IDA - WAS

$169 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 3/2. 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.

 
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
$383
Typical prices: $546-$584
Alaska Airlines
Wed 3/25Tue 3/31
IDA - IAD • 1 stop
Cheapest one-way
$169
Multiple Airlines
Mon 3/2
IDA - DCA • 2 stops
Top airlines
Alaska Airlines
Cheapest • from $383 (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.

Wed, Mar 25 - Tue, Mar 31
Alaska Airlines Logo
5:59 pm - 5:40 am
IDA
-
IAD
9h 41m
1 stop
Alaska Airlines Logo
7:11 pm - 10:52 pm
IAD
-
IDA
29h 41m
1 stop
$383Alaska Airlines
Thu, May 28 - Mon, Jun 1
Alaska Airlines Logo
6:00 am - 6:27 pm
IDA
-
BWI
10h 27m
1 stop
Alaska Airlines Logo
5:30 pm - 1:06 pm
BWI
-
IDA
21h 36m
1 stop
$399Alaska Airlines
Wed, Mar 11 - Tue, Mar 17
Delta Logo
6:55 pm - 5:51 am
IDA
-
BWI
8h 56m
1 stop
Delta Logo
7:01 am - 12:27 pm
BWI
-
IDA
7h 26m
1 stop
$419Delta
Wed, Mar 25 - Tue, Mar 31
Delta Logo
6:55 pm - 5:51 am
IDA
-
BWI
8h 56m
1 stop
Delta Logo
5:40 am - 12:27 pm
BWI
-
IDA
8h 47m
2 stops
$429Delta
Thu, May 28 - Mon, Jun 1
Alaska Airlines Logo
6:00 am - 4:33 pm
IDA
-
IAD
8h 33m
1 stop
Alaska Airlines Logo
5:33 pm - 3:31 pm
IAD
-
IDA
23h 58m
1 stop
$440Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Delta Logo
1:10 pm - 11:44 pm
IDA
-
BWI
8h 34m
1 stop
Delta Logo
7:05 am - 12:22 pm
BWI
-
IDA
7h 17m
1 stop
$440Delta
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
2:40 pm - 11:25 pm
IDA
-
BWI
6h 45m
1 stop
United Airlines Logo
8:00 am - 3:40 pm
BWI
-
IDA
9h 40m
1 stop
$465United Airlines
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
6:03 am - 3:59 pm
IDA
-
DCA
7h 56m
1 stop
American Airlines Logo
4:59 pm - 11:24 pm
DCA
-
IDA
8h 25m
1 stop
$470American Airlines
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
6:03 am - 3:59 pm
IDA
-
DCA
7h 56m
1 stop
American Airlines Logo
1:44 pm - 11:24 pm
DCA
-
IDA
11h 40m
2 stops
$475American Airlines
Mon, Jul 20 - Sat, Aug 1
United Airlines Logo
2:31 pm - 12:37 am
IDA
-
IAD
8h 06m
1 stop
United Airlines Logo
6:30 am - 1:24 pm
IAD
-
IDA
8h 54m
1 stop
$483United 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 ($383) and Delta ($419).

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 is just one airline that flies from Idaho Falls to Washington, D.C. direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is $394.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$169
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 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 $169 for a one-way ticket and $383 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 9289 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

6.0 GoodJames, Feb 2026
HND - IAD
Read more United Airlines reviews

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

Fine not above and beyond as I had a connection that was delayed due to maintenance

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

The seats were comfortable and we had leg room. Great entertainment.

The flight crew where really good. Better then the crew from BNE to SFO

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

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)