IDA - IAD

$233 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 1/7. 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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Everything you should know

Cheapest round-trip
$414
Typical prices: $524-$682
Alaska Airlines
Sat 5/16Wed 5/27
IDA - IAD • 1 stop
Cheapest one-way
$233
United Airlines
Wed 1/7
IDA - IAD • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $414 (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-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.

Sat, May 16 - Wed, May 27
Alaska Airlines Logo
4:20 pm - 7:36 am
IDA
-
IAD
13h 16m1 stop
Alaska Airlines Logo
7:15 pm - 3:40 pm
IAD
-
IDA
22h 25m1 stop
$414Alaska Airlines
Wed, Jan 7 - Thu, Jan 15
American Airlines Logo
7:20 am - 9:17 pm
IDA
-
IAD
11h 57m2 stops
American Airlines Logo
6:00 am - 1:37 pm
IAD
-
IDA
9h 37m1 stop
$415American Airlines
Mon, Jan 26 - Wed, Jan 28
Alaska Airlines Logo
6:58 pm - 4:26 pm
IDA
-
IAD
19h 28m1 stop
Alaska Airlines Logo
6:04 pm - 6:18 pm
IAD
-
IDA
26h 14m1 stop
$426Alaska Airlines
Tue, Apr 7 - Tue, Apr 14
Delta Logo
6:59 pm - 12:39 pm
IDA
-
IAD
15h 40m2 stops
Delta Logo
1:00 pm - 10:14 pm
IAD
-
IDA
11h 14m2 stops
$444Delta
Sat, Apr 11 - Tue, Apr 14
Delta Logo
5:40 am - 11:40 pm
IDA
-
IAD
16h 00m1 stop
Delta Logo
1:00 pm - 10:14 pm
IAD
-
IDA
11h 14m2 stops
$451Delta
Mon, Jan 26 - Wed, Jan 28
Alaska Airlines Logo
9:00 am - 5:04 pm
IDA
-
IAD
30h 04m2 stops
Alaska Airlines Logo
6:04 pm - 6:18 pm
IAD
-
IDA
26h 14m1 stop
$461Alaska Airlines
Fri, Apr 10 - Tue, Apr 14
Alaska Airlines Logo
6:15 am - 4:37 pm
IDA
-
IAD
8h 22m1 stop
Alaska Airlines Logo
7:00 am - 3:20 pm
IAD
-
IDA
10h 20m1 stop
$467Alaska Airlines
Tue, Apr 7 - Sat, Apr 18
Delta Logo
6:59 pm - 7:19 pm
IDA
-
IAD
22h 20m2 stops
Delta Logo
7:15 am - 12:27 pm
IAD
-
IDA
7h 12m1 stop
$471Delta
Sat, Apr 11 - Sat, Apr 18
Delta Logo
5:40 am - 11:40 pm
IDA
-
IAD
16h 00m1 stop
Delta Logo
7:15 am - 10:14 pm
IAD
-
IDA
16h 59m1 stop
$477Delta
Sat, Apr 11 - Wed, Apr 15
Delta Logo
5:40 am - 11:40 pm
IDA
-
IAD
16h 00m1 stop
Delta Logo
7:15 am - 12:27 pm
IAD
-
IDA
7h 12m1 stop
$478Delta
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 May.

What’s the cheapest day of the week to fly from Idaho Falls to Washington Dulles Airport?

The average price of all round-trip flights from Idaho Falls to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

For Idaho Falls to Washington Dulles Airport, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Washington Dulles Airport back to Idaho Falls, the best deals are generally found on Saturday, with Monday being the most expensive.

Find deals

Good to know

Low seasonOctober
Cheapest flight$233
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly and prices are also 24% 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 $233 for a one-way ticket and $414 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 9095 reviews
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

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

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

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.

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.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

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)