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Falmouth

$99+ 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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Falmouth are usually found in January or February, booked 80 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$149
(Kiwi.com)

One-way from

$99
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$264
Provider with most accurate pricing for Seattle/Tacoma Intl-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boston Logan Intl flights.
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From Seattle/Tacoma Intl to Falmouth
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One-way flight from Seattle/Tacoma Intl to Falmouth
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Highest demand for flights based on searches. 26% potential increase in price ($138 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/211:30 pmSEA - BOS
Nonstop5h 22mHawaiian Airlines
Tue 4/85:30 pmBOS - SEA
Nonstop6h 24mHawaiian Airlines
Deal found 2/20$149
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 3/1911:30 pmSEA - BOS
Nonstop5h 22mAlaska Airlines
Mon 3/245:30 pmBOS - SEA
Nonstop6h 24mAlaska Airlines
Deal found 2/20$157
This Mytrip deal was found by Cheapflights users on 2/18. 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.
Tue 3/117:57 pmSEA - BOS
2 stops12h 23mSpirit Airlines
Mon 3/171:56 pmBOS - SEA
3 stops32h 06mSpirit Airlines
Deal found 2/18$162
This JetBlue deal was found by Cheapflights users on 2/19. 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 3/3011:55 pmSEA - BOS
Nonstop5h 25mJetBlue
Thu 4/36:59 pmBOS - SEA
Nonstop6h 28mJetBlue
Deal found 2/19$167
This American Airlines deal was found by Cheapflights users on 2/19. 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 4/110:00 pmSEA - BOS
1 stop8h 21mAmerican Airlines
Tue 4/85:00 amBOS - SEA
1 stop8h 15mAmerican Airlines
Deal found 2/19$184
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/311:30 pmSEA - BOS
Nonstop5h 14mMultiple Airlines
Wed 3/512:15 pmBOS - SEA
2 stops26h 31mMultiple Airlines
Deal found 2/19$190
This Delta deal was found by Cheapflights users on 2/20. 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.
Fri 3/213:35 pmSEA - BOS
Nonstop5h 20mDelta
Sun 4/67:15 amBOS - SEA
Nonstop6h 21mDelta
Deal found 2/20$227
This United Airlines deal was found by Cheapflights users on 2/19. 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 3/511:20 pmSEA - BOS
1 stop8h 39mUnited Airlines
Sat 3/82:41 pmBOS - SEA
2 stops10h 38mUnited Airlines
Deal found 2/19$243
This Southwest deal was found by Cheapflights users on 2/20. 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.
Thu 3/69:05 amSEA - BOS
1 stop11h 45mSouthwest
Tue 3/116:20 amBOS - SEA
2 stops13h 40mSouthwest
Deal found 2/20$328

Find flights from Seattle to Falmouth within your budget

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 February 20, 2025.

Fly from

Seattle

Fly to

Falmouth

Route

Depart

Return

Price

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 4/2

11:30 pm-7:52 am

Nonstop5h 22m

Boston Logan Intl

Tue 4/8

5:30 pm-8:54 pm

Nonstop6h 24m

$149

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 3/19

11:30 pm-7:52 am

Nonstop5h 22m

Boston Logan Intl

Mon 3/24

5:30 pm-8:54 pm

Nonstop6h 24m

$157

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 3/11

7:57 pm-11:20 am

2 stops12h 23m

Boston Logan Intl

Mon 3/17

1:56 pm-7:02 pm

3 stops32h 06m

$162

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 3/30

11:55 pm-8:20 am

Nonstop5h 25m

Boston Logan Intl

Sat 4/5

7:14 pm-10:42 pm

Nonstop6h 28m

$177

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 4/1

10:00 pm-9:21 am

1 stop8h 21m

Boston Logan Intl

Tue 4/8

5:00 am-10:15 am

1 stop8h 15m

$184

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 3/3

11:30 pm-7:44 am

Nonstop5h 14m

Boston Logan Intl

Wed 3/5

12:15 pm-11:46 am

2 stops26h 31m

$190

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 3/21

3:35 pm-11:55 pm

Nonstop5h 20m

Boston Logan Intl

Sun 4/6

7:15 am-10:36 am

Nonstop6h 21m

$227

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 3/5

11:20 pm-10:59 am

1 stop8h 39m

Boston Logan Intl

Sat 3/8

2:41 pm-10:19 pm

2 stops10h 38m

$243

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 3/6

9:05 am-11:50 pm

1 stop11h 45m

Boston Logan Intl

Tue 3/11

6:20 am-5:00 pm

2 stops13h 40m

$328

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Fri 2/28

11:10 pm-9:41 am

1 stop7h 31m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 18 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.

Travel insights for flights from Seattle to Falmouth

Get recent, data-driven insights about flights from Seattle to Falmouth including ideal travel times, pricing trends, and more.

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 February 14, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Falmouth, you should look to book at least 80 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 February 20, 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 February 20, 2025.

The most flights from SEA to FM5 are scheduled on a Monday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 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 February 20, 2025.
See what other customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Boarding

8.2

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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. 9 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.

  • 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 $99 on American Airlines. Other airlines that offer cheap prices include Spirit Airlines from $103 and Alaska Airlines from $109 one-way.

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

    Consider EL AL (92%), Qatar Airways (91%) or China Eastern (90%) 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 $870, our data indicates the cheapest price to be $98. The most popular route (Seattle/Tacoma Intl - Boston Logan Intl), is priced around $157.

  • 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.

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$135Average$572FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$145Average$277FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$176Average$379FlexibilityNo cancel feeOn-time83%
DeltaCheapest$178Average$416FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$224Average$483FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$228Average$440FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$236Average$418FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$416Average$541FlexibilityNo cancel feeOn-time63%
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