IDA - DCA

$405 Find Cheap Flights from Idaho Falls to Washington, D.C.

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 12/2. 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 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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Everything you should know

Cheapest round-trip
$405
Alaska Airlines
Thu 1/8Mon 1/12
IDA - DCA • 1 stop
Cheapest one-way
$326
Delta
Tue 12/2
IDA - DCA • 2 stops
Top airlines
Alaska Airlines
Cheapest • from $405 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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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.!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Idaho Falls to Washington, D.C. (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 Washington, D.C. 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, Jan 8 - Mon, Jan 12
Alaska Airlines Logo
6:58 pm - 9:59 pmIDA-DCA
25h 01m1 stop
Alaska Airlines Logo
5:01 pm - 6:18 pmDCA-IDA
27h 17m1 stop
$405Alaska Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
7:20 am - 9:30 pmIDA-DCA
12h 10m2 stops
American Airlines Logo
6:30 am - 1:37 pmDCA-IDA
9h 07m1 stop
$452American Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
7:20 am - 9:30 pmIDA-DCA
12h 10m2 stops
American Airlines Logo
1:44 pm - 10:36 pmDCA-IDA
10h 52m2 stops
$457American Airlines
Find Deal
Mon, Jan 26 - Thu, Jan 29
Alaska Airlines Logo
6:58 pm - 4:09 pmIDA-DCA
19h 11m1 stop
Alaska Airlines Logo
8:00 am - 6:18 pmDCA-IDA
12h 18m1 stop
$464Alaska Airlines
Find Deal
Tue, Apr 7 - Sat, Apr 11
American Airlines Logo
1:45 pm - 12:55 amIDA-DCA
9h 10m1 stop
American Airlines Logo
5:00 am - 12:27 pmDCA-IDA
9h 27m1 stop
$476American Airlines
Find Deal
Tue, Apr 7 - Sat, Apr 11
American Airlines Logo
1:45 pm - 10:59 pmIDA-DCA
7h 14m1 stop
American Airlines Logo
5:00 am - 12:27 pmDCA-IDA
9h 27m2 stops
$481American Airlines
Find Deal
Mon, Jan 26 - Thu, Jan 29
Alaska Airlines Logo
6:58 pm - 9:59 pmIDA-DCA
25h 01m1 stop
Alaska Airlines Logo
8:00 am - 6:18 pmDCA-IDA
12h 18m1 stop
$489Alaska Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
American Airlines Logo
1:58 pm - 11:00 pmIDA-DCA
7h 02m1 stop
American Airlines Logo
12:59 pm - 10:36 pmDCA-IDA
11h 37m2 stops
$521American Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
American Airlines Logo
7:00 am - 9:00 pmIDA-DCA
12h 00m2 stops
American Airlines Logo
1:45 pm - 10:36 pmDCA-IDA
10h 51m2 stops
$526American Airlines
Find Deal
Mon, Jan 26 - Thu, Jan 29
American Airlines Logo
2:07 pm - 11:00 pmIDA-DCA
6h 53m1 stop
American Airlines Logo
11:50 am - 10:36 pmDCA-IDA
12h 46m2 stops
$542American Airlines
Find Deal
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 Washington, D.C.?

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 Washington, D.C., 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.

Good to know

Low seasonApril
Cheapest flight$326
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 37% lower on average.
Flight from Idaho Falls to Washington, D.C.

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 Washington, D.C. 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 $405 for a round-trip ticket.

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

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

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

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

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

    Star Alliance, and oneworld are the airline alliances operating flights between Idaho Falls and Washington, D.C., with Star Alliance 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 $607 and an overall rating of 7.2.

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

    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 Washington, D.C..

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. 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 Washington, D.C.?

    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 Washington, D.C. 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 Washington, D.C.?

    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 Washington, D.C. 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 9044 reviews
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
7.1Entertainment
Airline reviews

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

10.0 ExcellentJeremy, Nov 2025ORD - DCA
Read more United Airlines reviews

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Great crew, excellent landing, good food. Over all great experience. Thank you!

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

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.

The flight was delayed multiple times, again no fault of American but again the extra cost, for everything makes it feel like a cheap airline! Especially when flights are outrageously expensive already

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

I had a positive experience on American. I'm blind and traveling with a guide dog and the flight attendants were so kind, friendly, and helpful towards us. They checked in on us during the flight and they made us feel comfortable and welcomed. There was an hour delay before depature, but overall the flight was a smooth ride. I appreciate that there were no issues on this long flight back home.

We were told the flight was delayed 5 times, then it was moved to the next day.

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.

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

It was nobody’s fault - but the plane came 4-hrs late and we were updated randomly in 20-30 mins increments which left us hostage to sit and wait expectantly. It was very long and got very late. Our plane didn’t land until nearly 1 am! Also the toilet wasn’t working. The hosts were nice enough but were clearly “about to pass out” as one told me. Lastly, there was no snack or even time for it. Just a bad experience overall.

The boarding crew was incredibly helpful getting me on an earlier flight

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

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

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