IDA - IAD

$207 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 12/6. 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
$354
Typical prices: $595-$876
Alaska Airlines
Thu 1/8Mon 1/12
IDA - IAD • 1 stop
Cheapest one-way
$207
Alaska Airlines
Sat 12/6
IDA - IAD • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $354 (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.

Thu, Jan 8 - Mon, Jan 12
Alaska Airlines Logo
6:58 pm - 4:26 pmIDA-IAD
19h 28m1 stop
Alaska Airlines Logo
6:04 pm - 10:59 pmIAD-IDA
30h 55m1 stop
$354Alaska Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
Alaska Airlines Logo
6:58 pm - 4:26 pmIDA-IAD
19h 28m1 stop
Alaska Airlines Logo
6:04 pm - 10:59 pmIAD-IDA
30h 55m1 stop
$374Alaska Airlines
Find Deal
Sat, Feb 7 - Tue, Feb 10
Alaska Airlines Logo
9:00 am - 5:04 pmIDA-IAD
30h 04m2 stops
Alaska Airlines Logo
6:04 pm - 6:18 pmIAD-IDA
26h 14m1 stop
$389Alaska Airlines
Find Deal
Sat, Feb 7 - Tue, Feb 10
Alaska Airlines Logo
9:00 am - 5:04 pmIDA-IAD
30h 04m2 stops
Alaska Airlines Logo
5:26 pm - 6:18 pmIAD-IDA
26h 52m2 stops
$413Alaska Airlines
Find Deal
Sat, Feb 7 - Tue, Feb 10
United Airlines Logo
10:51 am - 7:21 pmIDA-IAD
6h 30m1 stop
United Airlines Logo
4:11 pm - 9:14 pmIAD-IDA
7h 03m1 stop
$415United Airlines
Find Deal
Sun, Jan 18 - Sun, Feb 1
United Airlines Logo
10:51 am - 9:07 pmIDA-IAD
8h 16m1 stop
United Airlines Logo
8:15 am - 1:30 pmIAD-IDA
7h 15m1 stop
$418United Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
7:20 am - 11:12 pmIDA-IAD
13h 52m2 stops
American Airlines Logo
6:00 am - 1:37 pmIAD-IDA
9h 37m1 stop
$420American Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
7:20 am - 11:12 pmIDA-IAD
13h 52m2 stops
American Airlines Logo
11:34 am - 10:36 pmIAD-IDA
13h 02m2 stops
$425American Airlines
Find Deal
Wed, Jan 7 - Mon, Jan 12
Alaska Airlines Logo
6:58 pm - 4:26 pmIDA-IAD
19h 28m1 stop
Alaska Airlines Logo
6:04 pm - 10:59 pmIAD-IDA
30h 55m1 stop
$438Alaska Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 15
Alaska Airlines Logo
6:58 pm - 4:26 pmIDA-IAD
19h 28m1 stop
Alaska Airlines Logo
5:26 pm - 10:59 pmIAD-IDA
31h 33m2 stops
$439Alaska Airlines
Find Deal
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 January.

What’s the cheapest day of the week to fly from Idaho Falls to Washington, D.C.?

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, D.C., Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Washington, D.C. 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$207
Best time to beat the crowds with an average 41% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Idaho Falls to Washington, D.C.

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, D.C. 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 $207 for a one-way ticket and $354 for a round-trip.

  • Do I need a passport to fly between Idaho Falls and Washington, D.C.?

    A passport is not required to fly from Idaho Falls to Washington, D.C..

  • 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.?

    Star Alliance is the only airline alliance operating flights between Idaho Falls and Washington, D.C..

  • 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. 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, 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 9015 reviews
7.3Comfort
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

Great crew, excellent landing, good food. Over all great experience. Thank you!

8.0 ExcellentSemra, Nov 2025GVA - IAD
Read more United Airlines reviews

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

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

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)