Delta Air Lines Inc. Seattle to Boston Flights

Return flight: Boston – Seattle

Cheapflightsplus.com will find cheap Delta Air Lines Inc. flights from Seattle to Boston. Compare airline ticket prices and book air tickets starting from $148 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Delta Air Lines Inc., arrivals and departure details below.

Find Cheap Airfare Seattle (WA) — Boston (MA) by Delta Air Lines Inc.

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 march: one-way - $148, two-way – $254.
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Below is a detailed 2025 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
11:29 pm — 7:55 am
+1 day
11:29 pm — 7:55 am DL473 Delta Air Lines Inc.
Seattle — Boston
5h 26m
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from$148
7:30 am — 4:02 pm
7:30 am — 4:02 pm DL459 Delta Air Lines Inc.
Seattle — Boston
5h 32m
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from$148
12:05 pm — 11:57 pm
12:05 pm — 5:35 pm DL941 Delta Air Lines Inc.
Seattle — Minneapolis
2h 30m stop
8:05 pm — 11:57 pm DL2614 Delta Air Lines Inc.
Minneapolis — Boston
8h 52m
including layover
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from$303
1:35 pm — 11:59 pm
1:35 pm — 4:40 pm DL1120 Delta Air Lines Inc.
Seattle — Salt Lake City
45m stop
5:25 pm — 11:59 pm DL702 Delta Air Lines Inc.
Salt Lake City — Boston
7h 24m
including layover
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from$303
1:55 pm — 0:58 am
+1 day
1:55 pm — 9:43 pm DL554 Delta Air Lines Inc.
Seattle — Atlanta
42m stop
10:25 pm — 0:58 am DL865 Delta Air Lines Inc.
Atlanta — Boston
8h 3m
including layover
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from$303
2:13 pm — 5:04 am
+1 day
2:13 pm — 5:00 pm DL2830 Delta Air Lines Inc.
Seattle — Los Angeles
3h 33m stop
8:33 pm — 5:04 am B6988 JetBlue
Los Angeles — Boston
11h 51m
including layover
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from$337
2:13 pm — 5:50 am
+1 day
2:13 pm — 5:00 pm DL2830 Delta Air Lines Inc.
Seattle — Los Angeles
4h 25m stop
9:25 pm — 5:50 am DL507 Delta Air Lines Inc.
Los Angeles — Boston
12h 37m
including layover
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from$343
3:31 pm — 5:51 am
+1 day
3:31 pm — 7:19 pm DL4094 Delta Air Lines Inc.
Seattle — Denver
4h 40m stop
11:59 pm — 5:51 am UA2610 United Airlines
Denver — Boston
11h 20m
including layover
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from$284
3:50 pm — 8:15 am
+1 day
3:50 pm — 11:50 pm DL489 Delta Air Lines Inc.
Seattle — Raleigh
6h 17m stop
6:07 am — 8:15 am DL1054 Delta Air Lines Inc.
Raleigh — Boston
13h 25m
including layover
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from$348
4:15 pm — 7:27 am
+1 day
4:15 pm — 0:37 am DL446 Delta Air Lines Inc.
Seattle — New York
5h 23m stop
6:00 am — 7:27 am DL5765 Delta Air Lines Inc.
New York — Boston
12h 12m
including layover
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from$331
4:45 pm — 7:56 am
+1 day
4:45 pm — 7:15 pm DL2955 Delta Air Lines Inc.
Seattle — Las Vegas
4h 44m stop
11:59 pm — 7:56 am B6778 JetBlue
Las Vegas — Boston
12h 11m
including layover
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from$320
5:59 pm — 11:23 am
+1 day
5:59 pm — 11:58 pm DL2108 Delta Air Lines Inc.
Seattle — Chicago
8h 12m stop
8:10 am — 11:23 am AA314 American Airlines
Chicago — Boston
14h 24m
including layover
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from$221
5:59 pm — 10:20 am
+1 day
5:59 pm — 11:58 pm DL2108 Delta Air Lines Inc.
Seattle — Chicago
7h 2m stop
7:00 am — 10:20 am AA3703 American Airlines
Chicago — Boston
13h 21m
including layover
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from$221
7:15 am — 10:22 pm
7:15 am — 1:20 pm DL2055 Delta Air Lines Inc.
Seattle — Chicago
5h 30m stop
6:50 pm — 10:22 pm DL2646 Delta Air Lines Inc.
Chicago — Boston
12h 7m
including layover
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from$276
8:55 am — 11:39 pm
8:55 am — 12:43 pm DL2740 Delta Air Lines Inc.
Seattle — Denver
5h 4m stop
5:47 pm — 11:39 pm UA2292 United Airlines
Denver — Boston
11h 44m
including layover
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from$284
9:00 am — 7:40 pm
9:00 am — 2:26 pm DL942 Delta Air Lines Inc.
Seattle — Minneapolis
1h 21m stop
3:47 pm — 7:40 pm DL2591 Delta Air Lines Inc.
Minneapolis — Boston
7h 40m
including layover
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from$303
9:40 am — 11:59 pm
9:40 am — 12:36 pm DL2769 Delta Air Lines Inc.
Seattle — Los Angeles
2h 54m stop
3:30 pm — 11:59 pm DL437 Delta Air Lines Inc.
Los Angeles — Boston
11h 19m
including layover
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from$303
11:05 pm — 3:30 pm
+1 day
11:05 pm — 6:23 am DL810 Delta Air Lines Inc.
Seattle — Detroit
42m stop
7:05 am — 8:48 am DL2566 Delta Air Lines Inc.
Detroit — New York
5h 22m stop
2:10 pm — 3:30 pm DL5647 Delta Air Lines Inc.
New York — Boston
13h 25m
including layover
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from$254
6:00 am — 11:43 pm
6:00 am — 1:45 pm DL569 Delta Air Lines Inc.
Seattle — Atlanta
50m stop
2:35 pm — 4:38 pm DL2312 Delta Air Lines Inc.
Atlanta — New York
5h 51m stop
10:29 pm — 11:43 pm AA4659 American Airlines
New York — Boston
14h 43m
including layover
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from$237
6:05 am — 11:43 pm
6:05 am — 11:33 am DL943 Delta Air Lines Inc.
Seattle — Minneapolis
2h 50m stop
2:23 pm — 6:00 pm DL2866 Delta Air Lines Inc.
Minneapolis — New York
4h 29m stop
10:29 pm — 11:43 pm AA4659 American Airlines
New York — Boston
14h 38m
including layover
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from$237
8:55 am — 11:44 pm
8:55 am — 12:43 pm DL2740 Delta Air Lines Inc.
Seattle — Denver
3h 17m stop
4:00 pm — 7:33 pm AA122 American Airlines
Denver — Chicago
47m stop
8:20 pm — 11:44 pm AA4380 American Airlines
Chicago — Boston
11h 49m
including layover
Find flight
from$294
*Departure and arrival times are local. Last updated on 03/21/2025

Flight Information

There are 2 flights by Delta Air Lines Inc. from Seattle to Boston every week with departures from Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB. All flights arrive at Logan, Boston City Heliport, Boston RT128 Rail, Boston South Rail.

Departures start from 11:05 pm to 9:41 am. Nonstop flight is 5h 26m. The time difference between Seattle and Boston is 3h.

  • The fastest flight 5h 26m
  • Average flight time 5h 29m
  • The earliest flight 11:05 pm
  • The latest flight 9:41 am
  • Distance 2489 ml

The cheapest months for traveling to Boston are november (from 148 $).

The cheapest flight by Delta Air Lines Inc. that our users were able to find is $148. This airfare is economy class on one-way DL473 flight for November 12, 2024 leaving Seattle-Tacoma Intl in Seattle at 11:29 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Delta Air Lines Inc. there are other 8 airline carriers between Seattle and Boston. Please review schedules and prices from the most popular airlines to find the best airfare deals from Seattle to Boston.

Nonstop flights

There are 9 direct flights every day from Seattle. Airlines and fares are below:

  • from $87
    Find
  • AA - American Airlines
    from $209
    Find
  • AS - Alaska Airlines
    from $108
    Find
See more direct flights

Connecting Flights

List of flights with layovers (1 and more stops):

  • AA - American Airlines
    from $148
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  • AS - Alaska Airlines
    from $110
    Find
  • F9 - Frontier Airlines
    from $191
    Find
  • SY - Sun Country Airlines
    from $163
    Find
  • TK - Turkish Airlines
    from $1348
    Find
  • UA - United Airlines
    from $152
    Find
  • NK - Spirit Airlines
    from $109
    Find
See more connecting flights

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