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Find cheap flights from Boise to Washington from $40

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Washington departing on 9/10. 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
Thu 7/11
Thu 7/18

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Best Washington Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Seattle
Seattle1 stop$97
Spokane
Spokanenonstop$167
Pasco
Pasco2 stops$267
Bellingham
Bellingham1 stop$264
Pullman
Pullman1 stop$236
Portland
Portland1 stop$113

Good to know

Low season

January

High season

August

Cheapest flight

$40
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Boise to Seattle

FAQs - booking Washington flights

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

    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 Boise to Washington.

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

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

    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 Washington with an airline and back to Boise with another airline.

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

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

See more FAQs

Top tips for finding cheap flights to Washington

  • Looking for a cheap flight? 25% of our users found tickets from Boise to the following destinations at these prices or less: Spokane $101 one-way - $196 round-trip; Portland $148 one-way - $241 round-trip; Seattle $174 one-way - $357 round-trip
  • Morning departure is around 52% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Boise to Washington

Need help choosing which airline to fly with from Boise to Washington? 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.
8.2
Singapore AirlinesOverall score based on 1417 reviews
8.1Comfort
7.8Food
8.7Crew
8.4Boarding
8.2Entertainment
Airline reviews

Leg room and flight sound insulation is very bad. They broke 3 of my bags with bad handling

8.0 ExcellentAnonymous, Jun 2024SFO - SIN
Read more about Singapore Airlines reviews

Leg room and flight sound insulation is very bad. They broke 3 of my bags with bad handling

Crews were great but food not much selection just all tailored for Asian passengers.

I had a great experience with Singapore airlines as always. The partner airline, Scoot was fine except my bag was misplaced during the shuffle. Ultimately, my baggage arrived intact. Attempting to inquire about my baggage was impossible.

plus: service and personal assistance minus: online check-in did not work

The Premium economy class is not the same as some other airlines because there are no economy seats on these planes. Basically you’re getting an economy seat that’s a little wider. The seats are not that much more comfortable. The service and food experience is similar to economy class on other Asian airlines. There aren’t enough toilets for the entire plane therefore we are forced to share the business class toilets that are closed off with curtains.

My overall experience with Singapore Airlines is great. Will definitely fly Singapore airline again.

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

It was a great flight Food was great Crew was spectacular

In general good, but the machine seems to be long in operation and some functions were restricted as e. g. Adjusting of seats.

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Delta is one of the best airlines I have flown

Flight delayed about 2 hrs so it made it a VERY late night

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

The entertainment wasn’t playing in the app or online.

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

Original plane sidelined. Had to wait an hour for replacement.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Paid for premium economy had no tv the whole time the crew tried to reset/reboot but would not work they said they would put a trouble ticket in for it. We had 3 seats my tv was the only one that didn't work. They cancelled our flight re worked us on another that left us at airport over night on the floor I have a ten year old and a 78 diabetic mother which also had shingles and suffers from nerve pain in legs and back. Requested wheelchair service at all airports after the re route NO wheelchair service was there to help. WORST experience we have ever had. Went to American airlines assistance it was closed. I AM FURIOUS!!! I expect some sort of compensation from this traumatic experience and no need for flying points we don't plan on using American airlines again!!!!

This is by far the worst experience I have had with American Airlines. The start of this trip was a complete disaster. I purposely planned my trip so that I would weather any delays so that I could make very important meeting at the Pentagon. My flight was cancelled because of maintenance and I was put on the first flight the next day but I was late to the meeting. After a long week at the Pentagon I just wanted to go home and my flight home which was early in the day was delayed. Eventually the flight was delayed until the next day. I was not authorized a hotel room because DCA was my point of origin. So I paid for a hotel out of pocket. The flight this morning was boarded then deplaned because the aircraft was hot. The flow of information was not happening in DCA and made it worse when the news was bad. I am going to take a break from American for my next few military flights. Hopefully whatever has been going on with American Airlines will be resolved.

We had a 2 hour delay. The seats were smaller than most other airlines. The person in front of us wanted to lay back and we had to stop her because she was pressing against my girlfriend’s legs. We had to ask her to sit up and not lay back due to the lack of room.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Terrible. I didn’t fly and I had an important meeting the next day.

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

My flight was uncomfortable and crammed. There were no pockets to store things, I couldn’t move my seat back slightly. Beverages including soda cost extra. My husband flew on another spirit airline flight, which was delayed a total of 48 hours, only to be canceled.

Two delays in less than 24hrs. They need to improve everything and restructure the whole company.

Terrible leg room, seats don’t recline, delayed flight, and even water isn’t free onboard

Flight was canceled less than 6 hours before takeoff, rebooked on a flight that was twice as long and left earlier so we couldn’t make it, when using text support option took over 2 hours to speak with someone.

Not enough help at airport during boarding process. Flight was delayed. Overall WORST flying experience I’ve ever had. Will NEVER FLT SPIRIT AGAIN

Terrible legroom, seats do not recline, tray table the size of an iPhone, delayed flight, have to pay 5$ to get a cup of water onboard.

Could have TV/Movie and some water ou soda free

Flight was good and clean but delayed over an hour on the return flight.

The non stop flight and able to go into Atlantic City airport. They could lower the prices. It starts out low but then if you want to bring luggage and pick your seat the price goes up quite a bit.

Flight got diwngraded last minute and left us stranded. I was told I’ll be given credit for my luggage and seat upgrades but haven’t got anything yet

Book cheap flights from Boise to Washington

Recent round-trip flight deals

9/11Wed
1 stopSpirit Airlines
6h 17mBOI-SEA
9/16Mon
1 stopSpirit Airlines
12h 32mSEA-BOI
$97
9/11Wed
1 stopSpirit Airlines
6h 17mBOI-SEA
9/16Mon
1 stopSpirit Airlines
12h 32mSEA-BOI
$98
8/21Wed
1 stop
13h 23mBOI-PDX
8/25Sun
nonstop
1h 13mPDX-BOI
$123
9/11Wed
nonstop
1h 32mBOI-SEA
9/16Mon
1 stop
12h 32mSEA-BOI
$126
8/21Wed
nonstopDelta
1h 37mBOI-SEA
8/27Tue
nonstopDelta
1h 32mSEA-BOI
$137
8/21Wed
nonstopDelta
1h 37mBOI-SEA
8/24Sat
nonstopDelta
1h 34mSEA-BOI
$147
11/5Tue
2 stopsUnited Airlines
10h 15mBOI-PDX
11/9Sat
1 stopUnited Airlines
4h 41mPDX-BOI
$381
9/11Wed
1 stopUnited Airlines
6h 45mBOI-SEA
9/16Mon
2 stopsUnited Airlines
20h 20mSEA-BOI
$385
8/21Wed
2 stopsAmerican Airlines
15h 09mBOI-PDX
8/25Sun
2 stopsAmerican Airlines
15h 39mPDX-BOI
$1,153
7/16Tue
1 stopAmerican Airlines
20h 51mBOI-GEG
7/24Wed
1 stopAmerican Airlines
7h 23mGEG-BOI
$1,291

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Recent one-way flight deals

9/10Tue
1 stopSpirit Airlines
9h 30mBOI-SEA
$40
6/19Wed
1 stopSpirit Airlines
9h 05mBOI-PDX
$49
9/10Tue
nonstopAlaska Airlines
1h 32mBOI-SEA
$69
8/17Sat
nonstopDelta
1h 44mBOI-SEA
$79
8/17Sat
1 stopAlaska Airlines
6h 12mBOI-SEA
$88
7/13Sat
nonstopDelta
1h 37mBOI-SEA
$89
8/9Fri
3 stopsUnited Airlines
28h 30mBOI-SEA
$290
7/15Mon
2 stopsAmerican Airlines
19h 57mBOI-SEA
$298
7/13Sat
2 stopsAmerican Airlines
19h 57mBOI-SEA
$299
6/24Mon
3 stopsUnited Airlines
28h 08mBOI-SEA
$319

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Last minute flights from Boise to Washington

Last minute flight, train and bus deals

6/16Sun
multi-stop
12h 19mBOI-SEA
6/23Sun
nonstop
1h 25mSEA-BOI
$225
6/16Sun
multi-stopSpirit Airlines
12h 19mBOI-SEA
6/23Sun
multi-stopSpirit Airlines
8h 01mSEA-BOI
$231
6/16Sun
nonstopDelta
1h 31mBOI-SEA
6/23Sun
nonstopDelta
1h 25mSEA-BOI
$347
6/14Fri
nonstopAlaska Airlines
1h 18mBOI-PDX
6/23Sun
nonstopAlaska Airlines
1h 11mPDX-BOI
$382
6/15Sat
nonstopAlaska Airlines
1h 31mBOI-SEA
6/22Sat
nonstopAlaska Airlines
1h 25mSEA-BOI
$432
6/13Thu
multi-stopUnited Airlines
6h 01mBOI-PDX
6/15Sat
multi-stopUnited Airlines
5h 08mPDX-BOI
$484
6/15Sat
multi-stopUnited Airlines
6h 02mBOI-SEA
6/15Sat
multi-stopUnited Airlines
6h 02mSEA-BOI
$521
6/12Wed
multi-stopDelta
3h 43mBOI-GEG
6/16Sun
multi-stopDelta
3h 50mGEG-BOI
$556
6/15Sat
multi-stopAmerican Airlines
13h 43mBOI-SEA
6/15Sat
multi-stopAmerican Airlines
14h 51mSEA-BOI
$1,060
6/14Fri
multi-stopAmerican Airlines
25h 45mBOI-SEA
6/16Sun
multi-stopAmerican Airlines
28h 25mSEA-BOI
$1,080

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Boise - Washington Flights

Departure:

Boise (BOI)United States

Return flight deals:

Washington - Boise

Cabin classes:

$288
$446
$321
$98