$84 Find Cheap Flights from Boise to Washington - 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 Boise to Washington departing on 8/4. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Washington

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Washington, 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 Boise to Washington, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Boise to Washington

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seattle
Seattle1 stop$197
Spokane
Spokanenonstop$227
Pasco
Pasco1 stop$395
Bellingham
Bellingham1 stop$403
Pullman
Pullmannonstop$267
Seattle
Seattle1 stop$197
Spokane
Spokanenonstop$227
Pasco
Pasco1 stop$395
Bellingham
Bellingham1 stop$403
Pullman
Pullmannonstop$267

Book Cheap Boise to Washington Plane Tickets

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

Tue, Sep 22 - Wed, Sep 23
Alaska Airlines Logo
6:49 pm - 10:25 am
BOI
-
SEA
16h 36m
1 stop
Alaska Airlines Logo
1:03 pm - 3:30 pm
SEA
-
BOI
1h 27mnonstop
$197Alaska Airlines
Mon, Oct 19 - Tue, Oct 20
Alaska Airlines Logo
8:57 am - 8:16 am
BOI
-
SEA
24h 19m
1 stop
Alaska Airlines Logo
11:33 am - 2:11 pm
SEA
-
BOI
1h 38mnonstop
$201Alaska Airlines
Sat, Aug 29 - Mon, Aug 31
Delta Logo
6:49 am - 7:35 am
BOI
-
SEA
1h 46mnonstop
Delta Logo
9:03 am - 11:43 am
SEA
-
BOI
1h 40mnonstop
$207Delta
Fri, Sep 18 - Mon, Sep 28
Delta Logo
10:35 am - 11:27 am
BOI
-
SEA
1h 52mnonstop
Delta Logo
7:15 am - 9:54 am
SEA
-
BOI
1h 39mnonstop
$217Delta
Tue, Oct 13 - Tue, Oct 13
Alaska Airlines Logo
6:40 am - 7:20 am
BOI
-
SEA
1h 40mnonstop
Alaska Airlines Logo
10:48 am - 8:29 pm
SEA
-
BOI
8h 41m
1 stop
$221Alaska Airlines
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
11:30 am - 7:10 pm
BOI
-
SEA
8h 40m
1 stop
Southwest Logo
7:40 am - 3:00 pm
SEA
-
BOI
6h 20m
1 stop
$222Southwest
Fri, Aug 7 - Sat, Aug 8
Alaska Airlines Logo
10:52 am - 9:13 am
BOI
-
SEA
23h 21m
1 stop
Alaska Airlines Logo
12:55 pm - 3:26 pm
SEA
-
BOI
1h 31mnonstop
$223Alaska Airlines
Sat, Sep 19 - Mon, Sep 28
Southwest Logo
4:00 pm - 8:30 pm
BOI
-
SEA
5h 30m
1 stop
Southwest Logo
9:20 am - 7:10 pm
SEA
-
BOI
8h 50m
1 stop
$232Southwest
Tue, Sep 15 - Mon, Sep 21
Southwest Logo
2:20 pm - 7:50 pm
BOI
-
PDX
6h 30m
2 stops
Southwest Logo
5:15 pm - 10:50 pm
PDX
-
BOI
4h 35m
1 stop
$232Southwest
Fri, Jul 10 - Mon, Jul 13
Delta Logo
7:28 pm - 11:55 pm
BOI
-
GEG
5h 27m
1 stop
Delta Logo
5:37 pm - 10:18 pm
GEG
-
BOI
3h 41m
1 stop
$247Delta
Booking Insights

KAYAK's insights & trends for Boise to Washington flights

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

How much is a round-trip flight from Boise to State of Washington?

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

What is the cheapest Boise to Washington flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Washington from Boise found in the last 5 days was to Spokane, at $227 round-trip. The most popular route is from Boise (BOI) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 5 days was $249.

What is the cheapest time of day to fly to Washington?

The average price for all round-trip flights from Boise to Washington depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Washington is generally in the evening, when round-trip flights cost $446 on average. Morning departures are around 13% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the morning, which is peak travel time and where the average cost of a ticket is $504.

Can I save money by flying with a layover from Boise to Washington?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $338, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Boise to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Washington, 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 Boise to Washington is March, when tickets cost $59 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $193 and $118 respectively.

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

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

If you are looking for a flight deal from Boise to Washington, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Washington, Saturday is the cheapest day to fly and Sunday is the most expensive.

How far in advance should I book a flight from Boise to Washington?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to Washington, 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 Boise to Washington, you should book around 4 weeks before departure, which saves you about 67% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$84
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 30% increase in price.
Flight from Boise to Spokane

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

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 $143 one-way - $227 round-trip; Portland $198 one-way - $337 round-trip; Seattle $227 one-way - $352 round-trip

Reviews of the top 3 airlines serving from Boise to Washington

 
See real verified KAYAK customer reviews for airlines flying from Boise to Washington. 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 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.
7.9
Alaska AirlinesOverall score based on 12522 reviews
7.0Entertainment
8.1Boarding
7.8Comfort
8.5Crew
7.1Food
Airline reviews

Never had so many staff members be rude and disrespectful. I had a staff member sarcastically call me “girly” after making me wait 20 minutes to be seen by her. I was able to print my luggage tag and she told me I was too late to check luggage I said the system obviously disagrees. And you had me wait way too long while you asked every single passenger ahead of me about their Disney vacations. She wasted so much time to then say “girly your bag won’t make it on the plane” I’m not her girly I’m a full grown adult. She needs to learn a hell of a lot of respect

2.0 MediocreBridget, Jun 2026
SNA - SEA
Read more Alaska Airlines reviews

Never had so many staff members be rude and disrespectful. I had a staff member sarcastically call me “girly” after making me wait 20 minutes to be seen by her. I was able to print my luggage tag and she told me I was too late to check luggage I said the system obviously disagrees. And you had me wait way too long while you asked every single passenger ahead of me about their Disney vacations. She wasted so much time to then say “girly your bag won’t make it on the plane” I’m not her girly I’m a full grown adult. She needs to learn a hell of a lot of respect

The agents were super helpful. I was traveling with my mother inlaw who needed whell chair assisstance. The help and accomodation from the checkin crew, to the boarding crew and inflight crew was excellent.

Completely full flight. Boarding was smooth, but people didn’t listen about use of overhead bins which is typical. We pre-purchased a snack which was tasty. Drinks were good and plentiful. Flight left late because previous flight was delayed.

Flying into PAE was so easy because it’s baggage claim is quick and accesible. I had a car rental and the counter is inside the baggage claim area, very convenient.

Eva Airlines attendants were wonderful. I really enjoyed the hot meals. They always greeted me with a warm smile. I'm looking forward to flying back to the USA with them again!

Flight maintenance was on so that flight didn’t go able to fly out to Seattle and Inhad to get another flight,,

3 of the 4 legs of our trip the crews were awesome! 1 leg the trip attendants were rude & dismissive, didn't even greet us when boarding even though both myself & my husband said hello directly to them when we boarded.

Well organized boarding. Cabin crew were efficient and professional. Thoroughly enjoyed the flight.

The first flight was fine, great crew, but the plane was delayed 45 minutes to go to Seattle because of they were missing a ramp. That would make sense if the plane was actually at the gate. Not if we’re still waiting for a plane. After we landed we waited 30-45 minutes on the tarmac just to get off the plane. Alaska made me miss my connecting flight, wasting my time, and my money. I should honestly be reimbursed, but hey, when does the airline ever actually take accountability? Never.

Everyone from the ticket counter to the stewards were so accommodating and helpful

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Flight delayed two hours , missed connection flight then connection cancelled- horrible experience with hotel

Omg the disaster at the security was on another level! “Go to this end, sorry closed now, go to that end”. Ridiculous! This took over an hour! As far as the airline was concerned although I booked nearly a year ago I couldn’t get my bag tag - stand in another 15 minute line or my seat on Hawaiian Airlines- 5 more minutes! Then my TSA status was denied. Like what the heck! Makes a person not want to travel with this amount of incompetence

The Honolulu Hub needs 2 to 3 times the amount of things to do as well as shuttles that transport to/from gates and terminals. Arriving from OCONUS locations; transferring to CONUS locations its a miserable experience. Fetching and re-checking bags, then returning to a gate across the airport take longer than any other large airport. If youre confused by what I mean, the process goes like this: Disembark plane Walk a mile to the main terminal Walk half a mile to baggage claim Wait 40 minutes for baggage Walk a mile to re-check-in baggage Wait 20 minutes for checking in those bags Fo back through the wrong TSA line because the signage is poor Almost miss the connecting flight because your gate is across the airport.

The checking was disaster, the crew wasn't behave well. It took us two hours to check in, after that thr line at the TSA was long, we barely make the flight. Bad airline

Fabulous if you have a portable wheelchair. They can store it in the galley and you can just walk out with it. Really nice and the flat seats are just incredible, very nice. iPads for movies, also pretty nice,

The crew were exceptionally nice and accommodating. My wife was tired after the flight from Haneda, Tokyo. They let her sleep and served her dinner later after she woke up, before we landed in PDX.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

Everything you need to know for your flight from Boise to Washington

Information on your arrival and departure airports