$141 Find Cheap Flights from Reagan Washington National Airport to Idaho

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Idaho departing on 12/4. 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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Cheap Flights from Reagan-National to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$141
Hailey
Hailey1 stop$340
Lewiston
Lewiston1 stop$492
Twin Falls
Twin Falls1 stop$503
Pocatello
Pocatello2 stops$533
Spokane
Spokane1 stop$287
Boise
Boise1 stop$141
Hailey
Hailey1 stop$340
Lewiston
Lewiston1 stop$492
Twin Falls
Twin Falls1 stop$503
Pocatello
Pocatello2 stops$533
Spokane
Spokane1 stop$287

Book Cheap Reagan-National 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 Reagan-National 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 Reagan-National to Idaho

Thu, Dec 4 - Thu, Dec 11
Frontier Logo
6:00 pm - 11:49 amDCA-BOI
19h 49m1 stop
Frontier Logo
12:44 pm - 9:59 pmBOI-DCA
7h 15m1 stop
$141Frontier
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Mon, Nov 24 - Fri, Nov 28
Frontier Logo
8:00 am - 7:59 pmDCA-BOI
13h 59m1 stop
Frontier Logo
12:48 pm - 9:59 pmBOI-DCA
7h 11m1 stop
$275Frontier
Find Deal
Fri, Jan 30 - Mon, Feb 2
Delta Logo
4:55 pm - 10:52 pmDCA-GEG
8h 57m1 stop
Delta Logo
5:05 am - 3:20 pmGEG-DCA
7h 15m1 stop
$287Delta
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Thu, Jan 22 - Sun, Jan 25
Delta Logo
4:55 pm - 11:59 pmDCA-BOI
9h 04m1 stop
Delta Logo
5:40 am - 3:20 pmBOI-DCA
7h 40m1 stop
$287Delta
Find Deal
Wed, Dec 10 - Mon, Dec 15
Alaska Airlines Logo
8:00 am - 9:28 pmDCA-GEG
16h 28m1 stop
Alaska Airlines Logo
7:47 pm - 4:08 pmGEG-DCA
17h 21m1 stop
$304Alaska Airlines
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Sat, Dec 6 - Sat, Dec 13
Alaska Airlines Logo
8:00 am - 4:16 pmDCA-BOI
10h 16m1 stop
Alaska Airlines Logo
6:03 am - 9:59 pmBOI-DCA
13h 56m1 stop
$305Alaska Airlines
Find Deal
Fri, Jan 23 - Tue, Jan 27
American Airlines Logo
8:40 am - 5:01 pmDCA-JAC
10h 21m1 stop
American Airlines Logo
2:06 pm - 11:00 pmJAC-DCA
6h 54m1 stop
$329American Airlines
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Fri, Jan 23 - Tue, Jan 27
American Airlines Logo
5:55 am - 2:42 pmDCA-JAC
10h 47m2 stops
American Airlines Logo
2:06 pm - 11:00 pmJAC-DCA
6h 54m1 stop
$334American Airlines
Find Deal
Sat, Dec 27 - Sun, Jan 4
United Airlines Logo
6:00 pm - 10:30 pmDCA-GEG
7h 30m1 stop
United Airlines Logo
11:59 pm - 10:57 amGEG-DCA
7h 58m1 stop
$392United Airlines
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Sat, Dec 13 - Sun, Dec 21
United Airlines Logo
6:30 am - 11:06 amDCA-JAC
6h 36m1 stop
United Airlines Logo
1:00 pm - 11:49 pmJAC-DCA
8h 49m1 stop
$409United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Reagan-National to Idaho flights

Get data-powered insights and trends into flights from Reagan-National 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. Reagan-National 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. Reagan-National 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. Reagan-National Airport to Idaho is January, when tickets cost $335 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $654 and $603 respectively.

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

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

If you are looking for a flight deal from Reagan Washington National Airport to Idaho, look for departures on Tuesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Idaho, Saturday is the cheapest day to fly and Sunday is the most expensive.

Good to know

Low seasonJanuary
Cheapest flight$141
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Reagan Washington National Airport to Boise

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Reagan Washington National 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 Reagan Washington National Airport to Idaho.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Reagan Washington National 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 Reagan Washington National 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 Reagan Washington National 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 Reagan Washington National 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 Reagan Washington National 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 morning, when round-trip flights cost $521 on average. Morning departures are around 5% cheaper than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the evening, which is peak travel time and where the average cost of a ticket is $547.

Reviews of the top 3 airlines serving from Reagan-National 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 Reagan-National 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.
7.9
DeltaOverall score based on 8003 reviews
8.2Boarding
7.9Comfort
7.9Entertainment
8.5Crew
7.3Food
Airline reviews

I truly love flying with Delta. They have always treated me with the upmost respect

10.0 ExcellentMAYRA, Nov 2025JFK - MIA
Read more Delta reviews

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

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 .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We loved the steward on the plane. He made the night enjoyable

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

Everything you need to know for your flight from Reagan-National to Idaho

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