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IAD - BOI

$178 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 5/18. 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
0 bags
Tue 6/4
Tue 6/11

Search 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
In the last 7 days travelers have searched 42,830,901 times on KAYAK, and here is why:

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

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Cheap flight deals from Dulles Intl to Boise (IAD-BOI)

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:30 am - 5:07 pmIAD-BOI
7h 37m1 stop
6:20 pm - 11:20 amBOI-IAD
15h 00m1 stop
$299Sun Country Air
Find Deal
Wed, Aug 14 - Wed, Aug 21
11:27 am - 4:54 pmIAD-BOI
7h 27m1 stop
6:00 pm - 11:17 amBOI-IAD
15h 17m1 stop
$315Sun Country Air
Find Deal
Wed, Jul 17 - Wed, Jul 24
6:24 am - 2:08 pmIAD-BOI
9h 44m1 stop
7:30 pm - 6:05 amBOI-IAD
8h 35m1 stop
$388Delta
Find Deal
Tue, Jul 30 - Tue, Aug 6
5:03 am - 12:39 pmIAD-BOI
9h 36m2 stops
1:31 pm - 11:22 pmBOI-IAD
7h 51m1 stop
$391American Airlines
Find Deal
Wed, Aug 14 - Sat, Aug 24
6:10 am - 1:50 pmIAD-BOI
9h 40m2 stops
1:15 pm - 11:42 pmBOI-IAD
8h 27m1 stop
$393Delta
Find Deal
Wed, Sep 4 - Tue, Sep 10
2:05 pm - 11:34 pmIAD-BOI
11h 29m2 stops
6:04 pm - 8:36 amBOI-IAD
12h 32m2 stops
$395American Airlines
Find Deal
Wed, Sep 18 - Tue, Sep 24
6:10 pm - 11:59 pmIAD-BOI
7h 49m1 stop
7:49 am - 5:40 amBOI-IAD
19h 51m1 stop
$440Alaska Airlines
Find Deal
Sat, May 25 - Fri, May 31
6:05 pm - 12:35 pmIAD-BOI
20h 30m1 stop
6:49 pm - 5:40 amBOI-IAD
8h 51m1 stop
$441Alaska Airlines
Find Deal
Fri, May 31 - Fri, Jun 7
6:30 am - 11:37 amIAD-BOI
7h 07m1 stop
7:07 pm - 5:23 amBOI-IAD
8h 16m1 stop
$609United Airlines
Find Deal
Thu, Jun 20 - Mon, Jun 24
10:00 pm - 11:17 amIAD-BOI
15h 17m2 stops
2:15 pm - 11:04 pmBOI-IAD
6h 49m1 stop
$626United Airlines
Find Deal
Sat, May 18 - Sat, May 25

Flights from Dulles Intl to Boise - Travel Insights & Trends

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 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, Sunday is the most expensive day to fly from Washington Dulles Airport to Boise. For your return ticket, we recommend flying on a Friday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Dulles Intl Airport to Boise, 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 Boise is January, where tickets cost $415 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $725 and $690 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Boise, you should book around 5 days before departure. For the absolute cheapest price, our data suggests you should book 20 days before departure.

Which airlines provide the cheapest flights from Washington Dulles Airport to Boise?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Washington Dulles Airport to Boise found on KAYAK was with United Airlines for $194. Sun Country Air proposed a round-trip connection from $299 and Delta from $388.

Good to know

Low season

January

High season

July

Cheapest flight

$178
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 19% increase in price.
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 $178 for a one-way ticket and $299 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?

    Star Alliance, oneworld, 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 $511 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 $672 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.

See more FAQs

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 9134 reviews
7.9Comfort
8.6Crew
7.3Entertainment
8.2Boarding
7.3Food
Airline reviews

Boarded the plain and had to wait 1 hour for crew Captain to arrive from another flight

4.0 OkayRandy, May 2024SFO - SEA
Read more about Alaska Airlines reviews

Boarded the plain and had to wait 1 hour for crew Captain to arrive from another flight

It was fine since it ensure we went to our destination in time.

Overall good flight, smooth and on time and comfortable. Disappointing that food is not served and you can't purchase the snack packs on the plane.

The space for legs in coach is better than other Airlines you can even cross your legs!!

There was a row with three women who were very loud - talking and laughing. In an open, outdoor setting that's fine. On an airplane, no. The flight attendants told the women they were the fun row. It took the woman sitting in the row ahead of the loud women to tell them they were too loud, but everyone in the general vicinity was irritated. I didn't think it would be possible to be so rowdy for so long. Then when we landed we weren't let off at a gate. We had to be bussed in and the bus contended with airline traffic. After dealing with the loud passengers, this was not what I was expecting. An incredibly disappointing experience with an airline that I have always regarded as one of the better ones.

I bought the cheapest ticket. No meal, no checked luggage so I didn't expect much and was surprised by how good the flight and service was. Alaska is now my favorite airline.

Comfortable seat, plenty of leg room which is so rare, overhead bin comfortably accommodated my carry-on bag. Deli box was tasty, service was good, bathrooms were clean. Uneventful flight, which I appreciate. Departed on time and landed early.

No entertainment, food was cookies & juice,water, soda or coffee.

My baggage was in another flight, anit was delayed for one hour.

The maintenance delay was seemingly handled very poorly... Little to no information was provided to the passengers sitting on board for an extended period of time. On a brighter note, at least the cabin crew (flight attendants) did the best they could. They seemingly were provided very little information with regards to the delay. Unless absolutely beyond my control, I can’t imagine buying a ticket on Alaska airlines again, based on this and a previous experience my wife recently had, along with complaints overheard from other passengers.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

they made me check my carryon. There was space in the overhead bins.

The plane was delayed 2 hours. The wifi did not work. The seat in first class was not comfortable because the bottom felt like it lost all of its padding. And I did not like when the flight attendant made me wait at my seat to use the bathroom and didn't tell me why. If there were too many people using the 1st Class bathroom, she should have told me to go in the back, coach bathrooms. I guess I have to feel fortunate that they found 2 local pilots to still fly the plane tonight after the original pilots ended up at an airport 60 miles away due to high winds.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Just a crappy airline. The same every time. You feel you are a cow on a farm. You are being being whipped and pulled.

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

My interaction with the flight attendent Eve was horrible. I was seated in 3F and was blown away watching her repeatedly skip me as she took other customer orders for lunch...she took the customer next to me but skipped me, then took everyone's order around me (in front of and behind me) . After she had taken every customer's orders to include those behind me, she came to me and said we are out of everything except one last item. I was mortified, in that, I am a 1k flyer, had pre-ordered AND as an African American could only assume why she repeatedly skipped me...mortified. no words

The Flight was good, pilot seemed very skillful. My wheel chair sister who could barely walk was allotted the second last seat in the aircraft, with great difficulty she managed to reach on her seat, as she required attendance we were given separate seat, even on request no one cared, so much so there were single passengers who were given twin seats. May not be taken as complaint but a reminder to the checkin staff to keep in mind in future the allottment of wheel chair passengers seats.

Almost 2 hour delay in boarding with all standing ready to board at original time. No explanation given.

787-9 Transcon from IAD-LAX FYI no meals in premium plus, not considered Premium - seats are wonderful https://www.united.com/ual/en/us/fly/travel/inflight/premium-services.html Horrible handling of delayed flight

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

Delayed abs delayed Gate crew giving poor info - we are definitely leaving at —- Ultimately to cancel flight after 4+ hours of delays Just cancel it earlier

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Everything was on time; the flight attendants and the gate personnel were very pleasant and helpful.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Perfect flight. On time departure and early arrival. Smooth flight.

Awful! The flight was delayed and we sat on the plane in DCA for an hour because fuel was out in the wrong part of the plane and would not be accessible during flight. So the plane had to be refueled in correct tank. They also allowed someone to get off of the plane. This delayed my six hour flight by an hour and made me miss my connecting flight. I ran to new gate and American Airlines agents new about the delay and even knew that I was trying to make the connection. They knew thru communication with my friend while in flight that I was in the airport and running to the new gate and they still closed the gate and refused to let me on the new flight despite plane still being at the gate. It was horrible and I had to be rebooked on a flight for 24 hours later. This has been a nightmare and if American Airlines can cause customers to be delayed and then have zero empathy as having an on time flight was more important to them than helping a customer who was delayed by no fault of her own, then it's seems that it's not a company that I want to continue to give my loyalty to. I'm so disgusted.

Help was available but timing was bad in my case

It was a horrible snow storm, but updates were inconsistent and the app never displayed a remotely accurate time or gate until very close to boarding.

Book cheap flights from Washington, D.C. to Boise

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Boise found on KAYAK in the last 72 hours.
5/18Sat
3 stops
24h 25mIAD-BOI
$178
6/1Sat
1 stopUnited Airlines
9h 02mIAD-BOI
$194
6/1Sat
2 stopsAlaska Airlines
15h 24mIAD-BOI
$201
5/26Sun
1 stopAlaska Airlines
17h 01mIAD-BOI
$202
6/3Mon
1 stopAmerican Airlines
7h 55mIAD-BOI
$214
6/5Wed
2 stopsAlaska Airlines
14h 45mIAD-BOI
$216
7/22Mon
3 stops
29h 14mIAD-BOI
$245
7/22Mon
2 stopsAmerican Airlines
13h 35mIAD-BOI
$249
5/18Sat
1 stopDelta
7h 07mIAD-BOI
$279
8/2Fri
1 stopDelta
9h 16mIAD-BOI
$309

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Last minute flights from Dulles Intl to Boise

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Boise that are departing in the next 10 days.
5/9Thu
multi-stop
22h 39mIAD-BOI
5/18Sat
multi-stop
45h 16mBOI-IAD
$435
5/9Thu
multi-stop
27h 39mIAD-BOI
5/18Sat
multi-stop
36h 26mBOI-IAD
$500
5/8Wed
multi-stopAmerican Airlines
18h 51mIAD-BOI
5/13Mon
multi-stopAmerican Airlines
18h 29mBOI-IAD
$712
5/10Fri
multi-stopDelta
7h 46mIAD-BOI
5/14Tue
multi-stopDelta
6h 19mBOI-IAD
$742
5/8Wed
multi-stopAmerican Airlines
18h 51mIAD-BOI
5/15Wed
multi-stopAmerican Airlines
16h 01mBOI-IAD
$745
5/10Fri
multi-stopDelta
7h 46mIAD-BOI
5/14Tue
multi-stopDelta
10h 55mBOI-IAD
$747
5/8Wed
multi-stopAlaska Airlines
8h 25mIAD-BOI
5/18Sat
multi-stopAlaska Airlines
8h 59mBOI-IAD
$767
5/8Wed
multi-stopUnited Airlines
15h 59mIAD-BOI
5/13Mon
multi-stopUnited Airlines
28h 34mBOI-IAD
$856
5/8Wed
multi-stopAlaska Airlines
8h 25mIAD-BOI
5/13Mon
multi-stopAlaska Airlines
10h 15mBOI-IAD
$859
5/8Wed
multi-stopUnited Airlines
7h 20mIAD-BOI
5/13Mon
multi-stopUnited Airlines
22h 21mBOI-IAD
$891

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Washington Dulles Airport - Boise Flights

Departure:

Washington Dulles Airport (IAD)United States

Destination:

Boise (BOI)United States

Return flight deals:

Boise - Washington Dulles Airport

Cabin classes:

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