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DL438 Flight Information & Schedule

Delta Air Lines · Seattle–Tacoma International Airport (SEA) to Boston Logan International Airport (BOS)

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DL438 Seattle–Tacoma International Airport to Boston Logan International Airport nonstop flight: schedule, airports, aircraft and travel guide.

DL438 Flight Overview

DL438 is operated by Delta Air Lines and connects Seattle–Tacoma International Airport (SEA) and Boston Logan International Airport (BOS). Scheduled departure: 2026-10-29 11:08 (UTC-07:00); scheduled arrival: 2026-10-29 19:41 (UTC-04:00).

AirlineDelta Air Lines
Flight numberDL438
RouteSEA to BOS
Scheduled duration5 hr 33 min

Seattle to Boston Route Information

DL438 is a nonstop flight from Seattle–Tacoma International Airport (SEA) to Boston Logan International Airport (BOS). Use the information below to plan your journey.

Route distanceApprox. 4,014 km
Scheduled flight time5 hr 33 min
Time difference180 min
Flight typenonstop
01

Departure

Scheduled departure: 2026-10-29 11:08 (UTC-07:00). Confirm airport transport and terminal opening hours in advance.

02

Arrival

Scheduled arrival: 2026-10-29 19:41 (UTC-04:00). Arrange pickup, hotel and onward transport for the arrival date.

03

Time zones

Departure: Seattle (UTC-07:00); arrival: Boston (UTC-04:00).

DL438 On-time Performance & History

Methodology

73%Arrival on-time rate
Sample flights73 (flights)
Average departure delay1 min
Average arrival delay17 min
Cancllation rate1%
Longest delay165 min
Early arrivals53%

Historical statistics are for reference only and do not predict future flight performance.

Aircraft, Cabin & Services

Based on currently published aircraft and cabin information; the operating aircraft may change.

Published aircraft type

Airbus A321neo

Economy 31 in; Business 37 in

Seat layout194

Business Class2-2

37 in

Seat configuration depends on the operating aircraft

Economy Class3-3

31 in

MealsComplimentary snacks and drinks on flights over 250 miles; meals on long-haul international

Inflight entertainmentDelta Sync seatback screens or Delta Studio on personal devices

Inflight Wi-FiWi-Fi is available

Availability and fees depend on the flight

PowerBusiness: USB port and power outlet; Economy: USB port and power outlet

BassinetAvailable

Accessibility-

DL438 Airports

Terminals follow the published schedule; check official airline channels for same-day gates and operations.

Seattle–Tacoma International Airport Departure & Boston Logan International Airport Arrival Guide

Departure date: 2026-10-29. Terminal and arrival information helps plan your journey.

SEA

Departing from Seattle–Tacoma International Airport

DL438 is scheduled to depart from . Allow time for international check-in, baggage drop, security and immigration.

BOS

Arriving at Boston Logan International Airport

Scheduled arrival is at A. After immigration, take the MRT, taxi, ride-hailing service or airport bus to the city.

 

Planning your arrival

Scheduled arrival: 2026-10-29 19:41. Use the arrival date when booking hotels and pickup services.

Flight Changes, Cancellations & Missed Flights

If the schedule or aircraft changes, follow the booking channel and operating carrier rules.

01

Schedule changes

After an airline or booking-platform notice, confirm the new date, terminal and connecting transport.

02

Cancellation and changes

Refund, rebooking and involuntary-change rules depend on the booking channel, fare conditions and airline notice.

03

Missed flight

If you may not reach the airport on time, contact the booking channel or airline quickly to protect later sectors.

Check-in, Baggage & Entry Tips

International check-in deadlines, baggage allowance and entry requirements may vary by fare and traveller.

01

Arrive early for check-in

Arrive at least 3 hours before departure. Counter opening times and online check-in rules follow Seattle–Tacoma International Airport guidance.

02

Check baggage allowance

Checked and carry-on baggage allowances depend on cabin, fare rules and membership tier. See the baggage terms in your booking.

03

Prepare entry documents

Before departure, check passport validity, visa or visa-free eligibility, andBoston Logan International Airport’ latest arrival declaration requirements.

What should I check before flying DL438?

01

Check the departure date

For an overnight flight, check the departure date on your ticket and plan airport transport in advance.

02

Confirm the operating carrier

Follow the airline rules shown in your booking for check-in and checked baggage.

03

Check boarding information

Gates and operating times may change; follow airline notices and airport displays.

Popular route recommendations

DL438 Frequently Asked Questions

Which airline operates this flight?

DL438 is operated by Delta Air Lines.

Where does it depart and arrive?

Seattle–Tacoma International Airport (SEA) → Boston Logan International Airport (BOS).

What are the departure and arrival times?

Scheduled departure 11:08, arrival 19:41 · 5 hours 33 minutes.

Which terminal is used for check-in?

Departure terminal No data, arrival terminal A. Check-in, gate and baggage belt are announced on the day.

Are meals and inflight entertainment available?

Meals: Complimentary snacks and drinks on flights over 250 miles; meals on long-haul international. Inflight entertainment: Delta Sync seatback screens or Delta Studio on personal devices.

Explore This Route

Departure airportFlights from Seattle–Tacoma International Airport
Arrival airportBoston Logan International Airport information
Operating airlineDelta Air Lines information