$457 Cheap Flights from Baltimore (BWI) to Trenton (TTN)

View $457 flight on Mon, Dec 1, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Trenton–Mercer Airport (TTN)

Cheap Flights from Baltimore to Trenton (BWI-TTN)

Prices were available within the past 7 days and start at $457 for one-way flights and $674 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Nov 12 - Wed, Nov 19
BWI
Baltimore
TTN
Trenton
$674 Roundtrip, found 3 days ago
$674
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 12 from Baltimore to Trenton, returning Wed, Nov 19, priced at $674 found 3 days ago
American Airlines
Wed, Nov 12 - Wed, Nov 19
BWI
Baltimore
TTN
Trenton
$742 Roundtrip, found 3 days ago
$742
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 12 from Baltimore to Trenton, returning Wed, Nov 19, priced at $742 found 3 days ago
American Airlines
Wed, Nov 12 - Wed, Nov 19
BWI
Baltimore
TTN
Trenton
$746 Roundtrip, found 3 days ago
$746
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 12 from Baltimore to Trenton, returning Wed, Nov 19, priced at $746 found 3 days ago
American Airlines
Mon, Nov 10 - Tue, Nov 11
BWI
Baltimore
TTN
Trenton
$765 Roundtrip, found 4 days ago
$765
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Nov 10 from Baltimore to Trenton, returning Tue, Nov 11, priced at $765 found 4 days ago
American Airlines
Wed, Nov 12 - Wed, Nov 19
BWI
Baltimore
TTN
Trenton
$794 Roundtrip, found 3 days ago
$794
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 12 from Baltimore to Trenton, returning Wed, Nov 19, priced at $794 found 3 days ago
American Airlines
Wed, Nov 12 - Wed, Nov 19
BWI
Baltimore
TTN
Trenton
$838 Roundtrip, found 3 days ago
$838
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 12 from Baltimore to Trenton, returning Wed, Nov 19, priced at $838 found 3 days ago
American Airlines
Wed, Nov 12 - Wed, Nov 19
BWI
Baltimore
TTN
Trenton
$859 Roundtrip, found 3 days ago
$859
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 12 from Baltimore to Trenton, returning Wed, Nov 19, priced at $859 found 3 days ago
American Airlines
Wed, Nov 12 - Wed, Nov 19
BWI
Baltimore
TTN
Trenton
$867 Roundtrip, found 3 days ago
$867
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 12 from Baltimore to Trenton, returning Wed, Nov 19, priced at $867 found 3 days ago
American Airlines
Wed, Nov 12 - Wed, Nov 19
BWI
Baltimore
TTN
Trenton
$869 Roundtrip, found 3 days ago
$869
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Nov 12 from Baltimore to Trenton, returning Wed, Nov 19, priced at $869 found 3 days ago
American Airlines
Mon, Nov 10 - Tue, Nov 11
BWI
Baltimore
TTN
Trenton
$878 Roundtrip, found 4 days ago
$878
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Nov 10 from Baltimore to Trenton, returning Tue, Nov 11, priced at $878 found 4 days ago

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN) cost?
Grab a cheap one-way flight from $457 or cheap return flight from $674 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN)?
November is the least expensive month to fly from BWI to TTN. Timing your trip outside of the busy season is often the key to landing a great deal.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN)?
To find the cheapest airline that'll fly you from BWI to TTN, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN)?
You'll have to book a flight with a layover when traveling from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from BWI to TTN?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a number of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN)?
Select a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures 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.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN) last-minute?
Waiting until right before your break to book your flight from BWI to TTN often results in higher prices. While you may find some last-minute discounts, they aren't always guaranteed. Be flexible with your itinerary for the best chance of scoring a bargain.
Is it cheaper to book a BWI to TTN flight and hotel package?
Opting for a BWI to TTN flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our impressive range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Mercer Airport (TTN)?
It's generally possible to reschedule or cancel your BWI to TTN 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 if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Mercer
Roundtrip price
$674
Distance
124 mi

Book with confidence

Baltimore to Trenton Flights

The cheapest times to fly from Baltimore to Trenton

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 Trenton are during the month of November. You can find some of the cheapest flights from Baltimore to Trenton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Trenton

Sunday is one of the best days to book for cheap flights from Baltimore to Trenton: 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 Trenton

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 Trenton in 2025. You can also book with separate airlines for your outbound and return journeys, from $457 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 Trenton 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 Trenton 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.

 

Baltimore to Trenton Flights

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*Available to One Key members.