Skip to main content

Route

Baltimore → Seattle

BWIBaltimoreBaltimore/Washington International Thurgood Marshall Airport
SEASeattleSeattle–Tacoma International Airport
Distance
2,329 mi
Estimated flight time
~5h 10m

Seattle is currently 3 hours behind Baltimore.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

Daily at most

On average around 1.5 flights a day, observed from October 2025 to September 2026.

1.5
flights per day
2
busiest month · Nov
1
quietest month · Oct
5 hr 16 min
measured flight time
12 / 12
months seen

Through the year

Per day, month by month

  1. 1Jan2026
  2. 1Feb
  3. 1Mar
  4. 1Apr
  5. 1May
  6. 2Jun
  7. 2Jul
  8. 2Aug
  9. 2Sep
  10. 1Oct2025
  11. 2Nov
  12. 2Dec

Airlines

Who flies it

Alaska Airlinesall year
Southwest Airlinessummer
Atlas Airnow and then

Through the day

Departure times

Local time in Baltimore. Most departures between 07:00 and 10:00.

  1. 00:00
  2. 01:00
  3. 02:00
  4. 03:00
  5. 04:00
  6. 05:00
  7. 06:00
  8. 07:00
  9. 08:00
  10. 09:00
  11. 10:00
  12. 11:00
  13. 12:00
  14. 13:00
  15. 14:00
  16. 15:00
  17. 16:00
  18. 17:00
  19. 18:00
  20. 19:00
  21. 20:00
  22. 21:00
  23. 22:00
  24. 23:00

Through the week

By weekday

  1. 1.4Mon
  2. 1.3Tue
  3. 1.2Wed
  4. 1.3Thu
  5. 1.5Fri
  6. 1.5Sat
  7. 1.3Sun

Fleet

Aircraft observed

  1. Boeing 737-900B73938%
  2. Boeing 737 MAX 9B39M34%
  3. Boeing 737-700B7379%
  4. Boeing 737 MAX 8B38M9%
  5. Boeing 737-800B7389%
All the numbers in a table
MonthPer daySeenAirlines
January 2026134
  • Alaska Airlines34×
February 2026119
  • Alaska Airlines19×
March 2026111
  • Alaska Airlines11×
April 2026113
  • Alaska Airlines13×
May 2026135
  • Alaska Airlines35×
June 2026262
  • Alaska Airlines38×
  • Southwest Airlines24×
July 2026262
  • Alaska Airlines32×
  • Southwest Airlines27×
  • Atlas Air1×
August 2026265
  • Alaska Airlines37×
  • Southwest Airlines27×
  • Atlas Air1×
September 2026255
  • Alaska Airlines29×
  • Southwest Airlines26×
October 2025132
  • Alaska Airlines31×
  • Southwest Airlines1×
November 2025250
  • Alaska Airlines47×
  • Atlas Air3×
December 2025255
  • Alaska Airlines54×

Airlines observed on this route

From observed callsign routes on BWI-SEA - not a booking guarantee.

Alaska Airlines

AS · ASA

Hub: SEA Seattle

98 departure airportsView airline →

Atlas Air

5Y · GTI

Hub: MIA Miami

71 departure airportsView airline →

Southwest Airlines

WN · SWA

Hub: DEN Denver

117 departure airportsView airline →

About this route

  • Domestic route: both airports are in the same country.
  • The 10th longest observed direct route from BWI, out of 104.
  • The opposite direction has also been observed as a direct connection.
  • Direct destinations observed from Baltimore: 104.
  • Direct destinations observed from Seattle: 132.

The airports on this route

Baltimore/Washington International Thurgood Marshall Airport

Baltimore, United StatesBWI / KBWI

Major airport · 104 direct destinations · 3 runways · longest runway 10,502 ft

65 °F · RainSource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Seattle–Tacoma International Airport

Seattle, United StatesSEA / KSEA

International hub · 132 direct destinations · 3 runways · longest runway 11,900 ft

75 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Alternative airports for this journey

Same journey, a different airport nearby - with an observed direct connection.

DCA SEARonald Reagan Washington National AirportWashington is about 30 mi from Baltimore.View route →IAD SEAWashington Dulles International AirportDulles is about 45 mi from Baltimore.View route →PHL SEAPhiladelphia International AirportPhiladelphia is about 90 mi from Baltimore.View route →

About the route from Baltimore to Seattle

The observed direct connection between Baltimore/Washington International Thurgood Marshall Airport (BWI) and Seattle–Tacoma International Airport (SEA) covers approximately 2,329 mi. The estimated flight time is around 5h 10m. Alaska Airlines, Atlas Air and Southwest Airlines have been observed on this connection in the available route data.

Frequently asked questions about this route

How far is Baltimore from Seattle by air?
The great-circle distance between Baltimore/Washington International Thurgood Marshall Airport and Seattle–Tacoma International Airport is approximately 2,329 mi.
How long is the flight from Baltimore to Seattle?
Based on the distance, the estimated flight time is about 5h 10m. This is an estimate, not a schedule.
Is there a direct connection from Baltimore to Seattle?
Yes, a direct connection between BWI and SEA has been observed in our route data.
Which airlines have been observed on this route?
In the available route data: Alaska Airlines, Atlas Air and Southwest Airlines.
How often is there a flight from Baltimore to Seattle?
On average around 1.5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 493 observed flights. Mainly Alaska Airlines, Southwest Airlines, Atlas Air. That is an observation, not a timetable.
What is the current time difference between Baltimore and Seattle?
Seattle is currently 3 hours behind Baltimore.

Where this data comes from

The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.

The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.

Route data updated on October 11, 2026.