$125 Find Cheap Flights from Washington Dulles Airport to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Idaho departing on 3/10. 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 Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Idaho, 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 Washington, D.C. to Idaho, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Dulles Intl to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$226
Idaho Falls
Idaho Falls1 stop$334
Hailey
Hailey1 stop$289
Pocatello
Pocatello1 stop$574
Spokane
Spokane1 stop$226
Boise
Boise1 stop$226
Idaho Falls
Idaho Falls1 stop$334
Hailey
Hailey1 stop$289
Pocatello
Pocatello1 stop$574
Spokane
Spokane1 stop$226

Book Cheap Dulles Intl to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Idaho 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 Dulles Intl to Idaho

Sat, Jan 24 - Wed, Jan 28
Alaska Airlines Logo
6:04 pm - 12:51 pm
IAD
-
BOI
20h 47m1 stop
Alaska Airlines Logo
3:43 pm - 4:26 pm
BOI
-
IAD
22h 43m1 stop
$226Alaska Airlines
Wed, Jan 21 - Sat, Jan 24
Alaska Airlines Logo
6:04 pm - 11:04 pm
IAD
-
GEG
8h 00m1 stop
Alaska Airlines Logo
5:45 am - 4:26 pm
GEG
-
IAD
7h 41m1 stop
$226Alaska Airlines
Sat, Jan 17 - Wed, Jan 21
Delta Logo
7:30 am - 4:17 pm
IAD
-
BOI
10h 47m1 stop
Delta Logo
10:39 am - 11:10 pm
BOI
-
IAD
10h 31m1 stop
$227Delta
Wed, Jan 14 - Wed, Feb 11
Delta Logo
7:30 am - 12:37 pm
IAD
-
GEG
8h 07m1 stop
Delta Logo
1:20 pm - 11:10 pm
GEG
-
IAD
6h 50m1 stop
$227Delta
Sat, Jan 17 - Wed, Jan 21
Delta Logo
7:30 am - 4:17 pm
IAD
-
BOI
10h 47m1 stop
Delta Logo
9:15 am - 11:48 pm
BOI
-
IAD
12h 33m2 stops
$232Delta
Wed, Jan 14 - Wed, Feb 11
Delta Logo
7:30 am - 12:37 pm
IAD
-
GEG
8h 07m1 stop
Delta Logo
11:25 am - 11:06 pm
GEG
-
IAD
8h 41m2 stops
$232Delta
Wed, Mar 11 - Tue, Mar 17
United Airlines Logo
2:12 pm - 8:54 pm
IAD
-
JAC
8h 42m1 stop
United Airlines Logo
2:33 pm - 11:20 pm
JAC
-
IAD
6h 47m1 stop
$289United Airlines
Sat, Apr 4 - Wed, Apr 8
United Airlines Logo
9:00 am - 11:40 am
IAD
-
JAC
4h 40mnonstop
United Airlines Logo
7:00 am - 4:46 pm
JAC
-
IAD
7h 46m1 stop
$322United Airlines
Wed, Feb 18 - Fri, Feb 27
American Airlines Logo
11:22 am - 11:07 pm
IAD
-
IDA
13h 45m2 stops
American Airlines Logo
2:02 pm - 10:48 pm
IDA
-
IAD
6h 46m1 stop
$407American Airlines
Thu, Feb 5 - Thu, Feb 12
American Airlines Logo
6:00 am - 1:37 pm
IAD
-
IDA
9h 37m1 stop
American Airlines Logo
2:02 pm - 10:48 pm
IDA
-
IAD
6h 46m1 stop
$414American Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Idaho flights

Get data-powered insights and trends into flights from Dulles Intl to Idaho to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Idaho is November, when tickets cost $308 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $586 and $552 respectively.

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

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

If your flying dates are flexible, you should consider flying to Idaho on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Washington Dulles Airport to Idaho. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

Good to know

Low seasonNovember
Cheapest flight$125
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Washington Dulles Airport to Jackson

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Idaho?

    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 Washington Dulles Airport to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to Idaho 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 Washington Dulles Airport to Idaho?

    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 from Washington Dulles Airport to Idaho with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Idaho?

    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 from Washington Dulles Airport to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Idaho?

    The cheapest time of day to fly to Idaho is generally in the afternoon, when round-trip flights cost $431 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to Idaho is generally at night, which is peak travel time and where the average cost of a ticket is $671.

Reviews of the top 4 airlines serving from Dulles Intl to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Idaho. 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 Dulles Intl to Idaho? 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.
8.0
Alaska AirlinesOverall score based on 11518 reviews
8.1Boarding
7.8Comfort
8.5Crew
7.1Food
7.0Entertainment
Airline reviews

The seats were not very comfortable and there were no TV screens. Boarding was pretty fast because there were so few people on such a small plane and I appreciated that they still gave us our snack and drinks, however I really wish they would come up with a good gluten-free snack.

8.0 ExcellentSarah, Dec 2025
SMF - BOI
Read more Alaska Airlines reviews

The seats were not very comfortable and there were no TV screens. Boarding was pretty fast because there were so few people on such a small plane and I appreciated that they still gave us our snack and drinks, however I really wish they would come up with a good gluten-free snack.

Flight crew and flight were good. But it departed two hours late.

We appreciated that the flight attendant came through 3 times with drinks or water on the long flight..I was also glad that they were separating out recycling! I would have liked a 12oz sofa can instead of 7oz, but that's a minor quibble. The knee space in economy was also better than most of Alaska's competitors.

I liked the free snacks and drink. I liked the onboard entertainment. I did not like the WiFi cutting out in middle of my movie.

Flight from LAX to STS das excellent. Flight from DCA to LAX was troubled by the previous flight returning to the one DCA gate putting our flight in jeopardy. However another gate was arranged and that flight was a bit late, but was handled exceptionally.

Pretzels are always a disappointment. Cheezits, Sun Chips, trail mix, anything else would be nice.

Boarding process was poorly handled by the gate crew and the onboard crew. No effort was made to provide equal treatment to passengers with overhead bin space. Crew seemed disengaged and unfriendly.

Awesome. Great flight. Super nice people and I like the extra space

On time, WiFi worked, reasonable legroom, helpful staff. Unfortunately there was no water for handwashing in the rear lavatory.

My husband unfortunately had a very large lady next to him who did not fit in the seat and had to have the armrest up so she was partially in his seat and she also had horrible BO

Flight was on time. Wi-fi was a little spotty/slow. Boarding and exit were efficient.

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Advertised fruit trays with cheese, but only snacks handed out!

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Great. I had to modify a flight. That was easy and free. Thank You

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Everything you need to know for your flight from Dulles Intl to Idaho

Information on your arrival and departure airports