How can I find cheap flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
Explore the cheapest one-way and round-trip flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport over the next 90 days, with one-way fares from $140 and round-trip from $238. Based on Trip.com's latest 7-day flight data.
- Round-trip
- Cheapest
- Nonstop
- Recommended
- Next 7 days
- Fastest
- Cheapest nonstop
BWI 6:15 PM5h 45mNonstopSEA 9:00 PMBaltimore - Seattle | Sat, Nov 14 | Alaska Airlines
SEA 9:41 PM4h 59mNonstopBWI 5:40 AMSeattle - Baltimore | Sat, Nov 21 | Alaska Airlines$331 $47530% off30% off$475 $331
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Mon, Nov 23 | Alaska Airlines
SEA 9:08 AM5h 4mNonstopBWI 5:12 PMSeattle - Baltimore | Mon, Nov 30 | Alaska Airlines$337 $47528% off28% off$475 $337
BWI 11:00 AM10h 10m1 stopSEA 6:10 PMBaltimore - Seattle | Fri, Nov 20 | American Airlines
SEA 9:45 PM9h 25m1 stopBWI 10:10 AMSeattle - Baltimore | Wed, Nov 25 | American Airlines$238 $47550% off50% off$475 $238
BWI 6:20 AM8h 58m1 stopSEA 12:18 PMBaltimore - Seattle | Sat, Nov 14 | American Airlines
SEA 6:00 AM8h1 stopBWI 5:00 PMSeattle - Baltimore | Fri, Nov 20 | American Airlines$24149% off$475 $241
BWI 4:45 PM8h 18m1 stopSEA 10:03 PMBaltimore - Seattle | Thu, Nov 5 | Delta Air Lines
SEA 11:10 PM6h 45m1 stopBWI 8:55 AMSeattle - Baltimore | Thu, Nov 12 | Delta Air Lines$28340% off$475 $283
BWI 6:27 PM9h 8m1 stopSEA 12:35 AMBaltimore - Seattle | Fri, Nov 27 | American Airlines
SEA 12:38 PM7h 31m1 stopBWI 11:09 PMSeattle - Baltimore | Thu, Dec 3 | American Airlines$28640% off$475 $286
BWI 6:15 PM5h 45mNonstopSEA 9:00 PMBaltimore - Seattle | Sat, Nov 14 | Alaska Airlines
SEA 5:15 AM11h1 stopBWI 7:15 PMSeattle - Baltimore | Fri, Nov 20 |$28740% off$475 $287
BWI 6:32 PM8h 20m1 stopSEA 11:52 PMBaltimore - Seattle | Thu, Nov 12 | Delta Air Lines
SEA 1:42 PM6h 41m1 stopBWI 11:23 PMSeattle - Baltimore | Mon, Nov 16 | Delta Air Lines$29538% off$475 $295
BWI 4:50 PM10h 7m1 stopSEA 11:57 PMBaltimore - Seattle | Thu, Nov 26 | Delta Air Lines
SEA 11:40 PM8h 15m1 stopBWI 10:55 AMSeattle - Baltimore | Mon, Nov 30 | Delta Air Lines$29737% off$475 $297
BWI 1:00 PM17h 25m1 stopSEA 2:00 PMBaltimore - Seattle | Thu, Nov 5 | Normal Airline
SEA 3:00 PM6hNonstopBWI 4:00 PMSeattle - Baltimore | Sat, Nov 7 | Normal AirlineFind more flightsFind more flights
- Cheapest
BWI 7:15 AM10h 28m1 stopSEA 2:43 PMBaltimore - Seattle | Thu, Dec 31 | Delta Air Lines$140 $27850% off50% off$278 $140
BWI 7:21 PM7h 38m1 stopSEA 11:59 PMBaltimore - Seattle | Thu, Nov 5 | Delta Air Lines$142 $27849% off49% off$278 $142
BWI 4:04 PM11h 6m1 stopSEA 12:10 AMBaltimore - Seattle | Thu, Nov 5 | American Airlines$143 $27849% off49% off$278 $143
BWI 7:18 AM10h 18m1 stopSEA 2:36 PMBaltimore - Seattle | Thu, Dec 31 | American Airlines$14349% off$278 $143
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Thu, Nov 12 | Alaska Airlines$14880% off$757 $148
BWI 5:00 AM7h 58m1 stopSEA 9:58 AMBaltimore - Seattle | Wed, Nov 11 | American Airlines$15744% off$278 $157
BWI 6:03 PM6h 13mNonstopSEA 9:16 PMBaltimore - Seattle | Fri, Dec 18 | Alaska Airlines$19430% off$278 $194
BWI 6:03 PM6h 13mNonstopSEA 9:16 PMBaltimore - Seattle | Wed, Dec 2 | Alaska Airlines$19474% off$757 $194
BWI 7:00 AM6h 11mNonstopSEA 10:11 AMBaltimore - Seattle | Thu, Dec 31 | Alaska Airlines$19530% off$278 $195
BWI 1:00 PM17h 25m1 stopSEA 2:00 PMBaltimore - Seattle | Thu, Nov 5 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Thu, Nov 12 | Alaska Airlines$148 $75780% off80% off$757 $148
BWI 6:03 PM6h 13mNonstopSEA 9:16 PMBaltimore - Seattle | Fri, Dec 18 | Alaska Airlines$194 $27830% off30% off$278 $194
BWI 6:03 PM6h 13mNonstopSEA 9:16 PMBaltimore - Seattle | Wed, Dec 2 | Alaska Airlines$194 $75774% off74% off$757 $194
BWI 7:00 AM6h 11mNonstopSEA 10:11 AMBaltimore - Seattle | Thu, Dec 31 | Alaska Airlines$19530% off$278 $195
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Thu, Nov 19 | Alaska Airlines$19530% off$278 $195
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Mon, Nov 23 | Alaska Airlines$19628% off$278 $196
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Thu, Dec 3 | Alaska Airlines$19628% off$278 $196
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Mon, Nov 30 | Alaska Airlines$19628% off$278 $196
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Sat, Nov 7 | Alaska Airlines$19674% off$757 $196
BWI 1:00 PM17h 25m1 stopSEA 2:00 PMBaltimore - Seattle | Thu, Nov 5 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Thu, Nov 12 | Alaska Airlines$148 $75780% off80% off$757 $148
BWI 6:03 PM6h 13mNonstopSEA 9:16 PMBaltimore - Seattle | Wed, Dec 2 | Alaska Airlines$194 $75774% off74% off$757 $194
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Sat, Nov 7 | Alaska Airlines$196 $75774% off74% off$757 $196
BWI 6:03 PM6h 13mNonstopSEA 9:16 PMBaltimore - Seattle | Tue, Dec 15 | Alaska Airlines$19774% off$757 $197
BWI 6:03 PM6h 13mNonstopSEA 9:16 PMBaltimore - Seattle | Tue, Dec 8 | Alaska Airlines$19774% off$757 $197
BWI 7:00 AM6h 11mNonstopSEA 10:11 AMBaltimore - Seattle | Sat, Dec 12 | Alaska Airlines$19774% off$757 $197
BWI 6:03 PM6h 13mNonstopSEA 9:16 PMBaltimore - Seattle | Wed, Dec 9 | Alaska Airlines$19774% off$757 $197
BWI 6:45 PM6h 15mNonstopSEA 10:00 PMBaltimore - Seattle | Sun, Jan 3 | Alaska Airlines$20373% off$757 $203
BWI 6:20 PM6h 1mNonstopSEA 9:21 PMBaltimore - Seattle | Thu, Jan 7 | Alaska Airlines$20573% off$757 $205
BWI 1:00 PM17h 25m1 stopSEA 2:00 PMBaltimore - Seattle | Thu, Nov 5 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Sat, Nov 7 | Alaska Airlines$196 $67971% off71% off$679 $196
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Thu, Nov 5 | Alaska Airlines$206 $67970% off70% off$679 $206
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Fri, Nov 6 | Alaska Airlines$206 $67970% off70% off$679 $206
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Mon, Nov 9 | Alaska Airlines$20670% off$679 $206
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Wed, Nov 4 | Alaska Airlines$26261% off$679 $262
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Sun, Nov 8 | Alaska Airlines$48228% off$679 $482
BWI 12:37 PM8h 58m1 stopSEA 6:35 PMBaltimore - Seattle | Sat, Nov 7 | Delta Air Lines$20869% off$679 $208
BWI 2:59 PM8h 51m1 stopSEA 8:50 PMBaltimore - Seattle | Wed, Nov 4 | Delta Air Lines$20969% off$679 $209
BWI 2:59 PM8h 51m1 stopSEA 8:50 PMBaltimore - Seattle | Fri, Nov 6 | Delta Air Lines$21968% off$679 $219
BWI 1:00 PM17h 25m1 stopSEA 2:00 PMBaltimore - Seattle | Thu, Nov 5 | Normal AirlineFind more flightsFind more flights
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Thu, Nov 12 | Alaska Airlines$148 $75780% off80% off$757 $148
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Thu, Nov 19 | Alaska Airlines$195 $27830% off30% off$278 $195
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Mon, Nov 23 | Alaska Airlines$196 $27828% off28% off$278 $196
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Thu, Dec 3 | Alaska Airlines$19628% off$278 $196
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Mon, Nov 30 | Alaska Airlines$19628% off$278 $196
BWI 7:02 AM5h 54mNonstopSEA 9:56 AMBaltimore - Seattle | Sat, Nov 7 | Alaska Airlines$19674% off$757 $196
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Mon, Nov 9 | Alaska Airlines$20673% off$757 $206
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Thu, Nov 5 | Alaska Airlines$20673% off$757 $206
BWI 6:15 PM5h 54mNonstopSEA 9:09 PMBaltimore - Seattle | Fri, Nov 6 | Alaska Airlines$20673% off$757 $206
BWI 1:00 PM17h 25m1 stopSEA 2:00 PMBaltimore - Seattle | Thu, Nov 5 | Normal AirlineFind more flightsFind more flights
Displayed flight fares from Baltimore to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.
Trip.com Price Insights: Flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport
What is the cheapest month for one-way flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
Based on Trip.com’s data from the past 12 months, if you’re looking for a low-cost one-way ticket from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport, the best time to buy is in February, with an average price of $172. You’ll want to avoid December, when the average price can reach as high as $491.
What is the cheapest day of the week to fly from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
Based on Trip.com’s data from the past 12 months, the cheapest day to depart from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport is Tuesday, with average fares typically lower than other days. You’ll want to avoid flying on Sunday, as ticket prices are usually the highest that day.
Which airline offers the cheapest flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
The cheapest airline flying from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport is Frontier Airlines (from $124) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.







Find more flights and airlines
What is the flight schedule from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
Check the schedule for flights from Baltimore to Seattle and find the flight that best matches your travel plans.
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AS786
Baltimore/Washington International Airport
7:02 AM
BWI
9:56 AM
SEA
S M T W T F SSearch -
AS379
Baltimore/Washington International Airport
6:15 PM
BWI
9:09 PM
SEA
S - - W T - SSearch -
AA2224
Baltimore/Washington International Airport
5:00 AM
BWI
6:35 AM
CLT
S M T W T F SSearch -
AA845
Charlotte Douglas International Airport
8:15 PM
CLT
11:10 PM
SEA
S M T W T F S -
DL2526
Baltimore/Washington International Airport
12:00 PM
BWI
1:48 PM
MSP
S M - - - - -Search -
DL877
Minneapolis-Saint Paul International Airport
2:40 PM
MSP
4:35 PM
SEA
S M T W T F S -
DL2526
Baltimore/Washington International Airport
12:00 PM
BWI
1:48 PM
MSP
S M - - - - -Search -
DL881
Minneapolis-Saint Paul International Airport
6:25 PM
MSP
8:27 PM
SEA
S M T W T F S -
DL2357
Baltimore/Washington International Airport
2:59 PM
BWI
4:49 PM
MSP
- - T W T F SSearch -
DL881
Minneapolis-Saint Paul International Airport
6:25 PM
MSP
8:27 PM
SEA
S M T W T F S -
DL1176
Baltimore/Washington International Airport
7:10 AM
BWI
10:11 AM
SLC
S M - W T F SSearch -
DL2995
Salt Lake City International Airport
11:00 AM
SLC
12:24 PM
SEA
S M T W T F S -
DL2562
Baltimore/Washington International Airport
8:10 AM
BWI
10:18 AM
ATL
S M T W T F SSearch -
DL629
Hartsfield–Jackson Atlanta International Airport
12:00 PM
ATL
2:38 PM
SEA
S M T W T F S -
UA2012
Baltimore/Washington International Airport
4:10 PM
BWI
6:07 PM
DEN
S M T W T F SSearch -
UA2651
Denver International Airport
9:00 PM
DEN
10:59 PM
SEA
- - T W T F S -
AA986
Baltimore/Washington International Airport
7:16 AM
BWI
8:50 AM
ORD
S M T W T F SSearch -
AA2398
O'Hare Intl. Airport
11:30 AM
ORD
2:20 PM
SEA
S M T W T F S
About Baltimore/Washington International Airport and Seattle Tacoma Intl. Airport
Learn about Baltimore/Washington International Airport (BWI) and Seattle Tacoma Intl. Airport (SEA) — including location, terminals, transportation, and travel tips.
| Flight distance | 3,751.55 km |
|---|---|
| Cheapest one-way ticket price | $140 |
| Cheapest return ticket price | $238 |
FAQs for Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport Flights
How long is the flight from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport takes about 5 hours 22 minutes on average. Actual flight time may vary depending on route, weather and air traffic.How many daily flights are there from Baltimore/Washington International Airport (BWI) to Seattle Tacoma Intl. Airport (SEA)?
There are around 2 daily flights from Baltimore/Washington International Airport (BWI) to Seattle Tacoma Intl. Airport (SEA).What is the flight schedule from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
The earliest flight from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport departs at 07:02, and the last departs at 18:15, with about 2 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.When are flight tickets from Baltimore/Washington International Airport (BWI) to Seattle Tacoma Intl. Airport (SEA) most expensive?
The route from Baltimore/Washington International Airport (BWI) to Seattle Tacoma Intl. Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around $387 in December, the most expensive month to book this route.What time does the earliest flight from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport depart?
The earliest flight departs from Baltimore/Washington International Airport (BWI) at 07:38 and arrives in Seattle Tacoma Intl. Airport (SEA) at 10:30.What time does the latest flight from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport depart?
The latest flight departs from Baltimore/Washington International Airport (BWI) at 19:16 and arrives in Seattle Tacoma Intl. Airport (SEA) at 22:24.What is the transportation method from the main airport to downtown in Seattle?
- The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
Which airline operates the most direct flights from Baltimore/Washington International Airport (BWI) to Seattle Tacoma Intl. Airport (SEA)?
Hawaiian Airlines is a very popular airline operating an average of 185 flights per month.What are the cheapest flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
One-way flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport currently start from $140, and round-trip fares start from $238. The current lowest fare is a Delta Air Lines flight departing on Thu, Dec 31; prices may vary depending on availability.Which airlines offer direct flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
Yes. Alaska Airlines operate direct flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport, with an average flight time of 5 hours 18 minutes, and around 13 weekly flights. Actual flight frequency may vary by season.What is the average price of a flight from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport is $273. Prices may vary depending on the departure date, airline, and availability.How many weekly flights are there from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport?
Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport operates around 13 weekly flights, mainly by Alaska Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.How do I book flights from Baltimore/Washington International Airport to Seattle Tacoma Intl. Airport on Trip.com?
Enter Baltimore/Washington International Airport and Seattle Tacoma Intl. Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.
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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.