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 1 day ago

$569

Roundtrip

found 1 day 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 1 day ago

Mon, Nov 3 - Sun, Nov 9

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$594 Roundtrip, found 1 day ago

$594

Roundtrip

found 1 day 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 1 day ago

Sun, Sep 7 - Fri, Oct 17

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$609 Roundtrip, found 1 day ago

$609

Roundtrip

found 1 day 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 1 day ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$624 Roundtrip, found 1 day ago

$624

Roundtrip

found 1 day 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 1 day ago

Mon, Nov 3 - Sat, Nov 8

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$627 Roundtrip, found 1 day ago

$627

Roundtrip

found 1 day 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 1 day ago

Tue, Sep 9 - Sat, Oct 18

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$631 Roundtrip, found 1 day ago

$631

Roundtrip

found 1 day ago

Select TAP Portugal flight, departing Tue, Sep 9 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Sat, Oct 18, priced at $631 found 1 day ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$657 Roundtrip, found 1 day ago

$657

Roundtrip

found 1 day 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 $657 found 1 day ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$661 Roundtrip, found 1 day ago

$661

Roundtrip

found 1 day 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 $661 found 1 day ago

Sun, Jul 20 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$748 Roundtrip, found 11 hours ago

$748

Roundtrip

found 11 hours ago

Select United flight, departing Sun, Jul 20 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Thu, Aug 7, priced at $748 found 11 hours ago

Sat, Jun 7 - Tue, Jul 1

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$751 Roundtrip, found 1 day ago

$751

Roundtrip

found 1 day ago

Select Air Transat flight, departing Sat, Jun 7 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Tue, Jul 1, priced at $751 found 1 day ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$762 Roundtrip, found 1 day ago

$762

Roundtrip

found 1 day 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 1 day ago

Tue, Jun 3 - Wed, Jul 2

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$803 Roundtrip, found 1 day ago

$803

Roundtrip

found 1 day 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 1 day ago

Fri, Jul 25 - Tue, Aug 5

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$851 Roundtrip, found 11 hours ago

$851

Roundtrip

found 11 hours 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 11 hours ago

Thu, Jul 24 - Fri, Aug 8

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$924 Roundtrip, found 11 hours ago

$924

Roundtrip

found 11 hours 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 11 hours ago

Wed, Jul 23 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$997 Roundtrip, found 11 hours ago

$997

Roundtrip

found 11 hours ago

Select Lufthansa flight, departing Wed, Jul 23 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Thu, Aug 7, priced at $997 found 11 hours ago

Wed, Jul 23 - Thu, Aug 7

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,048 Roundtrip, found 11 hours ago

$1,048

Roundtrip

found 11 hours 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 11 hours ago

Wed, Jun 4 - Wed, Jul 2

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,177 Roundtrip, found 1 day ago

$1,177

Roundtrip

found 1 day ago

Select KLM flight, departing Wed, Jun 4 from Newark Liberty Intl. Airport to Dr. Francisco de Sa Carneiro, returning Wed, Jul 2, priced at $1,177 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 11 hours ago

$1,455

Roundtrip

found 11 hours 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 11 hours ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,725 Roundtrip, found 1 day ago

$1,725

Roundtrip

found 1 day 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 1 day ago

Wed, Sep 10 - Wed, Oct 15

EWR

Newark Liberty Intl. Airport

OPO

Dr. Francisco de Sa Carneiro

$1,869 Roundtrip, found 1 day ago

$1,869

Roundtrip

found 1 day 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 1 day ago