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BOS - SEA

Find cheap flights from Boston to Seattle from $125

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Seattle departing on 4/24. 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
Sat 5/18
Sat 5/25

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Seattle.
In the last 7 days travelers have searched 44,553,814 times on KAYAK, and here is why:

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Cheap flight deals from Boston to Seattle (BOS-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Seattle 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
7:00 am - 7:01 pmBOS-SEA
15h 01m1 stop
9:38 am - 11:15 pmSEA-BOS
10h 37m1 stop
Wed, Sep 11 - Tue, Sep 17
7:59 pm - 11:13 pmBOS-SEA
6h 14mnonstop
3:15 pm - 10:33 amSEA-BOS
16h 18m1 stop
Thu, May 2 - Sat, May 4
10:04 am - 7:04 pmBOS-SEA
12h 00m1 stop
9:44 pm - 9:14 amSEA-BOS
8h 30m1 stop
$251American Airlines
Find Deal
Sat, Apr 27 - Tue, Apr 30
7:00 am - 12:42 pmBOS-SEA
8h 42m1 stop
10:05 pm - 9:18 amSEA-BOS
8h 13m1 stop
$252American Airlines
Find Deal
Thu, May 2 - Wed, May 8
7:59 pm - 11:13 pmBOS-SEA
6h 14mnonstop
9:25 pm - 5:45 amSEA-BOS
5h 20mnonstop
$257Alaska Airlines
Find Deal
Thu, May 2 - Sat, May 4
5:24 pm - 8:35 pmBOS-SEA
6h 11mnonstop
9:05 pm - 5:36 amSEA-BOS
5h 31mnonstop
$272JetBlue
Find Deal
Sun, Apr 28 - Thu, May 2
7:35 pm - 10:54 pmBOS-SEA
6h 19mnonstop
7:50 am - 4:21 pmSEA-BOS
5h 31mnonstop
$277Delta
Find Deal
Thu, May 2 - Sat, May 4
12:45 pm - 10:20 pmBOS-SEA
12h 35m1 stop
9:05 pm - 5:36 amSEA-BOS
5h 31mnonstop
$281JetBlue
Find Deal
Mon, Apr 29 - Sun, May 5
7:59 pm - 11:08 pmBOS-SEA
6h 09mnonstop
6:30 am - 2:56 pmSEA-BOS
5h 26mnonstop
$287Alaska Airlines
Find Deal
Fri, May 31 - Mon, Jun 3
6:55 pm - 10:12 pmBOS-SEA
6h 17mnonstop
10:31 pm - 6:59 amSEA-BOS
5h 28mnonstop
$317Delta
Find Deal
Sat, May 25 - Sat, Jun 1

Flights from Boston to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Boston to Seattle 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 Boston to Seattle?

The average price of all flights from Boston to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from Boston to Seattle, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Boston, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

What is the cheapest month to fly from Boston to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to Seattle, 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 Boston to Seattle is January, where tickets cost $217 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $512 and $498 respectively.

How far in advance should I book a flight from Boston to Seattle?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Boston to Seattle, 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 Boston to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 27 days before departure.

Which airlines provide the cheapest flights from Boston to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Boston to Seattle were found on American Airlines ($251) and Alaska Airlines ($257). American Airlines proposed the cheapest one-way flight at $125.

Which airlines fly most frequently between Boston and Seattle?

In normal times, Alaska Airlines flies from Boston to Seattle up to 5 times per day, Delta up to 4 times per day, and JetBlue 1 time per day.

Which airlines fly non-stop between Boston and Seattle?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Boston to Seattle.
There are 4 airlines that fly nonstop from Boston to Seattle. They are: Alaska Airlines, Delta, Hainan Airlines and JetBlue. The cheapest price of all airlines flying this route was found with JetBlue at $132 for a one-way flight. On average, the best prices for this route can be found at Alaska Airlines.

How many flights are there between Boston and Seattle per day?

Each day, there are between 9 and 14 nonstop flights that take off from Boston and land in Seattle, with an average flight time of 6h 13m. The most common departure time is 7:00 pm and most flights take off in the morning. Each week, there are 75 flights. The most frequent day of departure is Friday, when 19% of all weekly flights depart. The fewest flights depart on a Tuesday.

Which cabin class options are there for flights between Boston and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Boston to Seattle take?

The duration of a nonstop flight to Seattle from Boston is typically 6h 01m. The journey crosses a distance of 2,487 miles.

What’s the earliest departure time from Boston to Seattle?

Early birds can take the earliest flight from Boston at 6:30 am and will be landing in Seattle at 9:50 am.

What’s the latest departure time from Boston to Seattle?

If you prefer to fly at night, the latest flight from Boston to Seattle jets off at 7:59 pm and lands at 11:08 pm.

Good to know

Low season

January

High season

August

Cheapest flight

$125
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly with an average 33% increase in price.
Flight from Boston to Seattle

When to book flights from Boston to Seattle

Are your dates flexible? Find out the best times to travel from Boston to Seattle 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 Boston to Seattle

  • Are there lounges at SEA?

    Multiple airlines run several lounges at Seattle-Tacoma International Airport (SEA). They include The American Express Centurion Lounge and the United Club. Travelers flying aboard Alaska Airlines should know that the airline operates three lounges at this facility. There’s one at Concourse C, adjacent to gate C16A, Concourse D, near gate D1, and the North Satellite Terminal, close to gate N2.

  • Which airline has its hub at SEA?

    Passengers flying aboard Delta Airlines should remember that the carrier has its hub at Seattle-Tacoma International Airport (SEA), and you'll arrive through the main terminal, Concourse A. You'll enjoy the two Delta Sky Clubs located in Concourse A, near gate A, and South Satellite Terminal, near gate S9. Also, you'll receive priority clearance under the fast lane program.

  • Are there lactating rooms at SEA?

    Seattle-Tacoma International Airport (SEA) features suites that cater to the needs of moms. Located in Concourse D on the lower level of D Annex, these rooms provide privacy as you pump and breastfeed the little ones. Other amenities in these rooms include sinks, comfy chairs, and electrical sockets.

  • Can I leave my luggage at Seattle-Tacoma International Airport (SEA)?

    Passengers arriving at SEA from BOS who feel that they want to leave excess baggage behind, you’ll get storage facilities between baggage carousels 12 & 13. The facility lockers operate between 5:30 am until 12:30 am.

  • Are there onsite hotels at Seattle-Tacoma International Airport?

    While there are no hotels located onsite at Seattle-Tacoma International Airport, there is a cluster of hotels just shy of a mile away from the airport’s terminals. Hilton Seattle Airport & Conference Center, Crowne Plaza Seattle Airport, and Seattle Airport Marriott all are within a mile of the airport and offer free airport pickup and drop-off.

  • Can I fly from Boston to Seattle non-stop?

    Alaska Airlines, jetBlue Airways, and Delta Air Lines all offer nonstop flights from Boston to Seattle. One-stop flights are also common between the two cities, with flights offered by airlines such as United Airlines, Delta Air Lines, and American Airlines. Common layover cities for such flights include Washington D.C., Detroit, and Philadelphia.

  • What is the quickest way from Seattle-Tacoma International Airport to downtown Seattle?

    If you are not renting or driving a vehicle, Link Light Rail is the quickest way to get from the airport to downtown Seattle. Link Light Rail trains connect Seattle-Tacoma International Airport directly to downtown Seattle, and they even run all the way north up to the University of Washington. The airport’s Link station is found on the fourth floor of the adjacent parking garage.

  • What facilities are available for children in Seattle-Tacoma International Airport and Boston Logan International Airport?

    Seattle-Tacoma International Airport and Boston Logan International Airport both have children’s play areas available. Seattle-Tacoma International Airport’s children’s play area, the Playroom, is located across from the Seattle Tap Room by the A gates in the Central Terminal. Boston Logan International Airport’s three children’s play areas are located by Gate 18 in Terminal A, Gate 30 in Terminal B, and Gate 25 in Terminal C.

  • What is the cheapest flight from Boston to Seattle?

    In the last 3 days, the lowest price for a flight from Boston to Seattle was $125 for a one-way ticket and $232 for a round-trip.

  • Do I need a passport to fly between Boston and Seattle?

    No, a passport isn't needed to fly from Boston to Seattle. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Boston to Seattle?

    All the following airlines offer inflight Wi-Fi service on the Boston to Seattle flight route: JetBlue, Alaska Airlines, Delta, Hawaiian Airlines, Aeromexico, American Airlines, and Qatar Airways.

  • Which aircraft models fly most regularly from Boston to Seattle?

    The Airbus A321neo is the aircraft model that flies most regularly on the Boston to Seattle flight route.

  • Which airline alliances offer flights from Boston to Seattle?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Boston and Seattle, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Boston to Seattle?

    There are nonstop flights from Boston to Seattle on a daily basis.

  • Which is the best airline for flights from Boston to Seattle, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Boston to Seattle are Alaska Airlines and Delta. With an average price for the route of $378 and an overall rating of 8.1, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $378 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Boston to Seattle?

    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 Boston to Seattle.

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

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

    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 Seattle with an airline and back to Boston with another airline. Booking your flights between Boston and SEA 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 Boston to Seattle?

    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 Seattle from Boston 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 a cheap flight from BOS to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $218 or less one-way and $335 or less round-trip.
  • As the busiest airport in Boston, Boston Logan International Airport (BOS) features high-tech innovations and modern infrastructure. This makes it the airport of choice among most airlines, partly the reason why it’s ranked among the 20 busiest airports in the US. Domestic departures and arrivals are through terminals, A, B, and C, while E is reserved for international flights. You can easily connect the terminals via walkways. Also, a shuttle operates between these terminals every 5-15min.
  • Boston Logan International Airport (BOS) in collaboration with Transportation Security Administration (TSA) runs a Cares program that ensures that disabled passengers and travelers with mobility limitations receive assistance. You’ll get dedicated staff to guide you through the security checkpoints and when enplaning. To take advantage of these services, endeavor to contact your airline about 72h before departure.
  • For the prayerful travelers who need a quiet escape to have a moment with the Almighty before the flight, BOS has a chapel at your disposal. You can locate this religious sanctuary in Terminal C before security, on the Arrivals Level. The oasis conducts frequent interfaith prayers to the interest travelers, whether departing or arriving.
  • In case you’re feeling fatigued ahead of your trip BOS to Seattle-Tacoma International Airport (SEA), locate Xpress Spa in Terminal B, close to the American Airlines counter, or Jet Setter Mini Spa and Classique Nail Salon in Terminal C. Services at these outlets such as facials and deep tissue massage provide the much-needed calmness and relaxation before you take off.
  • If your wallet is depleted and you need to recharge it before leaving Boston Logan International Airport (BOS) for Seattle-Tacoma International Airport (SEA), you won’t have a shortage of options to choose from. Those departing through Terminal A will find various ATMs before security.
  • Looking for a family-friendly diversion during your time at Boston Logan International Airport? A good option for art-loving families is Logan International’s Airport Public Art Program. The program features a variety of temporary exhibits that aim to enliven the airport’s environment while simultaneously educating the public.
  • For travelers flying with their four-legged companions on their flights from Boston to Seattle, you will be happy to hear that both airports have pet relief areas available. Boston Logan International Airport’s pet relief areas are located by the Arrivals area outside of the terminals as well as in Terminal E. In Seattle-Tacoma International Airport there are five pet relief areas: two outside of Baggage Claim and the three others by the N, S, and B Gates.
  • Boston Logan International Airport has plenty to offer in terms of dining that offers a bit of local flare. The Harpoon Tap Room, for instance, is a branch of Boston’s Harpoon Brewery and serves a variety of local brews along with a variety of barroom classics. Another local option is Dine Boston. Dine Boston offers a seasonal menu that is updated regularly by guest chefs from the Boston gastronomical scene.
  • For travelers picking up a rental car upon arriving at Seattle-Tacoma International Airport, the airport’s rental car facilities are found in a separate building that is accessible by 24/7 shuttle buses. The shuttle buses pick up from outside of Baggage Claim on both the north and south side of the terminal.
  • Traveling from the suburbs to Boston Logan International Airport? One easy option is to hop on the Logan Express instead of renting a car. The Logan Express features stops in many of Boston’s suburbs such as Framingham, Back Bay, and Woburn.
See more tips

Prefer to fly non-stop from Boston to Seattle?

Find which airlines fly direct from Logan Intl to Seattle/Tacoma Intl, which days they fly and book direct flights.

Nonstop departures

Boston Logan Intl to Seattle/Tacoma Intl

Monday

Aer Lingus, Air France, Air Tahiti Nui, +17 more

Aer Lingus, Air France, +18 more

Tuesday

Aer Lingus, Air France, Air Tahiti Nui, +15 more

Aer Lingus, Air France, +16 more

Wednesday

Aer Lingus, Air France, Air Tahiti Nui, +17 more

Aer Lingus, Air France, +18 more

Thursday

Aer Lingus, Air France, Air Tahiti Nui, +16 more

Aer Lingus, Air France, +17 more

Friday

Aer Lingus, Air France, Air Tahiti Nui, +16 more

Aer Lingus, Air France, +17 more

Saturday

Aer Lingus, Air France, Air Tahiti Nui, +15 more

Aer Lingus, Air France, +16 more

Sunday

Aer Lingus, Air France, Air Tahiti Nui, +16 more

Aer Lingus, Air France, +17 more

See more direct flights

Nonstop returns

Seattle/Tacoma Intl to Boston Logan Intl

Monday

Air France, Air Tahiti Nui, Alaska Airlines, +13 more

Air France, Air Tahiti Nui, +14 more

Tuesday

Air France, Air Tahiti Nui, Alaska Airlines, +15 more

Air France, Air Tahiti Nui, +16 more

Wednesday

Air France, Air Tahiti Nui, Alaska Airlines, +13 more

Air France, Air Tahiti Nui, +14 more

Thursday

Air France, Air Tahiti Nui, Alaska Airlines, +15 more

Air France, Air Tahiti Nui, +16 more

Friday

Air France, Air Tahiti Nui, Alaska Airlines, +13 more

Air France, Air Tahiti Nui, +14 more

Saturday

Aer Lingus, Air France, Air Tahiti Nui, +16 more

Aer Lingus, Air France, +17 more

Sunday

Air France, Air Tahiti Nui, Alaska Airlines, +15 more

Air France, Air Tahiti Nui, +16 more

See more direct flights
See more direct flights

Top 5 airlines serving from Boston to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Boston to Seattle. 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 Boston to Seattle? 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.
8.1
Alaska AirlinesOverall score based on 9106 reviews
8.6crew
7.9comfort
7.3food
8.2boarding
7.3entertainment
Airline reviews

On time, comfortable seats with plenty of leg room, nice staff. Pretty good!

8.0 ExcellentLianne, Apr 2024RDM - SEA
Read more about Alaska Airlines reviews

On time, comfortable seats with plenty of leg room, nice staff. Pretty good!

I did not like anything about that flight. The check in at the gate was horrible. The inflight service was bad and WiFi was not available for me to be able to entertain myself since it was a long flight.

Becoming shittier by the day. Spirit airlines was way better and gave better value for money.

I asked to be moved near the bathroom due to kidney issues. The gate agent was very kind and did that for me.

The seat side plug ins didn’t work in my row, and I ran out of things to do since my iPad and iPhone ran out of juice. The flight attendant offered me a free drink but I don’t drink. I suggested a free snack box instead and she just shrugged and walked off. Why do us non-drinkers get the short end of the stick?

The flight crew was super friendly. All flights were on-time. Everything went smoothly!

I am an avid customer to Alaska Airlines and I was so disappointed with my flight experience on flight 639 with service from Phoenix to Seattle. This flight was supposed to take off at 7am. We sat on the airplane for an hour before we had to deplane due to a mechanical issue, which is fine. The agents working at the desk let us know that they would update us every 30 minutes with new information about our flight and that at the moment they were only helping customers who, due to the delay, would miss their connecting flights in Seattle, which was understandable. 1.5 hours went by before we got our first update of “unfortunately there is no update” finally, after 3 hours of waiting with hardly any update, I got in line with the rest of the passengers to figure out my next move due to the fact that I was supposed to be at a wedding that night and that I had spent a lot of money to make that morning flight. After sitting in line for over an hour to get help, I decided to call customer service to see if they could help me rebook a flight just in case, to which the agent said she could rebook me for a flight at 3:31pm that had 3 seats left on the flight. So I took it with the hopes that I would at least make the dinner portion of the wedding. I spoke to the gate agent and asked how I could retrieve my bags and he said they will be moved over to my new flight (2 gates down). Finally after being at the airport for 10 hours, it was time for me to hop on my new flight before I came to find out that I was on the standby list after being told that I had 1 of 3 seats that were left. I went and talked to the new agent to which he said, “yeah sorry there was a family who was after you on the waitlist so we gave them priority, so now there are 3 people ahead of you so you may actually not get on this flight.” All I could think about was how frustrated I was that I paid over $400 for a flight to get told that I may not make it home anytime soon. Finally, somehow a kind person gave up their seat for me to get on with compensation for him. When I mentioned that I had been at the airport since 5am (10+ hours) verbatim the gate agent said, “yeah that sucks, but it happens” absolutely no sympathy or support whatsoever. I then asked about my bag and if it was moved to this flight and the gate agent told me “they may not have had time to move it over so you might not get your bags today” so from my understanding from 11am when I changed my flight until 3:31pm my bag didn’t have time to move two gates? That seems ridiculous. Luckily I checked my app and it showed that it was moved. It was a long day of terrible customer service, no updates for new flights, long wait times, no compensation besides $12 for food that I didn’t even receive to my email until I landed in Seattle, having to wait 35 minutes for my bag at baggage claim upon my arrival in Washington, all to miss a wedding that I should have been a huge part of. So disappointing for someone who religiously flies with Alaska and has 4 or 5 more trips over the next few months with the airline and not a single dollar or mile returned for poor service.

Good! Although I wish I didn’t have to check my bag at the gate, when I got on the plane there was plenty of room for the bag.

The cabin stewart took care of my garment bag and then made sure I did not forget it on my way out. The stewardess gave me water after I missed the earlier service (I was asleep). I received good service overall.

It was a great flight and the flight crew was very helpful and professional.

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

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.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

Really liked the choice of the 4 free snack options. Crew great. Good vibe on plane.

I had back trouble prior to my flight and everyone was great about helping me.

My tv was broken on the flight which is disappointing when you pay for a seat and expect a service

Always delays from Boston to Salt lake but this time was very long. Don’t understand while they board the passengers and then make them sit in the plane

Service for food to our seat was a bit slow. Snack choices were just pretzels or baked chips. My seat cushion was not attached. Other than Barbie, video choice were not very good or current.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

almost 4 hour delay as they over booked and had to wait for 8-10 volunteers to agree to travel next day.

Old plane. No outlets for laptop or phone. Seats worn out. Area around seat dirty.

I loved the flight and the crew. It was comfortable and smooth.

The crew was openly hostile and condescending to the customers. They spent the majority of that time in the rear talking and seemed really agitated when people asked questions. I heard five different people told that the information they requested was in the handout or safety brief.

ticketing issues caused many customers to have to go back to check in after waiting in security, then go through security line again.

I had trouble finding a boarding pass because I had an hour between Flights and American did not see my flight I believe because I was ticketed through KAYAK. I did not have enough time to go to the desk before boarding so I went to the desk and told them while I was boarding and they had a boarding pass for me within three minutes. Nice. I paid extra to have more legroom and it is definitely worth it for a six hour flight. I would’ve paid for a decent dinner, but they didn’t offer anything but a snack box —not good for six hours.

delayed delayed delayed. was supposed to have a 2 hour layover and very nearly missed my connection.

Despite a bumpy flight the pilot was great. The rest of the crew on the other hand couldn’t care less if a passenger would colapse and die. Horrible service, robot like, lifeless…

No service due to turbulence. No entertainment on this type of aircraft. But nice old comfortable seats.

Terrible flight seats where really uncomfortable I had body aches for 2 days and flight was delays almost two hours

Great service, on time, professional experience. Great landing under challenging crosswind conditions at BWI. I made my connection in Charlotte despite the plane getting stuck finding a gate to park in on arrival. The only glitch -- the Airbus 320 from CLT to BWI was quite comfortable, but the larger 321 from Logan to Charlotte had minimal leg/knee room. I get that it's a high volume route but dang, couldn't even open my laptop it was so tight

Very smooth for one of the busiest travel days of the year and the crew was great.

Customer service prior to boarding is horrible Communication regarding boarding gates is released at the last minute and the gates are very distant from Customs. Very disappointing

Flight was delayed 4 hours for no reason given. We were not updated. We were not given any food or drink. We were not offered any compensation.

the entertainment center did not work, upon request of resetting the device by me for 3 times. the device refused to work. the flight crew was not apologetic and did not offer any other solutions. such as moving me to another seat to accomodate their problem.

On time and fast. Overall it was a pleasant experience.

The weight limit per bag was really low - 40 lbs - so we had to pay extra. Then, they said their carry on size was 14x18x8, and we measured our bag very carefully. It was within the limit, yet they said it was too big, so we ended up paying an extra $100 for that too!! So it wasn’t the cheap flight we thought it would be. Then, they moved up our initial flight to depart 3 hours earlier which meant we had to be out on the road by 7 am and then have a 6 hour layover and we got home at 2am. It was a grueling day. I won’t be flying with them again.

Overall it was a good experience. Stewards were very kind and professional. The departure and arrival times were as promised. Plane was clean.

The seat are terrible. Don’t even think of sleeping on a Spirit flight. The kids that run the plane aka flight attendants are pretty rude and straight forward. They get the job done but without class.

No frills, limited comfort, no food, no entertainment, but fine

I had a death in my family and booked my flight on Spirit. My flight was cancelled the morning of my flight, no explanation, no help to rebook, nobody to talk to. The next available flight was 2days later !!!! Terrible airline, will NEVER fly with them again!

Flight was canceled. Knew there was weather, and were notified of 20 min delayed, and then suddenly canceled. Next reschedule was for 2 days. No help other than to refund. Thankfully full refund and appreciate that. I appreciate discounted airline but felt they could've done more for customer inconvenience.

The seat was very uncomfortable from Boston to Nashville. Otherwise the flight was excellent.

Terrible as usual!!!! Very unprofessional and rude flight attendants! You get what you pay for! HORRIBLE

There was a .79 discrepancy between the cost of the flight and what was paid. Spirit didn't let me obtain my boarding pass until the .79 (seventy nine cents) was paid. Contacting their customer service to resolve the issue was a nightmare that involved many wait minutes and two different departments. The price Kayak gave to Affirm, whom I used to pay for the tickets, and the price Spirit charged for the flight were off by the .79. I almost lost the ticket because of the hassle.

Book cheap flights from Boston to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to Seattle found on KAYAK in the last 72 hours.
4/24Wed
1 stopAmerican Airlines
10h 38mBOS-SEA
$125
5/6Mon
1 stopAmerican Airlines
8h 38mBOS-SEA
$126
5/3Fri
nonstopAlaska Airlines
6h 14mBOS-SEA
$128
5/3Fri
nonstopAlaska Airlines
6h 14mBOS-SEA
$129
5/1Wed
2 stopsSpirit Airlines
19h 39mBOS-SEA
$131
4/28Sun
nonstopJetBlue
6h 11mBOS-SEA
$144
6/2Sun
2 stopsSpirit Airlines
38h 46mBOS-SEA
$145
6/3Mon
1 stopJetBlue
8h 27mBOS-SEA
$153
5/14Tue
nonstopDelta
6h 17mBOS-SEA
$154
6/11Tue
nonstopDelta
6h 17mBOS-SEA
$159

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Last minute flights from Boston to Seattle

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 Boston to Seattle that are departing in the next 10 days.
4/22Mon
multi-stopSun Country Air
8h 45mBOS-SEA
4/26Fri
multi-stopSun Country Air
13h 53mSEA-BOS
$333
4/23Tue
multi-stop
18h 10mBOS-SEA
5/1Wed
multi-stop
14h 48mSEA-BOS
$335
4/21Sun
multi-stopAmerican Airlines
10h 08mBOS-SEA
4/29Mon
multi-stopAmerican Airlines
8h 30mSEA-BOS
$417
4/20Sat
multi-stopAmerican Airlines
10h 08mBOS-SEA
5/3Fri
multi-stopAmerican Airlines
9h 33mSEA-BOS
$418
4/20Sat
nonstopDelta
6h 20mBOS-SEA
5/4Sat
nonstopDelta
5h 31mSEA-BOS
$447
4/20Sat
multi-stopJetBlue
12h 37mBOS-SEA
5/4Sat
nonstopJetBlue
5h 31mSEA-BOS
$449
4/23Tue
multi-stopJetBlue
10h 13mBOS-SEA
5/1Wed
multi-stopJetBlue
10h 44mSEA-BOS
$459
4/22Mon
nonstopAlaska Airlines
6h 14mBOS-SEA
4/27Sat
nonstopAlaska Airlines
5h 28mSEA-BOS
$462
4/20Sat
nonstopAlaska Airlines
6h 14mBOS-SEA
5/1Wed
nonstopAlaska Airlines
5h 20mSEA-BOS
$467
4/21Sun
multi-stopDelta
8h 12mBOS-SEA
4/25Thu
nonstopDelta
5h 19mSEA-BOS
$471

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Boston - Seattle Flights

Departure:

Boston (BOS)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Boston

Cabin classes:

$1,417
$1,096
$865
$153