IDA - IAD

$334 Find Cheap Flights from Idaho Falls to Washington Dulles Airport

This is the cheapest round-trip 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 2/25. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$334
Typical prices: $523-$695
United Airlines
Wed 2/25Tue 3/3
IDA - IAD • 1 stop
Cheapest one-way
Multiple Airlines
Tue 1/27
IDA - IAD • multi-stop
Top airlines
United Airlines
Cheapest • from $334 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Start a new search
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.

Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
10:45 am - 7:24 pm
IDA
-
IAD
6h 39m
1 stop
United Airlines Logo
3:58 pm - 8:58 pm
IAD
-
IDA
7h 00m
1 stop
$334United Airlines
Thu, Feb 26 - Tue, Mar 3
United Airlines Logo
2:40 pm - 11:19 pm
IDA
-
IAD
6h 39m
1 stop
United Airlines Logo
2:12 pm - 8:58 pm
IAD
-
IDA
8h 46m
1 stop
$359United Airlines
Wed, Feb 25 - Tue, Mar 3
Delta Logo
6:35 pm - 9:13 am
IDA
-
IAD
12h 38m
2 stops
Delta Logo
7:05 am - 5:49 pm
IAD
-
IDA
12h 44m
1 stop
$372Delta
Wed, Feb 25 - Mon, Mar 2
Delta Logo
6:35 pm - 9:13 am
IDA
-
IAD
12h 38m
2 stops
Delta Logo
7:52 pm - 12:22 pm
IAD
-
IDA
18h 30m
2 stops
$378Delta
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
5:20 pm - 5:40 am
IDA
-
IAD
10h 20m
1 stop
Alaska Airlines Logo
7:05 am - 4:43 pm
IAD
-
IDA
11h 38m
1 stop
$415Alaska Airlines
Wed, Feb 25 - Tue, Mar 3
Delta Logo
6:35 pm - 9:13 am
IDA
-
IAD
12h 38m
2 stops
Delta Logo
12:38 pm - 10:21 pm
IAD
-
IDA
11h 43m
2 stops
$417Delta
Wed, Feb 25 - Mon, Mar 2
Delta Logo
6:35 pm - 9:13 am
IDA
-
IAD
12h 38m
2 stops
Delta Logo
7:05 am - 5:49 pm
IAD
-
IDA
12h 44m
1 stop
$422Delta
Wed, Feb 25 - Mon, Mar 2
Alaska Airlines Logo
5:20 pm - 5:20 pm
IDA
-
IAD
22h 00m
1 stop
Alaska Airlines Logo
6:27 pm - 4:43 pm
IAD
-
IDA
24h 16m
1 stop
$423Alaska Airlines
Wed, Feb 25 - Sun, Mar 1
Alaska Airlines Logo
5:20 pm - 5:20 pm
IDA
-
IAD
22h 00m
1 stop
Alaska Airlines Logo
7:05 am - 11:36 pm
IAD
-
IDA
18h 31m
1 stop
$433Alaska Airlines
Wed, Jul 1 - Wed, Jul 8
United Airlines Logo
4:15 pm - 12:32 am
IDA
-
IAD
6h 17m
1 stop
United Airlines Logo
6:35 am - 1:31 pm
IAD
-
IDA
8h 56m
1 stop
$441United 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.

How much is a round-trip flight from Idaho Falls to Washington, D.C. Dulles Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Idaho Falls to Washington, D.C. Dulles Intl Airport departing in February.
Find deals

Good to know

Low seasonOctober
Cheapest flight$334
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 $334 for a round-trip ticket.

  • 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 9205 reviews
6.6Food
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
Airline reviews

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

6.0 GoodMichael, Jan 2026
GVA - IAD
Read more United Airlines reviews

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.

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

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)