Flights from Princeton to Porto

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, Sep 9 - Fri, Oct 17

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$569 Roundtrip, found 3 days ago

$569

Roundtrip

found 3 days ago

Select Scandinavian Airlines flight, departing Tue, Sep 9 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Fri, Oct 17, priced at $569 found 3 days ago

Mon, Nov 3 - Sun, Nov 9

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$594 Roundtrip, found 3 days ago

$594

Roundtrip

found 3 days ago

Select TAP Portugal flight, departing Mon, Nov 3 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Sun, Nov 9, priced at $594 found 3 days ago

Sun, Sep 7 - Fri, Oct 17

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$609 Roundtrip, found 3 days ago

$609

Roundtrip

found 3 days ago

Select Scandinavian Airlines flight, departing Sun, Sep 7 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Fri, Oct 17, priced at $609 found 3 days ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$624 Roundtrip, found 3 days ago

$624

Roundtrip

found 3 days ago

Select TAP Portugal flight, departing Wed, Sep 10 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Wed, Oct 15, priced at $624 found 3 days ago

Mon, Nov 3 - Sat, Nov 8

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$627 Roundtrip, found 3 days ago

$627

Roundtrip

found 3 days ago

Select TAP Portugal flight, departing Mon, Nov 3 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Sat, Nov 8, priced at $627 found 3 days ago

Tue, Jun 10 - Fri, Jun 27

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$747 Roundtrip, found 11 hours ago

$747

Roundtrip

found 11 hours ago

Select Air Transat flight, departing Tue, Jun 10 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Fri, Jun 27, priced at $747 found 11 hours ago

Sun, Jun 22 - Tue, Sep 2

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$748 Roundtrip, found 5 hours ago

$748

Roundtrip

found 5 hours ago

Select United flight, departing Sun, Jun 22 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Tue, Sep 2, priced at $748 found 5 hours ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$762 Roundtrip, found 3 days ago

$762

Roundtrip

found 3 days ago

Select Air Canada flight, departing Wed, Sep 10 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Wed, Oct 15, priced at $762 found 3 days ago

Tue, Jun 3 - Wed, Jul 2

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$803 Roundtrip, found 3 days ago

$803

Roundtrip

found 3 days ago

Select British Airways flight, departing Tue, Jun 3 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Wed, Jul 2, priced at $803 found 3 days ago

Fri, Jul 25 - Tue, Aug 5

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$851 Roundtrip, found 2 days ago

$851

Roundtrip

found 2 days ago

Select Swiss International Air Lines flight, departing Fri, Jul 25 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Tue, Aug 5, priced at $851 found 2 days ago

Thu, Jul 24 - Fri, Aug 8

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$924 Roundtrip, found 2 days ago

$924

Roundtrip

found 2 days ago

Select Delta flight, departing Thu, Jul 24 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Fri, Aug 8, priced at $924 found 2 days ago

Tue, Jun 10 - Fri, Jun 27

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$925 Roundtrip, found 11 hours ago

$925

Roundtrip

found 11 hours ago

Select Lufthansa flight, departing Tue, Jun 10 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Fri, Jun 27, priced at $925 found 11 hours ago

Mon, Jun 23 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,021 Roundtrip, found 1 day ago

$1,021

Roundtrip

found 1 day ago

Select KLM flight, departing Mon, Jun 23 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Thu, Aug 7, priced at $1,021 found 1 day ago

Wed, Jul 23 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,048 Roundtrip, found 2 days ago

$1,048

Roundtrip

found 2 days ago

Select Brussels Airlines flight, departing Wed, Jul 23 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Thu, Aug 7, priced at $1,048 found 2 days ago

Mon, Jun 23 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,072 Roundtrip, found 1 day ago

$1,072

Roundtrip

found 1 day ago

Select Austrian Airlines flight, departing Mon, Jun 23 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Thu, Aug 7, priced at $1,072 found 1 day ago

Wed, Jul 23 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,455 Roundtrip, found 2 days ago

$1,455

Roundtrip

found 2 days ago

Select JetBlue Airways flight, departing Wed, Jul 23 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Thu, Aug 7, priced at $1,455 found 2 days ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,725 Roundtrip, found 3 days ago

$1,725

Roundtrip

found 3 days ago

Select Air France flight, departing Wed, Sep 10 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Wed, Oct 15, priced at $1,725 found 3 days ago

Mon, Jun 23 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,846 Roundtrip, found 1 day ago

$1,846

Roundtrip

found 1 day ago

Select Turkish Airlines flight, departing Mon, Jun 23 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Thu, Aug 7, priced at $1,846 found 1 day ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,869 Roundtrip, found 3 days ago

$1,869

Roundtrip

found 3 days ago

Select American Airlines flight, departing Wed, Sep 10 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Wed, Oct 15, priced at $1,869 found 3 days ago

Mon, Jun 23 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$2,141 Roundtrip, found 1 day ago

$2,141

Roundtrip

found 1 day ago

Select Iberia flight, departing Mon, Jun 23 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Thu, Aug 7, priced at $2,141 found 1 day ago