$177 Find Cheap Flights from Washington Dulles Airport to Idaho - Compare and Save

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Cheap Flights from Dulles Intl to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sort by: Cheapest
Boise
7h 04m2 stops
from $353per person
Idaho Falls
7h 04m2 stops
from $409per person
Hailey
Hailey
7h 14m2 stops
from $411per person
Booking Insights

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Idaho flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Washington, D.C. Dulles Intl Airport to Idaho recently?

The cheapest fares from Washington, D.C. Dulles Intl Airport to Idaho on KAYAK in the last week were to Boise Air Term. Gowen Fld (BOI) from $353 round-trip and to Idaho Falls Fanning Field (IDA) from $576 round-trip.

How do fares into airports in Idaho compare?

According to KAYAK data from the last 12 months, the cheapest airports to fly into Idaho from Washington, D.C. Dulles Intl Airport are:

• Boise Air Term. Gowen Fld (BOI) (avg. price $417)
• Idaho Falls Fanning Field (IDA) (avg. price $524)
• Hailey Sun Valley-Friedman (SUN) (avg. price $563)

Are flights from Washington, D.C. Dulles Intl Airport to Idaho cheaper or more expensive than last year?

Fares from Washington, D.C. Dulles Intl Airport to Idaho are about 28% lower than they were in November last year, averaging $358 round-trip.

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

January is typically the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Idaho, with round-trip fares averaging $388. June and March are usually the most expensive, averaging $626 and $598, respectively.

How do fares from Washington, D.C. Dulles Intl Airport to Idaho vary by day of the week?

On average, Tuesday is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Idaho and Sunday is the most expensive. Looking at the past 12 months of KAYAK data, it's 33% more expensive to fly on a Sunday compared to Tuesday.

What's the best time of day to fly from Washington, D.C. Dulles Intl Airport to Idaho?

It's cheapest to fly to Idaho in the morning with average prices of $497. The afternoon is the most expensive time to fly, with average prices of $556.

Key details for Washington, D.C. Dulles Intl Airport to Idaho flights

Low season

January

Cheapest flight

$177
Beat the crowds with an average 45% drop in travelers.
The most popular month to fly with an average 51% increase in travelers.
One-way flight from Washington, D.C. Dulles Intl Airport to Boise

Your Washington, D.C. Dulles Intl Airport to Idaho flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Washington, D.C. Dulles Intl Airport to Idaho?

    Yes. Fares from Washington, D.C. Dulles Intl Airport to Idaho are low right now. As a rule of thumb, a round-trip under $379 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Washington, D.C. Dulles Intl Airport to Idaho?

    Over the past 12 months, round-trip fares from Washington, D.C. Dulles Intl Airport to Idaho have typically cost between $379 and $680.

  • What are the main airports serving Idaho?

    There are 9 airports in Idaho. 60% of KAYAK users choose Boise Air Term. Gowen Fld (BOI) as their arrival airport, while 31% choose Idaho Falls Fanning Field (IDA).

  • Which airlines fly nonstop from Washington, D.C. Dulles Intl Airport to Idaho?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Washington, D.C. Dulles Intl Airport to Idaho. One-stop options include:

    • United Airlines
    • Delta
    • American Airlines

  • Which destinations in Idaho can I fly nonstop from Washington, D.C. Dulles Intl Airport?

    Based on the flight schedule for the next 3 months, there are no nonstop flights from Washington, D.C. Dulles Intl Airport to Idaho. The most popular destination you can reach with one stop is Boise.

  • Which cabin classes are available from Washington, D.C. Dulles Intl Airport to Idaho?

    On flights from Washington, D.C. Dulles Intl Airport to Idaho you can book Economy Class or First Class.

  • What are some popular landmarks around Idaho?

    Idaho is home to many popular sights. KAYAK travelers' favorites include:

    • Idaho Central Arena
    • Julia Davis Park
    • Discovery Center of Idaho
    • Boise Art Museum

Your guide to booking Washington, D.C. Dulles Intl Airport to Idaho flights

Get tips on when to book, when to fly and what to know before your trip.
  • Flexible with your dates? Fly in January to save some money. It's typically the cheapest month on this route, while flights in June will cost you the most.
  • Fly out on a Tuesday to get the cheapest fares. Avoid Sunday flights, which are about 33% more expensive.
  • If you're watching your budget, fly into Boise Air Term. Gowen Fld (BOI) which has the lowest average airfare in the region. Just remember to budget for any onward travel by bus, car or domestic flight.
  • Start your trip in Boise, the most popular destination in Idaho. From there, it's easy to continue on to other popular spots such as Idaho Falls, Coeur d'Alene and Twin Falls.

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

 
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
SouthwestOverall score based on 4221 reviews
8.6Crew
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
Airline reviews

Terrible, decided to delay our flight since another flight require a flight captain

2.0 MediocreChih Hsuan, Nov 2026
Read more Southwest reviews

Terrible, decided to delay our flight since another flight require a flight captain

staff and crew were great but the flight delays for the last few flights are insane. After a long day of work and you will get a notification of flights delay is not the message we want to see. And for some reason it keeps happening often this year.

I love southwest. I can not wait until all the planes convert to the upgraded planes. I love the charging option and the newer seats. Thank you from a very loyal Southwest customer.

My return flight was much better than the flight there! I paid for seat to Veagas but not the return. Thankgoodness they assigned me a seat with additional leg room as I have back and leg problems. I really appreciate it. With the flight already being super expensive due to gas prices and having to pay for bags (now) I needed to save some money.

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