WAS - BOI

$120 Find Cheap Flights from Washington, D.C. to Boise - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Boise departing on 8/18. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$274
Typical prices: $221-$581
Alaska Airlines, Frontier
Wed 8/26Sun 8/30
DCA - BOI • 1 stop
Cheapest one-way
$120
Typical prices: $121-$229
Frontier
Tue 8/18
DCA - BOI • 1 stop
Top airlines
Cheapest • from $293 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Boise. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $205 (round-trip)
Shortest trip • 7h 04m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Boise (WAS-BOI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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 Washington, D.C. to Boise

Wed, Aug 26 - Sun, Aug 30
Multiple Airlines Logo
8:00 am - 3:31 pm
DCA
-
BOI
9h 31m
1 stop
Multiple Airlines Logo
12:24 pm - 9:59 pm
BOI
-
DCA
7h 35m
1 stop
$274Multiple Airlines
Thu, Oct 29 - Tue, Nov 3
Southwest Logo
6:15 am - 10:45 am
BWI
-
BOI
6h 30m
1 stop
Southwest Logo
11:30 am - 10:45 pm
BOI
-
BWI
9h 15m
1 stop
$293Southwest
Wed, Sep 23 - Tue, Sep 29
United Airlines Logo
6:05 am - 11:26 am
BWI
-
BOI
7h 21m
1 stop
United Airlines Logo
10:30 am - 7:40 pm
BOI
-
BWI
7h 10m
1 stop
$293United Airlines
Wed, Sep 16 - Wed, Sep 16
United Airlines Logo
6:15 am - 11:26 am
IAD
-
BOI
7h 11m
1 stop
United Airlines Logo
7:05 pm - 7:35 am
BOI
-
IAD
10h 30m
1 stop
$298United Airlines
Thu, Oct 29 - Tue, Nov 3
Southwest Logo
7:55 am - 3:10 pm
BWI
-
BOI
9h 15m
1 stop
Southwest Logo
6:15 am - 6:05 pm
BOI
-
BWI
9h 50m
2 stops
$298Southwest
Wed, Oct 21 - Thu, Oct 22
Delta Logo
7:21 pm - 11:59 pm
BWI
-
BOI
6h 38m
1 stop
Delta Logo
6:50 pm - 5:45 am
BOI
-
BWI
8h 55m
1 stop
$303Delta
Wed, Oct 21 - Mon, Oct 26
Delta Logo
7:21 pm - 11:59 pm
BWI
-
BOI
6h 38m
1 stop
Delta Logo
3:00 pm - 11:23 pm
BOI
-
BWI
6h 23m
1 stop
$303Delta
Thu, Sep 17 - Tue, Sep 22
Alaska Airlines Logo
7:15 pm - 9:56 am
BWI
-
BOI
16h 41m
1 stop
Alaska Airlines Logo
1:15 pm - 6:30 am
BOI
-
BWI
15h 15m
1 stop
$303Alaska Airlines
Thu, Sep 17 - Tue, Sep 22
Alaska Airlines Logo
7:15 pm - 9:56 am
BWI
-
BOI
16h 41m
1 stop
Alaska Airlines Logo
4:20 pm - 6:30 am
BOI
-
BWI
12h 10m
1 stop
$303Alaska Airlines
Thu, Oct 1 - Thu, Oct 8
Frontier Logo
7:00 am - 12:04 pm
DCA
-
BOI
7h 04m
1 stop
Frontier Logo
12:23 pm - 9:58 pm
BOI
-
DCA
7h 35m
1 stop
$311Frontier
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Boise flights

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

How much is a round-trip flight from Washington, D.C. to Boise?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Boise departing in August.

Flight prices are below average for this route right now.

Flights to Boise from Washington, D.C. usually cost between $297 and $465 in August.
The lowest price found in the past 5 days was $274 on Multiple Airlines (Aug 26-Aug 30).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. 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. to Boise is May, where tickets cost $372 (return) on average. On the other hand, the most expensive months are March and February, where the average cost of round-trip tickets is $630 and $576 respectively.

Good to know

Low season

January

Cheapest flight

$120
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Reagan Washington National Airport to Boise

When to book flights from Washington, D.C. to Boise

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to Boise

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

    In the last 5 days, the lowest price for a flight from Washington, D.C. to Boise was $120 for a one-way ticket and $274 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Boise?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Washington, D.C. to Boise?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in Boise. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Boise Air Term. Gowen Fld.

  • Which aircraft models fly most regularly from Washington, D.C. to Boise?

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

  • Which airline alliances offer flights from Washington, D.C. to Boise?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington, D.C. 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 $444 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 $468 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to Boise.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise from Washington, D.C. 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, D.C. 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, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Washington, D.C. 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 Washington, D.C. 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
SouthwestOverall score based on 4228 reviews
8.6Crew
7.5Entertainment
7.0Food
8.0Comfort
8.1Boarding
Airline reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

8.0 ExcellentSean, Jul 2026
HOU - LGB
Read more Southwest reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

Friendly crew kept coming by to make sure all was ok, provide additional refreshments, etc.

It was good. Last flight was delayed but I always say that is in God's plan

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

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!

The seats are too small/crowded. It is frustrating to be forced to sit with someone who is overweight as they crown the other seat. Nothing against the person…just the airline companies who continue(over decades!)to reduce seat sizes. Americans are fat. Those of us who are not are tired of being compromised by the airline companies who don’t faces that fact and make adjustments. Maybe have “overweight seats”? Maybe give us a discount for being forced into an uncomfortable flight due to others overweightness? Please, make adjustments…be accountable. Thanks!

No outlets, plugs, way to charge the phone or service and no food on one leg o the trip, but other than that, great. Loved WIFI, the flight, the crew, the pilots, the schedule, etc. Great job. My new favorite airline!

Wonderful as always! Pleasant staff, smooth ride, and timely departure.

Flight was scheduled to leave at 6a and delayed for 5 hours due to “mechanical” issues. Everyone else on the flight received an email voucher for $24 of food for the delay, except for our group. Also the carry on luggage bins were full and the crew requested that everyone to pass their carry ons back up to the front while everyone was still standing. They gave no other direction and kept rushing the process. After all bags were sent up, they then asked for seat #s to go with each bag… They should have probably had everyone get to their sits and then pass the bags up in a controlled process.

From Las Vegas to Boise all went well. However, our flight was delayed in Boise and I missed my connecting flight from Seattle to Pasco. Moreover, the last flight to Pasco was full and I was booked on the 11:30 flight Sunday and given a hotel accommodation. However, I was scheduled to deliver the Sunday morning service at my church and needed to arrive no later than 10:00. Therefore, I booked a Delta flight scheduled to arrive in Pasco at 23:09. My piece of luggage checked in Las Vegas arrived in Pasco earlier today. I waited at the airport for over an hour last night to speak with an Alaska agent to no avail. I went back after church this morning in search of my piece of luggage and it could not be located. After waiting for 40 minutes to speak to the agent authorized to take my claim, he announced that he was closing the counter to assist on the flight line but not before providing me with a telephone number that would help me with filing my claim. Before I was able to make the call (due to other factors) I received a call from Alaska agent informing me that my luggage had just arrived and I am now waiting for it to be delivered. I deliberately took the more complicated route home to ensure that I would be home in plenty of time to prepare for myself for the Sunday service and accommodate my relatives’ needs. I believe the airport is undermanned given the number of flights coming in and going out. It was fiasco last night with three flights waiting for luggage and another flight landing within minutes. Today’s problems stemmed from a lack of cross training and a serious amount of cargo/baggage going out and too few people scheduled to cover.

The seats were not very comfortable and there were no TV screens. Boarding was pretty fast because there were so few people on such a small plane and I appreciated that they still gave us our snack and drinks, however I really wish they would come up with a good gluten-free snack.

Flight crew and flight were good. But it departed two hours late.

Pretzels are always a disappointment. Cheezits, Sun Chips, trail mix, anything else would be nice.

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

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 missed the flight because the Minneapolis flight was 49 minutes LATE, and the Boise flight LEFT 24 minutes EARLY!

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.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

Having to up charge for a seat assignment is not good. Delta can do better

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.

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.

715PM departure was 2.5 hours late. Received hotel & food voucher but after we already booked a room. Entire team just seemed like they were 2-3 steps behind in execution, and notifcations.

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.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Patrons with larger bags were asked to check the bags when boarding. Seems like the most effective, and least costly way, way to successfully use the cramped space.

They cancelled our flight two times after rebooking us for a later flight. We never got on the plane. We found another solution by driving.

Mostly great. Only issue was with the WiFi. Halfway through the flight it was spotty and I was unable to work as I planned. This impacted my work products as I am traveling for business and it was an unexpected hindrance which was inconvenient. Flight here was amazing. For a 5 hour flight something more than a Biscoff would be nice but I’m just swinging at windmills I guess…

Delayed boarding because a flight attendant couldn't find the gate...sat on the plane for over an hour at the gate because AA couldn't get one of the planes behind us to move

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

Overall a good experience, however Wifi was not working on the flight.

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

Everything you need to know for your flight from Washington, D.C. to Boise

Information on your arrival and departure airports