IDA - IAD

$208 Find Cheap Flights from Idaho Falls to Washington Dulles 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 2/2. 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. Dulles Intl 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$359
United Airlines
Fri 2/6Tue 2/10
IDA - IAD • 1 stop
Cheapest one-way
$285
Typical prices: $284-$497
Multiple Airlines
Mon 2/2
IDA - IAD • 3 stops
Top airlines
United Airlines
Cheapest • from $359 (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-IAD)

 
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.

Fri, Feb 6 - Tue, Feb 10
United Airlines Logo
2:40 pm - 11:22 pm
IDA
-
IAD
6h 42m
1 stop
United Airlines Logo
8:15 am - 3:31 pm
IAD
-
IDA
9h 16m
1 stop
$359United Airlines
Sat, Feb 7 - Wed, Feb 11
United Airlines Logo
2:40 pm - 11:22 pm
IDA
-
IAD
6h 42m
1 stop
United Airlines Logo
10:02 am - 3:31 pm
IAD
-
IDA
7h 29m
1 stop
$439United Airlines
Fri, Apr 24 - Mon, Apr 27
Alaska Airlines Logo
6:00 am - 6:20 pm
IDA
-
IAD
10h 20m
1 stop
Alaska Airlines Logo
7:20 pm - 10:40 pm
IAD
-
IDA
29h 20m
1 stop
$453Alaska Airlines
Fri, Feb 13 - Mon, Feb 16
American Airlines Logo
6:03 am - 8:30 pm
IDA
-
IAD
12h 27m
2 stops
American Airlines Logo
6:00 am - 1:48 pm
IAD
-
IDA
9h 48m
1 stop
$461American Airlines
Sun, Mar 29 - Mon, Apr 6
Alaska Airlines Logo
5:59 pm - 5:40 am
IDA
-
IAD
9h 41m
1 stop
Alaska Airlines Logo
7:11 pm - 4:19 pm
IAD
-
IDA
23h 08m
1 stop
$485Alaska Airlines
Sun, Feb 22 - Wed, Feb 25
Alaska Airlines Logo
8:00 am - 5:27 pm
IDA
-
IAD
31h 27m
2 stops
Alaska Airlines Logo
7:05 am - 4:43 pm
IAD
-
IDA
11h 38m
1 stop
$502Alaska Airlines
Sun, Feb 22 - Wed, Feb 25
Alaska Airlines Logo
8:00 am - 5:40 am
IDA
-
IAD
19h 40m
1 stop
Alaska Airlines Logo
7:05 am - 4:43 pm
IAD
-
IDA
11h 38m
1 stop
$511Alaska Airlines
Sun, Mar 29 - Mon, Apr 6
United Airlines Logo
2:30 pm - 11:34 pm
IDA
-
IAD
7h 04m
1 stop
United Airlines Logo
10:35 pm - 9:53 am
IAD
-
IDA
13h 18m
1 stop
$512United Airlines
Thu, Mar 26 - Mon, Mar 30
United Airlines Logo
2:35 pm - 11:20 pm
IDA
-
IAD
6h 45m
1 stop
United Airlines Logo
8:12 pm - 9:53 am
IAD
-
IDA
15h 41m
1 stop
$513United Airlines
Sun, Feb 22 - Fri, Feb 27
Alaska Airlines Logo
8:00 am - 5:40 am
IDA
-
IAD
19h 40m
1 stop
Alaska Airlines Logo
6:27 pm - 11:36 pm
IAD
-
IDA
31h 09m
1 stop
$528Alaska 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 Dulles Airport?

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 Dulles Airport were found on United Airlines ($359) and Alaska Airlines ($453).

Find deals

Good to know

Low seasonOctober
Cheapest flight$285
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly and prices are also 34% lower on average.
Flight from Idaho Falls to Washington Dulles 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 Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Idaho Falls to Washington, D.C. Dulles Intl Airport was $208 for a one-way ticket and $359 for a round-trip.

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

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

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

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

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

    Star Alliance is the only airline alliance operating flights between Idaho Falls and Washington Dulles Airport.

  • How does KAYAK find such low prices on flights from Idaho Falls to Washington Dulles 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 Washington Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles 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 Washington Dulles 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 Washington Dulles Airport with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and IAD 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 Dulles 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 Washington Dulles 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 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 9194 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

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

4.0 OkayAnonymous, Jan 2026
ALB - IAD
Read more United Airlines reviews

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.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

l really enjoy very much the flight was very pleasant

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.

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)
Dulles Intl (IAD)