IDA - WAS

$150 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 12/15. 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 Washington, D.C.

 
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
$354
Typical prices: $595-$876
Alaska Airlines
Thu 1/8Mon 1/12
IDA - IAD • 1 stop
Cheapest one-way
$150
Multiple Airlines
Mon 12/15
IDA - BWI • 2 stops
Top airlines
Alaska Airlines
Cheapest • from $354 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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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-WAS)

 
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 - 4:26 pmIDA-IAD
19h 28m1 stop
Alaska Airlines Logo
6:04 pm - 10:59 pmIAD-IDA
30h 55m1 stop
$354Alaska Airlines
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Wed, Jan 7 - 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
$354Alaska Airlines
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Thu, Jan 15 - Sun, Jan 18
American Airlines Logo
2:07 pm - 11:18 pmIDA-BWI
7h 11m1 stop
American Airlines Logo
6:00 am - 10:36 pmBWI-IDA
18h 36m2 stops
$394American Airlines
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Sat, Feb 7 - Tue, Feb 10
United Airlines Logo
10:51 am - 7:21 pmIDA-IAD
6h 30m1 stop
United Airlines Logo
4:11 pm - 9:14 pmIAD-IDA
7h 03m1 stop
$415United Airlines
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Sun, Jan 18 - Sun, Feb 1
United Airlines Logo
10:51 am - 9:07 pmIDA-IAD
8h 16m1 stop
United Airlines Logo
8:15 am - 1:30 pmIAD-IDA
7h 15m1 stop
$418United Airlines
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Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
7:20 am - 11:12 pmIDA-IAD
13h 52m2 stops
American Airlines Logo
6:00 am - 1:37 pmIAD-IDA
9h 37m1 stop
$420American Airlines
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Wed, Dec 3 - Sun, Jan 4
Multiple Airlines Logo
12:19 pm - 9:17 amIDA-BWI
18h 58m2 stops
Multiple Airlines Logo
8:38 pm - 4:12 pmBWI-IDA
21h 34m2 stops
$424Multiple Airlines
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Wed, Dec 3 - Sun, Jan 4
Multiple Airlines Logo
12:19 pm - 9:22 amIDA-BWI
19h 03m3 stops
Multiple Airlines Logo
8:38 pm - 4:12 pmBWI-IDA
21h 34m2 stops
$432Multiple Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
Delta Logo
1:15 pm - 11:42 pmIDA-BWI
8h 27m1 stop
Delta Logo
7:00 am - 12:34 pmBWI-IDA
7h 34m1 stop
$450Delta
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Tue, Mar 10 - Wed, Mar 11
Delta Logo
6:45 pm - 6:07 amIDA-BWI
9h 22m1 stop
Delta Logo
12:15 pm - 10:21 pmBWI-IDA
12h 06m2 stops
$455Delta
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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. clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Washington, D.C. on a Wednesday and more expensive on a Saturday. On your return trip to Idaho Falls, you should consider flying back on a Saturday, and avoid Mondays for better deals.

Find deals

Good to know

Cheapest flight$150
Flight from Idaho Falls to Baltimore

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 flights from Idaho Falls to Washington, D.C.

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

    In the last 3 days, the lowest price for a flight from Idaho Falls to Washington, D.C. was $150 for a one-way ticket and $354 for a round-trip.

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

    No, a passport isn't needed to fly from Idaho Falls to Washington, D.C.. However, local authorities might ask for an official ID.

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

    Idaho Falls is served by only 1 airport and there are 2 airports in Washington, D.C.. You will leave Idaho Falls from Idaho Falls Fanning Field and you will be arriving in Washington, D.C. at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • 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.?

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

  • 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.

  • 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 airline 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 9015 reviews
7.7Boarding
7.3Comfort
6.6Food
7.1Entertainment
8.1Crew
Airline reviews

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

8.0 ExcellentSemra, Nov 2025GVA - IAD
Read more United Airlines reviews

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.

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

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

Information on your arrival and departure airports

Idaho Falls (IDA)