What’s the cheapest layover airport for flights from Baltimore to Seattle?

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $223.

What’s the fastest layover option from Baltimore to Seattle?

Flights via Minneapolis (MSP) have the shortest average one-way travel time for 1-stop routes: 7h 31m.

Which airport typically offers the quickest layover for flights from Baltimore to Seattle?

Flights via Minneapolis (MSP) offer the fastest connection on this route, with an average layover time of 1h 54m.

What’s the top layover airport for flights from Baltimore to Seattle?

Denver (DEN) – chosen by Cheapflights users on 71% of 1-stop itineraries from Baltimore to Seattle on Cheapflights.

How popular is this Baltimore to Seattle flight route?

The Baltimore/Washington to Seattle/Tacoma Intl flight path was viewed by 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from Baltimore to Seattle?

For as low as $227, Delta can have you in Seattle from Baltimore in 10h 30m. Baltimore and Seattle are separated by a distance of 2327 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

According to our current data, Spirit Airlines ($126), Frontier ($137), and American Airlines ($206) offers the cheapest pricing from Baltimore to Seattle. Spirit Airlines is 69% cheaper than the average price of flights available within the next 90 days to this destination.

Weekly flight availability from Baltimore to Seattle

The most flights from BWI to SEA are scheduled on a Monday (8 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 on average).

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.

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).

What are the cheapest flights from Baltimore to Seattle?

The cheapest flight price from Baltimore to Seattle is $79. On average you can expect to pay $625. The most popular route, (Baltimore/Washington - Seattle/Tacoma Intl), can usually be booked for $164.

What are the most reliable airlines from Baltimore to Seattle?

Consider Finnair (81%), Alaska Airlines (69%) or Hawaiian Airlines (69%) when booking your flight. These represent the most reliable airlines when flying from Baltimore to Seattle.

What are the most popular airlines that fly from Baltimore to Seattle?

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from Baltimore to Seattle.

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 Chicago.

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

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

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

Most Chicago visitors opt to spend their time experiencing Magnificent Mile, River North, and Grant Park. Magnificent Mile, River North, and Grant Park are located about 15.5 mi, 15.0 mi, and 16.2 mi, respectively from Chicago O'Hare Intl. Travelers can rent a car at Chicago O'Hare Intl for an average daily rate of $52 to make sightseeing during their layover a little easier.

What is the cheapest day to fly round-trip from Baltimore to Seattle?

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Travelers have found it’s best to book a flight 44 days in advance to save up to 63% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Baltimore to Seattle 1-2 weeks in advance for as low as $486, or $662 for flights within the next 24 hours.

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

The best pricing can be found in the month of September. Prices to Seattle from Baltimore average $401. You can even find prices in September for less than $401, as users have found deals to Seattle from as low as $178. The month of December appears to be one of the more expensive times to travel to Seattle from Baltimore. Flying in the targeted month can save you up to 21%.

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 40m on average. When it comes time to book airfare, you have a few options: there are 6 outbound flights from Baltimore/Washington to Seattle/Tacoma Intl offered by 9 different airlines.

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.

$97+ Flights from Baltimore to Seattle

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Cheapflights Tip: The best prices from Baltimore/Washington to Seattle/Tacoma Intl are usually found in January or September, booked 47 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap flight deals from Baltimore to Seattle

Round-trip from	$212 (American Airlines)
One-way from	$97 (Southwest)
Popular in	July
Cheapest in	January
Average price	$360

From Baltimore/Washington to Seattle/Tacoma Intl

Search Deals

One-way flight from Baltimore/Washington to Seattle/Tacoma Intl

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($52 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

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 September 11, 2025.

Thu 10/236:13 pmBWI - SEA

1 stop9h 14mAmerican Airlines

Mon 10/2711:56 pmSEA - BWI

1 stop7h 25mAmerican Airlines

Deal found 9/11

$212

Fri 10/244:46 pmBWI - SEA

2 stops22h 21mFrontier

Sun 10/268:43 pmSEA - BWI

1 stop18h 01mFrontier

Deal found 9/11

$214

Tue 9/308:12 amBWI - SEA

2 stops41h 47mFrontier

Fri 10/36:12 amSEA - BWI

1 stop8h 30mFrontier

Deal found 9/11

$215

Wed 10/811:23 amBWI - SEA

2 stops30h 53mMultiple Airlines

Mon 10/136:39 pmSEA - BWI

1 stop19h 37mMultiple Airlines

Deal found 9/10

$221

Thu 10/239:42 pmBWI - SEA

1 stop14h 06mFrontier

Sun 10/268:43 pmSEA - BWI

1 stop18h 01mFrontier

Deal found 9/11

$223

Fri 10/36:45 amBWI - SEA

1 stop10h 39mUnited Airlines

Sat 10/48:30 amSEA - BWI

1 stop7h 57mUnited Airlines

Deal found 9/10

$227

Wed 10/2911:05 amBWI - SEA

2 stops10h 35mSouthwest

Fri 10/3112:35 pmSEA - BWI

1 stop7h 00mSouthwest

Deal found 9/10

$229

Wed 11/193:10 pmBWI - SEA

2 stops10h 45mSouthwest

Mon 11/246:45 pmSEA - BWI

1 stop8h 00mSouthwest

Deal found 9/10

$231

Sat 11/16:15 amBWI - SEA

2 stops10h 39mUnited Airlines

Fri 11/75:05 amSEA - BWI

1 stop7h 05mUnited Airlines

Deal found 9/10

$232

Mon 10/66:13 pmBWI - SEA

1 stop9h 19mAmerican Airlines

Tue 10/1411:49 pmSEA - BWI

1 stop7h 32mAmerican Airlines

Deal found 9/11

$234

Tue 9/305:15 pmBWI - SEA

1 stop7h 51mDelta

Fri 10/37:30 pmSEA - BWI

1 stop7h 30mDelta

Deal found 9/10

$235

Fri 10/176:13 pmBWI - SEA

1 stop9h 14mAmerican Airlines

Tue 10/2111:49 pmSEA - BWI

1 stop7h 32mAmerican Airlines

Deal found 9/11

$236

Best flights from Baltimore to Seattle
Discover carefully curated flight deals from Baltimore to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Thu 10/307:15 amBWI - SEA

1 stop10h 30mDelta

Mon 11/31:35 pmSEA - BWI

1 stop7h 14mDelta

Deal found 9/9

$227

Fri 10/36:45 amBWI - SEA

1 stop10h 39mUnited Airlines

Sat 10/48:30 amSEA - BWI

1 stop7h 57mUnited Airlines

Deal found 9/10

$227

Thu 10/3011:00 amBWI - SEA

2 stops12h 15mSouthwest

Sat 11/15:00 amSEA - BWI

2 stops9h 00mSouthwest

Deal found 9/9

$251

Sat 11/17:38 amBWI - SEA

Nonstop5h 52mAlaska Airlines

Thu 11/610:20 pmSEA - BWI

Nonstop4h 58mAlaska Airlines

Deal found 9/10

$287

Mon 10/276:35 pmBWI - SEA

1 stop9h 24mUnited Airlines

Wed 10/297:00 amSEA - BWI

1 stop7h 14mUnited Airlines

Deal found 9/8

$227

Sat 10/410:51 amBWI - SEA

2 stops10h 02mUnited Airlines

Mon 10/611:40 pmSEA - BWI

1 stop7h 15mUnited Airlines

Deal found 9/9

$232

Wed 10/17:00 amBWI - SEA

2 stops14h 10mSouthwest

Tue 10/77:10 amSEA - BWI

1 stop13h 00mSouthwest

Deal found 9/9

$256

Fri 10/171:10 pmBWI - SEA

1 stop12h 10mSouthwest

Wed 10/221:20 pmSEA - BWI

2 stops12h 55mSouthwest

Deal found 9/10

$257

Wed 10/86:29 amBWI - SEA

2 stops10h 13mUnited Airlines

Thu 10/95:00 amSEA - BWI

1 stop7h 13mUnited Airlines

Deal found 9/10

$271

Wed 10/2910:10 amBWI - SEA

2 stops11h 15mUnited Airlines

Sun 11/211:59 pmSEA - BWI

1 stop7h 00mUnited Airlines

Deal found 9/9

$272

Fri 11/216:15 amBWI - SEA

1 stop8h 13mUnited Airlines

Fri 11/283:37 pmSEA - BWI

1 stop11h 03mUnited Airlines

Deal found 9/10

$272

Last-minute flights from Baltimore to Seattle
Discover last-minute flight deals from Baltimore to Seattle. Data last updated September 11, 2025 and is based on user searches.

Tue 9/308:12 amBWI - SEA

2 stops41h 47mFrontier

Fri 10/36:12 amSEA - BWI

1 stop8h 30mFrontier

Deal found 9/11

$215

Tue 9/305:15 pmBWI - SEA

1 stop7h 51mDelta

Fri 10/37:30 pmSEA - BWI

1 stop7h 30mDelta

Deal found 9/10

$235

Wed 10/18:25 amBWI - SEA

Nonstop5h 50mSouthwest

Fri 10/35:15 amSEA - BWI

1 stop8h 45mSouthwest

Deal found 9/8

$231

Wed 10/110:51 amBWI - SEA

2 stops10h 54mUnited Airlines

Fri 10/312:43 pmSEA - BWI

1 stop7h 35mUnited Airlines

Deal found 9/10

$232

Fri 10/36:45 amBWI - SEA

1 stop10h 39mUnited Airlines

Sat 10/48:30 amSEA - BWI

1 stop7h 57mUnited Airlines

Deal found 9/10

$227

Mon 10/66:13 pmBWI - SEA

1 stop9h 19mAmerican Airlines

Tue 10/1411:49 pmSEA - BWI

1 stop7h 32mAmerican Airlines

Deal found 9/11

$234

Wed 10/811:23 amBWI - SEA

2 stops30h 53mMultiple Airlines

Mon 10/136:39 pmSEA - BWI

1 stop19h 37mMultiple Airlines

Deal found 9/10

$221

Fri 10/176:13 pmBWI - SEA

1 stop9h 14mAmerican Airlines

Tue 10/2111:49 pmSEA - BWI

1 stop7h 32mAmerican Airlines

Deal found 9/11

$236

Thu 10/236:13 pmBWI - SEA

1 stop9h 14mAmerican Airlines

Mon 10/2711:56 pmSEA - BWI

1 stop7h 25mAmerican Airlines

Deal found 9/11

$212

Thu 10/237:50 amBWI - SEA

1 stop10h 26mMultiple Airlines

Mon 10/276:39 pmSEA - BWI

1 stop19h 37mMultiple Airlines

Deal found 9/10

$223

Fri 10/244:46 pmBWI - SEA

2 stops22h 21mFrontier

Sun 10/268:43 pmSEA - BWI

1 stop18h 01mFrontier

Deal found 9/11

$214

Wed 10/2911:05 amBWI - SEA

2 stops10h 35mSouthwest

Fri 10/3112:35 pmSEA - BWI

1 stop7h 00mSouthwest

Deal found 9/10

$229

One-way flights from Baltimore to Seattle
Search for one-way flight options from Baltimore to Seattle. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Tue 11/42:15 pmBWI - SEA

2 stops11h 15mSouthwest

Deal found 9/10

$97

Wed 12/37:00 amBWI - SEA

2 stops16h 40mSouthwest

Deal found 9/11

$98

Tue 11/115:34 pmBWI - SEA

1 stop7h 40mDelta

Deal found 9/11

$99

Sat 10/255:00 amBWI - SEA

2 stops11h 00mAmerican Airlines

Deal found 9/10

$104

Wed 10/2911:05 amBWI - SEA

2 stops10h 35mSouthwest

Deal found 9/9

$105

Mon 12/86:00 amBWI - SEA

1 stop15h 20mMultiple Airlines

Deal found 9/10

$107

Tue 10/286:05 amBWI - SEA

2 stops9h 30mSouthwest

Deal found 9/10

$110

Sat 11/151:15 pmBWI - SEA

2 stops10h 45mSouthwest

Deal found 9/9

$111

Thu 10/236:21 pmBWI - SEA

1 stop23h 55mMultiple Airlines

Deal found 9/9

$113

Mon 11/36:15 amBWI - SEA

1 stop8h 13mUnited Airlines

Deal found 9/10

$114

Wed 10/811:23 amBWI - SEA

2 stops30h 53mMultiple Airlines

Deal found 9/10

$115

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Thu 10/30

7:15 am-2:45 pm

1 stop10h 30m

Seattle/Tacoma Intl

Mon 11/3

1:35 pm-11:49 pm

1 stop7h 14m

$227

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Fri 10/3

6:45 am-2:24 pm

1 stop10h 39m

Seattle/Tacoma Intl

Sat 10/4

8:30 am-7:27 pm

1 stop7h 57m

$227

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Mon 10/27

6:35 pm-12:59 am

1 stop9h 24m

Seattle/Tacoma Intl

Wed 10/29

7:00 am-5:14 pm

1 stop7h 14m

$227

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Sat 10/4

10:51 am-5:53 pm

2 stops10h 02m

Seattle/Tacoma Intl

Mon 10/6

11:40 pm-9:55 am

1 stop7h 15m

$232

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Thu 10/30

11:00 am-8:15 pm

2 stops12h 15m

Seattle/Tacoma Intl

Sat 11/1

5:00 am-5:00 pm

2 stops9h 00m

$251

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Wed 10/1

7:00 am-6:10 pm

2 stops14h 10m

Seattle/Tacoma Intl

Tue 10/7

7:10 am-11:10 pm

1 stop13h 00m

$256

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Fri 10/17

1:10 pm-10:20 pm

1 stop12h 10m

Seattle/Tacoma Intl

Wed 10/22

1:20 pm-5:15 am

2 stops12h 55m

$257

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Wed 10/8

6:29 am-1:42 pm

2 stops10h 13m

Seattle/Tacoma Intl

Thu 10/9

5:00 am-3:13 pm

1 stop7h 13m

$271

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Wed 10/29

10:10 am-6:25 pm

2 stops11h 15m

Seattle/Tacoma Intl

Sun 11/2

11:59 pm-9:59 am

1 stop7h 00m

$272

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Fri 11/21

6:15 am-11:28 am

1 stop8h 13m

Seattle/Tacoma Intl

Fri 11/28

3:37 pm-5:40 am

1 stop11h 03m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 22 results

The best insider tips for Baltimore to Seattle flights

Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to Seattle trip

Airports

BWI

For long-term parking, choose the budget-friendly Long Term Parking lots. Allow extra time for shuttle transfers to the terminal.

SEA

Use the Link light rail for a cost-effective trip to downtown Seattle. It runs every 10 minutes and takes less than 40 minutes.

Our travel experts

Emily Zemler

Expert on BWI

Brandon Schultz

Expert on SEA

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.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to Seattle

Prices

Airlines

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

The best time to book flights from Baltimore to Seattle is 47 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 June is currently the most expensive (average of $388). 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?

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 17% on your trip compared to booking a flight at noon.

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

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

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Baltimore to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Southwest

8.0

Very good

4,248 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Delta

8.0

Very good

7,960 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Hawaiian Airlines

7.8

Good

2,723 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Related info for your journey

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 40m on average. When it comes time to book airfare, you have a few options: there are 6 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 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Baltimore to Seattle?
For as low as $227, Delta can have you in Seattle from Baltimore in 10h 30m. Baltimore and Seattle are separated by a distance of 2327 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Baltimore to Seattle round-trip?
According to our current data, Spirit Airlines ($126), Frontier ($137), and American Airlines ($206) offers the cheapest pricing from Baltimore to Seattle. Spirit Airlines is 69% cheaper than the average price of flights available within the next 90 days to this destination.
What are the most reliable airlines from Baltimore to Seattle?
Consider Finnair (81%), Alaska Airlines (69%) or Hawaiian Airlines (69%) 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 $79. On average you can expect to pay $625. The most popular route, (Baltimore/Washington - Seattle/Tacoma Intl), can usually be booked for $164.
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 Chicago.
What are some popular things to do or see while on a layover in Chicago?
Most Chicago visitors opt to spend their time experiencing Magnificent Mile, River North, and Grant Park. Magnificent Mile, River North, and Grant Park are located about 15.5 mi, 15.0 mi, and 16.2 mi, respectively from Chicago O'Hare Intl. Travelers can rent a car at Chicago O'Hare Intl for an average daily rate of $52 to make sightseeing during their layover a little easier.
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 June is currently the most expensive (average of $388). 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

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Other flights to Seattle

Top 9 airlines flying from Baltimore to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$126	Average$268	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$137	Average$249	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$206	Average$379	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$206	Average$312	FlexibilityNo cancel fee	On-timeN/A
Hawaiian Airlines	Cheapest$230	Average$418	FlexibilityNo cancel fee	On-time85%
Southwest	Cheapest$258	Average$495	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$276	Average$414	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$277	Average$473	FlexibilityNo cancel fee	On-time75%
Sun Country Air	Cheapest$313	Average$402	FlexibilityNo cancel fee	On-time83%

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$97+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Baltimore/Washington to Seattle/Tacoma Intl are usually found in January or September, booked 47 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

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Cheapest flights from Baltimore to SeattleExplore 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 September 11, 2025.

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 September 11, 2025.

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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.

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Everything you need to know about your flight from Baltimore to Seattle

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Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Baltimore to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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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 September 11, 2025.