£192 Find Cheap Flights from Portland to the United Kingdom – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to the United Kingdom departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Portland to the United Kingdom

Cheapest return prices found by our users on KAYAK in the last 72 hours
London
Londondirect£659
Manchester
Manchester2 stops£561
Edinburgh
Edinburgh3 stops£591
Belfast
Belfast1 stop£687
Bristol
Bristol1 stop£817
Aberdeen
Aberdeen1 stop£676
Leeds
Leeds1 stop£734
London
Londondirect£659
Manchester
Manchester2 stops£561
Edinburgh
Edinburgh3 stops£591
Belfast
Belfast1 stop£687
Bristol
Bristol1 stop£817
Aberdeen
Aberdeen1 stop£676
Leeds
Leeds1 stop£734

Book Cheap Portland to the United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portland to the United Kingdom that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Portland to the United Kingdom

Wed, 11 Nov - Mon, 16 Nov
British Airways Logo
17:45 - 14:15
PDX
-
GLA
12h 30m
1 stop
British Airways Logo
06:35 - 15:50
GLA
-
PDX
17h 15m
1 stop
£310British Airways
Wed, 14 Oct - Wed, 28 Oct
Multiple Airlines Logo
15:30 - 21:55
PDX
-
MAN
22h 25m
2 stops
Multiple Airlines Logo
06:00 - 18:00
MAN
-
PDX
19h 00m
2 stops
£561Multiple Airlines
Mon, 21 Sep - Tue, 6 Oct
Icelandair Logo
15:30 - 13:25
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£573Icelandair
Mon, 18 Jan - Sun, 28 Feb
Icelandair Logo
14:45 - 10:45
PDX
-
MAN
12h 00m
1 stop
Icelandair Logo
11:55 - 17:00
MAN
-
PDX
13h 05m
1 stop
£573Icelandair
Mon, 21 Sep - Tue, 6 Oct
Icelandair Logo
15:30 - 13:25
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£577Icelandair
Tue, 10 Nov - Mon, 16 Nov
Icelandair Logo
14:45 - 09:55
PDX
-
GLA
11h 10m
1 stop
Icelandair Logo
11:55 - 17:00
GLA
-
PDX
13h 05m
1 stop
£581Icelandair
Thu, 12 Nov - Sun, 15 Nov
Icelandair Logo
14:45 - 09:55
PDX
-
GLA
11h 10m
1 stop
Icelandair Logo
11:55 - 17:00
GLA
-
PDX
13h 05m
1 stop
£581Icelandair
Tue, 10 Nov - Sun, 15 Nov
Icelandair Logo
14:45 - 09:55
PDX
-
GLA
11h 10m
1 stop
Icelandair Logo
11:55 - 17:00
GLA
-
PDX
13h 05m
1 stop
£581Icelandair
Thu, 12 Nov - Mon, 16 Nov
Icelandair Logo
14:45 - 09:55
PDX
-
GLA
11h 10m
1 stop
Icelandair Logo
11:55 - 17:00
GLA
-
PDX
13h 05m
1 stop
£581Icelandair
Wed, 4 Nov - Wed, 11 Nov
British Airways Logo
17:45 - 11:20
PDX
-
LHR
9h 35mdirect
British Airways Logo
13:35 - 15:50
LHR
-
PDX
10h 15mdirect
£661British Airways
Booking Insights

KAYAK's insights & trends for Portland to the United Kingdom flights

Get data-powered insights and trends into flights from Portland to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Portland to the United Kingdom flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United Kingdom from Portland found in the last 5 days was to London, at £786 return. The most popular route is from Portland (PDX) to London Heathrow Airport (LHR), and the cheapest return airline ticket found on this route in the last 5 days was £786.

What is the cheapest time of day to fly to the United Kingdom?

The average price for all round-trip flights from Portland to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United Kingdom is generally in the evening, when retur flights cost £534 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally at night, which is peak travel time and where the average cost of a ticket is £812.

Can I save money by flying with a stopover from Portland to the United Kingdom?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £815 on average.

What is the cheapest month to fly from Portland to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to the United Kingdom is January, when tickets cost £536 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of return tickets is £929 and £890 respectively.

What’s the cheapest day of the week to fly from Portland to United Kingdom?

The average price of all round-trip flights from Portland to the United Kingdom clicked on KAYAK for each day over the last 12 months.

When flying from Portland to United Kingdom, you should consider leaving on a Sunday and avoid Wednesdays if you are looking for the best rates. For your return to Portland, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

How far in advance should I book a flight from Portland to the United Kingdom?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Portland to the United Kingdom, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know - Cheap tickets from Portland to the United Kingdom

Low season

January

Cheapest flight

£192
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Portland to London Luton Airport

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Portland to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to the United Kingdom is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Portland to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to the United Kingdom?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Portland to the United Kingdom

 
Need help choosing which airline to fly with from Portland to the United Kingdom? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
IcelandairOverall score based on 716 reviews
6.9Comfort
6.1Food
8.0Crew
7.2Boarding
6.9Entertainment
Airline reviews

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

2.0 MediocreAnonymous, Jul 2026
RDU - KEF
Read more Icelandair reviews

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Damage May baggage and I report the airport agant and they see it

Crew was very friendly. Need lay flat beds! More snacks

Good. Rxception is the Entertainment - movies and TV shows all out of date…

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Good crew and boarding process. Horrible food and one of the most uncomfortable aircraft seats I have ever sat in. The cabin temperature was warm which made it hard for my family to sleep.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

Flight delayed and we were forced to check our carryon bags which was huge inconvenience.

First leg delay, rescheduled second leg without our approval, cancelled rescheduled second leg, rescheduled cancelled leg to three days later...

We were seated in the rear of the plane. Buses arrived to take us to the terminal but there weren’t enough so we waited an hour to leave the plane.

Every flight was late in arrival, last was late in departure and late in arrival, then lost our luggage!

They canceled the flight and would not rebook us within several days

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

Everything you need to know for your flight from Portland to the United Kingdom

Information on your arrival and departure airports