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Find cheap flights from Seattle to Falmouth from $100

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 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
Mon 7/8
Mon 7/15

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In the last 7 days travelers have searched 43,124,673 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

August

Cheapest flight

$100
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 14m.

  • How many flights are there between Seattle and Falmouth?

    32 direct flights run between Seattle and Falmouth on a daily basis. On average, there are about 230 departures each week.

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

    Consider leaving on a Thursday and avoid Tuesdays 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 Mondays.

  • 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 $100. Spirit Airlines offered a round-trip connection from $206 and Alaska Airlines from $227.

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 9236 reviews
7.9Comfort
8.6Crew
7.3Entertainment
7.3Food
8.2Boarding
Airline reviews

I was sitting in row 31 and felt bad smell coming from the toilets especially when boarding and exiting not much during the flight.

8.0 ExcellentAnonymous, Jun 2024SEA - DFW
Read more about Alaska Airlines reviews

I was sitting in row 31 and felt bad smell coming from the toilets especially when boarding and exiting not much during the flight.

Great. They got us on an earlier flight. Really appreciated that

I had very little legroom and the only food available was really salty

Offer snacks/meals for people with food sensitivities. HAVE TV SCREENS!

Cabin crew very friendly and pleasant. Flight left late but we didn't know why. Alaska Airlines app was not user friendly -- app wouldn't let us upgrade our seats, but no indication if flight was full. We wound up having to call the airline to request an upgrade and we were told none was available. Waste of time. Baggage retrieval was easy.

The boarding gate is literally just an aisle to the concourse. There is no seating and it's shared with several other airlines. It's crowded, hot, and standing-room only. It's difficult to hear gate announcements over the PA system with too many other carriers crammed into a small space. I've enjoyed flying AA in the past on the west coast, but the BNA single gate experience is horrendous! Never again from BNA to SEA with AA.

It was a partial full flight. But even with a spare seat it was hard to get comfortable More on me being a wide body probably

Our flights using Alaska Airlines went great! All of the flight attendants were very friendly. Big shout out to the pilots for getting us to and from our destinations safely!

I can’t complain. Perhaps passing out headphones, but it was on me to bring my own since I could have used some for my personal device.

I liked only the crew. The flyght was too much fast, faster than it should be, on 20 min faster, but not safer, I experienced on myself astranautic overload from suddenly appearing in the sky and all the vibrations of the turbines, because I had my place at the level of the wings. Pregnant woman should not be seated on the level of the wings with all turbines, pregnant woman should be offered to charge place to seat closer to front or in the back, but not at the level of all the turbines. Vibrations of turbines are not healthy for pregnancy. I hold all the flight my belly in my hands to avoid miscarriage. If it would be longer flying distances, I could have miscarriage with Alaskan airlines.

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

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.

Great! I love Jet Blue. My favorite airline! Very efficient, clean and timely.

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.

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.

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I had a great flight. Everything went smoothly and the flight arrived early.

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

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

8/22Thu
1 stopSpirit Airlines
22h 00mSEA-BOS
8/26Mon
1 stopSpirit Airlines
32h 49mBOS-SEA
$206
8/20Tue
1 stopSpirit Airlines
22h 00mSEA-BOS
8/26Mon
2 stopsSpirit Airlines
27h 09mBOS-SEA
$218
8/21Wed
1 stopSpirit Airlines
22h 00mSEA-BOS
8/27Tue
2 stopsSpirit Airlines
31h 34mBOS-SEA
$222
9/17Tue
nonstopAlaska Airlines
5h 15mSEA-BOS
9/25Wed
nonstopAlaska Airlines
6h 17mBOS-SEA
$227
9/17Tue
nonstopAlaska Airlines
5h 15mSEA-BOS
9/24Tue
1 stopAlaska Airlines
10h 06mBOS-SEA
$236
9/11Wed
1 stopAmerican Airlines
10h 25mSEA-BOS
9/17Tue
1 stopAmerican Airlines
8h 34mBOS-SEA
$246
10/22Tue
nonstopDelta
5h 26mSEA-BOS
10/29Tue
nonstopDelta
6h 21mBOS-SEA
$247
9/11Wed
nonstopJetBlue
5h 23mSEA-BOS
9/17Tue
nonstopJetBlue
6h 21mBOS-SEA
$252
9/18Wed
1 stopJetBlue
10h 14mSEA-BOS
9/24Tue
nonstopJetBlue
6h 21mBOS-SEA
$261
9/18Wed
1 stopAmerican Airlines
11h 02mSEA-BOS
9/21Sat
1 stopAmerican Airlines
8h 35mBOS-SEA
$266

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Recent one-way flight deals

9/10Tue
3 stopsSpirit Airlines
21h 51mSEA-BOS
$100
8/14Wed
1 stopSpirit Airlines
22h 00mSEA-BOS
$109
10/15Tue
nonstopAlaska Airlines
5h 15mSEA-BOS
$110
9/4Wed
1 stopJetBlue
7h 15mSEA-BOS
$123
10/15Tue
1 stopAmerican Airlines
7h 49mSEA-BOS
$124
9/9Mon
nonstopJetBlue
5h 23mSEA-BOS
$149
9/6Fri
1 stopAlaska Airlines
9h 35mSEA-BOS
$158
6/17Mon
nonstopDelta
5h 40mSEA-BOS
$164
6/14Fri
1 stopAmerican Airlines
9h 38mSEA-BOS
$174
7/5Fri
nonstopDelta
5h 42mSEA-BOS
$249

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Last minute flights from Seattle to Falmouth

Last minute flight, train and bus deals

6/13Thu
multi-stop
21h 22mSEA-BOS
6/19Wed
multi-stop
19h 05mBOS-SEA
$424
6/12Wed
multi-stop
13h 46mSEA-BOS
6/17Mon
nonstop
6h 23mBOS-SEA
$430
6/12Wed
nonstopAlaska Airlines
5h 25mSEA-BOS
6/17Mon
nonstopAlaska Airlines
6h 17mBOS-SEA
$482
6/12Wed
multi-stopJetBlue
9h 50mSEA-BOS
6/17Mon
nonstopJetBlue
6h 13mBOS-SEA
$484
6/12Wed
multi-stopAmerican Airlines
9h 48mSEA-BOS
6/19Wed
multi-stopAmerican Airlines
11h 16mBOS-SEA
$501
6/13Thu
multi-stopAmerican Airlines
9h 48mSEA-BOS
6/24Mon
multi-stopAmerican Airlines
10h 31mBOS-SEA
$521
6/13Thu
nonstopAlaska Airlines
5h 22mSEA-BOS
6/19Wed
nonstopAlaska Airlines
6h 23mBOS-SEA
$522
6/13Thu
multi-stopJetBlue
10h 11mSEA-BOS
6/24Mon
nonstopJetBlue
6h 20mBOS-SEA
$579
6/12Wed
multi-stopDelta
7h 18mSEA-BOS
6/19Wed
nonstopDelta
6h 17mBOS-SEA
$587
6/12Wed
multi-stopDelta
7h 18mSEA-BOS
6/16Sun
nonstopDelta
6h 17mBOS-SEA
$617

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Flights to Falmouth

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