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Flight Deals
Cheap Flights from Washington, D.C. to Idaho
Cheapest round-trip prices found by our users on KAYAK in the last 5 daysBook Cheap Washington, D.C. 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 Washington, D.C. 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 Washington, D.C. to Idaho
Tue, Nov 17 - Tue, Nov 17
6:10 am - 11:00 amBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
6h 50m1 stop Denver Intl
3:30 pm - 12:50 amBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
7h 20m1 stop Denver Intl
$225Southwest
Wed, Dec 2 - Mon, Dec 7
6:10 am - 11:00 amBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
6h 50m1 stop Denver Intl
3:30 pm - 12:50 amBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
7h 20m1 stop Denver Intl
$225Southwest
Mon, Nov 9 - Mon, Nov 16
7:25 pm - 11:59 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
6h 34m1 stop Minneapolis St Paul
11:10 pm - 10:55 amBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
9h 45m1 stop Atlanta Hartsfield-Jackson
$225Delta
Mon, Nov 9 - Tue, Nov 10
7:25 pm - 11:59 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
6h 34m1 stop Minneapolis St Paul
3:00 pm - 11:23 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
6h 23m1 stop Minneapolis St Paul
$225Delta
Thu, Dec 3 - Thu, Dec 10
6:40 am - 1:55 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
9h 15m1 stop Dallas/Fort Worth
1:39 pm - 11:57 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
8h 18m1 stop Chicago O'Hare Intl
$225American Airlines
Tue, Nov 10 - Wed, Nov 18
7:18 am - 12:37 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
7h 19m1 stop Chicago O'Hare Intl
1:24 pm - 11:55 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
8h 31m1 stop Chicago O'Hare Intl
$225American Airlines
Mon, Nov 9 - Tue, Nov 10
6:46 pm - 1:30 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
20h 44m1 stop San Diego
6:21 pm - 5:44 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
9h 23m1 stop Seattle/Tacoma Intl
$225Alaska Airlines
Mon, Nov 9 - Wed, Nov 11
6:46 pm - 1:30 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
20h 44m1 stop San Diego
1:53 pm - 5:44 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
13h 51m1 stop Seattle/Tacoma Intl
$225Alaska Airlines
Wed, Nov 11 - Wed, Nov 18
6:11 am - 11:31 amIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 20m1 stop Chicago O'Hare Intl
12:00 pm - 9:57 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
7h 57m1 stop San Francisco
$261United Airlines
Sat, Jan 16 - Sat, Jan 23
8:15 am - 2:51 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 36m1 stop San Francisco
2:35 pm - 11:26 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
6h 51m1 stop Denver Intl
$261United Airlines
Recent one-way flight deals from Washington, D.C. to Idaho
Wed, Nov 18
6:10 am - 11:00 amBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
6h 50m1 stop Denver Intl
$113Southwest
Tue, Nov 17
7:01 am - 12:33 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
7h 32m1 stop Minneapolis St Paul
$113Delta
Wed, Nov 18
6:00 am - 12:37 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld
8h 37m1 stop Chicago O'Hare Intl
$113American Airlines
Thu, Nov 26
7:00 am - 3:28 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
10h 28m1 stop Seattle/Tacoma Intl
$113Alaska Airlines
Wed, Nov 18
3:45 pm - 10:35 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
8h 50m2 stops Birmingham Denver Intl
$118Southwest
Thu, Nov 26
6:15 am - 2:58 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
10h 43m1 stop San Francisco
$131United Airlines
Thu, Nov 26
7:45 am - 2:58 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld
9h 13m1 stop San Francisco
$131United Airlines
Wed, Nov 18
7:14 am - 1:51 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 37m1 stop Dallas/Fort Worth
$163American Airlines
Wed, Dec 16
7:00 am - 3:26 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
10h 26m1 stop Seattle/Tacoma Intl
$172Alaska Airlines
Tue, Dec 15
7:00 am - 12:42 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
7h 42m1 stop Minneapolis St Paul
$172Delta
Recent last minute flight deals from Washington, D.C. to Idaho
Wed, Oct 28 - Sun, Nov 1
6:13 am - 10:42 amIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
6h 29m1 stop Salt Lake City
1:06 pm - 11:35 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
8h 29m1 stop Salt Lake City
$403Delta
Wed, Oct 28 - Sun, Nov 1
5:00 am - 1:51 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld
10h 51m1 stop Dallas/Fort Worth
12:15 pm - 11:59 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National
9h 44m1 stop Dallas/Fort Worth
$486American Airlines
Wed, Oct 28 - Sun, Nov 1
6:05 am - 12:35 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld
8h 30m1 stop Minneapolis St Paul
3:00 pm - 11:44 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National
6h 44m1 stop Minneapolis St Paul
$501Delta
Wed, Oct 28 - Sun, Nov 1
12:40 pm - 6:03 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 23m1 stop Denver Intl
7:10 pm - 11:55 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
14h 45m2 stops San Francisco Cleveland Hopkins Intl
$538United Airlines
Wed, Oct 28 - Sun, Nov 1
6:11 am - 11:31 amIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 20m1 stop Chicago O'Hare Intl
7:10 pm - 11:55 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
14h 45m2 stops San Francisco Cleveland Hopkins Intl
$538United Airlines
Mon, Oct 26 - Wed, Oct 28
7:25 pm - 1:05 amBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
7h 40m1 stop Las Vegas Harry Reid Intl
3:20 pm - 11:25 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
6h 05m1 stop Denver Intl
$680Southwest
Mon, Oct 26 - Wed, Oct 28
2:50 pm - 11:00 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
10h 10m2 stops Nashville Intl Denver Intl
11:55 am - 11:55 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
10h 00m1 stop Phoenix Sky Harbor Intl
$685Southwest
Tue, Oct 27 - Fri, Oct 30
7:17 am - 2:33 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld
9h 16m1 stop Chicago O'Hare Intl
12:14 pm - 10:54 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington
8h 40m1 stop Dallas/Fort Worth
$695American Airlines
Tue, Oct 27 - Fri, Oct 30
10:59 am - 10:01 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld
13h 02m2 stops San Diego Las Vegas Harry Reid Intl
5:59 am - 4:00 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National
8h 01m1 stop Portland
$813Alaska Airlines
Tue, Oct 27 - Fri, Oct 30
7:02 am - 3:23 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
10h 21m1 stop Seattle/Tacoma Intl
2:06 pm - 11:59 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
7h 53m1 stop Seattle/Tacoma Intl
$825Alaska Airlines
Booking Insights
KAYAK's insights & trends for Washington, D.C. to Idaho flights
Get data-powered insights and trends into flights from Washington, D.C. to Idaho to help you find the cheapest flights, the best time to fly and much more.
Prices
Airlines
More
How much is a round-trip flight from Washington, D.C. 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. to Idaho departing in November.
Flight prices are below average for this route right now.
Flights to Idaho from Washington, D.C. usually cost between $334 and $496 in November.The lowest price found in the past 5 days was $225 on Alaska Airlines (Nov 9-Nov 11).
What is the cheapest Washington, D.C. to Idaho flight route?
Data is based on round-trip flight searches on KAYAK over the past month.
The cheapest ticket to Idaho from Washington, D.C. found in the last 5 days was to Idaho Falls, at $447 round-trip. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Idaho Falls (IDA), and the cheapest round-trip airline ticket found on this route in the last 5 days was $447.
What is the cheapest month to fly from Washington, D.C. 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. 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. to Idaho is May, when tickets cost $389 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $647 and $549 respectively.
How long does a flight from Washington, D.C. to Idaho take?
The duration of a flight to Idaho depends on your arrival airport. The shortest routes to Idaho from Washington, D.C. are to Boise, which takes 6h 53m, Hailey, which takes 7h 20m, and Lewiston, which takes 8h 04m.
Which cabin class options are there for flights between Washington, D.C. and Idaho?
The average price of round-trip flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.
Good to know
Low season | January |
|---|---|
High season | July |
Cheapest flight | $113 |
FAQs - booking Idaho flights
Reviews of the top 4 airlines serving from Washington, D.C. 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.
7.9
SouthwestOverall score based on 4221 reviews
8.6Crew
7.0Food
7.4Entertainment
8.1Boarding
8.0Comfort
Airline reviews
the flight was significantly delayed. Not much was done by the airline to compensate passengers
2.0 MediocreChristopher Ryan, Oct 2026
the flight was significantly delayed. Not much was done by the airline to compensate passengers
the flight itself was totally fine. The crew were great and very helpful. The flight was delayed, however, over an hour without a lot of information as to why.
Had to walk back and forth between concourses to figure out which gate I was supposed to be at. The app and the flight board in the airport had different gates listed. Was told numerous times to check bags only to get on the plane and find that there was plenty of room for bags. The flight was over an hour late which had me landing after the last train departed. WiFi was unusable
My experience was okay I changed my returning flight and I was charged extra money which I dont think should be the case, especially because I experienced small delays from my going flight. And many flights were either canceled or delayed after my original flight time. I believe some customers should have the ability to change flights due to certain situations
It's a shame that SW was previously my preferred carrier until they started imposing all these fees (luggage, seats,etc) and pulling back on other perks. I only flew with them this time due to time frame I needed to be at destination. Wasn't provided gate info during check-in, Gate info wasn't displayed at airport until last minute, gate info didn't match what SW personnel announced at fate. Kind of a mess.
Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.
No delays and arrived to destination 30 min early. Staff was super friendly.
Pretty standard flight. We left late, but arrived early. The wifi entertainment is always nice. The free snacks and beverages are simple, but appreciated. I'm tall and the seats are an issue. I can deal with a short flight, but any longer, I have to find another airline where I know beforehand I have extra legroom.
Awesome experience. No in-flight video or meal. Still do not like the boarding process.
On time, good crew, easy flight. Just like the old days!
delayed take-off, then had to circle in air for awhile, wi-fi did not work, then the cabin got extremely hot multiple times and the luggage was at wrong carousel at LGA. In addition, plenty of overhead space so they checked bags too early. Horrible flight.
WiFi only works on about 75% of my Delta flights. I rarely fly SW, but their WiFi works 100% of the time and is easy to connect. On my DL flight from DCA to BNA today, I try to connect to WiFi for about 30 minutes, but I gave up. I have a lot of work to do, and I lost two hours today. Very frustrating.
I don't know why the crew decided to board 15 minutes early without informing anyone not at the gate. Why would you have the app send a notification that we're boarding on time, instead board early, and then rush me to the gate. Then have me check my carry-on when I specifically packed my bag as to not do so.
Long delays at both DCA and MSP; Crew did not keep us informed (or very little). Airplane was showing signs of heavy use (not up to Delta standards). Food options for Business Class have dropped in quality. After landing we sat on tarmac for maybe 25 minutes with no provided chance to use the bathroom and crew did not tell us what was going on or give an estimated time to expect to be at a gate.
Flight was delayed for about an hour but overall good experience
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.
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.
The couple in front of me were constantly talking over the announcement from the captain and this was annoying me.
Short. Nice quick flight, appreciated after Munich to DC leg.
This was a small aircraft (relatively) and we were delayed half an hour on takeoff, which is not the airlines fault.
Flight delayed over an hour with plane on runway because of weather in an area of the country we were not in or flying to.
Flight attendant incredibly rude. Stuck her finger in my drink and didn’t even have the courtesy to apologize.
The food was horrible. There was no. Wifi, and it was just terrible from bangkok to d. C
Crew was great. Seats are cramped and uncomfortable and I’m a small person.
the seat has a problem. the back had a hole.
My flight was delayed so bad i missed u it so i just said never mind
Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all
comfy and spacious seats for premium economy, nice flight attendants. only problem was the wifi did not work, and my entertainment screen was locked in Arabic language and all kids shows with no way of seemingly changing it. but the flight was fine and I arrived with no issues
Flight was delayed which isn’t the airline’s fault, but the communication around it was terrible. I left the lounge to show up at the gate to board at the time in my app, and the flight in front of mine was still boarding and the inbound plane hadn’t even taken off yet. Delays were slow to show up in my app. Improved communication could have let me have a more pleasant experience in the lounge vs waiting 1.5 hours at the gate.
Wifi was good on the flight from DCA to Dallas and terrible on the flight from Dallas to Tucson. The forward head in the flight from Dallas to Tucson was putrid smelling entirely urine soaked. The flight from DCA to Dallas was delayed by almost 30 min with a plane change.
Sat on tarmac at arrival at DFw for more than 30 min waiting for a gate.
Business Class layout was excellent. The seats were not nearly as comfortable as UA, Delta or Air New Zealand (the best). Nor were the controls as flexible. Food was okay but not great. Breakfast pancakes were like cardboard.
I am Plstinum Pro snd was standby on earlier flight. They gave seats to people that asked rather than follow standby order. When realized what was happening was too late to get on as no seats left. My scheduled flight was late. Then filled the seat beside me Ruth rude person that they had to move from her original seat
I have yet to come across an AA agent or flight attendant that is friendly. They really inhibit a good experience.
the flight is delayed, which is not uncommon but the communication was still getting hopes on reaching on time which didn't happen. When I boarded the flight it was so like unimaginably filthy. My seat belt had some sticky stuff to it like food or something from before and the space below the arm rest is accumulated dust and waste like from few months i have the pictures. Cheery on top, the airhostess was an old lady who was so bossy and mad for no reason and bossing around everyone!! worst experience ever!!
Flight was good, little delayed because of busy plane traffic
Flight was delayed multiple times and rerouted to different concourses in the airport because of all of American's delays. App/boarding pass would not update with changed gate information.
More options for your flight from Washington, D.C. to Idaho
Complete your trip to Idaho with a hotel stay or car rental
Cabin class types available on flights to Idaho
Cabin classes available on flights to Idaho. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights from other airports in Washington, D.C. to Idaho
Flights from all airports in Washington, D.C. to Idaho. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights to other popular destinations
The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.