IDA - IAD

$204 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 8/29. 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 24% 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
$440
American Airlines
Thu 9/24Mon 9/28
IDA - IAD • 1 stop
Cheapest one-way
$204
Delta
Sat 8/29
IDA - IAD • 2 stops
Top airlines
American Airlines
Cheapest • from $440 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Idaho Falls and Washington, D.C.. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Seattle (SEA)
Cheapest • Avg $447 (round-trip)
Denver (DEN)
Shortest trip • 6h 55m (one-way)
Insights
Insights
Insights
Insights
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.

Thu, Sep 24 - Mon, Sep 28
American Airlines Logo
12:12 pm - 10:47 pm
IDA
-
IAD
8h 35m
1 stop
American Airlines Logo
6:24 am - 1:44 pm
IAD
-
IDA
9h 20m
1 stop
$440American Airlines
Thu, Aug 6 - Wed, Aug 12
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
IAD
8h 16m
1 stop
Alaska Airlines Logo
6:03 am - 3:37 pm
IAD
-
IDA
11h 34m
1 stop
$449Alaska Airlines
Thu, Aug 6 - Fri, Aug 14
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
IAD
8h 16m
1 stop
Alaska Airlines Logo
6:14 pm - 10:39 pm
IAD
-
IDA
30h 25m
1 stop
$500Alaska Airlines
Tue, Aug 4 - Wed, Aug 12
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
IAD
8h 16m
1 stop
Alaska Airlines Logo
6:03 am - 3:37 pm
IAD
-
IDA
11h 34m
1 stop
$510Alaska Airlines
Fri, Aug 21 - Mon, Aug 24
United Airlines Logo
4:04 pm - 12:32 am
IDA
-
IAD
6h 28m
1 stop
United Airlines Logo
6:30 am - 1:29 pm
IAD
-
IDA
8h 59m
1 stop
$514United Airlines
Wed, Jul 22 - Thu, Aug 20
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
IAD
8h 16m
1 stop
Alaska Airlines Logo
7:35 pm - 3:20 pm
IAD
-
IDA
21h 45m
2 stops
$520Alaska Airlines
Tue, Aug 11 - Sat, Aug 15
American Airlines Logo
7:00 am - 6:27 pm
IDA
-
IAD
9h 27m
1 stop
American Airlines Logo
6:10 am - 11:30 am
IAD
-
IDA
7h 20m
1 stop
$523American Airlines
Thu, Aug 6 - Thu, Aug 13
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
IAD
8h 16m
1 stop
Alaska Airlines Logo
6:14 pm - 3:37 pm
IAD
-
IDA
23h 23m
1 stop
$525Alaska Airlines
Tue, Aug 11 - Sat, Aug 15
Alaska Airlines Logo
4:14 pm - 6:45 pm
IDA
-
IAD
24h 31m
2 stops
Alaska Airlines Logo
9:30 am - 10:39 pm
IAD
-
IDA
15h 09m
1 stop
$538Alaska Airlines
Wed, Jul 22 - Thu, Aug 20
Alaska Airlines Logo
7:15 am - 5:11 pm
IDA
-
IAD
7h 56m
1 stop
Alaska Airlines Logo
5:47 pm - 10:56 pm
IAD
-
IDA
31h 09m
1 stop
$540Alaska 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 3 days.

In the past 3 days, the cheapest round-trip tickets from Idaho Falls to Washington Dulles Airport were found on American Airlines ($440) and Alaska Airlines ($449).

Find deals

Good to know

Cheapest flight$204
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 $240 for a one-way ticket and $440 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 9751 reviews
7.7Boarding
8.1Crew
6.6Food
7.3Comfort
7.1Entertainment
Airline reviews

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

2.0 MediocreChris, May 2026
AUS - IAD
Read more United Airlines reviews

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

There were no facilities in the middle of the aircraft and premium economy was not allowed to use the business class facilities, and had to share the only two toilets at the back with economy. The upgrade to Premium was definitely not worth it

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

The economy seat was much less comfortable for an international flight in terms of recline and moving space when food tray is expanded. Per entertainment, it would be amazing if I could connect my Bluetooth headset or ear phones to the entertainment screen. Or provide in-flight wifi to connect directly from my own device.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

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)