Portland (PDX) to London Heathrow (LHR) cheap flight deal from $514 USD in economy class

FIIcelandair

Round Trip•Economy

PDX

Portland International Airport

Portland, United States

LHR

London Heathrow Airport

London Heathrow, United Kingdom

$947 USD

-46%$514 USD

Verified Sep 19, 2025 at 3:48 PM

September 2025

Today

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19$1,198 20$1,198 21$1,061 22$748 23 24$710 25$1,052 26$727 27$997 28$627 29$531 30$1,048 1$620 2$670 3$1,257 4$524 5$1,221

Fair Availability

22% of dates checked are available within 10% of the lowest price

Friday, September 26th, 2025

10 round-trip options

Returning

Wed, Oct 1, 2025•5 Day Trip

$2,396 USD

Google Flights

Returning

Thu, Oct 2, 2025•6 Day Trip

$1,618 USD

Google Flights

Returning

Fri, Oct 3, 2025•7 Day Trip

$2,396 USD

Google Flights

Returning

Sat, Oct 4, 2025•8 Day Trip

$1,445 USD

Google Flights

Returning

Sun, Oct 5, 2025•9 Day Trip

$2,032 USD

Google Flights

Returning

Mon, Oct 6, 2025•10 Day Trip

$825 USD

Google Flights

Returning

Tue, Oct 7, 2025•11 Day Trip

$727 USD

Google Flights

Returning

Wed, Oct 8, 2025•12 Day Trip

$873 USD

Google Flights

Returning

Thu, Oct 9, 2025•13 Day Trip

$1,142 USD

Google Flights

Returning

Fri, Oct 10, 2025•14 Day Trip

$1,724 USD

Google Flights