- Must visit
National Air and Space Museum
This world-class museum presents aviation and space history through iconic aircraft, spacecraft, and hands-on science exhibits.
Cheapest price
$86
Average price
$190
Fastest journey
2 h 21 m
Average duration
2 h 25 m
Trains per day
29
Distance
260 km
The best way to find a cheap train ticket from Princeton, NJ to Washington, DC is to book your journey as far in advance as possible and to avoid traveling at rush hour.
The average ticket from Princeton, NJ to Washington, DC will cost around $190 if you buy it on the day, but the cheapest tickets can be found for only $86.
Of the 29 trains that leave Princeton, NJ for Washington, DC on Fri, Jul 31, 26 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.
On Fri, Jul 31 the direct trains cover the 260 km distance in an average of 2 h 25 m but if you time it right, some trains will get you there in just 2 h 21 m .
On Fri, Jul 31 the slowest trains will take 2 h 30 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.
137 Northeast Regional
175 Northeast Regional
111 Northeast Regional
111 Northeast Regional
67 Northeast Regional
141 Northeast Regional
113 Northeast Regional
55 Vermonter
111 Northeast Regional
175 Northeast RegionalOmio recommends booking the train as it is the most popular option from Princeton, NJ to Washington, DC among Omio's users. If you are prioritising price take the bus with prices starting from $25. For those with little time consider booking a flight which can get you there in 1h 30m. In case you are seeking to minimise your carbon footprint the train is your best bet as it emits only 0.1 - 0.2kg. The ticket price range depends on the travel mode: a bus costs an average of $25, and a flight costs an average of $68.
Distance: 161 miles (260 km)
Most popular Train | Bus | Flight | Driving |
|---|---|---|---|
$48 Average price | $35 Average price Cheapest | $181 Average price | $47 Average price (fuel + tolls) |
3h 11m Average total duration 2h 41m Onboard + 30m Additional time* | 4h 26m Average total duration 3h 56m Onboard + 30m Additional time* | 4h 30m Average total duration Fastest 1h 30m Onboard + 3h 0m Additional time* | 3h 19m Average total duration (door-to-door) |
0.1 - 0.2kg CO2 emissions Lowest | - CO2 emissions | 0.8 - 1.6kg CO2 emissions | - CO2 emissions |
Direct Options | Direct Options | Direct Options | Direct Options |
Additional time: Average total travel duration to departure point, security checks and transfers.
This is compared to other travel options from Princeton, NJ to Washington, DC:
A bus is $12 less than a train for this route with tickets for a train from Princeton, NJ to Washington, DC costing on average $48.
A bus is $146 less than a flight for this route with tickets for a flight from Princeton, NJ to Washington, DC costing on average $181.
Other travel options to Washington, DC take longer:
Train takes on average 2h 41m.
Bus takes on average 3h 56m.
You'll arrive about 38m sooner (2h 41m by train vs 3h 19m by car). Tickets start at around $48 compared to roughly $47 in fuel and tolls — so you're paying a bit more, but getting hours of your day back, a city-centre arrival, and the freedom to work or relax instead of drive.
Direct services run with Amtrak.
Driving makes more sense if you're travelling as a group (where fuel costs split several ways), want to stop along the way, or need a car once you arrive.
The table below shows live departures for Princeton, NJ to Washington, DC trains for today, Thursday, July 30. You can also manually refresh the results below to see updated train journeys.
| Provider | Departs | Duration | Arrives | Transfers | Tickets |
|---|---|---|---|---|---|
95 Northeast Regional | 11:29 AM Trenton Transit Center, Trenton, NJ | 2h36 | 2:05 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
119 Northeast Regional | 12:14 PM Trenton Transit Center, Trenton, NJ | 2h32 | 2:46 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
125 Northeast Regional | 12:30 PM Trenton Transit Center, Trenton, NJ | 2h41 | 3:11 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
131 Northeast Regional | 1:06 PM Princeton Junction Station at West Windsor, West Windsor Township, NJ | 2h42 | 3:48 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
171 Northeast Regional | 1:46 PM Trenton Transit Center, Trenton, NJ | 2h39 | 4:25 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
19 Crescent | 3:01 PM Trenton Transit Center, Trenton, NJ | 2h46 | 5:47 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
97 Silver Meteor | 3:34 PM Trenton Transit Center, Trenton, NJ | 2h46 | 6:20 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
85 Northeast Regional | 4:02 PM Trenton Transit Center, Trenton, NJ | 2h37 | 6:39 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
129 Northeast Regional | 5:19 PM Princeton Junction Station at West Windsor, West Windsor Township, NJ | 2h42 | 8:01 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
129 Northeast Regional | 5:30 PM Trenton Transit Center, Trenton, NJ | 2h31 | 8:01 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
193 Northeast Regional | 6:45 PM Trenton Transit Center, Trenton, NJ | 2h37 | 9:22 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
137 Northeast Regional | 7:24 PM Trenton Transit Center, Trenton, NJ | 2h31 | 9:55 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
55 Vermonter | 7:38 PM Trenton Transit Center, Trenton, NJ | 2h24 | 10:02 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
175 Northeast Regional | 8:49 PM Trenton Transit Center, Trenton, NJ | 2h30 | 11:19 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
| Friday, July 31 | |||||
67 Northeast Regional | 12:22 AM Trenton Transit Center, Trenton, NJ | 6h32 | 6:54 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
111 Northeast Regional | 5:43 AM Princeton Junction Station at West Windsor, West Windsor Township, NJ | 2h39 | 8:22 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
111 Northeast Regional | 5:53 AM Trenton Transit Center, Trenton, NJ | 2h29 | 8:22 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
89 Palmetto · 51 Cardinal | 6:56 AM Trenton Transit Center, Trenton, NJ | 3h18 | 10:14 AM Washington Union Station, Washington, DC | 1 transfer | |
89 Palmetto | 6:56 AM Trenton Transit Center, Trenton, NJ | 2h44 | 9:40 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
113 Northeast Regional | 7:30 AM Trenton Transit Center, Trenton, NJ | 2h23 | 9:53 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
51 Cardinal | 7:42 AM Trenton Transit Center, Trenton, NJ | 2h32 | 10:14 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
79 Carolinian | 8:07 AM Princeton Junction Station at West Windsor, West Windsor Township, NJ | 5h13 | 1:20 PM Alexandria Station, Alexandria, VA | 0 transfersDirect | |
79 Carolinian | 8:07 AM Princeton Junction Station at West Windsor, West Windsor Township, NJ | 2h55 | 11:02 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
641 Keystone Service · 185 Northeast Regional | 8:13 AM Princeton Junction Station at West Windsor, West Windsor Township, NJ | 4h39 | 12:52 PM Washington Union Station, Washington, DC | 1 transfer | |
641 Keystone Service · 171 Northeast Regional | 8:13 AM Princeton Junction Station at West Windsor, West Windsor Township, NJ | 9h07 | 5:20 PM Alexandria Station, Alexandria, VA | 1 transfer | |
79 Carolinian | 8:19 AM Trenton Transit Center, Trenton, NJ | 2h43 | 11:02 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
183 Northeast Regional | 8:28 AM Trenton Transit Center, Trenton, NJ | 2h36 | 11:04 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
141 Northeast Regional | 9:20 AM Trenton Transit Center, Trenton, NJ | 2h21 | 11:41 AM Washington Union Station, Washington, DC | 0 transfersDirect | |
185 Northeast Regional | 10:22 AM Trenton Transit Center, Trenton, NJ | 2h30 | 12:52 PM Washington Union Station, Washington, DC | 0 transfersDirect | |
This is the last train of the day. | |||||
Find all the dates and times for this journey
Compare bus, train, and flight prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.
Trains from Princeton, NJ to Washington, DC run on average 28 times per day, taking around 2h 41m. Cheap train tickets for this journey start at $12 if you book in advance.
There are 26 trains per day. The earliest train runs at 00:20, the last at 23:23. The fastest train covers the 161 miles (260 km) distance in 2h 24m.
Distance 161 miles (260 km) |
Average train duration 2h 41m |
Cheapest ticket price $12 |
Trains per day 28 |
Direct trains 26 |
Fastest train 2h 24m |
First train 12:20 AM |
Last train 11:23 PM |
Cheapest Month Feb |
Cheapest Day Tue |
High Season Jul - Sep |
Low Season Jan - Mar |
Busiest Day Fri |
Least Busy Day Wed |
Best time to book 49 days |
Discover the best of Washington, DC — top attractions, local food, transport tips, budget advice, and currency essentials. Plan your perfect Washington, DC trip today.
This world-class museum presents aviation and space history through iconic aircraft, spacecraft, and hands-on science exhibits.
Housed in a Beaux-Arts building, this museum explores natural wonders with dinosaurs, gems, fossils, and global biodiversity.
A landmark museum documenting African American history and culture through powerful exhibitions, artifacts, and storytelling.
The National Mall is Washington's grand civic promenade, lined with museums, memorials, and classic views ideal for first-time visitors.
Georgetown charms with historic streets, rowhouses, waterfront paths, and independent shops that make it one of the city's best walking areas.
The Tidal Basin loop offers famous cherry blossoms, water views, and easy access to several of Washington's most iconic memorials.
Half-smoke sausage, usually smoked pork and beef, served on a bun with chili, mustard, and onions. It is DC's signature street food, strongly tied to Ben's Chili Bowl.
Jumbo slice is an oversized late-night pizza slice popular in Adams Morgan. It is a recognizable DC nightlife food known for its huge foldable portions.
Mumbo sauce is a sweet tangy red sauce commonly served with fried chicken and wings at DC carryouts. It is a beloved local condiment with roots in Black DC food culture.
Acclaimed fine-dining restaurant focused on Mid-Atlantic ingredients and refined tasting menus in an elegant, contemporary dining room.
Polished seafood institution at the municipal fish market, best known for regional oysters, crab cakes, and classic Chesapeake flavors.
Historic casual landmark famous for half-smokes, chili, and a classic diner feel. A must for trying DC's best-known street food tradition.
DC is pricier than many US cities. Hotels and dining run high in central areas, but Metro and many free museums help balance daily travel costs.
Tip 18-20% at restaurants, more for great service. Taxis usually 10-15%. Cafes: round up or add $1-2.
Find answers to the most common questions about traveling from Princeton, NJ to Washington, DC by train. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest train, the cheapest option, or tips for making the most of your visit at Washington, DC, this guide helps you travel smarter and with confidence.

Most Princeton, NJ to Washington, DC trains use the Trenton Transit Center to Union Station station pair. Use this guide to compare Princeton, NJ and Washington, DC train stations on this route, check city-centre transport, alongside checking practicalities like train station facilities and services.
Union Station is 2 km from Washington city centre. Public transport options include:
Union Station has practical services for this route, including Wifi, Lockers, Parking, Dining, ATM, Taxis, Accessibility, Hotel, Ticket Office, Bike Parking, Bike Rental, Car Rental, and Information Desk.
Food options include: Shake Shack, McDonald’s, Starbucks, Potbelly Sandwich Shop, Chopt Creative Salad Co., Chipotle Mexican Grill, Thunder Grill, Johnny Rockets, Jamba Juice, Ladurée Union Station, & many more
Free Wi-Fi in the station courtesy of Amtrak. ATMs are there are 2 ATM machines located on Level G.
The ticket office is open Mon - Fri: 04:30 - 22:00, Sat - Sun: 05:00 - 22:00. Information desks are located on the train concourse of Level G near the Amtrak Waiting Area.
Luggage storage is amtrak provides temporary luggage storage for $10 per bag for 24 hours for customers holding Amtrak tickets.
Available at Union Station: Parking, Taxis.
Available at Union Station: Bike Parking, Bike Rental, Car Rental.
Accessibility facilities are available at Union Station: Elevators, escalators, wheelchair access. Accessible facilities including restrooms, parking, platforms, ticket office, waiting room.
Nearby hotels include Hyatt Recency Washington On Capitol Hill, Phoenix Park Hotel, Kimpton George Hotel.
Here are some other resources that might have the information you need