HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Falmouth

$114+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Falmouth with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Falmouth are usually found in January or February, booked 38 days in advance, depart on a Friday or Wednesday and return on a Thursday

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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$228
(Agoda.com)

One-way from

$114
(Mytrip)

Popular in

July

Cheapest in

January

Average price

$288
Provider with most accurate pricing for Seattle/Tacoma Intl-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boston Logan Intl flights.
Search Deals
From Seattle/Tacoma Intl to Falmouth
Search Deals
One-way flight from Seattle/Tacoma Intl to Falmouth
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($141 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 March 31, 2025.

This Agoda.com deal was found by Cheapflights users on 3/30. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2811:30 pmSEA - BOS
Nonstop5h 25mHawaiian Airlines
Mon 5/57:00 amBOS - SEA
Nonstop6h 13mHawaiian Airlines
Deal found 3/30$228
This Agoda.com deal was found by Cheapflights users on 3/31. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2811:30 pmSEA - BOS
Nonstop5h 25mMultiple Airlines
Mon 5/57:00 amBOS - SEA
Nonstop6h 13mMultiple Airlines
Deal found 3/31$229
This JetBlue deal was found by Cheapflights users on 3/30. 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.
Sun 4/2011:55 pmSEA - BOS
Nonstop5h 25mJetBlue
Sat 4/267:18 pmBOS - SEA
Nonstop6h 27mJetBlue
Deal found 3/30$239
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/23:49 pmSEA - BOS
Nonstop5h 23mAlaska Airlines
Tue 5/67:47 pmBOS - SEA
1 stop15h 18mAlaska Airlines
Deal found 3/31$247
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/282:30 pmSEA - BOS
2 stops19h 44mSpirit Airlines
Wed 4/305:25 amBOS - SEA
2 stops41h 26mSpirit Airlines
Deal found 3/30$248
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3012:46 pmSEA - BOS
1 stop8h 13mUnited Airlines
Tue 5/610:45 amBOS - SEA
1 stop8h 37mUnited Airlines
Deal found 3/30$252
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Wed 4/305:22 amSEA - BOS
1 stop8h 52mAmerican Airlines
Wed 5/76:35 amBOS - SEA
1 stop9h 12mAmerican Airlines
Deal found 3/31$256
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1310:55 pmSEA - BOS
Nonstop5h 22mDelta
Thu 4/2411:05 amBOS - SEA
Nonstop6h 16mDelta
Deal found 3/30$292
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:00 amSEA - BOS
2 stops9h 55mSouthwest
Mon 9/226:30 pmBOS - SEA
1 stop8h 35mSouthwest
Deal found 3/30$347

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 March 31, 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

Mon 4/28

11:30 pm-7:55 am

Nonstop5h 25m

Boston Logan Intl

Mon 5/5

7:00 am-10:13 am

Nonstop6h 13m

$228

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 4/28

11:30 pm-7:55 am

Nonstop5h 25m

Boston Logan Intl

Mon 5/5

7:00 am-10:13 am

Nonstop6h 13m

$229

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 5/2

11:35 am-8:08 pm

Nonstop5h 33m

Boston Logan Intl

Sun 5/4

7:10 am-10:28 am

Nonstop6h 18m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 5/2

3:49 pm-12:12 am

Nonstop5h 23m

Boston Logan Intl

Fri 5/9

7:47 pm-8:35 am

1 stop15h 48m

$247

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 4/28

2:30 pm-1:14 pm

2 stops19h 44m

Boston Logan Intl

Wed 4/30

5:25 am-7:51 pm

2 stops41h 26m

$248

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 4/30

12:46 pm-11:59 pm

1 stop8h 13m

Boston Logan Intl

Tue 5/6

10:45 am-4:22 pm

1 stop8h 37m

$252

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 4/30

5:22 am-5:14 pm

1 stop8h 52m

Boston Logan Intl

Wed 5/7

6:35 am-12:47 pm

1 stop9h 12m

$256

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 4/13

10:55 pm-7:17 am

Nonstop5h 22m

Boston Logan Intl

Thu 4/24

11:05 am-2:21 pm

Nonstop6h 16m

$292

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 9/12

11:00 pm-12:15 pm

2 stops10h 15m

Boston Logan Intl

Mon 9/15

6:30 pm-12:05 am

1 stop8h 35m

$347

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 4/28

2:30 pm-1:14 pm

2 stops19h 44m

$114

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 19 results
1
2

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 March 28, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Falmouth, you should look to book at least 38 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 March 31, 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 December 16, 2024.

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. Saturday at noon 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 March 31, 2025.

The most flights from SEA to FM5 are scheduled on a Friday (31 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (15 on average).

Rainfall in Falmouth by month

Plan your trip to Falmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Falmouth ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Falmouth when rainfall is around 3.1 in.

Temperature in Falmouth by month

Plan your trip to Falmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Falmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 March 31, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Seattle to Falmouth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
Southwest
8.0
Very good
4,276 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
Hawaiian Airlines
7.9
Good
2,342 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies

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 23 outbound flights to Falmouth per day. 10 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 16 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Seattle to Falmouth one-way?

    One-way options have recently been found by users for as low as $114 on Spirit Airlines. Other airlines that offer cheap prices include JetBlue from $119 and Hawaiian Airlines from $124 one-way.

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

    Consider EL AL (92%), Qatar Airways (92%) or Delta (91%) 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 $788, our data indicates the cheapest price to be $99. The most popular route (Seattle/Tacoma Intl - Boston Logan Intl), is priced around $228.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Falmouth

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Boston flights
Portland to Boston flights
Seattle to Hartford flights
Seattle to Albany flights
Portland to Hartford flights
Spokane to Boston flights
Portland to Albany flights
Pasco to Boston flights
Spokane to Hartford flights
Spokane to Albany flights
Seattle to Provincetown flights
Seattle to Nantucket flights
Bellingham to Boston flights
Seattle to West Tisbury flights
Walla Walla to Boston flights
Yakima to Boston flights
Pullman to Albany flights
Portland to West Tisbury flights
Pasco to Hartford flights
Portland to Hyannis flights
Portland to Provincetown flights
Portland to Nantucket flights
Seattle to Hyannis flights
Pullman to Boston flights
Bellingham to Hartford flights
Portland to New Bedford flights
Yakima to Albany flights
Yakima to Hartford flights

Top 9 airlines flying from Seattle to Falmouth

Discover the top 9 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$108Average$457FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$139Average$589FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$145Average$277FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$176Average$380FlexibilityNo cancel feeOn-time83%
DeltaCheapest$181Average$415FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$223Average$486FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$237Average$438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$413FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$356Average$466FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.