IDA - DCA

$224 Find Cheap Flights from Idaho Falls to Reagan Washington National Airport

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 Washington, D.C. departing on 9/16. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Reagan-National Airport

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

Cheap Flights from Idaho Falls to Reagan-National (IDA-DCA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Reagan-National 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 Washington, D.C.

Thu, Dec 25 - Mon, Jan 5
Delta Logo
5:55 am - 3:50 pmIDA-DCA
7h 55m1 stop
Delta Logo
5:15 pm - 10:21 pmDCA-IDA
7h 06m1 stop
$415Delta
Find Deal
Thu, Dec 25 - Tue, Dec 30
Delta Logo
5:55 am - 4:39 pmIDA-DCA
8h 44m2 stops
Delta Logo
5:00 pm - 10:57 pmDCA-IDA
7h 57m1 stop
$420Delta
Find Deal
Tue, Oct 28 - Thu, Oct 30
American Airlines Logo
6:44 am - 7:58 pmIDA-DCA
11h 14m2 stops
American Airlines Logo
5:00 am - 12:41 pmDCA-IDA
9h 41m2 stops
$425American Airlines
Find Deal
Wed, Dec 24 - Thu, Jan 1
Alaska Airlines Logo
6:00 am - 4:07 pmIDA-DCA
8h 07m1 stop
Alaska Airlines Logo
5:00 pm - 12:06 amDCA-IDA
9h 06m1 stop
$477Alaska Airlines
Find Deal
Wed, Sep 17 - Sun, Sep 21
American Airlines Logo
1:35 pm - 1:00 amIDA-DCA
9h 25m1 stop
American Airlines Logo
1:33 pm - 9:23 pmDCA-IDA
9h 50m1 stop
$481American Airlines
Find Deal
Sat, Dec 13 - Mon, Dec 15
United Airlines Logo
7:00 am - 2:51 pmIDA-DCA
5h 51m1 stop
United Airlines Logo
4:05 pm - 9:12 pmDCA-IDA
7h 07m1 stop
$505United Airlines
Find Deal
Thu, Dec 11 - Mon, Dec 15
United Airlines Logo
7:00 am - 2:51 pmIDA-DCA
5h 51m1 stop
United Airlines Logo
4:05 pm - 9:12 pmDCA-IDA
7h 07m1 stop
$533United Airlines
Find Deal
Thu, Dec 11 - Sun, Dec 14
Alaska Airlines Logo
6:05 am - 4:08 pmIDA-DCA
8h 03m1 stop
Alaska Airlines Logo
5:00 pm - 12:02 amDCA-IDA
9h 02m1 stop
$541Alaska Airlines
Find Deal
Sat, Oct 11 - Wed, Oct 15
 Logo
6:00 am - 4:48 pmIDA-DCA
8h 48m1 stop
 Logo
8:00 am - 3:38 pmDCA-IDA
9h 38m1 stop
Tue, Sep 23 - Fri, Sep 26
 Logo
6:13 am - 4:49 pmIDA-DCA
8h 36m1 stop
 Logo
8:00 am - 3:20 pmDCA-IDA
9h 20m1 stop

Everything you should know

Top airlines
Delta
Cheapest • from $415 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
December
Cheapest • 43% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$415
Overall average: $394
Delta
Thu 12/25Mon 1/5
IDA - DCA • 1 stop
Cheapest one-way
$224
Alaska Airlines
Tue 9/16
IDA - DCA • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Booking Insights

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

Get data-powered insights and trends into flights from Idaho Falls to Washington, D.C. 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 Idaho Falls to Reagan Washington National Airport?

The average price of all round-trip flights from Idaho Falls to Washington, D.C. Reagan-National Airport clicked on KAYAK for each day over the last 12 months.

When flying from Idaho Falls to Reagan Washington National Airport, you should consider leaving on a Monday and avoid Fridays if you are looking for the best rates. For your return to Idaho Falls, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Idaho Falls to Washington, D.C. Reagan-National Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to Washington, D.C. Reagan-National Airport, 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 Washington, D.C. Reagan-National Airport is December, where tickets cost $394 (return) on average. On the other hand, the most expensive months are August and June, where the average cost of round-trip tickets is $1,429 and $929 respectively.

Good to know

Low seasonAugust
Cheapest flight$224
Best time to beat the crowds but there is an average 105% increase in price.
Most popular time to fly and prices are also 29% lower on average.
Flight from Idaho Falls to Reagan Washington National Airport

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

Are your dates flexible? Find out the best times to travel from Idaho Falls to Washington, D.C. 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.

FAQs for booking Idaho Falls to Reagan Washington National Airport flights

  • What is the cheapest flight from Idaho Falls to Washington, D.C. Reagan-National Airport?

    In the last 3 days, the lowest price for a flight from Idaho Falls to Washington, D.C. Reagan-National Airport was $224 for a one-way ticket and $415 for a round-trip.

  • Do I need a passport to fly between Idaho Falls and Reagan Washington National Airport?

    A passport is not required to fly from Idaho Falls to Reagan Washington National Airport.

  • Which aircraft models fly most regularly from Idaho Falls to Reagan Washington National Airport?

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

  • Which airline alliances offer flights from Idaho Falls to Reagan Washington National Airport?

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

  • Which is the best airline for flights from Idaho Falls to Washington, D.C., United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Washington, D.C. are United Airlines and American Airlines. With an average price for the route of $698 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $560 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Idaho Falls to Reagan Washington National Airport?

    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 Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Idaho Falls 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 Reagan Washington National Airport?

    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 Reagan Washington National Airport with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and DCA 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 Idaho Falls to Reagan Washington National Airport?

    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 Reagan Washington National Airport from Idaho Falls 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 Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Washington, D.C.. 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 Washington, D.C.? 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 8937 reviews
6.6Food
7.1Entertainment
8.1Crew
7.7Boarding
7.3Comfort
Airline reviews

IAD with the archaic people movers is just a place to be avoided.

10.0 ExcellentThomas, Aug 2025CMH - IAD
Read more United Airlines reviews

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

United airlines, mediocre at best. No issues , nothing great . Worked for me

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Having to reschedule flights a day later, they loaded by luggage on the wrong plane from Little rock now I have to HOPE they deliver it to where im staying like they said would. International flight crew was very disgruntled and not very friendly.

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

Our bags took a long time to get unloaded once we landed.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

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

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