HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$149+ Cheap flights from Baltimore to Seattle (BWI - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SEA
Dec 7 — Dec 141
Sat 12/7
Sat 12/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to Seattle with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Baltimore/Washington to Seattle/Tacoma Intl are usually found in January or February, booked 77 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from Baltimore to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 2, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

January

Round-trip from

$259
(Mytrip)

One-way from

$149
(Alaska Airlines)
Provider with most accurate pricing for Baltimore/Washington-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-Seattle/Tacoma Intl flights.
Search Deals
High demand for flights, 20% potential price rise
Search Deals
Best time to find cheap flights, 22% potential price drop
Search Deals
From Baltimore/Washington to Seattle/Tacoma Intl
Search Deals
One-way flight from Baltimore/Washington to Seattle/Tacoma Intl
Search Deals

Find flight deals from Baltimore to Seattle

Cheapest flights from Baltimore to Seattle
Explore the most affordable flight options available from Baltimore to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 2, 2024.

This FlightHub deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/139:46 amBWI - SEA
1 stop13h 40mSpirit Airlines
Mon 1/205:55 pmSEA - BWI
1 stop25h 07mSpirit Airlines
Deal found 11/30$269
This Travelocity deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/148:00 amBWI - SEA
1 stop9h 53mMultiple Airlines
Mon 12/169:58 amSEA - BWI
Nonstop5h 01mMultiple Airlines
Deal found 12/1$359
This American Airlines deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/163:23 pmBWI - SEA
1 stop8h 52mAmerican Airlines
Thu 1/212:31 amSEA - BWI
1 stop7h 51mAmerican Airlines
Deal found 12/2$406
This Southwest deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/193:40 pmBWI - SEA
1 stop11h 45mSouthwest
Sat 1/46:10 pmSEA - BWI
1 stop14h 00mSouthwest
Deal found 12/1$436
This Alaska Airlines deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:57 pmBWI - SEA
Nonstop6h 03mAlaska Airlines
Thu 1/309:52 amSEA - BWI
Nonstop5h 07mAlaska Airlines
Deal found 12/1$488

Find flights from Baltimore to Seattle within your budget

Customize your flight search to find flights from Baltimore to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,650,959 searches. Data last updated December 2, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Tue 1/7

5:30 am-12:10 am

1 stop21h 40m

Seattle/Tacoma Intl

Tue 1/21

5:55 pm-10:02 pm

1 stop25h 07m

$253

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Wed 2/5

6:59 pm-10:00 pm

Nonstop6h 01m

Seattle/Tacoma Intl

Sun 2/9

9:52 am-5:59 pm

Nonstop5h 07m

$268

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Sat 1/11

6:00 am-12:31 pm

1 stop9h 31m

Seattle/Tacoma Intl

Sat 1/25

6:15 am-5:36 pm

1 stop8h 21m

$271

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Tue 3/4

10:03 am-12:20 am

2 stops17h 17m

Seattle/Tacoma Intl

Thu 3/6

3:16 pm-11:30 am

1 stop17h 14m

$274

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Wed 1/8

10:05 am-4:16 pm

1 stop9h 11m

Seattle/Tacoma Intl

Sat 1/11

5:15 pm-7:02 am

1 stop10h 47m

$276

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Wed 2/5

5:00 am-1:06 pm

2 stops11h 06m

Seattle/Tacoma Intl

Sun 2/9

10:31 am-11:27 pm

1 stop9h 56m

$301

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Wed 1/22

2:30 pm-10:40 pm

2 stops11h 10m

Seattle/Tacoma Intl

Tue 2/11

10:50 am-9:45 pm

1 stop7h 55m

$306

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Thu 1/23

6:59 pm-10:00 pm

Nonstop6h 01m

$149

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Fri 12/13

9:46 am-8:26 pm

1 stop13h 40m

$151

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Mon 1/6

4:02 pm-11:17 pm

1 stop10h 15m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 15 results
1
2

Compare providers for flights from Baltimore to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Seattle in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*3 stars
FareScanPrice Accuracy3 starsTrust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baltimore to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Baltimore to Seattle

Get recent, data-driven insights about flights from Baltimore to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Baltimore to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to Seattle. Price data was last updated on November 22, 2024.

The best time to book flights from Baltimore to Seattle is 77 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Baltimore to Seattle?

Currently, January is the cheapest month in which you can book a flight from Baltimore to Seattle (average of $238). Flying from Baltimore to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to SEA?

Find hourly flight availability from Baltimore to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 2, 2024.

A simple way to save on the total cost of your ticket is to fly from Baltimore to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 37% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Baltimore to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to Seattle. Price data was last updated on December 1, 2024.

Travelers seeking maximum savings on their Baltimore to Seattle flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated December 2, 2024.
Peruse reviews from past customers who have flown with American Airlines, United Airlines and Spirit Airlines from Baltimore to Seattle to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,951 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,951 reviews
Southwest
8.1
Very good
4,951 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,513 reviews
Southwest
8.1
Very good
4,951 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,698 reviews
Southwest
8.1
Very good
4,951 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
9,141 reviews
Southwest
8.1
Very good
4,951 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,951 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Baltimore to Seattle?

    To fly from Baltimore to Seattle, you need to book a flight from Baltimore/Washington (BWI) to Seattle/Tacoma Intl (SEA). Nonstop flights to Seattle/Tacoma Intl from Baltimore/Washington take 5h 50m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Baltimore/Washington to Seattle/Tacoma Intl offered by 9 different airlines.

  • How popular is this Baltimore to Seattle flight route?

    The Baltimore/Washington to Seattle/Tacoma Intl flight path was viewed by 27 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Baltimore to Seattle round-trip?

    According to our current data, Spirit Airlines ($259), Alaska Airlines ($268), and Delta ($271) offers the cheapest pricing from Baltimore to Seattle. Spirit Airlines is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Baltimore to Seattle one-way?

    One-way options have recently been found by users for as low as $149 on Alaska Airlines. Other airlines that offer cheap prices include Spirit Airlines from $151 and United Airlines from $158 one-way.

  • What are the most reliable airlines from Baltimore to Seattle?

    Consider Air Tahiti Nui (93%), Alaska Airlines (85%) or Hawaiian Airlines (84%) when booking your flight. These represent the most reliable airlines when flying from Baltimore to Seattle.

  • What are the cheapest flights from Baltimore to Seattle?

    The cheapest flight price from Baltimore to Seattle is $149. On average you can expect to pay $1,486. The most popular route, (Baltimore/Washington - Seattle/Tacoma Intl), can usually be booked for $228.

  • Where are the most common layover locations when flying from Baltimore to Seattle?

    Most of the time, Baltimore to Seattle flights that have layovers will stop in Charlotte. Charlotte is followed by Chicago in terms of the most popular layover location on flights from Baltimore to Seattle.

  • What are some popular things to do or see while on a layover in Charlotte?

    Most Charlotte visitors opt to spend their time experiencing Carowind, Mint Museum Uptown, and Ovens Auditorium. Carowind, Mint Museum Uptown, and Ovens Auditorium are located about 8.2 mi, 5.4 mi, and 8.5 mi, respectively from Charlotte Douglas. Travelers can rent a car at Charlotte Douglas for an average daily rate of $49 to make sightseeing during their layover a little easier.

  • What are some popular points of interest to see during a layover in Chicago?

    The majority of Chicago visitors spend their time at Magnificent Mile, Grant Park, and River North. Magnificent Mile, Grant Park and River North are located about 15.5 mi, 16.2 mi, and 15.0 mi, respectively from Chicago O'Hare Intl if you are interested in checking them out. Those looking to explore during their layover in Chicago can rent a car from Chicago O'Hare Intl for about $57 per day.

  • Where are the least popular layover locations for Baltimore to Seattle flights?

    Baltimore to Seattle flights have a layover in Minneapolis least often.

  • Can I find deals for flights from Baltimore to Seattle that include hotel bookings?

    Yes. In addition to deals on Baltimore to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to Seattle.

  • Can I find deals for business class flights from Baltimore to Seattle?

    Yes. Cheapflights offers flight deals from Baltimore to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Baltimore to Seattle (average of $238). Flying from Baltimore to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baltimore to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Seattle flights
Reagan-National to Seattle flights
Philadelphia to Seattle flights
Reagan-National to Portland flights
Dulles Intl to Portland flights
Baltimore to Portland flights
Philadelphia to Portland flights
Dulles Intl to Spokane flights
Philadelphia to Spokane flights
Reagan-National to Pasco flights
Reagan-National to Spokane flights
Dulles Intl to Pasco flights
Baltimore to Spokane flights
Baltimore to Pasco flights
Philadelphia to Pasco flights
Philadelphia to Pullman flights
Reagan-National to Wenatchee flights
Baltimore to Wenatchee flights
Salisbury to Seattle flights
Dulles Intl to Pullman flights
Dulles Intl to Wenatchee flights
Baltimore to Yakima flights
Reagan-National to Pullman flights
Baltimore to Pullman flights
Reagan-National to Yakima flights
Dulles Intl to Yakima flights
Reagan-National to Walla Walla flights
Dulles Intl to Walla Walla flights
Philadelphia to Wenatchee flights
Philadelphia to Bellingham flights
Dulles Intl to Bellingham flights
Baltimore to Walla Walla flights
Reagan-National to Bellingham flights
Baltimore to Bellingham flights
Philadelphia to Yakima flights

Top 8 airlines flying from Baltimore to Seattle

Discover the top 8 airlines that operate flights from Baltimore to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,650,959 searches. Data last updated December 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$190FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$164Average$264FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$184Average$380FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$224Average$391FlexibilityNo cancel feeOn-time71%
DeltaCheapest$235Average$387FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$276Average$487FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$278Average$460FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$326Average$498FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines