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

View $39 flight on Wed, May 21, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Logan International Airport (BOS)

Find available prices by choosing your travel dates.

Cheap Flights from Baltimore to Boston (BWI-BOS)

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
BWI
Baltimore
BOS
Boston
$77 Roundtrip, found 1 hour ago
$77
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Tue, May 20 from Baltimore to Boston, returning Wed, May 21, priced at $77 found 1 hour ago
Spirit Airlines
Mon, May 19 - Tue, May 20
BWI
Baltimore
BOS
Boston
$90 Roundtrip, just found
$90
Roundtrip
just found
Select Spirit Airlines flight, departing Mon, May 19 from Baltimore to Boston, returning Tue, May 20, priced at $90 just found
Spirit Airlines
Thu, May 29 - Wed, Jun 4
BWI
Baltimore
BOS
Boston
$102 Roundtrip, just found
$102
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, May 29 from Baltimore to Boston, returning Wed, Jun 4, priced at $102 just found
Spirit Airlines
Tue, May 20 - Wed, May 21
BWI
Baltimore
BOS
Boston
$110 Roundtrip, found 1 hour ago
$110
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Tue, May 20 from Baltimore to Boston, returning Wed, May 21, priced at $110 found 1 hour ago
Spirit Airlines
Wed, May 21 - Fri, May 23
BWI
Baltimore
BOS
Boston
$113 Roundtrip, just found
$113
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, May 21 from Baltimore to Boston, returning Fri, May 23, priced at $113 just found
Spirit Airlines
Wed, May 21 - Sat, May 24
BWI
Baltimore
BOS
Boston
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, May 21 from Baltimore to Boston, returning Sat, May 24, priced at $119 just found
American Airlines
Sun, May 25 - Tue, Jun 3
BWI
Baltimore
BOS
Boston
$129 Roundtrip, found 3 hours ago
$129
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sun, May 25 from Baltimore to Boston, returning Tue, Jun 3, priced at $129 found 3 hours ago
Delta
Sat, May 17 - Tue, May 20
BWI
Baltimore
BOS
Boston
$132 Roundtrip, just found
$132
Roundtrip
just found
Select Delta flight, departing Sat, May 17 from Baltimore to Boston, returning Tue, May 20, priced at $132 just found
Southwest Airlines
Sat, May 24 - Tue, Jun 3
BWI
Baltimore
BOS
Boston
$134 Roundtrip, found 1 hour ago
$134
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, May 24 from Baltimore to Boston, returning Tue, Jun 3, priced at $134 found 1 hour ago
Frontier Airlines
Tue, May 20 - Mon, Jun 2
BWI
Baltimore
BOS
Boston
$143 Roundtrip, just found
$143
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, May 20 from Baltimore to Boston, returning Mon, Jun 2, priced at $143 just found
Flights from Baltimore (BWI) to Boston (BOS)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$77
Distance
368 mi

Baltimore to Boston Flights

The cheapest times to fly from Baltimore to Boston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Boston are during the month of May. You can find some of the cheapest flights from Baltimore to Boston with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Baltimore to Boston

Sunday is one of the best days to book for cheap flights from Baltimore to Boston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Baltimore to Boston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $39 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Boston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Boston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS) cost?
Cheap return flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS) start from $77. 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 BWI on May 14 2025 and touching down at BOS. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from BWI to BOS?
The cheapest flights from BWI to BOS 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS)?
Avoid the layovers and travel nonstop to Logan Intl. Airport (BOS) from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) with 3 carriers, including:

  • Southwest Airlines
  • Delta Air Lines
  • Spirit Airlines

What is the cheapest airline that flies from BWI to BOS?
Book a flight from BWI to BOS with Spirit Airlines. This airline currently has the cheapest one-way fare on this route, starting at $39. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BWI on May 21 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS)?
With, on average, 9 nonstop flights departing from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS) daily, you’ll be taking off on vacation soon enough.
What are the most popular departure times for flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS)?
More travelers fly between BWI and BOS at 8 AM than at any other point in the day. Rather go when it’s quieter? Pick a flight outside the busiest times and you could save on your ticket as well.
What day of the week has the most flights from BWI to BOS?
Thursday has the most flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS). Consider taking off on this day and you’ll have a greater chance of finding a departure that fits your schedule.
What is the earliest flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS)?
Baltimore Washington Intl. Thurgood Marshall Airport (BWI)’s earliest flight to Logan Intl. Airport (BOS) takes off at approximately 6:15AM UTC-5. With a flight time of 1h 40m, you’ll land at around 7:55AM UTC-5.
How long does it take to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS)?
The average flight time from BWI to BOS is 1 hour and 31 minutes, covering a distance of 370 mi.
What airline has the least delays from BWI to BOS?
Consider traveling with United Airlines if you’d like to fly straight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS) without any delays. This carrier has the strongest track record for punctuality, with an on-time score of 100%. Want to get notified of any changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS)?
Select a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS) that leaves before 3 PM to reduce the likelihood of delays. Departures later than this are on average 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 Boston from Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Baltimore Washington Intl. Thurgood Marshall Airport (BWI) has direct flights to Boston. Here are some of the airports you can fly straight to:

  • Logan Intl. Airport (BOS)
  • T.F. Green Airport (PVD)
  • Manchester-Boston Regional Airport (MHT)

Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS) last-minute?
Last-minute fares from BWI to BOS are generally more expensive. For the lowest rates, start searching for flights ahead of time. That said, if your travel plans are flexible, it’s possible to find a cheap ticket right before your journey.
Is it cheaper to book a BWI to BOS flight and hotel package?
You’ll typically save money by securing a BWI to BOS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one place. After selecting your ideal accommodations and flights, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Logan Intl. Airport (BOS)?
You can usually reschedule or cancel your BWI to BOS flight. However, if it’s been more than 24 hours since booking, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.