$161+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
Jul 10 — Jul 171
Round-trip
1 adult, Economy
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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 September or October, booked 70 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday
Cheap flight deals from Seattle to Falmouth
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to FalmouthExplore 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 June 10, 2026.
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 June 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 6/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:19 pm
SEA
- BOS
1 stop10h 14m
JetBlue
Tue 7/147:29 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/7![JetBlue logo]()
$310
This Cheapflightsfares deal was found by Cheapflights users on 6/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Wed 10/76:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Deal found 6/7![JetBlue logo]()
$312
This JetBlue deal was found by Cheapflights users on 6/7. 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.
Tue 7/710:19 pm
SEA
- BOS
1 stop10h 14m
JetBlue
Mon 7/207:29 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/7![JetBlue logo]()
$315
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2210:19 pm
SEA
- BOS
1 stop10h 07m
JetBlue
Tue 8/117:24 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/9![JetBlue logo]()
$316
This Delta deal was found by Cheapflights users on 6/8. 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.
Tue 9/153:55 pm
SEA
- BOS
Nonstop5h 27m
Delta
Wed 9/167:35 pm
BOS
- SEA
Nonstop6h 15m
Delta
Deal found 6/8![Delta logo]()
$317
This Orbitz deal was found by Cheapflights users on 6/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:06 pm
SEA
- BOS
Nonstop5h 33m
Multiple Airlines
Sat 10/31:00 pm
BOS
- SEA
1 stop10h 42m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 9/165:20 am
SEA
- BOS
2 stops10h 15m
Southwest
Sun 9/205:20 am
BOS
- SEA
1 stop11h 20m
Southwest
Deal found 6/8![Southwest logo]()
$320
This JetBlue deal was found by Cheapflights users on 6/8. 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.
Wed 9/239:40 pm
SEA
- BOS
1 stop10h 06m
JetBlue
Thu 10/16:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Deal found 6/8![JetBlue logo]()
$321
This CheapOair deal was found by Cheapflights users on 6/10. 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.
Tue 8/2510:04 am
SEA
- BOS
1 stop17h 05m
Alaska Airlines
Tue 9/17:59 pm
BOS
- SEA
Nonstop6h 13m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 6/9. 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.
Mon 8/107:25 pm
SEA
- BOS
2 stops11h 30m
Southwest
Mon 8/245:25 am
BOS
- SEA
1 stop11h 30m
Southwest
Deal found 6/9![Southwest logo]()
$323
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:15 pm
SEA
- BOS
1 stop9h 31m
JetBlue
Fri 10/236:59 pm
BOS
- SEA
Nonstop6h 39m
JetBlue
Deal found 6/8![JetBlue logo]()
$325
This JetBlue deal was found by Cheapflights users on 6/8. 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.
Wed 9/1611:55 pm
SEA
- BOS
Nonstop5h 24m
JetBlue
Sat 9/191:00 pm
BOS
- SEA
1 stop10h 42m
JetBlue
Deal found 6/8![JetBlue logo]()
$326
Best flights from Seattle to FalmouthDiscover carefully curated flight deals from Seattle to Falmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 10, 2026.
Discover carefully curated flight deals from Seattle to Falmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 10, 2026.
This Southwest deal was found by Cheapflights users on 6/7. 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.
Wed 7/2211:05 pm
SEA
- BOS
2 stops10h 05m
Southwest
Tue 7/285:50 am
BOS
- SEA
2 stops11h 55m
Southwest
Deal found 6/7![Southwest logo]()
$352
This JetBlue deal was found by Cheapflights users on 6/7. 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 7/511:45 am
SEA
- BOS
Nonstop5h 28m
JetBlue
Mon 7/207:29 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/7![JetBlue logo]()
$374
This Delta deal was found by Cheapflights users on 6/8. 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.
Wed 6/2411:10 am
SEA
- BOS
Nonstop5h 26m
Delta
Tue 6/307:45 am
BOS
- SEA
Nonstop6h 16m
Delta
Deal found 6/8![Delta logo]()
$412
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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 10/234:50 pm
SEA
- BOS
1 stop9h 31m
Alaska Airlines
Wed 10/287:50 am
BOS
- SEA
1 stop10h 27m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 7/811:05 pm
SEA
- BOS
1 stop8h 50m
Southwest
Wed 7/155:30 pm
BOS
- SEA
1 stop9h 55m
Southwest
Deal found 6/8![Southwest logo]()
$352
This JetBlue deal was found by Cheapflights users on 6/6. 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.
Fri 7/310:28 pm
SEA
- BOS
1 stop11h 27m
JetBlue
Tue 7/77:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 6/6![JetBlue logo]()
$380
This Southwest deal was found by Cheapflights users on 6/5. 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.
Wed 7/2211:05 pm
SEA
- BOS
2 stops10h 05m
Southwest
Mon 7/271:25 pm
BOS
- SEA
2 stops11h 25m
Southwest
Deal found 6/5![Southwest logo]()
$382
This Alaska Airlines deal was found by Cheapflights users on 6/5. 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.
Thu 9/104:59 pm
SEA
- BOS
1 stop9h 50m
Alaska Airlines
Sun 9/209:33 am
BOS
- SEA
1 stop9h 26m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$427
This JetBlue deal was found by Cheapflights users on 6/9. 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.
Wed 7/111:45 am
SEA
- BOS
Nonstop5h 28m
JetBlue
Mon 7/67:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 6/9![JetBlue logo]()
$425
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 7/295:00 am
SEA
- BOS
1 stop8h 05m
Southwest
Mon 8/37:55 am
BOS
- SEA
2 stops16h 35m
Southwest
Deal found 6/8![Southwest logo]()
$408
This Southwest deal was found by Cheapflights users on 6/6. 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 7/37:20 pm
SEA
- BOS
2 stops9h 45m
Southwest
Wed 7/812:50 pm
BOS
- SEA
2 stops10h 40m
Southwest
Deal found 6/6![Southwest logo]()
$427
Last-minute flights from Seattle to FalmouthDiscover last-minute flight deals from Seattle to Falmouth. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Falmouth. Data last updated June 10, 2026 and is based on user searches.
This JetBlue deal was found by Cheapflights users on 6/9. 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.
Fri 7/310:28 pm
SEA
- BOS
1 stop11h 27m
JetBlue
Sat 7/117:01 pm
BOS
- SEA
Nonstop6h 30m
JetBlue
Deal found 6/9![JetBlue logo]()
$321
This Delta deal was found by Cheapflights users on 6/7. 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.
Sat 7/47:29 am
SEA
- BOS
Nonstop5h 31m
Delta
Wed 7/87:29 pm
BOS
- SEA
Nonstop6h 33m
Delta
Deal found 6/7![Delta logo]()
$317
This lol.travel deal was found by Cheapflights users on 6/7. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/411:44 pm
SEA
- BOS
Nonstop5h 16m
JetBlue
Sat 7/117:01 pm
BOS
- SEA
Nonstop6h 30m
JetBlue
Deal found 6/7![JetBlue logo]()
$322
This flygcity.se deal was found by Cheapflights users on 6/6. 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 flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/611:45 am
SEA
- BOS
Nonstop5h 28m
JetBlue
Wed 7/157:29 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/6![JetBlue logo]()
$312
This JetBlue deal was found by Cheapflights users on 6/7. 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.
Tue 7/710:19 pm
SEA
- BOS
1 stop10h 14m
JetBlue
Mon 7/207:29 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/7![JetBlue logo]()
$315
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/710:35 pm
SEA
- BOS
1 stop8h 20m
American Airlines
Tue 7/144:46 pm
BOS
- SEA
1 stop9h 14m
American Airlines
Deal found 6/9![American Airlines logo]()
$328
This Cheapflightsfares deal was found by Cheapflights users on 6/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:19 pm
SEA
- BOS
1 stop10h 14m
JetBlue
Tue 7/147:29 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/7![JetBlue logo]()
$310
This Southwest deal was found by Cheapflights users on 6/5. 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.
Wed 7/811:05 pm
SEA
- BOS
1 stop8h 50m
Southwest
Tue 7/285:00 am
BOS
- SEA
1 stop10h 05m
Southwest
Deal found 6/5![Southwest logo]()
$327
This JetBlue deal was found by Cheapflights users on 6/9. 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.
Wed 7/810:19 pm
SEA
- BOS
1 stop10h 14m
JetBlue
Wed 7/157:10 am
BOS
- SEA
Nonstop6h 23m
JetBlue
Deal found 6/9![JetBlue logo]()
$332
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2210:19 pm
SEA
- BOS
1 stop10h 07m
JetBlue
Tue 8/117:24 pm
BOS
- SEA
Nonstop6h 25m
JetBlue
Deal found 6/9![JetBlue logo]()
$316
One-way flights from Seattle to FalmouthSearch for one-way flight options from Seattle to Falmouth. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
Search for one-way flight options from Seattle to Falmouth. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This Super.com deal was found by Cheapflights users on 6/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:19 pm
SEA
- BOS
1 stop10h 14m
JetBlue
Deal found 6/5![JetBlue logo]()
$161
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3010:28 pm
SEA
- BOS
1 stop10h 07m
JetBlue
Deal found 6/8![JetBlue logo]()
$163
This Southwest deal was found by Cheapflights users on 6/5. 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.
Sat 8/299:40 am
SEA
- BOS
1 stop7h 10m
Southwest
Deal found 6/5![Southwest logo]()
$164
This Southwest deal was found by Cheapflights users on 6/7. 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.
Mon 11/25:30 am
SEA
- BOS
1 stop10h 20m
Southwest
Deal found 6/7![Southwest logo]()
$165
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:28 pm
SEA
- BOS
1 stop11h 27m
JetBlue
Deal found 6/10![JetBlue logo]()
$168
This Southwest deal was found by Cheapflights users on 6/7. 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.
Wed 8/1211:00 pm
SEA
- BOS
2 stops10h 30m
Southwest
Deal found 6/7![Southwest logo]()
$169
This Super.com deal was found by Cheapflights users on 6/7. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:45 am
SEA
- BOS
Nonstop5h 28m
JetBlue
Deal found 6/7![JetBlue logo]()
$171
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Tue 6/2311:00 pm
SEA
- BOS
1 stop9h 16m
United Airlines
Deal found 6/6![United Airlines logo]()
$172
This Faresmojo deal was found by Cheapflights users on 6/9. 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 Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1911:46 pm
SEA
- BOS
Nonstop5h 18m
JetBlue
Deal found 6/9![JetBlue logo]()
$175
Find flight deals from Seattle to Falmouth
Keep the following information in mind while searching for Seattle to Falmouth flight deals. Data was last updated June 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $310 (Cheapflightsfares) |
One-way from | $161 (Super.com) |
Popular in | December |
Cheapest in | September |
Average price | $467 |
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 June 10, 2026.
Use the filters below to find and compare flights from Seattle to Falmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 7/22
11:05 pm-12:10 pm
2 stops10h 05m
Boston Logan Intl
Tue 7/28
5:50 am-2:45 pm
2 stops11h 55m
$352
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 7/8
11:05 pm-10:55 am
1 stop8h 50m
Boston Logan Intl
Wed 7/15
5:30 pm-12:25 am
1 stop9h 55m
$352
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sun 7/5
11:45 am-8:13 pm
Nonstop5h 28m
Boston Logan Intl
Mon 7/20
7:29 pm-10:54 pm
Nonstop6h 25m
$374
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Fri 7/3
10:28 pm-12:55 pm
1 stop11h 27m
Boston Logan Intl
Tue 7/7
7:10 am-10:33 am
Nonstop6h 23m
$380
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 7/22
11:05 pm-12:10 pm
2 stops10h 05m
Boston Logan Intl
Mon 7/27
1:25 pm-9:50 pm
2 stops11h 25m
$382
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 7/29
5:00 am-4:05 pm
1 stop8h 05m
Boston Logan Intl
Mon 8/3
7:55 am-9:30 pm
2 stops16h 35m
$408
Quickest round-trip
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 6/24
11:10 am-7:36 pm
Nonstop5h 26m
Boston Logan Intl
Tue 6/30
7:45 am-11:01 am
Nonstop6h 16m
$412
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Fri 10/23
4:50 pm-5:21 am
1 stop9h 31m
Boston Logan Intl
Wed 10/28
7:50 am-3:17 pm
1 stop10h 27m
$422
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 7/1
11:45 am-8:13 pm
Nonstop5h 28m
Boston Logan Intl
Mon 7/6
7:10 am-10:33 am
Nonstop6h 23m
$425
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Thu 9/10
4:59 pm-5:49 am
1 stop9h 50m
Boston Logan Intl
Sun 9/20
9:33 am-3:59 pm
1 stop9h 26m
$427
Showing 1-10 of 22 resultsSorted by cheapest first
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.
SEA-BOS
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
SEA-FM5
SEA-BOS
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 June 10, 2026.
It’s optimal to fly from Seattle to Falmouth at noon. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the morning.
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 June 10, 2026.
The most flights from SEA to FM5 are scheduled on a Wednesday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).
How much does it cost to fly round-trip from Seattle to Falmouth?
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 June 8, 2026.
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. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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 June 10, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andHawaiian 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.
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
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.
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Seattle and Falmouth flights
Browse other Seattle and Falmouth flight options. Last updated on June 10, 2026.
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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 June 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$299 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$141 | Average$347 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$170 | Average$416 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$178 | Average$402 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$194 | Average$326 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$196 | Average$394 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$230 | Average$460 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$233 | Average$457 | FlexibilityNo cancel fee | On-time83% |