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Falmouth

$119+ Cheap flights from Seattle (SEA) to Falmouth, MA, MA

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Falmouth are usually found in January or March, booked 70 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Falmouth

Keep the following information in mind while searching for Seattle to Falmouth flight deals. Data was last updated September 16, 2025.

Round-trip from

$175
(lastminute.com)

One-way from

$119
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$337
From Seattle/Tacoma Intl to Falmouth
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One-way flight from Seattle/Tacoma Intl to Falmouth
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High demand for flights, 5% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Falmouth

Cheapest flights from Seattle to Falmouth
Explore the most affordable flight options available from Seattle to Falmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This lastminute.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/181:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Fri 10/248:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/14$175
This JetBlue deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/181:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Thu 10/238:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/15$187
This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3011:05 pmSEA - BOS
1 stop8h 05mAmerican Airlines
Sat 10/412:52 pmBOS - SEA
1 stop10h 17mAmerican Airlines
Deal found 9/13$197
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:54 pmSEA - BOS
1 stop10h 30mAmerican Airlines
Tue 10/215:44 pmBOS - SEA
1 stop9h 43mAmerican Airlines
Deal found 9/16$201
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:10 pmSEA - BOS
Nonstop5h 36mJetBlue
Wed 10/228:20 amBOS - SEA
Nonstop6h 39mJetBlue
Deal found 9/14$202
This Trip.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:59 pmSEA - BOS
Nonstop5h 21mAlaska Airlines
Tue 11/47:00 amBOS - SEA
Nonstop6h 35mAlaska Airlines
Deal found 9/15$205

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Falmouth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Seattle to Falmouth that are best for you.

Fly from

Seattle

Fly to

Falmouth

Route

Depart

Return

Price

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 10/30

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Sun 11/2

7:20 am-10:45 am

Nonstop6h 25m

$217

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 11/7

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Mon 11/10

11:10 am-2:36 pm

Nonstop6h 26m

$217

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 10/28

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Fri 11/7

6:55 pm-10:22 pm

Nonstop6h 27m

$217

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/15

11:40 pm-11:45 am

1 stop9h 05m

Boston Logan Intl

Wed 10/22

8:20 am-11:59 am

Nonstop6h 39m

$236

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 10/25

3:35 pm-11:59 pm

Nonstop5h 24m

Boston Logan Intl

Wed 10/29

6:59 pm-10:20 am

1 stop18h 21m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/15

1:10 pm-9:46 pm

Nonstop5h 36m

Boston Logan Intl

Tue 10/21

8:20 am-11:59 am

Nonstop6h 39m

$241

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 12/4

8:29 pm-3:37 pm

1 stop16h 08m

Boston Logan Intl

Mon 12/8

6:20 pm-9:51 pm

Nonstop6h 31m

$247

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 10/27

3:59 pm-12:20 am

Nonstop5h 21m

Boston Logan Intl

Wed 11/5

9:00 am-12:35 pm

Nonstop6h 35m

$257

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 9/30

7:50 am-4:22 pm

Nonstop5h 32m

Boston Logan Intl

Wed 10/8

7:20 am-10:45 am

Nonstop6h 25m

$257

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 11/19

10:05 pm-6:35 am

Nonstop5h 30m

Boston Logan Intl

Mon 11/24

7:15 am-10:45 am

Nonstop6h 30m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 24 results
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Best time to book a flight from Seattle to Falmouth

Have a flexible travel schedule? Discover the best time to fly to Falmouth from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Falmouth

How far ahead should I book a flight from Seattle to Falmouth?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Falmouth. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Falmouth, you should look to book at least 70 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Falmouth?

Currently, January is the cheapest month in which you can book a flight from Seattle to Falmouth (average of $218). Flying from Seattle to Falmouth in July is currently the most expensive (average of $311). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to FM5?

Find hourly flight availability from Seattle to Falmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Seattle to Falmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Seattle to Falmouth?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Falmouth. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their Seattle to Falmouth flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Falmouth

Explore weekly flight availability from Seattle to Falmouth. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 16, 2025.

The most flights from SEA to FM5 are scheduled on a Friday (38 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (29 on average).

Reviews of airlines servicing Falmouth

Get insights into the airlines that provide service to Falmouth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Falmouth. Reviews last updated September 16, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to Falmouth. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,957 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
JetBlue
7.2
Good
2,914 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Falmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Falmouth?

    For a flight from Seattle to Falmouth, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 33 outbound flights to Falmouth per day. 8 airlines have flights to Falmouth from Seattle/Tacoma Intl on a regular basis.

  • How popular is this Seattle to Falmouth flight route?

    The Seattle/Tacoma Intl to Falmouth flight path was viewed by 15 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Falmouth?

    Delta, JetBlue, and Alaska Airlines can get you from Seattle to Falmouth in just under 5h 24m. Your travel time can differ by up to 3h 41m. There are 2487 mi between Seattle and Falmouth. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most reliable airlines from Seattle to Falmouth?

    Consider Air France (93%), EL AL (84%) or Virgin Atlantic (82%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Falmouth.

  • What are the cheapest flights from Seattle to Falmouth?

    Looking for the cheapest flight from Seattle to Falmouth? While on average our users pay $923, our data indicates the cheapest price to be $122. The most popular route (Seattle/Tacoma Intl - Boston Logan Intl), is priced around $187.

  • Can I find deals for flights from Seattle to Falmouth that include hotel bookings?

    Yes. In addition to deals on Seattle to Falmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Falmouth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Falmouth.

  • Can I find deals for business class flights from Seattle to Falmouth?

    Yes. Cheapflights offers flight deals from Seattle to Falmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Falmouth?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Falmouth (average of $218). Flying from Seattle to Falmouth in July is currently the most expensive (average of $311). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 8 airlines flying from Seattle to Falmouth

Discover the top 8 airlines that operate flights from Seattle to Falmouth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$118Average$351FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$131Average$324FlexibilityNo cancel feeOn-time62%
DeltaCheapest$152Average$431FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$178Average$471FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$410FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$213Average$412FlexibilityNo cancel feeOn-time63%
Sun Country AirCheapest$216Average$370FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$227Average$558FlexibilityNo cancel feeOn-time75%

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