$39 Cheap Flights from Boston (BOS) to Baltimore (BWI)

View $39 flight on Wed, May 21, 2025Opens in a new window
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Cheap Flights from Boston to Baltimore (BOS-BWI)

Prices were available within the past 7 days and start at $39 for one-way flights and $77 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, May 20 - Wed, May 21
BOS
Boston
BWI
Baltimore
$77 Roundtrip, just found
$77
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, May 20 from Boston to Baltimore, returning Wed, May 21, priced at $77 just found
Spirit Airlines
Sat, May 24 - Mon, May 26
BOS
Boston
BWI
Baltimore
$102 Roundtrip, just found
$102
Roundtrip
just found
Select Spirit Airlines flight, departing Sat, May 24 from Boston to Baltimore, returning Mon, May 26, priced at $102 just found
Spirit Airlines
Mon, May 12 - Wed, May 21
BOS
Boston
BWI
Baltimore
$113 Roundtrip, found 1 hour ago
$113
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Mon, May 12 from Boston to Baltimore, returning Wed, May 21, priced at $113 found 1 hour ago
Spirit Airlines
Fri, May 9 - Tue, May 20
BOS
Boston
BWI
Baltimore
$113 Roundtrip, found 8 hours ago
$113
Roundtrip
found 8 hours ago
Select Spirit Airlines flight, departing Fri, May 9 from Boston to Baltimore, returning Tue, May 20, priced at $113 found 8 hours ago
Spirit Airlines
Tue, Jun 3 - Wed, Jun 11
BOS
Boston
BWI
Baltimore
$119 Roundtrip, found 5 hours ago
$119
Roundtrip
found 5 hours ago
Select Spirit Airlines flight, departing Tue, Jun 3 from Boston to Baltimore, returning Wed, Jun 11, priced at $119 found 5 hours ago
Spirit Airlines
Wed, May 21 - Fri, May 23
BOS
Boston
BWI
Baltimore
$122 Roundtrip, just found
$122
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, May 21 from Boston to Baltimore, returning Fri, May 23, priced at $122 just found
Frontier Airlines
Wed, May 14 - Wed, May 21
BOS
Boston
BWI
Baltimore
$135 Roundtrip, found 1 hour ago
$135
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, May 14 from Boston to Baltimore, returning Wed, May 21, priced at $135 found 1 hour ago
Southwest Airlines
Thu, May 15 - Wed, May 21
BOS
Boston
BWI
Baltimore
$142 Roundtrip, found 1 hour ago
$142
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Thu, May 15 from Boston to Baltimore, returning Wed, May 21, priced at $142 found 1 hour ago
Delta
Sat, May 24 - Tue, May 27
BOS
Boston
BWI
Baltimore
$161 Roundtrip, found 1 hour ago
$161
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, May 24 from Boston to Baltimore, returning Tue, May 27, priced at $161 found 1 hour ago
American Airlines
Sat, May 24 - Tue, Jun 3
BOS
Boston
BWI
Baltimore
$181 Roundtrip, found 1 hour ago
$181
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, May 24 from Boston to Baltimore, returning Tue, Jun 3, priced at $181 found 1 hour ago

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) cost?
You’ll find cheap return tickets from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) starting from $77. Grab your seat and take off on your trip. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Spirit Airlines flight leaving BOS on May 21 2025 and touching down at BWI. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from BOS to BWI?
The cheapest flights from BOS to BWI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Enjoy an uninterrupted journey to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). 3 airlines operate direct flights from Logan Intl. Airport (BOS), including:

  • Southwest Airlines
  • Delta Air Lines
  • Spirit Airlines

What is the cheapest airline that flies from BOS to BWI?
Right now, the cheapest airline operating one-way flights from BOS to BWI is Spirit Airlines. You can take off on this route from $39. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BOS on May 21 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
With an average of 10 direct flights that operate from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) every day, you’ll be on your way in no time.
What are the most popular departure times for flights from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
More passengers fly between BOS and BWI at 5 PM than at any other point in the day. Rather skip the crowds? Travel outside of rush hours and you’re likely to save on your fare as well.
What day of the week has the most flights from BOS to BWI?
Friday offers the most flights from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI). Consider leaving on this day and you’ll have the best chance of finding a departure that fits your itinerary.
What is the earliest flight from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Logan Intl. Airport (BOS)’s earliest flight to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) leaves at approximately 5:30AM UTC-5. With a flight time of 1h 40m, you’ll arrive at around 7:10AM UTC-5.
How long does it take to fly from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
It takes roughly 1 hour and 40 minutes to fly the 370 mi from BOS to BWI.
What is the best time to fly from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
To avoid possible delays on the Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) route, travel before 3 PM. Departures after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Baltimore from Logan Intl. Airport (BOS)?
Logan Intl. Airport (BOS) has direct flights to Baltimore. These are a few of the airports you can fly straight to:

  • Ronald Reagan Washington National Airport (DCA)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)
  • Washington Dulles Intl. Airport (IAD)

Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) last-minute?
Booking your ticket from BOS to BWI right before your trip is usually more expensive. However, if you’re flexible with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a BOS to BWI flight and hotel package?
You’ll generally save money by booking a BOS to BWI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one place. Once you’ve selected your preferred flights and accommodations, consider other add-ons like activities, car rentals and tours.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
It’s generally possible to cancel or reschedule your BOS to BWI flight. However, if it’s been more than 24 hours since booking, additional charges may apply. Check your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find more information on our Customer Service portal.
*Available to One Key members.