United Airlines Boston to Seattle Flights
Return flight: Seattle – Boston
Cheapflightsplus.com will find cheap United Airlines flights from Boston to Seattle. Compare airline ticket prices and book air tickets starting from $59 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of United Airlines, arrivals and departure details below.
Find Cheap Airfare Boston (MA) — Seattle (WA) by United Airlines
To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in june: one-way - $59, two-way – $101.
Direct flights
Check prices for return flight
Cheap Flights from Boston to Seattle by United Airlines
Look at the list of plane tickets for the most popular direct and connecting flights by United Airlines, their prices start from $59. The fastest nonstop flight takes 8h. The fastest connecting flight — 7h 54m.
| Price | Departure | Arrival | Flight Time | Airline | Flight |
|---|---|---|---|---|---|
| from $113 | 8:00 am Boston Logan | 4:16 pm Seattle Seattle-Tacoma Intl | 11h 16m | United Airlines | UA1007 |
| from $113 | 7:00 am Boston Logan | 12:00 pm Seattle Seattle-Tacoma Intl | 8h 0m | United Airlines | UA2180 |
| from $134 | 5:40 am Boston Logan | 11:22 am Seattle Seattle-Tacoma Intl | 8h 42m | United Airlines | UA389 |
| from $134 | 7:41 am Boston Logan | 1:20 pm Seattle Seattle-Tacoma Intl | 8h 39m | United Airlines | UA339 |
| from $356 | 3:55 pm Boston Logan | 1:14 am+1 день Seattle Seattle-Tacoma Intl | 12h 19m | United Airlines | UA351 |
| from $59 | 6:27 pm Boston Logan | 0:36 am+1 день Seattle Seattle-Tacoma Intl | 9h 9m layover 2h 11m - Chicago | United Airlines | UA1141 NK2948 |
| from $66 | 6:30 am Boston Logan | 1:27 pm Seattle Seattle-Tacoma Intl | 9h 57m layover 0h 41m - Chicago 0h 50m - Denver | United Airlines | UA447 UA2465 UA404 |
| from $66 | 3:10 pm Boston Logan | 10:23 pm Seattle Seattle-Tacoma Intl | 10h 13m layover 0h 53m - Washington D.C. 0h 50m - Chicago | United Airlines | UA216 UA210 UA593 |
| from $66 | 8:00 am Boston Logan | 3:26 pm Seattle Seattle-Tacoma Intl | 10h 26m layover 0h 53m - Newark 1h 2m - Chicago | United Airlines | UA251 UA2075 UA2091 |
| from $66 | 10:20 am Boston Logan | 5:49 pm Seattle Seattle-Tacoma Intl | 10h 29m layover 0h 41m - Chicago 1h 32m - Denver | United Airlines | UA1251 UA1823 UA1823 |
| from $66 | 8:11 am Boston Logan | 3:58 pm Seattle Seattle-Tacoma Intl | 10h 47m layover 1h 10m - Chicago 1h 9m - Denver | United Airlines | UA775 UA2314 UA1823 |
| from $66 | 10:20 am Boston Logan | 6:17 pm Seattle Seattle-Tacoma Intl | 10h 57m layover 0h 41m - Chicago 0h 45m - San Francisco | United Airlines | UA1251 UA638 UA447 |
Show All Flights
*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 05/22/2024
United Airlines Flight Schedule Boston to Seattle
Below is a detailed 2024 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
| Departure | Arrival | Flight Details | Flight Time | Price |
|---|---|---|---|---|
|
3:55 pm — 1:14 am
+1 day
|
3:55 pm — 1:14 am
UA351
United Airlines
Boston — Seattle
|
12h 19m |
Find flight
from$356 |
|
|
5:40 am — 11:22 am
|
5:40 am — 11:22 am
UA389
United Airlines
Boston — Seattle
|
8h 42m |
Find flight
from$134 |
|
|
7:00 am — 12:00 pm
|
7:00 am — 12:00 pm
UA2180
United Airlines
Boston — Seattle
|
8h |
Find flight
from$113 |
|
|
7:41 am — 1:20 pm
|
7:41 am — 1:20 pm
UA339
United Airlines
Boston — Seattle
|
8h 39m |
Find flight
from$134 |
|
|
8:00 am — 4:16 pm
|
8:00 am — 4:16 pm
UA1007
United Airlines
Boston — Seattle
|
11h 16m |
Find flight
from$113 |
|
|
12:05 pm — 7:39 pm
|
12:05 pm — 2:29 pm
UA652
United Airlines
Boston — Denver
3h 20m stop
5:49 pm — 7:39 pm
UA1592
United Airlines
Denver — Seattle
|
10h 34m including layover |
Find flight
from$220 |
|
|
12:05 pm — 7:39 pm
|
12:05 pm — 2:29 pm
UA652
United Airlines
Boston — Denver
3h 20m stop
5:49 pm — 7:39 pm
UA1051
United Airlines
Denver — Seattle
|
10h 34m including layover |
Find flight
from$283 |
|
|
1:00 pm — 6:40 pm
|
1:00 pm — 2:44 pm
UA1564
United Airlines
Boston — Chicago
1h 21m stop
4:05 pm — 6:40 pm
UA1697
United Airlines
Chicago — Seattle
|
8h 40m including layover |
Find flight
from$67 |
|
|
1:00 pm — 10:03 pm
|
1:00 pm — 2:44 pm
UA1564
United Airlines
Boston — Chicago
4h 51m stop
7:35 pm — 10:03 pm
UA262
United Airlines
Chicago — Seattle
|
12h 3m including layover |
Find flight
from$71 |
|
|
3:00 pm — 10:03 pm
|
3:00 pm — 4:50 pm
UA2283
United Airlines
Boston — Chicago
2h 45m stop
7:35 pm — 10:03 pm
UA262
United Airlines
Chicago — Seattle
|
10h 3m including layover |
Find flight
from$67 |
|
|
4:30 pm — 10:03 pm
|
4:30 pm — 6:17 pm
UA503
United Airlines
Boston — Chicago
1h 18m stop
7:35 pm — 10:03 pm
UA262
United Airlines
Chicago — Seattle
|
8h 33m including layover |
Find flight
from$67 |
|
|
6:27 pm — 0:36 am
+1 day
|
6:27 pm — 8:10 pm
UA1141
United Airlines
Boston — Chicago
2h 11m stop
10:21 pm — 0:36 am
NK2948
Spirit Airlines
Chicago — Seattle
|
9h 9m including layover |
Find flight
from$59 |
|
|
9:40 am — 3:15 pm
|
9:40 am — 11:15 am
UA1157
United Airlines
Boston — Washington D.C.
1h 21m stop
12:36 pm — 3:15 pm
UA1149
United Airlines
Washington D.C. — Seattle
|
8h 35m including layover |
Find flight
from$104 |
|
|
9:45 am — 6:03 pm
|
9:45 am — 11:02 am
UA1928
United Airlines
Boston — Newark
3h 58m stop
3:00 pm — 6:03 pm
UA1932
United Airlines
Newark — Seattle
|
11h 18m including layover |
Find flight
from$129 |
|
|
10:20 am — 5:49 pm
|
10:20 am — 12:04 pm
UA1251
United Airlines
Boston — Chicago
41m stop
12:45 pm — 2:23 pm
UA1823
United Airlines
Chicago — Denver
1h 32m stop
3:55 pm — 5:49 pm
UA1823
United Airlines
Denver — Seattle
|
10h 29m including layover |
Find flight
from$66 |
|
|
10:20 am — 6:17 pm
|
10:20 am — 12:04 pm
UA1251
United Airlines
Boston — Chicago
41m stop
12:45 pm — 3:25 pm
UA638
United Airlines
Chicago — San Francisco
45m stop
4:10 pm — 6:17 pm
UA447
United Airlines
San Francisco — Seattle
|
10h 57m including layover |
Find flight
from$66 |
|
|
11:25 am — 8:00 am
+1 day
|
11:25 am — 1:11 pm
UA1564
United Airlines
Boston — Chicago
7h 8m stop
8:19 pm — 10:13 pm
F9413
Frontier Airlines
Chicago — Denver
7h 47m stop
6:00 am — 8:00 am
F9143
Frontier Airlines
Denver — Seattle
|
23h 35m including layover |
Find flight
from$65 |
|
|
11:30 am — 1:01 pm
+1 day
|
11:30 am — 1:10 pm
UA1564
United Airlines
Boston — Chicago
16h 50m stop
6:00 am — 7:45 am
F9411
Frontier Airlines
Chicago — Denver
3h 14m stop
10:59 am — 1:01 pm
F9145
Frontier Airlines
Denver — Seattle
|
28h 31m including layover |
Find flight
from$60 |
|
|
2:00 pm — 10:03 pm
|
2:00 pm — 3:38 pm
UA2248
United Airlines
Boston — Newark
1h 21m stop
4:59 pm — 6:46 pm
UA1180
United Airlines
Newark — Chicago
49m stop
7:35 pm — 10:03 pm
UA262
United Airlines
Chicago — Seattle
|
11h 3m including layover |
Find flight
from$86 |
|
|
2:16 pm — 10:03 pm
|
2:16 pm — 4:04 pm
UA511
United Airlines
Boston — Washington D.C.
1h 11m stop
5:15 pm — 6:33 pm
UA1924
United Airlines
Washington D.C. — Chicago
1h 2m stop
7:35 pm — 10:03 pm
UA262
United Airlines
Chicago — Seattle
|
10h 47m including layover |
Find flight
from$86 |
|
|
3:10 pm — 10:23 pm
|
3:10 pm — 4:50 pm
UA216
United Airlines
Boston — Washington D.C.
53m stop
5:43 pm — 6:55 pm
UA210
United Airlines
Washington D.C. — Chicago
50m stop
7:45 pm — 10:23 pm
UA593
United Airlines
Chicago — Seattle
|
10h 13m including layover |
Find flight
from$66 |
|
|
4:30 pm — 8:31 am
+1 day
|
4:30 pm — 6:17 pm
UA503
United Airlines
Boston — Chicago
2h 32m stop
8:49 pm — 10:46 pm
F9413
Frontier Airlines
Chicago — Denver
7h 39m stop
6:25 am — 8:31 am
F9145
Frontier Airlines
Denver — Seattle
|
19h 1m including layover |
Find flight
from$74 |
|
|
5:00 am — 1:12 pm
|
5:00 am — 6:53 am
UA774
United Airlines
Boston — Chicago
1h 17m stop
8:10 am — 9:45 am
UA2465
United Airlines
Chicago — Denver
1h 33m stop
11:18 am — 1:12 pm
UA690
United Airlines
Denver — Seattle
|
11h 12m including layover |
Find flight
from$66 |
|
|
5:00 pm — 1:09 pm
+1 day
|
5:00 pm — 6:45 pm
UA2498
United Airlines
Boston — Chicago
11h 25m stop
6:10 am — 7:55 am
F9411
Frontier Airlines
Chicago — Denver
3h 12m stop
11:07 am — 1:09 pm
F9145
Frontier Airlines
Denver — Seattle
|
23h 9m including layover |
Find flight
from$60 |
|
|
6:30 am — 5:26 pm
|
6:30 am — 8:14 am
UA447
United Airlines
Boston — Chicago
56m stop
9:10 am — 11:50 am
UA769
United Airlines
Chicago — San Francisco
3h 25m stop
3:15 pm — 5:26 pm
UA281
United Airlines
San Francisco — Seattle
|
13h 56m including layover |
Find flight
from$66 |
|
|
7:00 am — 3:26 pm
|
7:00 am — 8:20 am
UA2180
United Airlines
Boston — Newark
1h 53m stop
10:13 am — 11:58 am
UA2075
United Airlines
Newark — Chicago
1h 2m stop
1:00 pm — 3:26 pm
UA2091
United Airlines
Chicago — Seattle
|
11h 26m including layover |
Find flight
from$66 |
|
|
7:02 am — 5:49 pm
|
7:02 am — 9:02 am
UA449
United Airlines
Boston — Chicago
3h 43m stop
12:45 pm — 2:23 pm
UA1823
United Airlines
Chicago — Denver
1h 32m stop
3:55 pm — 5:49 pm
UA1823
United Airlines
Denver — Seattle
|
13h 47m including layover |
Find flight
from$66 |
|
|
8:11 am — 5:26 pm
|
8:11 am — 10:05 am
UA775
United Airlines
Boston — Chicago
55m stop
11:00 am — 1:41 pm
UA1998
United Airlines
Chicago — San Francisco
1h 34m stop
3:15 pm — 5:26 pm
UA281
United Airlines
San Francisco — Seattle
|
12h 15m including layover |
Find flight
from$66 |
|
|
8:15 am — 0:01 am
+1 day
|
8:15 am — 9:56 am
UA775
United Airlines
Boston — Chicago
3h 59m stop
1:55 pm — 3:42 pm
F9415
Frontier Airlines
Chicago — Denver
6h 19m stop
10:01 pm — 0:01 am
F9143
Frontier Airlines
Denver — Seattle
|
18h 46m including layover |
Find flight
from$65 |
|
*Departure and arrival times are local. Last updated on 05/22/2024
Flight Information
There are 5 flights by United Airlines from Boston to Seattle every week with departures from Logan, Boston City Heliport, Boston RT128 Rail, Boston South Rail. All flights arrive at Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB.
Departures start from 10:07 am to 9:47 am. Nonstop flight is 7h 54m. The time difference between Boston and Seattle is 3h.
- The fastest flight 7h 54m
- Average flight time 8h 42m
- The earliest flight 10:07 am
- The latest flight 9:47 am
- Distance 2489 ml
The cheapest flight by United Airlines that our users were able to find is $59. This airfare is economy class on one-way UA1141 flight for October 7, 2020 leaving Logan in Boston at 6:27 pm, it includes all taxes and additional fees.
United Airlines Airplanes on the Route
List of the most popular United Airlines airplanes flying from Boston to Seattle:
- Airbus A319from $66Find
- Boeing 737-700from $66Find
- Boeing 737-800from $66Find
- Boeing 737-900from $66Find
- Airbus A320from $66Find
- Airbus A320-100/200from $77Find
- Boeing 757from $129Find
- Boeing 757-200from $129Find
- Bombardier CRJ 700from $258Find
Other Popular Airlines on the Route
Besides United Airlines there are other 8 airline carriers between Boston and Seattle. Please review schedules and prices from the most popular airlines to find the best airfare deals from Boston to Seattle.
Nonstop flights
There are 24 direct flights every day from Boston. Airlines and fares are below:
- from $87Find
- from $102Find
- from $93Find
See more direct flights
Connecting Flights
List of flights with layovers (1 and more stops):
- from $68Find
- from $87Find
- from $60Find
- from $90Find
- from $47Find
- F9 - Frontier Airlinesfrom $85Find
- WN - Southwest Airlinesfrom $94Find
- TK - Turkish Airlinesfrom $1001Find
See more connecting flights
How to book an air 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 airfare.
- 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.
To find a plane ticket, please select dates.