. to Idaho Falls

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho Falls

Cheap Flights from Washington, D.C. to Idaho Falls (IAD-IDA)

Recent round-trip flight deals from Washington, D.C. to Idaho Falls

Recent one-way flight deals from Washington, D.C. to Idaho Falls

Recent last minute flight deals from Washington, D.C. to Idaho Falls

KAYAK's insights & trends for Washington, D.C. to Idaho Falls flights

Get data-powered insights and trends into flights from Washington, D.C. to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington, D.C. to Idaho Falls?

When flying from Washington, D.C. to Idaho Falls, you should consider leaving on a Saturday and avoid Mondays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

Which airlines provide the cheapest flights from Washington, D.C. to Idaho Falls?

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to Idaho Falls were found on United Airlines ($378) and American Airlines ($395).

Good to know

When to book flights from Washington, D.C. to Idaho Falls

FAQs for booking Washington, D.C. to Idaho Falls flights

What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Idaho Falls?

In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls was $215 for a one-way ticket and $364 for a round-trip.

Do I need a passport to fly between Washington, D.C. and Idaho Falls?

A passport is not required to fly from Washington, D.C. to Idaho Falls.

Which airports will I be using when flying from Washington, D.C. to Idaho Falls?

When flying out of Washington, D.C. you will be using Washington, D.C. Dulles Intl. You will be landing at Idaho Falls, also known as Idaho Falls Fanning Field.

Which aircraft models fly most regularly from Washington, D.C. to Idaho Falls?

We unfortunately don’t have that data for this specific route.

Which airline alliances offer flights from Washington, D.C. to Idaho Falls?

oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington, D.C. and Idaho Falls, with oneworld being the most commonly used for this route.

How does KAYAK find such low prices on flights from Washington, D.C. to Idaho Falls?

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 Washington, D.C. to Idaho Falls.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Idaho Falls?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Washington, D.C. to Idaho Falls?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Idaho Falls?

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 to Idaho Falls from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Washington, D.C. to Idaho Falls

Everything you need to know for your flight from Washington, D.C. to Idaho Falls

Information on your arrival and departure airports

Cabin class types available on flights to Idaho Falls

Complete your trip to Idaho Falls with a hotel stay or car rental

Find direct flights to and from Washington, D.C. and Idaho Falls

Flights to other popular destinations

Flights from domestic origins to Idaho Falls

Choose which airport to fly into in Washington, D.C.

Find deals for your return flight