- Argentina (Español)
- Australia (English)
- Österreich (Deutsch)
- Belgique (Français)
- België (Nederlands)
- Bolivia (Español)
- Brasil (Português)
- Canada (English)
- Canada (Français)
- Chile (Español)
- Colombia (Español)
- Costa Rica (Español)
- Česká republika (Čeština)
- Danmark (Dansk)
- Deutschland (Deutsch)
- Germany (English)
- Ecuador (Español)
- El Salvador (Español)
- España (Español)
- Espanya (Català)
- France (Français)
- Ελλάδα (Ελληνική)
- Guatemala (Español)
- Honduras (Español)
- Hong Kong (English)
- 香港 (中文)
- India (English)
- Indonesia (Bahasa Indonesia)
- Indonesia (English)
- Ireland (English)
- Israel (English)
- ישראל (עִבְרִית)
- Italia (Italiano)
- 日本 (日本語)
- Malaysia (English)
- Malaysia (Melayu)
- México (Español)
- Nederland (Nederlands)
- New Zealand (English)
- Nicaragua (Español)
- Norge (Norsk)
- Panamá (Español)
- Paraguay (Español)
- Perú (Español)
- Philippines (English)
- Polska (Polski)
- Portugal (Português)
- Puerto Rico (Español)
- República Dominicana (Español)
- România (Română)
- المملكة العربية السعودية (العَرَبِيَّة)
- Saudi Arabia (English)
- Suisse (Français)
- Schweiz (Deutsch)
- Singapore (English)
- South Africa (English)
- 대한민국 (한국어)
- Suomi (Suomi)
- Sverige (Svenska)
- 台灣 (中文)
- ประเทศไทย (ภาษาไทย)
- Thailand (English)
- Türkiye (Türkçe)
- Україна (Українська)
- United Arab Emirates (English)
- United Kingdom (English)
- United States (English)
- Estados Unidos (Español)
- Uruguay (Español)
- Venezuela (Español)
- Vietnam (English)
- Việt Nam (Việt)

Flight Deals
Cheap Flights from Dulles Intl to Idaho
Cheapest round-trip prices found by our users on KAYAK in the last 5 daysBook 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
Wed, Dec 2 - Tue, Dec 8
7:06 pm - 12:10 amIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 04m1 stop Minneapolis St Paul
1:47 pm - 12:41 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
8h 54m1 stop Atlanta Hartsfield-Jackson
$321Delta
Sat, Feb 13 - Tue, Feb 16
7:00 am - 1:13 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 13m1 stop Seattle/Tacoma Intl
3:08 pm - 11:31 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
6h 23m1 stop Minneapolis St Paul
$321Delta
Wed, Dec 2 - Wed, Dec 9
7:00 am - 4:04 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
11h 04m1 stop Seattle/Tacoma Intl
12:20 pm - 12:31 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
10h 11m1 stop Seattle/Tacoma Intl
$321Delta
Sat, Dec 5 - Wed, Dec 9
7:00 am - 3:26 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
10h 26m1 stop Seattle/Tacoma Intl
6:37 am - 4:15 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
7h 38m1 stop Seattle/Tacoma Intl
$360Alaska Airlines
Thu, Dec 10 - Thu, Dec 31
7:00 am - 3:26 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
10h 26m1 stop Seattle/Tacoma Intl
6:31 am - 4:28 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
7h 57m1 stop Seattle/Tacoma Intl
$360Alaska Airlines
Mon, Dec 14 - Thu, Dec 17
2:35 pm - 9:30 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 55m1 stop San Francisco
11:55 am - 10:04 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
8h 09m1 stop San Francisco
$368United Airlines
Mon, Dec 7 - Mon, Dec 14
6:42 pm - 3:27 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
22h 45m2 stops San Diego Sacramento Intl
2:05 pm - 5:35 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
13h 30m1 stop Seattle/Tacoma Intl
$373Alaska Airlines
Fri, Dec 4 - Tue, Dec 8
8:15 am - 2:50 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 35m1 stop San Francisco
6:10 am - 4:08 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
7h 58m1 stop San Francisco
$377United Airlines
Fri, Dec 4 - Mon, Dec 7
6:15 am - 2:50 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
10h 35m1 stop San Francisco
2:48 pm - 11:15 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
6h 27m1 stop Denver Intl
$377United Airlines
Mon, Jan 11 - Sat, Jan 16
7:00 am - 1:12 pmIAD Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
8h 12m1 stop Dallas/Fort Worth
6:26 am - 4:18 pmIDA Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
7h 52m1 stop Dallas/Fort Worth
$409American Airlines
Recent one-way flight deals from Dulles Intl to Idaho
Sat, Dec 5
7:00 am - 12:11 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 11m1 stop Salt Lake City
$161Delta
Wed, Jan 20
4:15 pm - 9:33 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 18m1 stop Denver Intl
$161United Airlines
Wed, Apr 14
2:36 pm - 11:41 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
11h 05m1 stop San Francisco
$177United Airlines
Tue, Dec 8
6:00 am - 1:44 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
9h 44m1 stop Atlanta Hartsfield-Jackson
$177Delta
Thu, Dec 31
6:45 am - 1:38 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 53m1 stop Denver Intl
$177United Airlines
Thu, Feb 11
7:20 am - 2:13 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 53m1 stop Minneapolis St Paul
$184Delta
Fri, Dec 25
7:05 am - 3:27 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
10h 22m1 stop Seattle/Tacoma Intl
$200Alaska Airlines
Fri, Dec 25
7:05 am - 3:27 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
10h 22m1 stop Seattle/Tacoma Intl
$201Alaska Airlines
Tue, Nov 17
7:18 am - 1:51 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 33m1 stop Dallas/Fort Worth
$207American Airlines
Wed, Dec 2
12:06 pm - 3:15 pmIAD Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
29h 09m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$218Multiple Airlines
Recent last minute flight deals from Dulles Intl to Idaho
Wed, Nov 11 - Wed, Nov 18
5:17 pm - 11:49 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 32m1 stop Seattle/Tacoma Intl
1:53 pm - 5:44 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
13h 51m1 stop Seattle/Tacoma Intl
$403Alaska Airlines
Wed, Nov 11 - Tue, Nov 17
5:17 pm - 11:49 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
8h 32m1 stop Seattle/Tacoma Intl
12:49 pm - 5:44 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
14h 55m1 stop Seattle/Tacoma Intl
$403Alaska Airlines
Wed, Nov 11 - Sat, Nov 14
5:20 pm - 10:59 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 39m1 stop Denver Intl
2:51 pm - 11:15 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
6h 24m1 stop Denver Intl
$413United Airlines
Sun, Nov 15 - Sat, Nov 21
8:05 am - 1:39 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 34m1 stop Atlanta Hartsfield-Jackson
3:00 pm - 11:21 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
6h 21m1 stop Minneapolis St Paul
$413Delta
Wed, Nov 11 - Tue, Nov 17
7:00 am - 4:05 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
11h 05m1 stop Seattle/Tacoma Intl
12:13 pm - 12:20 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
10h 07m1 stop Seattle/Tacoma Intl
$413Delta
Wed, Nov 11 - Sat, Nov 14
6:58 pm - 11:59 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
7h 01m1 stop Minneapolis St Paul
8:55 am - 7:54 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
8h 59m1 stop Seattle/Tacoma Intl
$413Delta
Wed, Nov 11 - 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
6:06 am - 6:47 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
10h 41m2 stops Phoenix Sky Harbor Intl Charlotte Douglas
$455American Airlines
Wed, Nov 11 - Wed, Nov 18
10:44 am - 10:42 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld
13h 58m2 stops Charlotte Douglas Dallas/Fort Worth
6:06 am - 6:47 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl
10h 41m2 stops Phoenix Sky Harbor Intl Charlotte Douglas
$574American Airlines
Tue, Nov 10 - Thu, Nov 12
7:46 am - 3:18 pmIAD Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
9h 32m1 stop Seattle/Tacoma Intl
6:04 am - 4:14 pmIDA Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
8h 10m1 stop Seattle/Tacoma Intl
$602Alaska Airlines
Sun, Nov 15 - Sat, Nov 21
8:20 am - 1:28 pmIAD Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
7h 08m1 stop Denver Intl
2:35 pm - 11:15 pmIDA Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
6h 40m1 stop Denver Intl
$621United 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.
Prices
Airlines
More
What is the cheapest Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. 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 January, when tickets cost $388 (return) on average. On the other hand, the most expensive months are June and February, when the average cost of round-trip tickets is $757 and $684 respectively.
How long does a flight from Washington, D.C. Dulles Intl Airport to Idaho take?
The duration of a flight to Idaho depends on your arrival airport. The shortest routes to Idaho from Washington, D.C. Dulles Intl Airport are to Idaho Falls, which takes 7h 08m, Boise, which takes 7h 08m, and Lewiston, which takes 7h 31m.
Which cabin class options are there for flights between Washington, D.C. Dulles Intl Airport 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 | August |
Cheapest flight | $161 |
FAQs - booking Idaho flights
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.
8.0
SouthwestOverall score based on 4216 reviews
7.0Food
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
Airline reviews
My first flight from LGA to STL was not good. They didn't do service until over halfway through the flight, the internet didn't really work, and the crew all seemed like they didn't want to be there.
4.0 OkayTatyana, Nov 2026
My first flight from LGA to STL was not good. They didn't do service until over halfway through the flight, the internet didn't really work, and the crew all seemed like they didn't want to be there.
We were stressed about landing as our connecting flight was about to start boarding, being unfamiliar with the airport or where the gates were. We exited the plane to discover we were at the gate we needed. We would be getting back on the same plane but nobody told us we could have just stayed onboard. My wife and I were seated on aisle seats across from each other. We asked if there was a way we could sit together. Once we were at cruising altitude they let us move to an unoccupied row so that was nice.
It’s Southwest. The seats are small, the snacks are meh, it’s $50 to check a bag. It’s exactly fine. Could have been better. Could have been worse. It’s not Spirit
They delayed my flight all day but didn't try to reschedule me until all other options were gone. Ended up on a red eye. Not happy. Lesson learned, don't book the last flight from SJC to RDU.
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!
1. The internet with T-Mobile didn't work, so I had to pay $8 :( 2. We stayed more almost 40 minutes because our arrival gate was not available
Trouble linking to the Tmobile wifi. The legroom on the 737 was fantastic. No more knees touching the seat back in front. Plenty of charging plugs and inovative clips to hold phones and tablets.
I ended up having to sit next to a rather large individual who spilled over into my seat the entire flight. My neck and shoulder hurt from having to sit awkwardly for over 5 hours because this person didn't fit in their seat.
The agents were super helpful. I was traveling with my mother inlaw who needed whell chair assisstance. The help and accomodation from the checkin crew, to the boarding crew and inflight crew was excellent.
The food was terrible, worse that what you get with UA, an already one of the lowest standards to beat. How cheap one could be, providing that kind of junk food in first class. Unbelievable! The seats were not very comfortable either. And there were no screens either, not that I cared much but for you to know.
The aircraft was extremely warm the entire flight. After we landed we were stuck on the plane for another 45 minutes without a gate to deboard from. The smell of exhaust from the engines in the cabin along with the heat inside the cabin made the flight uncomfortable.
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.
The Boeing 737 plane is old with narrow seats and tiny lavatories. The flight was delayed for over 2 hours. The flight attendants were discourteous.
Only offered water, no snacks provided, and it was cold on the plane, everyone was wearing sweatshirt or jacket in June. I asked for blanket, but crew said they didnt have anything and would turn the heat up, that didn't happen, so for 6 hours I remained cold.
One of the stewardess, Tre, went above and beyond to ensure my comfort!
We experienced delays in small increments that added up to more than an hour. At the gate, staff showed little concern and compared our delay with the inbound flight’s two-hour tarmac wait, which didn’t address our situation. Once onboard, the flight attendants seemed tired and unfriendly. I understand delays are frustrating for everyone, but passengers shouldn’t feel blamed for them. During the flight, a bright light above the emergency exit stayed on. It was concerning, and no one explained it or offered passengers the option to move. After landing, we waited about 30 minutes on the tarmac for a gate, then waited again for an agent to connect the plane to the terminal. From the Reagan gate staff to the cabin crew and RDU personnel, the service felt dismissive throughout. Overall, this was a stressful trip and a very disappointing customer-service experience
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.
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.
Terrible boarding - 4 flights boarded from the same gate. Chaos there; long ramps to the plane.
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.
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
Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.
More options for your flight from Dulles Intl to Idaho
Complete your trip to Idaho with a hotel stay or car rental
Information on your arrival and departure airports
Cabin class types available on flights to Dulles Intl
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 domestic origins to Dulles Intl
Flights from all regions of Dulles Intl 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.
Flights to popular cities in Idaho
Flights to Boisefrom $401
Flights to Idaho Fallsfrom $409
Flights to Jacksonfrom $493
Flights to Lewistonfrom $457
Flights to Spokanefrom $367
Flights to Twin Fallsfrom $806
Flights to West Yellowstonefrom $860