IDA - WAS

$166 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 1/12. 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
$364
Alaska Airlines
Tue 2/3Tue 2/10
IDA - IAD • 1 stop
Cheapest one-way
$166
Multiple Airlines
Mon 1/12
IDA - DCA • 3 stops
Top airlines
Alaska Airlines
Cheapest • from $364 (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.

Tue, Feb 3 - Tue, Feb 10
Alaska Airlines Logo
9:00 am - 4:26 pm
IDA
-
IAD
29h 26m1 stop
Alaska Airlines Logo
6:04 pm - 10:59 pm
IAD
-
IDA
30h 55m1 stop
$364Alaska Airlines
Tue, Feb 3 - Tue, Feb 10
Alaska Airlines Logo
9:00 am - 4:09 pm
IDA
-
DCA
29h 09m1 stop
Alaska Airlines Logo
8:00 am - 10:59 pm
DCA
-
IDA
16h 59m1 stop
$364Alaska Airlines
Tue, Feb 3 - Tue, Feb 10
Delta Logo
1:15 pm - 11:48 pm
IDA
-
IAD
8h 33m1 stop
Delta Logo
7:30 am - 5:51 pm
IAD
-
IDA
12h 21m2 stops
$384Delta
Tue, Feb 3 - Tue, Feb 10
Delta Logo
6:35 pm - 9:13 am
IDA
-
IAD
12h 38m2 stops
Delta Logo
7:30 am - 5:51 pm
IAD
-
IDA
12h 21m2 stops
$389Delta
Tue, Apr 21 - Sat, Apr 25
American Airlines Logo
1:43 pm - 11:28 pm
IDA
-
IAD
7h 45m1 stop
American Airlines Logo
7:00 am - 1:13 pm
IAD
-
IDA
8h 13m1 stop
$392American Airlines
Tue, Feb 3 - Tue, Feb 10
Delta Logo
5:25 am - 6:04 pm
IDA
-
DCA
10h 39m2 stops
Delta Logo
5:10 pm - 10:57 pm
DCA
-
IDA
7h 47m1 stop
$398Delta
Tue, Feb 3 - Tue, Feb 10
Delta Logo
5:25 am - 6:57 pm
IDA
-
DCA
11h 32m2 stops
Delta Logo
7:59 am - 5:51 pm
DCA
-
IDA
11h 52m2 stops
$403Delta
Thu, Feb 5 - Sun, Feb 8
American Airlines Logo
7:20 am - 9:30 pm
IDA
-
DCA
12h 10m2 stops
American Airlines Logo
6:30 am - 1:37 pm
DCA
-
IDA
9h 07m1 stop
$420American Airlines
Tue, Feb 3 - Tue, Feb 10
United Airlines Logo
2:40 pm - 11:16 pm
IDA
-
BWI
6h 36m1 stop
United Airlines Logo
4:10 pm - 9:14 pm
BWI
-
IDA
7h 04m1 stop
$421United Airlines
Tue, Feb 3 - Tue, Feb 10
United Airlines Logo
2:40 pm - 11:16 pm
IDA
-
BWI
6h 36m1 stop
United Airlines Logo
10:05 am - 9:14 pm
BWI
-
IDA
13h 09m2 stops
$426United Airlines
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.

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

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Idaho Falls to Washington, D.C. were found on Alaska Airlines ($364) and Delta ($384).

Which airlines fly non-stop between Idaho Falls and Washington, D.C.?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Idaho Falls to Washington, D.C..

There are 2 airlines that fly nonstop from Idaho Falls to Washington, D.C.. They are American Airlines and United Airlines. The cheapest airline for this route is American Airlines, with the best round-trip deal found costing $437. On average, the best prices for this route can be found at United Airlines.

Find deals

Good to know

Cheapest flight$166
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 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 $166 for a one-way ticket and $364 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.?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Idaho Falls and Washington, D.C., with SkyTeam 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 9118 reviews
6.6Food
7.7Boarding
7.3Comfort
8.1Crew
7.1Entertainment
Airline reviews

The flight was delayed for 1:30 hours for maintenance issues. They should give more information about connecting flights. For a Business Cabin the Crew was mediocre.

6.0 GoodClaudia, Dec 2025
AMS - IAD
Read more United Airlines reviews

The flight was delayed for 1:30 hours for maintenance issues. They should give more information about connecting flights. For a Business Cabin the Crew was mediocre.

The food is terrible. The same pasta or chicken with bad taste and presentation

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

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.

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)