Flights from Washington to Plainsboro

Cheapest flights from Washington

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Aug 22 - Sun, Aug 24

IAD

Washington Dulles Intl.

EWR

Newark Liberty Intl. Airport

$138 Roundtrip, found 1 day ago

$138

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $138 found 1 day ago

Fri, Aug 22 - Sun, Aug 24

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$138 Roundtrip, found 1 day ago

$138

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $138 found 1 day ago

Fri, Aug 15 - Sat, Aug 16

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$147 Roundtrip, found 3 days ago

$147

Roundtrip

found 3 days ago

Select United flight, departing Fri, Aug 15 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sat, Aug 16, priced at $147 found 3 days ago

Fri, Aug 22 - Sun, Aug 24

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$163 Roundtrip, found 1 day ago

$163

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $163 found 1 day ago

Fri, Aug 15 - Sat, Aug 16

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$172 Roundtrip, found 3 days ago

$172

Roundtrip

found 3 days ago

Select United flight, departing Fri, Aug 15 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sat, Aug 16, priced at $172 found 3 days ago

Fri, Aug 15 - Sat, Aug 16

IAD

Washington Dulles Intl.

EWR

Newark Liberty Intl. Airport

$179 Roundtrip, found 3 days ago

$179

Roundtrip

found 3 days ago

Select United flight, departing Fri, Aug 15 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Sat, Aug 16, priced at $179 found 3 days ago

Fri, Aug 22 - Sun, Aug 24

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$182 Roundtrip, found 1 day ago

$182

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $182 found 1 day ago

Fri, Aug 22 - Sun, Aug 24

IAD

Washington Dulles Intl.

EWR

Newark Liberty Intl. Airport

$188 Roundtrip, found 1 day ago

$188

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $188 found 1 day ago

Thu, Dec 4 - Sat, Dec 6

BWI

Baltimore Washington Intl. Thurgood Marshall

EWR

Newark Liberty Intl. Airport

$189 Roundtrip, found 9 hours ago

$189

Roundtrip

found 9 hours ago

Select Spirit Airlines flight, departing Thu, Dec 4 from Baltimore Washington Intl. Thurgood Marshall to Newark Liberty Intl. Airport, returning Sat, Dec 6, priced at $189 found 9 hours ago

Fri, Aug 22 - Sun, Aug 24

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$191 Roundtrip, found 1 day ago

$191

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $191 found 1 day ago

Thu, Dec 4 - Sun, Dec 7

BWI

Baltimore Washington Intl. Thurgood Marshall

EWR

Newark Liberty Intl. Airport

$193 Roundtrip, found 9 hours ago

$193

Roundtrip

found 9 hours ago

Select Spirit Airlines flight, departing Thu, Dec 4 from Baltimore Washington Intl. Thurgood Marshall to Newark Liberty Intl. Airport, returning Sun, Dec 7, priced at $193 found 9 hours ago

Fri, Aug 15 - Sat, Aug 16

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$197 Roundtrip, found 3 days ago

$197

Roundtrip

found 3 days ago

Select United flight, departing Fri, Aug 15 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sat, Aug 16, priced at $197 found 3 days ago

Fri, Aug 22 - Sun, Aug 24

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$198 Roundtrip, found 1 day ago

$198

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $198 found 1 day ago

Fri, Aug 15 - Sat, Aug 16

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$207 Roundtrip, found 3 days ago

$207

Roundtrip

found 3 days ago

Select United flight, departing Fri, Aug 15 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sat, Aug 16, priced at $207 found 3 days ago

Fri, Aug 22 - Sun, Aug 24

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$213 Roundtrip, found 1 day ago

$213

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $213 found 1 day ago

Fri, Aug 22 - Sun, Aug 24

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$216 Roundtrip, found 1 day ago

$216

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $216 found 1 day ago

Fri, Aug 15 - Sat, Aug 16

IAD

Washington Dulles Intl.

EWR

Newark Liberty Intl. Airport

$217 Roundtrip, found 3 days ago

$217

Roundtrip

found 3 days ago

Select United flight, departing Fri, Aug 15 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Sat, Aug 16, priced at $217 found 3 days ago

Fri, Aug 15 - Sat, Aug 16

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$219 Roundtrip, found 3 days ago

$219

Roundtrip

found 3 days ago

Select United flight, departing Fri, Aug 15 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sat, Aug 16, priced at $219 found 3 days ago

Fri, Aug 22 - Sun, Aug 24

DCA

Ronald Reagan Washington National

EWR

Newark Liberty Intl. Airport

$222 Roundtrip, found 1 day ago

$222

Roundtrip

found 1 day ago

Select United flight, departing Fri, Aug 22 from Ronald Reagan Washington National to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $222 found 1 day ago

Thu, Oct 23 - Thu, Oct 30

BWI

Baltimore Washington Intl. Thurgood Marshall

EWR

Newark Liberty Intl. Airport

$485 Roundtrip, found 2 days ago

$485

Roundtrip

found 2 days ago

Select American Airlines flight, departing Thu, Oct 23 from Baltimore Washington Intl. Thurgood Marshall to Newark Liberty Intl. Airport, returning Thu, Oct 30, priced at $485 found 2 days ago