Flights from Portland to London

Cheapest flights from Portland

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.

Sun, Sep 21 - Tue, Sep 23

PWM

Portland Intl. Jetport

LHR

Heathrow

$651 Roundtrip, found 2 days ago

$651

Roundtrip

found 2 days ago

Select Delta flight, departing Sun, Sep 21 from Portland Intl. Jetport to Heathrow, returning Tue, Sep 23, priced at $651 found 2 days ago

Tue, Sep 23 - Sun, Sep 28

PWM

Portland Intl. Jetport

LHR

Heathrow

$661 Roundtrip, found 2 days ago

$661

Roundtrip

found 2 days ago

Select JetBlue Airways flight, departing Tue, Sep 23 from Portland Intl. Jetport to Heathrow, returning Sun, Sep 28, priced at $661 found 2 days ago

Wed, Sep 17 - Tue, Sep 23

PWM

Portland Intl. Jetport

LHR

Heathrow

$681 Roundtrip, found 2 days ago

$681

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Sep 17 from Portland Intl. Jetport to Heathrow, returning Tue, Sep 23, priced at $681 found 2 days ago

Mon, Sep 22 - Sun, Sep 28

PWM

Portland Intl. Jetport

LHR

Heathrow

$695 Roundtrip, found 2 days ago

$695

Roundtrip

found 2 days ago

Select JetBlue Airways flight, departing Mon, Sep 22 from Portland Intl. Jetport to Heathrow, returning Sun, Sep 28, priced at $695 found 2 days ago

Fri, Sep 19 - Tue, Sep 23

PWM

Portland Intl. Jetport

LHR

Heathrow

$701 Roundtrip, found 2 days ago

$701

Roundtrip

found 2 days ago

Select Delta flight, departing Fri, Sep 19 from Portland Intl. Jetport to Heathrow, returning Tue, Sep 23, priced at $701 found 2 days ago

Fri, Sep 19 - Sun, Sep 28

PWM

Portland Intl. Jetport

LHR

Heathrow

$720 Roundtrip, found 2 days ago

$720

Roundtrip

found 2 days ago

Select JetBlue Airways flight, departing Fri, Sep 19 from Portland Intl. Jetport to Heathrow, returning Sun, Sep 28, priced at $720 found 2 days ago

Wed, Sep 17 - Sat, Sep 27

PWM

Portland Intl. Jetport

LHR

Heathrow

$731 Roundtrip, found 2 days ago

$731

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Sep 17 from Portland Intl. Jetport to Heathrow, returning Sat, Sep 27, priced at $731 found 2 days ago

Thu, Sep 18 - Tue, Sep 23

PWM

Portland Intl. Jetport

LHR

Heathrow

$731 Roundtrip, found 2 days ago

$731

Roundtrip

found 2 days ago

Select Delta flight, departing Thu, Sep 18 from Portland Intl. Jetport to Heathrow, returning Tue, Sep 23, priced at $731 found 2 days ago

Fri, Sep 19 - Sat, Sep 27

PWM

Portland Intl. Jetport

LHR

Heathrow

$751 Roundtrip, found 2 days ago

$751

Roundtrip

found 2 days ago

Select Delta flight, departing Fri, Sep 19 from Portland Intl. Jetport to Heathrow, returning Sat, Sep 27, priced at $751 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$775 Roundtrip, found 2 days ago

$775

Roundtrip

found 2 days ago

Select Delta flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $775 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$780 Roundtrip, found 2 days ago

$780

Roundtrip

found 2 days ago

Select JetBlue Airways flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $780 found 2 days ago

Thu, Sep 18 - Sat, Sep 27

PWM

Portland Intl. Jetport

LHR

Heathrow

$782 Roundtrip, found 2 days ago

$782

Roundtrip

found 2 days ago

Select KLM flight, departing Thu, Sep 18 from Portland Intl. Jetport to Heathrow, returning Sat, Sep 27, priced at $782 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$785 Roundtrip, found 2 days ago

$785

Roundtrip

found 2 days ago

Select JetBlue Airways flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $785 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$789 Roundtrip, found 2 days ago

$789

Roundtrip

found 2 days ago

Select United flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $789 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$797 Roundtrip, found 2 days ago

$797

Roundtrip

found 2 days ago

Select Delta flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $797 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$800 Roundtrip, found 2 days ago

$800

Roundtrip

found 2 days ago

Select United flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $800 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$803 Roundtrip, found 2 days ago

$803

Roundtrip

found 2 days ago

Select Delta flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $803 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$823 Roundtrip, found 2 days ago

$823

Roundtrip

found 2 days ago

Select Delta flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $823 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$1,700 Roundtrip, found 2 days ago

$1,700

Roundtrip

found 2 days ago

Select American Airlines flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $1,700 found 2 days ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

LHR

Heathrow

$2,309 Roundtrip, found 2 days ago

$2,309

Roundtrip

found 2 days ago

Select Austrian Airlines flight, departing Sat, Sep 20 from Portland Intl. Jetport to Heathrow, returning Fri, Sep 26, priced at $2,309 found 2 days ago