$127+ Cheap flights from Seattle to Baltimore (SEA - BWI)
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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BWI
Sep 20 — Sep 271
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to Baltimore 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.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Baltimore/Washington are usually found in February or November, booked 84 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday
Cheap flight deals from Seattle to Baltimore
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to BaltimoreExplore the most affordable flight options available from Seattle to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
Explore the most affordable flight options available from Seattle to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:23 pm -
Nonstop5h 07m
Mon 9/217:15 pm -
Nonstop5h 42m
Deal found 8/19![Alaska Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:00 pm -
2 stops25h 34m
Mon 10/2612:21 pm -
1 stop7h 52m
Deal found 8/16![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:15 pm -
2 stops21h 15m
Mon 10/1212:21 pm -
1 stop7h 57m
Deal found 8/19![Multiple Airlines logo]()
$367
This SmartFares deal was found by Cheapflights users on 8/16. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:57 am -
Nonstop5h 11m
Wed 10/77:02 am -
Nonstop5h 44m
Deal found 8/16![Alaska Airlines logo]()
$370
This Faresmojo deal was found by Cheapflights users on 8/16. 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 Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:10 am -
1 stop9h 10m
Tue 9/2210:20 am -
Nonstop5h 40m
Deal found 8/16![JetBlue logo]()
$373
This Kissandfly.com deal was found by Cheapflights users on 8/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:15 pm -
2 stops21h 15m
Wed 9/2312:45 pm -
2 stops23h 57m
Deal found 8/18![Frontier logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:00 pm -
2 stops25h 34m
Fri 10/3011:33 am -
1 stop8h 30m
Deal found 8/17![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:15 pm -
2 stops41h 31m
Mon 10/1212:21 pm -
1 stop7h 57m
Deal found 8/20![Multiple Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:15 pm -
2 stops21h 15m
Sun 10/411:45 am -
1 stop8h 28m
Deal found 8/19![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:00 pm -
2 stops21h 17m
Mon 10/1212:21 pm -
1 stop7h 57m
Deal found 8/19![Multiple Airlines logo]()
$386
Best flights from Seattle to BaltimoreDiscover carefully curated flight deals from Seattle to Baltimore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
Discover carefully curated flight deals from Seattle to Baltimore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 10/149:18 pm -
Nonstop5h 02m
Tue 10/207:02 am -
Nonstop5h 44m
Deal found 8/18![Alaska Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 8/19. 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.
Fri 9/1810:30 pm -
Nonstop5h 00m
Thu 9/241:10 pm -
1 stop8h 10m
Deal found 8/19![Southwest logo]()
$407
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:55 pm -
1 stop8h 50m
Sun 10/257:00 am -
1 stop8h 52m
Deal found 8/20![Delta logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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.
Fri 9/1810:23 pm -
Nonstop5h 07m
Tue 9/227:15 pm -
Nonstop5h 42m
Deal found 8/18![Alaska Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 8/18. 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 9/2411:05 pm -
1 stop9h 50m
Tue 10/63:55 pm -
1 stop9h 45m
Deal found 8/18![Southwest logo]()
$417
This Delta deal was found by Cheapflights users on 8/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:00 am -
1 stop7h 55m
Wed 10/77:21 pm -
1 stop7h 38m
Deal found 8/16![Delta logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 8/16. 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.
Wed 9/306:51 pm -
1 stop17h 49m
Wed 10/76:15 pm -
Nonstop5h 45m
Deal found 8/16![Alaska Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 8/20. 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 10/15:10 pm -
1 stop9h 35m
Sun 10/46:25 am -
1 stop9h 10m
Deal found 8/20![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 8/20. 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 11/191:35 pm -
1 stop8h 10m
Fri 11/277:35 am -
1 stop8h 40m
Deal found 8/20![Southwest logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 8/19. 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.
Mon 10/199:18 pm -
Nonstop5h 02m
Sat 10/247:02 am -
Nonstop5h 44m
Deal found 8/19![Alaska Airlines logo]()
$422
Last-minute flights from Seattle to BaltimoreDiscover last-minute flight deals from Seattle to Baltimore. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Baltimore. Data last updated August 21, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:15 pm -
2 stops41h 31m
Mon 10/1212:21 pm -
1 stop7h 57m
Deal found 8/20![Multiple Airlines logo]()
$384
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:23 pm -
Nonstop5h 07m
Mon 9/217:15 pm -
Nonstop5h 42m
Deal found 8/19![Alaska Airlines logo]()
$349
This Faresmojo deal was found by Cheapflights users on 8/16. 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 Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:10 am -
1 stop9h 10m
Tue 9/2210:20 am -
Nonstop5h 40m
Deal found 8/16![JetBlue logo]()
$373
This Kissandfly.com deal was found by Cheapflights users on 8/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:15 pm -
2 stops21h 15m
Wed 9/2312:45 pm -
2 stops23h 57m
Deal found 8/18![Frontier logo]()
$377
This Kissandfly.com deal was found by Cheapflights users on 8/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:15 pm -
2 stops21h 15m
Wed 9/237:50 am -
Nonstop5h 39m
Deal found 8/18![Multiple Airlines logo]()
$398
This Travelocity deal was found by Cheapflights users on 8/19. 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.
Wed 9/2310:23 pm -
Nonstop5h 07m
Sun 9/277:50 am -
Nonstop5h 39m
Deal found 8/19![Alaska Airlines logo]()
$399
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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.
Thu 9/2410:23 pm -
Nonstop5h 07m
Thu 10/17:15 pm -
Nonstop5h 42m
Deal found 8/17![Alaska Airlines logo]()
$405
This Southwest deal was found by Cheapflights users on 8/18. 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.
Fri 9/2510:30 pm -
Nonstop5h 00m
Sun 9/2712:00 pm -
Nonstop5h 40m
Deal found 8/18![Southwest logo]()
$397
This SmartFares deal was found by Cheapflights users on 8/16. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:57 am -
Nonstop5h 11m
Wed 10/77:02 am -
Nonstop5h 44m
Deal found 8/16![Alaska Airlines logo]()
$370
One-way flights from Seattle to BaltimoreSearch for one-way flight options from Seattle to Baltimore. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
Search for one-way flight options from Seattle to Baltimore. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:00 pm -
2 stops25h 34m
Deal found 8/17![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:15 pm -
2 stops23h 49m
Deal found 8/17![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:25 pm -
2 stops13h 15m
Deal found 8/16![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:00 pm -
2 stops25h 34m
Deal found 8/17![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:15 pm -
2 stops21h 15m
Deal found 8/18![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:15 pm -
2 stops21h 15m
Deal found 8/18![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:15 pm -
2 stops41h 31m
Deal found 8/18![Frontier logo]()
$136
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:03 am -
Nonstop5h 09m
Deal found 8/19![Alaska Airlines logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:25 pm -
2 stops13h 15m
Deal found 8/17![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:00 pm -
2 stops25h 34m
Deal found 8/17![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:00 pm -
2 stops25h 34m
Deal found 8/17![Frontier logo]()
$147
Find flight deals from Seattle to Baltimore
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Baltimore (BWI). 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 August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $349 (Priceline) |
One-way from | $127 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $442 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Baltimore 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 7,457,451 searches. Data last updated August 21, 2026.
Use the filters below to find and compare flights from Seattle to Baltimore that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Wed 10/14
9:18 pm-5:20 am
Nonstop5h 02m
Baltimore/Washington
Tue 10/20
7:02 am-9:46 am
Nonstop5h 44m
$397
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Fri 9/18
10:23 pm-6:30 am
Nonstop5h 07m
Baltimore/Washington
Tue 9/22
7:15 pm-9:57 pm
Nonstop5h 42m
$397
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Fri 9/18
10:30 pm-6:30 am
Nonstop5h 00m
Baltimore/Washington
Thu 9/24
1:10 pm-6:20 pm
1 stop8h 10m
$407
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Wed 9/30
6:51 pm-3:40 pm
1 stop17h 49m
Baltimore/Washington
Wed 10/7
6:15 pm-9:00 pm
Nonstop5h 45m
$407
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Fri 10/23
5:55 pm-5:45 am
1 stop8h 50m
Baltimore/Washington
Sun 10/25
7:00 am-12:52 pm
1 stop8h 52m
$417
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Thu 9/24
11:05 pm-11:55 am
1 stop9h 50m
Baltimore/Washington
Tue 10/6
3:55 pm-10:40 pm
1 stop9h 45m
$417
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Wed 9/30
6:00 am-4:55 pm
1 stop7h 55m
Baltimore/Washington
Wed 10/7
7:21 pm-11:59 pm
1 stop7h 38m
$417
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Thu 10/1
5:10 pm-5:45 am
1 stop9h 35m
Baltimore/Washington
Sun 10/4
6:25 am-12:35 pm
1 stop9h 10m
$417
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Thu 11/19
1:35 pm-12:45 am
1 stop8h 10m
Baltimore/Washington
Fri 11/27
7:35 am-1:15 pm
1 stop8h 40m
$417
SeattleBaltimore
SEA Seattle/Tacoma Intl - BWI Baltimore/Washington
SEABWI
Seattle/Tacoma Intl
Mon 10/19
9:18 pm-5:20 am
Nonstop5h 02m
Baltimore/Washington
Sat 10/24
7:02 am-9:46 am
Nonstop5h 44m
$422
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Seattle to Baltimore
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 Seattle to Baltimore in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Baltimore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Baltimore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Baltimore flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Baltimore 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 Seattle-Baltimore 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 Seattle to Baltimore
Have a flexible travel schedule? Discover the best time to fly to Baltimore from Seattle with our price prediction graph.
SEA-BWI
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 Seattle to Baltimore
Prices
Airlines
How far ahead should I book a flight from Seattle to Baltimore?
The best time to book flights from Seattle to Baltimore is 83 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 Seattle to Baltimore?
Currently, February is the cheapest month in which you can book a flight from Seattle to Baltimore (average of $337). Flying from Seattle to Baltimore in July is currently the most expensive (average of $568). 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 SEA to BWI?
Find hourly flight availability from Seattle to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 21, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Baltimore as you normally would.
The best insider tips for Seattle to Baltimore flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Baltimore trip
Our travel experts
Reviews of airlines servicing Baltimore
Get insights into the airlines that provide service to Baltimore. 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 Baltimore. Reviews last updated August 21, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Seattle to Baltimore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Related info for your journey
Find useful and relevant information for your journey from Seattle to Baltimore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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
Complete your trip
Flights by cabin class
Other flight options
Other flights from Seattle
Popular flights
Alternative routes for Seattle to Baltimore
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Baltimore by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Baltimore by cabin class
Find flights from Seattle to Baltimore, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Baltimore flights
Browse other Seattle and Baltimore flight options. Last updated on August 21, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on August 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Seattle to Baltimore
Discover the top 6 airlines that operate flights from Seattle to Baltimore. 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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$108 | Average$335 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$178 | Average$398 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$178 | Average$356 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$187 | Average$423 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$226 | Average$480 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$251 | Average$449 | FlexibilityNo cancel fee | On-time75% |