Cheap Flights from Boston, MA to Seattle, WA from $47

One way Round trip

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On Cheapflightsplus.com you will find 21 direct and 222 connecting flights from Boston to Seattle. You can compare airfare deals from 9 airlines and multiple travel sites from $47, book and save on cheap plane tickets and last minute offers. Also check out BOS-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Boston to Seattle Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $47 (one-way), $81 (round-trip).

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Best Flights from Boston to Seattle Today

Take a look at the list of non stop flights and flights with layovers from Boston to Seattle with the lowest price of $47. The fastest direct flight takes 6h and the fastest connecting – 7h 26m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $87 Find flight	07:15 Boston Logan	10:25 Seattle Seattle-Tacoma Intl	6h 10m	Alaska Airlines	AS25
from $87 Find flight	10:00 Boston Logan	13:20 Seattle Seattle-Tacoma Intl	6h 20m	Alaska Airlines	AS273
from $87 Find flight	16:45 Boston Logan	20:09 Seattle Seattle-Tacoma Intl	6h 24m	Alaska Airlines	AS15
from $87 Find flight	19:55 Boston Logan	23:15 Seattle Seattle-Tacoma Intl	6h 20m	Alaska Airlines	AS253
from $93 Find flight	06:50 Boston Logan	10:34 Seattle Seattle-Tacoma Intl	6h 44m	Delta Air Lines Inc.	DL613
from $93 Find flight	11:00 Boston Logan	14:34 Seattle Seattle-Tacoma Intl	6h 34m	Delta Air Lines Inc.	DL626
from $93 Find flight	17:15 Boston Logan	21:01 Seattle Seattle-Tacoma Intl	6h 46m	Delta Air Lines Inc.	DL1485
from $93 Find flight	19:30 Boston Logan	23:16 Seattle Seattle-Tacoma Intl	6h 46m	Delta Air Lines Inc.	DL742
from $94 Find flight	06:50 Boston Logan	10:34 Seattle Seattle-Tacoma Intl	6h 44m	Delta Air Lines Inc.	DL325
from $94 Find flight	07:00 Boston Logan	10:36 Seattle Seattle-Tacoma Intl	6h 36m	Delta Air Lines Inc.	DL331
from $47 Find flight	17:15 Boston Logan	00:32+1 день Seattle Seattle-Tacoma Intl	10h 17m layover 1h 29m - Las Vegas	Spirit Airlines	NK641 NK1623
from $52 Find flight	13:55 Boston Logan	21:25 Seattle Seattle-Tacoma Intl	10h 30m layover 3h 12m - Baltimore	Spirit Airlines	NK2997 NK2914

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on May 01, 2024

Flight Schedule Boston (Massachusetts) to Seattle (Washington)

Full flight schedule will help you in detecting at what time planes fly from Boston to Seattle. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
06:50 — 10:34	06:50 — 10:34 DL613 Delta Air Lines Inc. Boston — Seattle	6h 44m	Find flight from$93
06:50 — 10:34	06:50 — 10:34 DL325 Delta Air Lines Inc. Boston — Seattle	6h 44m	Find flight from$94
06:50 — 10:03	06:50 — 10:03 B62397 JetBlue Boston — Seattle	6h 13m	Find flight from$102
07:00 — 10:36	07:00 — 10:36 DL331 Delta Air Lines Inc. Boston — Seattle	6h 36m	Find flight from$94
07:00 — 12:00	07:00 — 12:00 UA2180 United Airlines Boston — Seattle	8h	Find flight from$113
07:10 — 10:20	07:10 — 10:20 DL379 Delta Air Lines Inc. Boston — Seattle	6h 10m	Find flight from$94
07:15 — 10:25	07:15 — 10:25 AS25 Alaska Airlines Boston — Seattle	6h 10m	Find flight from$87
08:00 — 16:16	08:00 — 16:16 UA1007 United Airlines Boston — Seattle	11h 16m	Find flight from$113
09:00 — 12:00	09:00 — 12:00 AS33 Alaska Airlines Boston — Seattle	6h	Find flight from$191
10:00 — 13:20	10:00 — 13:20 AS273 Alaska Airlines Boston — Seattle	6h 20m	Find flight from$87
11:00 — 14:34	11:00 — 14:34 DL626 Delta Air Lines Inc. Boston — Seattle	6h 34m	Find flight from$93
11:00 — 14:34	11:00 — 14:34 DL332 Delta Air Lines Inc. Boston — Seattle	6h 34m	Find flight from$94
11:00 — 14:40	11:00 — 14:40 DL334 Delta Air Lines Inc. Boston — Seattle	6h 40m	Find flight from$94
16:45 — 20:09	16:45 — 20:09 AS15 Alaska Airlines Boston — Seattle	6h 24m	Find flight from$87
17:10 — 20:25	17:10 — 20:25 DL659 Delta Air Lines Inc. Boston — Seattle	6h 15m	Find flight from$94
17:15 — 21:01	17:15 — 21:01 DL1485 Delta Air Lines Inc. Boston — Seattle	6h 46m	Find flight from$93
17:15 — 20:58	17:15 — 20:58 DL305 Delta Air Lines Inc. Boston — Seattle	6h 43m	Find flight from$94
18:56 — 22:20	18:56 — 22:20 B6197 JetBlue Boston — Seattle	6h 24m	Find flight from$102
19:30 — 23:16	19:30 — 23:16 DL742 Delta Air Lines Inc. Boston — Seattle	6h 46m	Find flight from$93
19:30 — 23:06	19:30 — 23:06 DL304 Delta Air Lines Inc. Boston — Seattle	6h 36m	Find flight from$94
19:55 — 23:15	19:55 — 23:15 AS253 Alaska Airlines Boston — Seattle	6h 20m	Find flight from$87
05:00 — 10:18	05:00 — 06:53 UA774 United Airlines Boston — Chicago 52m stop 07:45 — 10:18 UA1757 United Airlines Chicago — Seattle	8h 18m including layover	Find flight from$67
13:53 — 10:37 +1 day	13:53 — 16:31 NK2223 Spirit Airlines Boston — Las Vegas 15h 29m stop 08:00 — 10:37 NK486 Spirit Airlines Las Vegas — Seattle	23h 44m including layover	Find flight from$63
13:55 — 21:25	13:55 — 15:23 NK2997 Spirit Airlines Boston — Baltimore 3h 12m stop 18:35 — 21:25 NK2914 Spirit Airlines Baltimore — Seattle	10h 30m including layover	Find flight from$52
16:30 — 22:03	16:30 — 18:17 UA503 United Airlines Boston — Chicago 1h 18m stop 19:35 — 22:03 UA262 United Airlines Chicago — Seattle	8h 33m including layover	Find flight from$67
17:15 — 00:32 +1 day	17:15 — 20:16 NK641 Spirit Airlines Boston — Las Vegas 1h 29m stop 21:45 — 00:32 NK1623 Spirit Airlines Las Vegas — Seattle	10h 17m including layover	Find flight from$47
17:15 — 08:50 +1 day	17:15 — 20:16 NK641 Spirit Airlines Boston — Las Vegas 9h 44m stop 06:00 — 08:50 F92167 Frontier Airlines Las Vegas — Seattle	18h 35m including layover	Find flight from$59
18:27 — 00:36 +1 day	18:27 — 20:10 UA1141 United Airlines Boston — Chicago 2h 11m stop 22:21 — 00:36 NK2948 Spirit Airlines Chicago — Seattle	9h 9m including layover	Find flight from$59
05:00 — 13:12	05:00 — 06:53 UA774 United Airlines Boston — Chicago 1h 17m stop 08:10 — 09:45 UA2465 United Airlines Chicago — Denver 1h 33m stop 11:18 — 13:12 UA690 United Airlines Denver — Seattle	11h 12m including layover	Find flight from$66
06:30 — 13:27	06:30 — 08:14 UA447 United Airlines Boston — Chicago 41m stop 08:55 — 10:35 UA2465 United Airlines Chicago — Denver 50m stop 11:25 — 13:27 UA404 United Airlines Denver — Seattle	9h 57m including layover	Find flight from$66
06:30 — 15:35	06:30 — 08:14 UA447 United Airlines Boston — Chicago 56m stop 09:10 — 11:50 UA769 United Airlines Chicago — San Francisco 1h 25m stop 13:15 — 15:35 UA1007 United Airlines San Francisco — Seattle	12h 5m including layover	Find flight from$66
07:00 — 18:32 +1 day	07:00 — 08:57 NK2855 Spirit Airlines Boston — Chicago 21h 33m stop 06:30 — 08:20 F9411 Frontier Airlines Chicago — Denver 8h 14m stop 16:34 — 18:32 F9145 Frontier Airlines Denver — Seattle	38h 32m including layover	Find flight from$52
07:00 — 00:01 +1 day	07:00 — 08:57 NK2855 Spirit Airlines Boston — Chicago 3h 25m stop 12:22 — 14:05 F9415 Frontier Airlines Chicago — Denver 7h 56m stop 22:01 — 00:01 F9143 Frontier Airlines Denver — Seattle	20h 1m including layover	Find flight from$57
08:00 — 15:26	08:00 — 09:20 UA251 United Airlines Boston — Newark 53m stop 10:13 — 11:58 UA2075 United Airlines Newark — Chicago 1h 2m stop 13:00 — 15:26 UA2091 United Airlines Chicago — Seattle	10h 26m including layover	Find flight from$66
08:15 — 00:01 +1 day	08:15 — 09:56 UA775 United Airlines Boston — Chicago 3h 59m stop 13:55 — 15:42 F9415 Frontier Airlines Chicago — Denver 6h 19m stop 22:01 — 00:01 F9143 Frontier Airlines Denver — Seattle	18h 46m including layover	Find flight from$65
10:20 — 17:49	10:20 — 12:04 UA1251 United Airlines Boston — Chicago 41m stop 12:45 — 14:23 UA1823 United Airlines Chicago — Denver 1h 32m stop 15:55 — 17:49 UA1823 United Airlines Denver — Seattle	10h 29m including layover	Find flight from$66
10:20 — 18:17	10:20 — 12:04 UA1251 United Airlines Boston — Chicago 41m stop 12:45 — 15:25 UA638 United Airlines Chicago — San Francisco 45m stop 16:10 — 18:17 UA447 United Airlines San Francisco — Seattle	10h 57m including layover	Find flight from$66
11:30 — 13:01 +1 day	11:30 — 13:10 UA1564 United Airlines Boston — Chicago 16h 50m stop 06:00 — 07:45 F9411 Frontier Airlines Chicago — Denver 3h 14m stop 10:59 — 13:01 F9145 Frontier Airlines Denver — Seattle	28h 31m including layover	Find flight from$60
11:53 — 10:34 +1 day	11:53 — 15:19 NK609 Spirit Airlines Boston — Miami 5h 11m stop 20:30 — 22:47 NK777 Spirit Airlines Miami — Las Vegas 8h 57m stop 07:44 — 10:34 F92167 Frontier Airlines Las Vegas — Seattle	25h 41m including layover	Find flight from$63
15:10 — 22:23	15:10 — 16:50 UA216 United Airlines Boston — Washington D.C. 53m stop 17:43 — 18:55 UA210 United Airlines Washington D.C. — Chicago 50m stop 19:45 — 22:23 UA593 United Airlines Chicago — Seattle	10h 13m including layover	Find flight from$66
15:44 — 13:09 +1 day	15:44 — 17:31 B62711 JetBlue Boston — Chicago 12h 39m stop 06:10 — 07:55 F9411 Frontier Airlines Chicago — Denver 3h 12m stop 11:07 — 13:09 F9145 Frontier Airlines Denver — Seattle	24h 25m including layover	Find flight from$60
19:27 — 21:25 +1 day	19:27 — 22:53 NK615 Spirit Airlines Boston — Miami 10h 30m stop 09:23 — 11:56 NK2074 Spirit Airlines Miami — Baltimore 6h 39m stop 18:35 — 21:25 NK2914 Spirit Airlines Baltimore — Seattle	28h 58m including layover	Find flight from$58

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on May 1, 2024

Flight Information

Below we will explain in detail what the flights cost on the destination from Boston to Seattle depends on and how to choose the most interesting flight option for you.

Distance between Boston and Seattle is 4005 miles. Time difference between the cities is 3h. Airplanes depart 05:00 to 23:35 from 4 Boston airports and arrive 05:00 to 23:35 to 3 Seattle airports. Average flight time is 6h 34m.

The fastest flight 6h
Average flight time 6h 34m
The earliest flight 05:00
The latest flight 23:35
Distance 2489 ml

What is the lowest airfare Boston to Seattle?

The cheapest plane ticket found by our users is $47. This airfare is for economy class on one-way NK641 flight by Spirit Airlines for October 7, 2020 which leaves Logan in Boston at 17:15 am and arrives at Seattle Seattle-Tacoma Intl at 00:32.

Economy class

$47

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Business class

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First class

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Popular Airlines on the Route

The flight Boston — Seattle is served by 9 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by American Airlines - 34 departures per week at the price of from $ 68 . And the most expensive tickets are offered by Turkish Airlines airline - from $ 1409.

Direct flights

There are 21 nonstop flights on the route. The fastest direct flight is AS33 by Alaska Airlines takes 6h and the cheapest is NK641 by Spirit Airlines for $87.

AS - Alaska Airlines

from $87

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B6 - JetBlue

from $102

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DL - Delta Air Lines Inc.

from $93

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UA - United Airlines

from $113

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Connecting Flights

There are 222 flights with layovers on the route. The fastest connecting flight is DL956 by Delta Air Lines Inc. takes 7h 26m and the cheapest is NK641 by Spirit Airlines for $47.

AA - American Airlines

from $68

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AS - Alaska Airlines

from $87

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B6 - JetBlue

from $60

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DL - Delta Air Lines Inc.

from $90

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UA - United Airlines

from $59

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NK - Spirit Airlines

from $47

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F9 - Frontier Airlines

from $85

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WN - Southwest Airlines

from $94

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TK - Turkish Airlines

from $1001

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Airports

You can fly from Boston to Seattle from 4 airports (Boston City Heliport, Boston RT128 Rail, Boston South Rail, Logan).

Boston airports

Boston City Heliport-JBC

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Boston RT128 Rail-ZRU

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Boston South Rail-ZTO

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Logan-BOS

from $47
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Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

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Kenmore Air Harbor SPB-LKE

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Airplanes

There are flights to Seattle from Boston by 9 airlines that use 10 aircraft brands. They range from huge modern airplanes to small-sized.

Boeing 737-800

from $66

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Boeing 737-900

from $66

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Airbus A320

from $66

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Airbus A319

from $66

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Boeing 737-700

from $66

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Embraer 190

from $72

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Airbus A320-100/200

from $77

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Boeing 737-900 (winglets)

from $87

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Boeing 737-800 (winglets)

from $87

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Airbus A321

from $90

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Top Domestic Destinations from Boston

You may also consider searching for discounted plane tickets to some other popular places from Boston within United States.

Boston — Orlando

from $67

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Boston — Newark

from $73

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Boston — Minneapolis

from $54

Find
Boston — Chicago

from $59

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Boston — Los Angeles

from $62

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Boston — Las Vegas

from $63

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Boston — San Francisco

from $61

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Boston — New York

from $57

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Boston — Miami

from $56

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Boston — Louisville

from $69

Find

Top International Destinations from Boston

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Boston — Rome

from $77

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Boston — London

from $76

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Boston — Zurich

from $68

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Boston — Paris

from $76

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Boston — Manchester

from $68

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Boston — Dublin

from $54

Find
Boston — Athens

from $59

Find
Boston — Lisbon

from $66

Find
Boston — Barcelona

from $67

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Boston — Munich

from $74

Find

All flights from Boston | All flights to Seattle

How to book a plane ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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