Spirit's Big Front Seats offer 11 inches more legroom, ideal for short flights.
Use Spirit's self-service bag drop for a faster airport experience.

Most accurate provider | Justfly.com 3 stars |
|---|---|
Most trusted provider | Justfly.com 3 stars |
Round-trip from | $208 (Spirit) |
One-way from | $98 (Kiwi.com) |
Popular in | November |
Cheapest in | February |
Average price | $215 |
Fly from
Fly to
Route
Depart
Return
Price
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Sat 1/17
8:35 pm-10:05 pm
Nonstop1h 30m
Boston Logan Intl
Fri 1/23
9:35 am-11:15 am
Nonstop1h 40m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Fri 3/13
10:53 am-12:25 pm
Nonstop1h 32m
Boston Logan Intl
Sun 3/15
8:28 am-10:13 am
Nonstop1h 45m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Fri 1/23
7:10 am-8:50 am
Nonstop1h 40m
Boston Logan Intl
Sun 1/25
5:50 am-7:35 am
Nonstop1h 45m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Sun 1/18
12:50 pm-2:20 pm
Nonstop1h 30m
Boston Logan Intl
Sun 1/18
3:20 pm-5:00 pm
Nonstop1h 40m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Sun 2/8
10:55 am-12:25 pm
Nonstop1h 30m
Boston Logan Intl
Sun 2/8
5:50 pm-7:30 pm
Nonstop1h 40m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Thu 1/15
11:30 am-11:19 pm
1 stop11h 49m
Boston Logan Intl
Sun 1/18
3:43 pm-11:47 pm
1 stop8h 04m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Wed 2/25
7:55 pm-9:29 pm
Nonstop1h 34m
Boston Logan Intl
Fri 2/27
5:29 am-10:32 am
1 stop5h 03m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Fri 1/16
4:44 pm-11:19 pm
1 stop6h 35m
Boston Logan Intl
Sun 1/18
3:43 pm-10:27 am
2 stops18h 44m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Fri 2/6
5:25 pm-11:51 pm
1 stop6h 26m
Boston Logan Intl
Mon 2/9
8:25 am-10:14 am
Nonstop1h 49m
BaltimoreBoston
BWI - BOS
BWIBOS
Baltimore/Washington
Sat 1/10
4:55 pm-6:36 pm
Nonstop1h 41m
Boston Logan Intl
Wed 1/14
5:29 am-10:27 am
1 stop4h 58m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star |
Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from Baltimore to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, March is the cheapest month in which you can book a flight from Baltimore to Boston (average of $43). Flying from Baltimore to Boston in September is currently the most expensive (average of $114). 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.
A simple way to save on the total cost of your ticket is to fly from Baltimore to Boston in the evening. If you’re flexible enough to do this you can expect to save up to 64% on your trip compared to booking a flight in the afternoon.
Travelers seeking maximum savings on their Baltimore to Boston flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 17% of weekly flights between Baltimore and Boston have experienced delays in the past year, with the average delay time being 124 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Wednesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Delta have had the lowest number of delays on this route, with just 14% of flights being delayed.
Overall
Crew
Comfort
Entertainment
Food
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Crew
Comfort
Entertainment
Food
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Crew
Comfort
Entertainment
Food
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Crew
Comfort
Entertainment
Food
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Crew
Comfort
Entertainment
Food
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$47 | Average$109 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$99 | Average$228 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$127 | Average$237 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$161 | Average$269 | FlexibilityNo cancel fee | On-time63% |