IDA - WAS

$187 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 5/16. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

 
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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Cheap Flight Deals from Idaho Falls to Washington, D.C. (IDA-WAS)

 
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.

Recent round-trip flight deals from Idaho Falls to Washington, D.C.

KAYAK's recommended round-trip deals from the most popular airlines that fly from Idaho Falls to Washington, D.C..
Discover the best prices for you by selecting your travel dates on KAYAK.
Hawaiian Airlines Logo
6:00 am - 5:15 pmIDA-IAD
9h 15m1 stop
Hawaiian Airlines Logo
7:00 am - 3:40 pmIAD-IDA
10h 40m1 stop
$344Hawaiian Airlines
Find Deal
Sat, May 24 - Sat, May 31
Delta Logo
12:55 pm - 11:53 pmIDA-IAD
8h 58m1 stop
Delta Logo
1:00 pm - 10:55 pmIAD-IDA
11h 55m2 stops
$366Delta
Find Deal
Sat, May 24 - Sat, May 31
Delta Logo
6:00 am - 4:00 pmIDA-DCA
8h 00m1 stop
Delta Logo
12:10 pm - 10:55 pmDCA-IDA
12h 45m2 stops
$366Delta
Find Deal
Sat, May 24 - Sat, May 31
Delta Logo
12:55 pm - 11:35 pmIDA-IAD
8h 40m2 stops
Delta Logo
1:20 pm - 10:55 pmIAD-IDA
11h 35m2 stops
$371Delta
Find Deal
Sat, May 24 - Sat, May 31
United Airlines Logo
4:13 pm - 12:45 amIDA-IAD
6h 32m1 stop
United Airlines Logo
6:30 am - 1:32 pmIAD-IDA
9h 02m1 stop
$395United Airlines
Find Deal
Fri, Aug 8 - Thu, Aug 14
Alaska Airlines Logo
4:20 pm - 7:36 amIDA-IAD
13h 16m1 stop
Alaska Airlines Logo
6:30 am - 3:40 pmIAD-IDA
11h 10m1 stop
$452Alaska Airlines
Find Deal
Sat, May 31 - Thu, Jun 5
American Airlines Logo
7:00 am - 4:14 pmIDA-DCA
7h 14m1 stop
American Airlines Logo
2:59 pm - 9:17 pmDCA-IDA
8h 18m1 stop
$453American Airlines
Find Deal
Sat, May 24 - Sat, May 31
Alaska Airlines Logo
6:00 am - 11:59 pmIDA-IAD
15h 59m1 stop
Alaska Airlines Logo
7:25 pm - 10:34 pmIAD-IDA
29h 09m2 stops
$457Alaska Airlines
Find Deal
Tue, May 27 - Mon, Jun 2
United Airlines Logo
2:25 pm - 10:50 pmIDA-IAD
6h 25m1 stop
United Airlines Logo
5:36 pm - 10:51 pmIAD-IDA
7h 15m1 stop
$468United Airlines
Find Deal
Tue, May 27 - Mon, Jun 2
American Airlines Logo
6:51 am - 7:36 pmIDA-IAD
10h 45m2 stops
American Airlines Logo
6:27 am - 1:17 pmIAD-IDA
8h 50m1 stop
$636American Airlines
Find Deal
Tue, Jul 22 - Thu, Jul 24
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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.

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. clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Washington, D.C. on a Wednesday and more expensive on a Saturday. On your return trip to Idaho Falls, you should consider flying back on a Saturday, and avoid Mondays for better deals.

Good to know

Low seasonOctober
High seasonMay
Cheapest flight$187
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Idaho Falls to Baltimore

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 flights from Idaho Falls to Washington, D.C.

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

    In the last 3 days, the lowest price for a flight from Idaho Falls to Washington, D.C. was $187 for a one-way ticket and $344 for a round-trip.

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

    No, a passport isn't needed to fly from Idaho Falls to Washington, D.C.. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Idaho Falls to Washington, D.C.?

    Idaho Falls is served by only 1 airport and there are 2 airports in Washington, D.C.. You will leave Idaho Falls from Idaho Falls Fanning Field and you will be arriving in Washington, D.C. at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • 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.?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Idaho Falls and Washington, D.C., with oneworld being the most commonly used for this route.

  • 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.

  • 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.

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 8696 reviews
7.3Comfort
6.6Food
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

Mostly the experience was good except for the flight changes made by UA which meant longer layover in DC

10.0 ExcellentAnonymous, Mar 2025GUA - IAD
Read more United Airlines reviews

Mostly the experience was good except for the flight changes made by UA which meant longer layover in DC

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Change cabin crew assisting business class. Not taking care, ignoring requests and calls. Never had such an experience in business class.

United left one of our bags back in SFO but that’s not my real complaint. The complaint is how it all went down. So we checked in the day before online and were told we could use the quick drop for luggage. So the next day I used baggage quick drop curbside at SFO. The agent mistakenly didn't tag my bag as he put my bag on the conveyor belt untagged. We immediately alerted him he had not tagged the bag. I walked with him to the baggage service office to find my bag and tag it. We waited outside the office for 10 mins. He came out and said everything was ok and the bag was going to be tagged and on my flight. We received a text that one of our bags was on the flight but the other was not. I alerted my first class flight attendant immediately upon boarding the flight. She was helpful and said she’d get it sorted out right away. She called over the gate agent. The gate agent used my bag number and looked over information on her device. She said my bag was on the flight. The flight attendant was standing with her, looking at the device, and also said “yep it’s on the flight”. During the flight the flight attendant made reference to how reassuring it must feel knowing the bag was on the flight. Upon arriving to IAD we received a text that my bag was not on my flight. The text said my bag would arrive to my final destination LIS 24 hrs late. I understand that mistakes happen. I was totally ok with my bag mistakenly not getting tagged at the quick drop. I was fine with walking down to baggage services to tag my bag. But, what I am not ok with is that the United staff said they fixed the mistake two different times, assuring me twice that my bag would be/was on the plane…and it wasn’t. I expected better attention by the employees, for them to do what they said they were going to do. We also spent extra money to upgrade our seats to first class, including the entire return leg from Lisbon to San Francisco because we wanted a smoother and more relaxing travel experience. Our money was not well spent. We will not be using United for travel going forward.

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Horrifying! And I am almost 2 million miles with United. Late by 3 1/2 hours. Worst: after two hours on the plane waiting, they decided that one of the tires had been damaged and then decided to change it. Another hour and a half to change the tire!!!!! NO EXCUSE FOR THIS. The crew didn't even offer a glass of water until we had been on the plane for FIVE hours. This is the worst airline in the world. I'm simply stuck because they fly on the only routes I need.

Gate got changed about 4 times. Very confusing and very crowded. If you don’t have wifi to help get updates, you can be in deep trouble.

Attendants zipped through cabin so fast hardly anyone got the water they told us we could have in the short flight. Nothing else was offered.

Sucks ! All three flights I was on this trip were delayed.

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

Everything you need to know for your flight from Idaho Falls to Washington, D.C.

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