Cheap flights from Boston to Baltimore from $69 BOS, PSM → BWI

Found recently, and the cheapest we hold

What have prices looked like?

Over 26 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $151 to $382.

26 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 7-night return fares leaving within 3 days of 11 Dec to compare.

Every date we hold

3 fares on 3 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $151.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 47 days, 24 Sept to 12 Nov, the cheapest one-way we saw each day was $55 to $387.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 9 Dec to compare.

Every date we hold

4 fares on 3 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $69.

Return

Fares 90 to 179 days before departure were typically 20% lower than 14 to 29 days before departure.

From the cheapest return each day between 24 Sept and 12 Nov (26 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 90 to 179 days before departure were typically 33% lower than 14 to 29 days before departure.

From the cheapest one-way each day between 24 Sept and 12 Nov (47 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Boston to Baltimore?

The cheapest return found recently is $175 with Frontier Airlines, 11 Dec to 18 Dec, found yesterday. The cheapest return we hold, of any age, is $151 with Southwest Airlines, 12 Dec to 14 Dec, found 2 days ago. The cheapest return fare on each of 3 departure dates is usually $163 to $279.

How much is a one-way flight from Boston to Baltimore?

The cheapest one-way found recently is $69 with Southwest Airlines, 9 Dec, found yesterday. The cheapest one-way fare on each of 3 departure dates is usually $77 to $104.

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

December 2026 is the cheapest month for a return, from $151, 12 Dec to 14 Dec, found 2 days ago. It is the cheapest month for a one-way too, from $69, 9 Dec, found yesterday.

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

In 26 days of prices between 24 Sept and 12 Nov, return fares 90 to 179 days before departure were typically 20% lower than 14 to 29 days before departure. In 47 days of prices between 24 Sept and 12 Nov, one-way fares 90 to 179 days before departure were typically 33% lower than 14 to 29 days before departure.

Is there a direct flight from Boston to Baltimore?

Yes, the cheapest nonstop one-way found recently is $69 with Southwest Airlines, 9 Dec, found yesterday.

How long is the flight from Boston to Baltimore?

The cheapest nonstop one-way found recently, with Southwest Airlines on 9 Dec, takes 1 h 35 min from Logan International Airport (BOS) to Baltimore/Wash International Thurgood Marshall Airport (BWI).

Which airlines have the cheapest flights from Boston to Baltimore?

Between 15 Nov and 12 Dec, Frontier Airlines has the cheapest return on 2 of the 3 departure dates we hold, and Southwest Airlines on 1. Between 9 Dec and 24 Feb 2027, Southwest Airlines has the cheapest one-way on 2 of the 3 departure dates we hold, and Frontier Airlines on 1.