$121 Find Cheap Flights from Reagan Washington National Airport to Idaho - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Idaho departing on 8/16. 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.
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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

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$293
Hailey
Hailey2 stops$534
Lewiston
Lewiston1 stop$1,071
Twin Falls
Twin Falls1 stop$814
Pocatello
Pocatello2 stops$654
Spokane
Spokane1 stop$295
Boise
Boise1 stop$293
Hailey
Hailey2 stops$534
Lewiston
Lewiston1 stop$1,071
Twin Falls
Twin Falls1 stop$814
Pocatello
Pocatello2 stops$654
Spokane
Spokane1 stop$295

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

Wed, Aug 12 - Thu, Aug 20
American Airlines Logo
7:35 am - 2:29 pm
DCA
-
BOI
8h 54m
1 stop
American Airlines Logo
12:12 pm - 11:58 pm
BOI
-
DCA
9h 46m
1 stop
$293American Airlines
Sat, Aug 29 - Sat, Sep 5
American Airlines Logo
9:07 am - 1:37 pm
DCA
-
GEG
7h 30m
1 stop
American Airlines Logo
12:44 pm - 11:58 pm
GEG
-
DCA
8h 14m
1 stop
$295American Airlines
Sun, Sep 13 - Thu, Sep 24
Frontier Logo
7:00 am - 12:04 pm
DCA
-
BOI
7h 04m
1 stop
Frontier Logo
12:59 pm - 9:58 pm
BOI
-
DCA
6h 59m
1 stop
$303Frontier
Tue, Sep 29 - Tue, Oct 6
Delta Logo
7:45 am - 12:58 pm
DCA
-
GEG
8h 13m
1 stop
Delta Logo
2:05 pm - 11:29 pm
GEG
-
DCA
6h 24m
1 stop
$307Delta
Fri, Sep 18 - Mon, Sep 21
Delta Logo
6:05 am - 1:44 pm
DCA
-
BOI
9h 39m
1 stop
Delta Logo
2:11 pm - 11:43 pm
BOI
-
DCA
7h 32m
1 stop
$317Delta
Tue, Sep 15 - Sun, Sep 20
Frontier Logo
7:00 am - 12:04 pm
DCA
-
BOI
7h 04m
1 stop
Frontier Logo
12:59 pm - 9:58 pm
BOI
-
DCA
6h 59m
1 stop
$332Frontier
Tue, Oct 27 - Sat, Oct 31
Alaska Airlines Logo
8:00 am - 3:35 pm
DCA
-
IDA
9h 35m
1 stop
Alaska Airlines Logo
6:09 am - 4:25 pm
IDA
-
DCA
8h 16m
1 stop
$468Alaska Airlines
Sat, Aug 29 - Tue, Sep 1
United Airlines Logo
4:20 pm - 8:40 pm
DCA
-
JAC
6h 20m
1 stop
United Airlines Logo
7:15 am - 3:42 pm
JAC
-
DCA
6h 27m
1 stop
$529United Airlines
Sat, Jul 18 - Wed, Jul 22
United Airlines Logo
3:05 pm - 9:00 pm
DCA
-
JAC
7h 55m
1 stop
United Airlines Logo
7:30 am - 3:52 pm
JAC
-
DCA
6h 22m
1 stop
$548United Airlines
Sat, Jul 4 - Wed, Jul 8
Alaska Airlines Logo
8:00 am - 9:38 am
DCA
-
SUN
27h 38m
1 stop
Alaska Airlines Logo
10:20 am - 9:59 pm
SUN
-
DCA
9h 39m
1 stop
$569Alaska Airlines
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.

How much is a round-trip flight from Washington, D.C. Reagan-National Airport to Idaho?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Reagan-National Airport to Idaho departing in August.

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 February, when tickets cost $0 (return) on average. On the other hand, the most expensive months are March and January, when the average cost of round-trip tickets is $464 and $292 respectively.

Good to know

Low seasonFebruary
Cheapest flight$121
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly with an average 1% increase in price.
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.

Reviews of the top 4 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
Alaska AirlinesOverall score based on 12581 reviews
7.8Comfort
7.0Food
8.5Crew
8.1Boarding
7.0Entertainment
Airline reviews

It departed an hour and a half late because the crew got in late the previous night due to weather related problems. So we got into LA later than anticipated and traffic was much worse.

6.0 GoodAnonymous, May 2026
DCA - LAX
Read more Alaska Airlines reviews

It departed an hour and a half late because the crew got in late the previous night due to weather related problems. So we got into LA later than anticipated and traffic was much worse.

Good. I didn’t order food and there was no entertainment available.

It was not a good experience, the flight was delayed 3 hours, the gate staff were super pushy to get bags checked claiming it was a full flight, there were about a dozen open seats from what I could tell. The intercom from the pilot seemed to be broken, it sounded like the pilot was speaking with a mouth full of marbles.

Flight cancelled and deplaned. Rescheduled 8 hours later at a different airport. Ended up at destination but late.

The seats are very small. I’m 5’ 3”, so don’t think I should notice. The food selection was non existent and very disappointing. 5 hour flight plus TSA, etc. I would have appreciated a small salad, crudités. Something fresher not just chips.

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.

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.

I was in Comfort and we didn’t get any drinks, chips or anything! First Class got full service on the flight and Comfort got nothing. Seat was horrible and uncomfortable

The gentleman at the gate I think his name is RIE was exceptional

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

Having to up charge for a seat assignment is not good. Delta can do better

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

I wouldn't say I liked being forced to check my small roller bag at the gate; too many people had bags and were in a higher boarding group.

715PM departure was 2.5 hours late. Received hotel & food voucher but after we already booked a room. Entire team just seemed like they were 2-3 steps behind in execution, and notifcations.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Never nice, United Express partners always do an amazing job.

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

The flight was on time and the crew were great.

I was forced to gate check my carry on luggage. Somehow it did not arrive at my destination. I still have yet to receive my bag r days after arrival.

Boarding area is a mess. Lines not bounded and gate area too small. Food options (on this specific flight) were poor and you couldn’t pick part of it since it was like a mash of chicken and other unrecognisable stuff. Comfort of seats along with child noise made it difficult to get a good sleep. Last, the flight attendant that served my aisle was rude (others seemed fine) towards me and others.

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

Overall a good experience, however Wifi was not working on the flight.

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

Delays with no explanation. It could have been handled better.

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

This was one of the most frustrating travel experiences I've had to date. I had changed my flight day of to this one as it was slated to depart on time. It ended up being so delayed that my original flight took off before this one did. The boarding process began but eventually stopped and everyone had to get off the plane as a problem was identified. The person at the front desk just tried to laugh it off as if this wasn't already a huge inconvenience. From there, we eventually got to board only to sit at the gate for an additional hour because of some additional issue. This was extremely frustrating and caused a lot of stress.

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

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

Information on your arrival and departure airports