IAD - BOI

$150 Find Cheap Flights from Washington Dulles Airport to Boise

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Boise departing on 5/6. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to Boise

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Boise, 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 Boise, as well as popular online travel agencies
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Cheap Flights from Dulles Intl to Boise

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Boise 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.

Recent round-trip flight deals from Dulles Intl to Boise

KAYAK's recommended round-trip deals from the most popular airlines that fly from Dulles Intl to Boise.
Discover the best prices for you by selecting your travel dates on KAYAK.
Alaska Airlines Logo
6:30 am - 2:05 pmIAD-BOI
9h 35m1 stop
Alaska Airlines Logo
1:00 pm - 7:36 amBOI-IAD
16h 36m2 stops
$293Alaska Airlines
Find Deal
Wed, May 28 - Wed, Jun 4
Hawaiian Airlines Logo
7:00 am - 3:00 pmIAD-BOI
10h 00m1 stop
Hawaiian Airlines Logo
8:46 pm - 7:32 amBOI-IAD
8h 46m1 stop
$300Hawaiian Airlines
Find Deal
Thu, Sep 18 - Sat, Sep 27
United Airlines Logo
6:35 am - 1:49 pmIAD-BOI
9h 14m1 stop
United Airlines Logo
7:00 am - 3:32 pmBOI-IAD
6h 32m1 stop
$301United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
Delta Logo
5:24 pm - 12:22 amIAD-BOI
8h 58m2 stops
Delta Logo
7:49 pm - 5:52 amBOI-IAD
8h 03m1 stop
$306Delta
Find Deal
Thu, May 29 - Thu, Jun 5
Delta Logo
1:00 pm - 12:17 amIAD-BOI
13h 17m2 stops
Delta Logo
11:45 am - 11:34 pmBOI-IAD
9h 49m2 stops
$311Delta
Find Deal
Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
6:48 am - 11:43 amIAD-BOI
6h 55m1 stop
United Airlines Logo
7:07 pm - 5:08 amBOI-IAD
8h 01m1 stop
$314United Airlines
Find Deal
Thu, Jun 5 - Sun, Jun 8
Southwest Logo
5:05 pm - 9:40 pmIAD-BOI
6h 35m1 stop
Southwest Logo
8:45 am - 10:05 pmBOI-IAD
11h 20m2 stops
$351Southwest
Find Deal
Sat, Aug 23 - Wed, Aug 27
American Airlines Logo
7:09 am - 12:34 pmIAD-BOI
7h 25m1 stop
American Airlines Logo
1:41 pm - 10:30 pmBOI-IAD
6h 49m1 stop
$380American Airlines
Find Deal
Wed, Sep 17 - Sun, Sep 21
American Airlines Logo
6:27 am - 2:45 pmIAD-BOI
10h 18m1 stop
American Airlines Logo
3:35 pm - 11:00 amBOI-IAD
17h 25m1 stop
$386American Airlines
Find Deal
Sat, Jun 14 - Sun, Jun 15
Southwest Logo
7:50 pm - 12:30 amIAD-BOI
6h 40m1 stop
Southwest Logo
6:00 am - 10:05 pmBOI-IAD
14h 05m2 stops
$391Southwest
Find Deal
Fri, Aug 1 - Tue, Aug 5
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KAYAK's insights & trends for Dulles Intl to Boise flights

Get data-powered insights and trends into flights from Dulles Intl to Boise to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Boise?

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

If your flying dates are flexible, you should consider flying to Boise on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Washington Dulles Airport to Boise. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Boise?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Boise, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Boise, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonFebruary
High seasonOctober
Cheapest flight$150
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Washington Dulles Airport to Boise

When to book flights from Dulles Intl to Boise

Are your dates flexible? Find out the best times to travel from Dulles Intl to Boise based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Boise flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Boise?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Boise was $150 for a one-way ticket and $293 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Boise?

    No, a passport isn't needed to fly from Washington Dulles Airport to Boise. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Boise?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Boise?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Boise, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Boise, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Boise are Delta and Alaska Airlines. With an average price for the route of $453 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $485 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Boise?

    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 Washington Dulles Airport to Boise.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise from Washington Dulles Airport 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 Washington Dulles Airport to Boise?

    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 to Boise with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and BOI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Boise?

    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 to Boise from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 4 airlines serving from Dulles Intl to Boise

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Boise. 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 Dulles Intl to Boise? 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
Alaska AirlinesOverall score based on 9968 reviews
7.1Food
7.9Comfort
8.5Crew
7.1Entertainment
8.2Boarding
Airline reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

2.0 MediocreAnonymous, Apr 2025SEA - BOI
Read more Alaska Airlines reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

Flight 351 SEA to BOI was terrible. We got to cruising altitude and I needed to use the restroom but the fasten seatbelt sign never came off. There was no turbulence and I'd felt the plane level off so I stood up to use the restroom about 15 minutes after we leveled off. The stewardess went over the intercom and said I needed to be seated because the captain hadn't turned off the fasten seatbelt sign....Which... Fair.... But not five minutes later she went and used the bathroom. Felt very unprofessional to leave a paying customer with a burning urethra for the entire flight and bark at them to sit down and still use the bathroom yourself. They never did turn off the seatbelt sign.

Flight was smooth, but the overhead bins were not deep enough to stow bags vertically and we ran out of room - even with 8 passengers voluntarily gate-checking their bags.

Amazing. They work with my disabilities with such kindness, attention, wnd diligence. They make it easy for those of us who need a little more extra care.

Flight delayed due to engine issue. For 3+ hours still not on flight

Crew was very good. Problem was not Alaska Airlines’ fault, there was a horrible, squealing, screaming kid near me.

There was an issue with water that led to us not having potable water onboard. They dumped the onboard water and we were two hours late taking off.

The flight from San Diego to San Jose gate 28A The two persons working there didn’t even turn on the display board. The display board saying to Sacramento. When I asked she was rude and showed the board . Then he realized And changed. Every one was confused because we are running late to catch that flight coming from IAD. Very irresponsible staff.

Great crew, great boarding, old B-list movies, no free meal service, child kicking my seat back all flight long, early arrival, then 40 minute, confused wait for bags.

Appreciate efficiency and early arrivals. Missed video on such a long flight (DCA to SFO).

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

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 worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

A bit rush for transit. Food and entertainment are not available

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

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