Flights from Princeton to London

Cheapest flights from Princeton

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.

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$505 Roundtrip, found 2 days ago

$505

Roundtrip

found 2 days ago

Select United flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $505 found 2 days ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$509 Roundtrip, found 2 days ago

$509

Roundtrip

found 2 days ago

Select United flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $509 found 2 days ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$511 Roundtrip, found 2 days ago

$511

Roundtrip

found 2 days ago

Select United flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $511 found 2 days ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$521 Roundtrip, found 2 days ago

$521

Roundtrip

found 2 days ago

Select United flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $521 found 2 days ago

Thu, Aug 14 - Thu, Aug 21

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$534 Roundtrip, found 5 days ago

$534

Roundtrip

found 5 days ago

Select Icelandair flight, departing Thu, Aug 14 from Newark Liberty Intl. Airport to Heathrow, returning Thu, Aug 21, priced at $534 found 5 days ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$565 Roundtrip, found 2 days ago

$565

Roundtrip

found 2 days ago

Select American Airlines flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $565 found 2 days ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$565 Roundtrip, found 2 days ago

$565

Roundtrip

found 2 days ago

Select British Airways flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $565 found 2 days ago

Mon, Dec 8 - Mon, Dec 15

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$588 Roundtrip, found 1 day ago

$588

Roundtrip

found 1 day ago

Select Austrian Airlines flight, departing Mon, Dec 8 from Newark Liberty Intl. Airport to Heathrow, returning Mon, Dec 15, priced at $588 found 1 day ago

Mon, Dec 8 - Mon, Dec 15

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$593 Roundtrip, found 1 day ago

$593

Roundtrip

found 1 day ago

Select Scandinavian Airlines flight, departing Mon, Dec 8 from Newark Liberty Intl. Airport to Heathrow, returning Mon, Dec 15, priced at $593 found 1 day ago

Mon, Sep 8 - Sat, Sep 13

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$612 Roundtrip, found 17 hours ago

$612

Roundtrip

found 17 hours ago

Select Virgin Atlantic flight, departing Mon, Sep 8 from Newark Liberty Intl. Airport to Heathrow, returning Sat, Sep 13, priced at $612 found 17 hours ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$633 Roundtrip, found 2 days ago

$633

Roundtrip

found 2 days ago

Select TAP Portugal flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $633 found 2 days ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$640 Roundtrip, found 2 days ago

$640

Roundtrip

found 2 days ago

Select Air Canada flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $640 found 2 days ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$716 Roundtrip, found 2 days ago

$716

Roundtrip

found 2 days ago

Select Brussels Airlines flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $716 found 2 days ago

Tue, Aug 12 - Tue, Aug 19

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$716 Roundtrip, found 2 days ago

$716

Roundtrip

found 2 days ago

Select Lufthansa flight, departing Tue, Aug 12 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 19, priced at $716 found 2 days ago

Mon, Dec 8 - Mon, Dec 15

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$754 Roundtrip, found 1 day ago

$754

Roundtrip

found 1 day ago

Select Aer Lingus flight, departing Mon, Dec 8 from Newark Liberty Intl. Airport to Heathrow, returning Mon, Dec 15, priced at $754 found 1 day ago

Mon, Aug 4 - Tue, Aug 12

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$796 Roundtrip, found 6 days ago

$796

Roundtrip

found 6 days ago

Select Finnair flight, departing Mon, Aug 4 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 12, priced at $796 found 6 days ago

Mon, Aug 4 - Tue, Aug 12

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$894 Roundtrip, found 6 days ago

$894

Roundtrip

found 6 days ago

Select Iberia flight, departing Mon, Aug 4 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Aug 12, priced at $894 found 6 days ago

Thu, Dec 25 - Tue, Dec 30

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$1,142 Roundtrip, found 1 day ago

$1,142

Roundtrip

found 1 day ago

Select LOT-Polish Airlines flight, departing Thu, Dec 25 from Newark Liberty Intl. Airport to Heathrow, returning Tue, Dec 30, priced at $1,142 found 1 day ago

Sat, Dec 20 - Fri, Jan 2

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$1,150 Roundtrip, found 3 days ago

$1,150

Roundtrip

found 3 days ago

Select Delta flight, departing Sat, Dec 20 from Newark Liberty Intl. Airport to Heathrow, returning Fri, Jan 2, priced at $1,150 found 3 days ago

Sat, Dec 20 - Fri, Jan 2

EWR

Newark Liberty Intl. Airport

LHR

Heathrow

$1,202 Roundtrip, found 3 days ago

$1,202

Roundtrip

found 3 days ago

Select KLM flight, departing Sat, Dec 20 from Newark Liberty Intl. Airport to Heathrow, returning Fri, Jan 2, priced at $1,202 found 3 days ago