$175 Find Cheap Flights from Idaho Falls to District of Columbia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to District of Columbia departing on 5/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to District of Columbia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to District of Columbia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to District of Columbia, as well as popular online travel agencies
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Flight Deals

Book Cheap Idaho Falls to District of Columbia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to District of Columbia 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.

Recent round-trip flight deals from Idaho Falls to District of Columbia

Fri, May 22 - Tue, May 26
United Airlines Logo
4:10 pm - 12:45 am
IDA
-
IAD
6h 35m
1 stop
United Airlines Logo
6:30 am - 1:25 pm
IAD
-
IDA
8h 55m
1 stop
$349United Airlines
Wed, Aug 5 - Tue, Aug 11
United Airlines Logo
4:10 pm - 12:45 am
IDA
-
IAD
6h 35m
1 stop
United Airlines Logo
6:30 am - 1:24 pm
IAD
-
IDA
8h 54m
1 stop
$384United Airlines
Thu, May 28 - Mon, Jun 1
Alaska Airlines Logo
6:00 am - 4:35 pm
IDA
-
IAD
8h 35m
1 stop
Alaska Airlines Logo
6:00 am - 3:26 pm
IAD
-
IDA
11h 26m
1 stop
$399Alaska Airlines
Fri, Aug 14 - Sat, Aug 22
United Airlines Logo
2:30 pm - 11:24 pm
IDA
-
IAD
6h 54m
1 stop
United Airlines Logo
6:30 am - 1:24 pm
IAD
-
IDA
8h 54m
1 stop
$408United Airlines
Wed, Aug 5 - Tue, Aug 11
United Airlines Logo
2:30 pm - 11:32 pm
IDA
-
IAD
7h 02m
1 stop
United Airlines Logo
6:30 am - 1:24 pm
IAD
-
IDA
8h 54m
1 stop
$428United Airlines
Sat, May 23 - Tue, May 26
Alaska Airlines Logo
6:00 am - 4:38 pm
IDA
-
IAD
8h 38m
1 stop
Alaska Airlines Logo
7:37 pm - 1:17 pm
IAD
-
IDA
19h 40m
2 stops
$431Alaska Airlines
Sat, May 23 - Tue, May 26
Delta Logo
6:54 pm - 9:48 am
IDA
-
IAD
12h 54m
2 stops
Delta Logo
6:08 am - 2:34 pm
IAD
-
IDA
10h 26m
2 stops
$472Delta
Wed, Aug 5 - Tue, Aug 11
Delta Logo
11:28 am - 11:56 pm
IDA
-
DCA
10h 28m
2 stops
Delta Logo
6:00 am - 2:27 pm
DCA
-
IDA
10h 27m
2 stops
$494Delta
Sun, May 10 - Fri, May 15
American Airlines Logo
7:48 am - 11:00 pm
IDA
-
DCA
13h 12m
2 stops
American Airlines Logo
5:15 pm - 11:39 pm
DCA
-
IDA
8h 24m
1 stop
$519American Airlines
Thu, May 21 - Tue, May 26
American Airlines Logo
12:44 pm - 8:59 pm
IDA
-
DCA
6h 15m
1 stop
American Airlines Logo
7:41 am - 1:38 pm
DCA
-
IDA
7h 57m
1 stop
$592American Airlines
Booking Insights

KAYAK's insights & trends for Idaho Falls to District of Columbia flights

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

How much is a round-trip flight from Idaho Falls to District of Columbia?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Idaho Falls to District of Columbia departing in May.

What is the cheapest month to fly from Idaho Falls to District of Columbia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to District of Columbia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Idaho Falls to District of Columbia is February, when tickets cost $265 (return) on average. On the other hand, the most expensive months are November and January, when the average cost of round-trip tickets is $715 and $675 respectively.

Good to know

Low seasonFebruary
Cheapest flight$175
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Idaho Falls to Washington Dulles Airport

FAQs - booking District of Columbia flights

  • How does KAYAK find such low prices on flights from Idaho Falls to District of Columbia?

    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 Idaho Falls to District of Columbia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to District of Columbia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho Falls to District of Columbia 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 Idaho Falls to District of Columbia?

    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 from Idaho Falls to District of Columbia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho Falls to District of Columbia?

    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 from Idaho Falls to District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Idaho Falls to District of Columbia

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to District of Columbia. 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 Idaho Falls to District of Columbia? 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 9677 reviews
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
6.6Food
Airline reviews

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

8.0 ExcellentAnonymous, Apr 2026
DEN - IAD
Read more United Airlines reviews

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

I liked that it was on time, however, the food was not good.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

It was great. Smooth flight, comfortable, left on time and landed on time.

Horrible experience upon landing. Probably more due to DCA utter incompetence than AA.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

Poor communication ahead of time about flight delays and old planes/other equipment.

Never going to fly your airline again if it can be avoided.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Other than nearly three hour delay for maintenance issues, everything went smooth

Snow delayed boarding several times, which I understand happens. Issue I had was that after we did board, pilot told us we were going to roll out to be de-iced, then on our way. We were de-iced once, taxied to the tarmac and then stopped. Sat for another 30 minutes or so, the another de-icing. Then we rolled out to a parking spot, only to sit for another hour due to a traffic stop in DCA, which I'm confident they knew would happen before we boarded. Pilot gave no updates other than we had to hold, attendants did speak to the crew, but when asked, said the pilot would be updating us. We on the ground in the plane waiting for over 2 hours. They did communicate that bathrooms would be open, but no other news until we left. Would have been better to be up front about status.

Everything you need to know for your flight from Idaho Falls to District of Columbia

Information on your arrival and departure airports