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Find cheap flights from Seattle to Falmouth from $106

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Falmouth departing on 8/14. 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 6/20
Thu 6/27

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In the last 7 days travelers have searched 42,596,105 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

August

Cheapest flight

$106
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Seattle to Boston

When to book flights from Seattle to Falmouth

Are your dates flexible? Find out the best times to travel from Seattle to Falmouth based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Seattle to Falmouth

  • Which airports will I be using when flying from Seattle to Falmouth?

    When flying out of Seattle you’ll be using Seattle/Tacoma Intl. Falmouth does not have its own airport so you’ll be flying into nearby Boston Logan Intl airport, which is 59.7 mi away.

  • How long does a flight from Seattle to Falmouth take?

    Direct flights cover the 2,487 miles separating Seattle and Falmouth in about 5h 15m.

  • How many flights are there between Seattle and Falmouth?

    42 direct flights run between Seattle and Falmouth on a daily basis. On average, there are about 296 departures each week.

  • What’s the cheapest day of the week to fly between Seattle and Falmouth?

    Consider leaving on a Wednesday and avoid Mondays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Wednesdays and the most expensive ones on Fridays.

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

    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 Seattle to Falmouth.

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

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

    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 Falmouth with an airline and back to Seattle with another airline.

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

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

  • Which airlines provide the cheapest flights from Seattle to Falmouth?

    In the last 72 hours, the cheapest one-way ticket between Seattle and Falmouth found on KAYAK was with Spirit Airlines for $106. Spirit Airlines offered a round-trip connection from $212 and American Airlines from $283.

See more FAQs

Top tips for finding cheap flights from Seattle to Falmouth

  • There is no airport in Falmouth. Instead, you’ll be flying into Boston Logan Airport when flying between Seattle and Falmouth.
  • The cheapest flight from Seattle to Falmouth was found 41 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be June, July and August. The cheapest month to fly is January.
See more tips

Top 5 airlines serving Seattle to Falmouth

 
Need help choosing which airline to fly with from Seattle to Falmouth? 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 9163 reviews
7.3Entertainment
7.9Comfort
8.2Boarding
8.6Crew
7.3Food
Airline reviews

I do not feel the priority seating I paid for was was adequate for the cost. there was no difference from coach on any other airline, and it was very uncomfortable

4.0 OkayAnonymous, May 2024SEA - BWI
Read more about Alaska Airlines reviews

I do not feel the priority seating I paid for was was adequate for the cost. there was no difference from coach on any other airline, and it was very uncomfortable

First flights on Alaska Air, and I will go out of my way to fly them whenever I can in the future. An incredible experience, above and beyond any other airline.

It was warm on the plane. Perhaps the people who were coughing quite often should be encouraged to wear a mask?! It was a long 4 hours.

Why do you ask about food when only a snack is served? Actual food needs to be bought.

There was an older male crew member that was very rude to me when doing the last checks before pulling back from the terminal. There is a polite way to tell someone to put their bag under the seat. It was Mother’s Day and my mom has recently passed so it was a tough morning for me in general. There was no need to make for the snide remark “ I don’t know how many times we have said this already” as you walked away. I had held it together all morning and this interaction brought me to tears. love Alaska Airlines and this is the first time I’ve had a negative experience.

Alway a a breeze! And great mountain views on left side of plane during entire flight!

another delayed flight. no one at the desk kept us updated. we found out by an email as the desk was not even staffed up to expected takes off

They canceled my flight going back to SF after I was at the airport. Wanted me to take a flight 14 hours later. Not a happy camper.

Service was excellent. Staff at check in cleared hurdles for me so I could travel with my service animal.

Flight cancelled an hour before takeoff due to "unscheduled maintenance". New flight makes me have to wait for 5 hours in the airport, at a gate totally on the other side of where I'm at, requiring me to take a tram to get from the N terminal, to the C terminal. After waiting for 5 hours I'm informed my new flight is no longer at the gate I'm at, but instead is back in the N terminal where I was previously.

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

We were told that our flight would be delayed for 90+ minutes because of weather, so we went to get something to eat only to have them randomly start boarding 15 minutes after the announcement, with no warning.

Entertainment... No earphones passed out. Many including me couldn't use the TV. Legroom was good. Crew was indifferent and a bit surly. Free wifi was a nice convenience. Check in desk location was unknown. Gate number on the boarding passes was wrong.

Confusing. Delay updates were out of whack At one point it said my flight was 25 hours. Three gate changes and two delays only to change back to original departure time. Gate announcer and on board flight attendant (Alejandro) making the announcements was impossible to understand due to accent and speed of speech. After beverage service the rear flight attendants sat back there on their phones. No refills no checking in, one sweep through for trash collection. Very impersonal. Bring back Coke products

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Delayed by almost an hour - I also noticed that all JetBlue flights departing from PBI were delayed yet the weather was perfect.

I loved the wifi, much better than Delta. Seats were old. and bathrooms dingy.

There was no wheelchair or wheelchair escort at the gate..unacceptable

Delayed 4 hours because of maintenance issue they knew about all day. Get another plane. Time is precious!

I liked that boarding and take off were timely despite a 15 minute delay due to weather. The pilot communicated with us the entire flight keeping us informed re: turbulance and slight delays on the runway after we landed.

Has been always great except flight cancelation in the past at very last minute waiting till 2am and we when have to beg for overnight accommodation

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

Delayed so that missed connecting flight. Connecting flight was also delayed on the tarmac but they closed the gate before the rescheduled time.

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Took off over an hour late with multiple mechanical issues. Gate agent in Dallas was lazy and was slow as molasses. Had a line 10 people long. Spirit bad..

The flight was short. However, my bag was delayed and was put on another flight.

Flight attendant was incredible. Very efficient, friendly and pleasant. Patricia was one of the best I have ever seen. Please give her a big raise!

LIT to DFW - 3 hours late; the entire plane had been boarded before they told us there was a delay due to a weather-related ground stop in Dallas. DFW to MAY - 2+ hours late due to A/C needing to be repaired after everyone had boarded, then when we finally reach the runway, the First Officer timed out and we had to taxi all the way back to the gate and wait for a new one. I arrived in New Orleans 5+ hours later than I should have. Return flights were completely cancelled; rebooked through the app to fly through CLT instead of DFW. MSY to CLT had no issues, but CLT to LIT was delayed 1.25 hrs because flight attendants had not arrived to the airport yet. At least they didn’t make us all sit on the plane to wait for them. I should have driven.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in-flight WiFi. Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay that much for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a shitty attitude for no reason, nor will they act the way this woman did. Unacceptable.

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Delayed abs delayed Gate crew giving poor info - we are definitely leaving at —- Ultimately to cancel flight after 4+ hours of delays Just cancel it earlier

I had the exit seat with all the leg room I could ask for. Great!

Book cheap flights from Seattle to Falmouth

Recent round-trip flight deals

8/21Wed
1 stopSpirit Airlines
10h 37mSEA-BOS
8/27Tue
1 stopSpirit Airlines
16h 21mBOS-SEA
$212
8/20Tue
1 stopSpirit Airlines
10h 37mSEA-BOS
8/21Wed
2 stopsSpirit Airlines
29h 45mBOS-SEA
$223
9/10Tue
1 stopAmerican Airlines
8h 10mSEA-BOS
9/21Sat
1 stopAmerican Airlines
8h 35mBOS-SEA
$283
9/24Tue
nonstopDelta
5h 20mSEA-BOS
10/5Sat
nonstopDelta
6h 21mBOS-SEA
$307
9/10Tue
1 stopJetBlue
10h 14mSEA-BOS
9/17Tue
1 stopJetBlue
12h 39mBOS-SEA
$316
9/9Mon
nonstopDelta
5h 20mSEA-BOS
9/17Tue
nonstopDelta
6h 21mBOS-SEA
$317
9/9Mon
1 stopAmerican Airlines
10h 25mSEA-BOS
9/18Wed
1 stopAmerican Airlines
10h 23mBOS-SEA
$318
9/9Mon
nonstopJetBlue
5h 23mSEA-BOS
9/17Tue
1 stopJetBlue
12h 39mBOS-SEA
$326
9/1Sun
1 stopAlaska Airlines
9h 35mSEA-BOS
9/4Wed
nonstopAlaska Airlines
6h 14mBOS-SEA
$341
9/5Thu
1 stopAlaska Airlines
7h 35mSEA-BOS
9/12Thu
nonstopAlaska Airlines
6h 14mBOS-SEA
$346

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Recent one-way flight deals

8/14Wed
1 stopSpirit Airlines
10h 37mSEA-BOS
$106
6/11Tue
2 stopsSpirit Airlines
21h 50mSEA-BOS
$111
9/16Mon
1 stopAmerican Airlines
7h 47mSEA-BOS
$142
6/13Thu
nonstopDelta
5h 30mSEA-BOS
$184
6/2Sun
nonstopDelta
5h 28mSEA-BOS
$199
6/9Sun
nonstopJetBlue
5h 29mSEA-BOS
$204
7/31Wed
1 stopJetBlue
10h 11mSEA-BOS
$213
6/16Sun
nonstopAlaska Airlines
5h 19mSEA-BOS
$224
8/10Sat
1 stopAlaska Airlines
30h 36mSEA-BOS
$232
7/22Mon
1 stopAmerican Airlines
9h 39mSEA-BOS
$248

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Last minute flights from Seattle to Falmouth

Last minute flight, train and bus deals

5/25Sat
multi-stop
13h 18mSEA-BOS
5/30Thu
multi-stop
28h 51mBOS-SEA
$373
5/25Sat
multi-stop
13h 18mSEA-BOS
5/30Thu
nonstop
6h 01mBOS-SEA
$400
5/25Sat
multi-stopAmerican Airlines
10h 47mSEA-BOS
5/30Thu
multi-stopAmerican Airlines
8h 38mBOS-SEA
$465
5/25Sat
multi-stopDelta
9h 15mSEA-BOS
5/30Thu
nonstopDelta
6h 17mBOS-SEA
$527
5/24Fri
nonstopAlaska Airlines
5h 24mSEA-BOS
5/27Mon
nonstopAlaska Airlines
6h 05mBOS-SEA
$537
5/24Fri
nonstopAlaska Airlines
5h 24mSEA-BOS
5/29Wed
multi-stopAlaska Airlines
8h 42mBOS-SEA
$546
5/22Wed
multi-stopDelta
7h 10mSEA-BOS
5/27Mon
nonstopDelta
6h 17mBOS-SEA
$547
5/24Fri
multi-stopAmerican Airlines
8h 13mSEA-BOS
5/29Wed
multi-stopAmerican Airlines
9h 27mBOS-SEA
$553
5/24Fri
nonstopJetBlue
5h 29mSEA-BOS
5/26Sun
nonstopJetBlue
6h 05mBOS-SEA
$677
5/22Wed
nonstopJetBlue
5h 29mSEA-BOS
5/26Sun
multi-stopJetBlue
8h 27mBOS-SEA
$734

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