IAD - BOI

$124 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 11/5. 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
1 adult, Economy

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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Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Boise

Thu, Nov 6 - Wed, Nov 12
Alaska Airlines Logo
7:43 am - 4:17 pmIAD-BOI
10h 34m1 stop
Alaska Airlines Logo
6:05 pm - 6:23 amBOI-IAD
10h 18m1 stop
$290Alaska Airlines
Find Deal
Wed, Oct 15 - Mon, Oct 20
Hawaiian Airlines Logo
8:53 am - 3:45 pmIAD-BOI
8h 52m1 stop
Hawaiian Airlines Logo
8:26 pm - 7:33 amBOI-IAD
9h 07m1 stop
$308Hawaiian Airlines
Find Deal
Wed, Oct 15 - Mon, Oct 20
Delta Logo
7:35 am - 4:06 pmIAD-BOI
10h 31m1 stop
Delta Logo
7:45 pm - 11:26 amBOI-IAD
13h 41m2 stops
$314Delta
Find Deal
Thu, Nov 6 - Wed, Nov 12
Southwest Logo
5:05 am - 10:00 amIAD-BOI
6h 55m1 stop
Southwest Logo
6:10 am - 10:10 pmBOI-IAD
14h 00m2 stops
$320Southwest
Find Deal
Thu, Dec 4 - Sat, Jan 10
American Airlines Logo
6:00 am - 12:34 pmIAD-BOI
8h 34m1 stop
American Airlines Logo
7:32 am - 4:07 pmBOI-IAD
6h 35m1 stop
$321American Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
Delta Logo
7:35 am - 4:07 pmIAD-BOI
10h 32m1 stop
Delta Logo
2:00 pm - 12:40 amBOI-IAD
8h 40m1 stop
$337Delta
Find Deal
Sat, Oct 18 - Thu, Oct 23
United Airlines Logo
1:20 pm - 6:47 pmIAD-BOI
7h 27m1 stop
United Airlines Logo
2:12 pm - 12:33 amBOI-IAD
8h 21m1 stop
$358United Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 2
United Airlines Logo
6:30 am - 11:39 amIAD-BOI
7h 09m1 stop
United Airlines Logo
2:40 pm - 12:56 amBOI-IAD
8h 16m1 stop
$391United Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
Southwest Logo
7:40 am - 6:45 pmIAD-BOI
13h 05m2 stops
Southwest Logo
5:00 am - 1:10 pmBOI-IAD
6h 10m1 stop
$393Southwest
Find Deal
Thu, Dec 4 - Sat, Jan 10
American Airlines Logo
2:06 pm - 10:03 pmIAD-BOI
9h 57m2 stops
American Airlines Logo
1:43 pm - 10:18 pmBOI-IAD
6h 35m1 stop
$395American Airlines
Find Deal

Everything you should know

Top airlines
Alaska Airlines
Cheapest • from $290 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$290
Alaska Airlines
Thu 11/6Wed 11/12
IAD - BOI • 1 stop
Cheapest one-way
$124
Typical prices: $300-408
Frontier
Wed 11/5
IAD - BOI • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boise!
Booking Insights

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.

Good to know

Low seasonMay
Cheapest flight$124
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 8% 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 $124 for a one-way ticket and $290 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, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Boise are Southwest and Alaska Airlines. With an average price for the route of $537 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $527 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.

Reviews of the 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 10000 reviews
7.1Entertainment
8.5Crew
7.8Comfort
7.1Food
8.1Boarding
Airline reviews

Awesome. Great flight. Super nice people and I like the extra space

10.0 ExcellentAnonymous, Sep 2025DCA - SAN
Read more Alaska Airlines reviews

Awesome. Great flight. Super nice people and I like the extra space

On time, WiFi worked, reasonable legroom, helpful staff. Unfortunately there was no water for handwashing in the rear lavatory.

My husband unfortunately had a very large lady next to him who did not fit in the seat and had to have the armrest up so she was partially in his seat and she also had horrible BO

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.

They were friendly, efficient and got our bags to us so fast at the end of the flight.

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!

It was too cold for the first quarter of the flight.

I loved that we boarded orderly and quickly, that I had an opportunity to check my bag free at the gate, that there was plenty of seat/leg room, there was smooth takeoff and landing, the attendants were pleasant and helpful, and that we arrived on time!!

In GEG I arrived at 0930 for a 1600 flight. Alaska had a rule that you could not check your bags until 4 hours before flight time. I was forced to sit in a chilly lobby for hours. I had access to a bathroom, but could not go into terminal for food and drink. Boarding and flight OK

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

Terrible. They wouldn't allow me on my flight on the 14th..

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

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.

Everything you need to know for your flight from Dulles Intl to Boise

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