£184 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 15/10. 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
London1 stop£690
Manchester
Manchester3 stops£567
Edinburgh
Edinburgh3 stops£613
Belfast
Belfast1 stop£710
Bristol
Bristol2 stops£729
Aberdeen
Aberdeen2 stops£657
Leeds
Leeds1 stop£722
London
London1 stop£690
Manchester
Manchester3 stops£567
Edinburgh
Edinburgh3 stops£613
Belfast
Belfast1 stop£710
Bristol
Bristol2 stops£729
Aberdeen
Aberdeen2 stops£657
Leeds
Leeds1 stop£722

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

Sun, 23 Aug - Mon, 31 Aug
Multiple Airlines Logo
19:05 - 08:55
PDX
-
MAN
29h 50m
3 stops
Multiple Airlines Logo
22:35 - 13:50
MAN
-
PDX
47h 15m
3 stops
£567Multiple Airlines
Sun, 23 Aug - Mon, 31 Aug
Multiple Airlines Logo
19:05 - 08:55
PDX
-
MAN
29h 50m
3 stops
Multiple Airlines Logo
22:35 - 13:50
MAN
-
PDX
47h 15m
3 stops
£575Multiple Airlines
Sat, 12 Sep - Wed, 23 Sep
Icelandair Logo
15:30 - 13:25
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£617Icelandair
Sun, 6 Sep - Sat, 19 Sep
Virgin Atlantic Logo
15:00 - 22:30
PDX
-
INV
23h 30m
2 stops
Virgin Atlantic Logo
06:25 - 11:10
INV
-
PDX
12h 45m
1 stop
£619Virgin Atlantic
Sun, 6 Sep - Sat, 19 Sep
American Airlines Logo
05:18 - 10:15
PDX
-
INV
20h 57m
2 stops
American Airlines Logo
07:20 - 19:36
INV
-
PDX
20h 16m
2 stops
£620American Airlines
Sat, 12 Sep - Fri, 25 Sep
Icelandair Logo
15:30 - 13:25
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£635Icelandair
Sun, 2 Aug - Tue, 18 Aug
Virgin Atlantic Logo
17:50 - 15:35
PDX
-
LHR
13h 45m
1 stop
Virgin Atlantic Logo
20:55 - 11:10
LHR
-
PDX
22h 15m
1 stop
£693Virgin Atlantic
Sat, 12 Sep - Sat, 19 Sep
American Airlines Logo
19:30 - 19:30
PDX
-
ABZ
16h 00m
1 stop
American Airlines Logo
10:20 - 00:07
ABZ
-
PDX
21h 47m
2 stops
£747American Airlines
Sat, 12 Sep - Sat, 19 Sep
British Airways Logo
19:30 - 17:55
PDX
-
ABZ
14h 25m
1 stop
British Airways Logo
10:20 - 23:28
ABZ
-
PDX
21h 08m
2 stops
£749British Airways
Sat, 12 Sep - Sat, 19 Sep
British Airways Logo
11:48 - 15:00
PDX
-
ABZ
19h 12m
2 stops
British Airways Logo
10:20 - 23:28
ABZ
-
PDX
21h 08m
2 stops
£752British 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 72 hours was to London, at £725 return. The most popular route is from Portland (PDX) to London Heathrow Airport (LHR), and the cheapest round-trip airline ticket found on this route in the last 5 days was £725.

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 £532 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 £725.

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.

No, with an average price for the route of £824, prices are generally cheapest when you fly direct.

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 March, when tickets cost £347 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of return tickets is £2,115 and £712 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 Thursdays 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 a flight from Portland to the United Kingdom, you should book around 5 weeks before departure, which saves you about 16% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

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

Low seasonJanuary
Cheapest flight£184
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly and prices are also 8% lower on average.
Flight from Portland to London Stansted 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 3 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.
7.5
Virgin AtlanticOverall score based on 689 reviews
7.5Entertainment
6.9Food
7.3Comfort
7.7Boarding
8.1Crew
Airline reviews

Seating and zone. The minor I went with didn’t even seat close to me

4.0 OkayAnonymous, Mar 2026
BOS - LIS
Read more Virgin Atlantic reviews

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

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.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

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

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

The real reason why the flying experience with Icelandair ---was mediocre was because of not being able to enter DC airspace yesterday evening. This obviously was out of your control and do realize this is a safety issue. I did notice---that everything was being done to get us to Washington Dulles and we did arrive at Dulles SAFELY with just a 4 hour delay. Thank you!

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

Lady next to me was coughing profusely the entire flight, other lady moved seats because of it, 8 hours of that during an overnight flight is a bit much.

The flight was ok. The seats are so small. The free wifi for members was not an option on this flight. The one flight attendant, older woman with straight white/grey hair, was very rude. The gentleman next to me asked about the wifi since he was a member as well. He stated, accurately, that the option to enter the idea number was not available. Her response was, "I don't know what to tell you" and walked away from him. The rest of the staff was wonderful. I asked another flight attendant about the wifi, she said the free wifi was not enabled on that flight (true or not- at least she was friendly). It was also pretty dirty. When I opened the tray table it had mushed crumbs and there was a dirty used pair of ear buds in my seat pocket. Lastly the air vent above my head was working but stuck so I was unable to move it to face me when it got warm. I fly American often but this really was not a great flight.

3.5 hr delay leaving Pittsburgh, notifications for which were incomplete and untimely. Connecting flight was automatically switched to one requiring more than a 30 hour layover! After waiting in a long queue, customer service reduced layover to 11 hours and also set up an earlier standby. The standby had empty seats, but the gate agent couldn't change our tickets! On top of all that my luggage was lost and has yet to even be located, much less returned 5 (FIVE!) days later. Too bad there's no rating below poor.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

The seats are extra cramped if you are taller than 5’8! Spring for the extra legroom seats for sure if you have a long flight!

Very disappointed with British Airways. It has been over 24 hours and I still have not received my checked baggage or any proper update. Customer support has been unresponsive, making the situation even more frustrating. Poor baggage handling and lack of communication seriously impacted my travel experience.

Flight was good but temp in the cabin was cold.

I like American Airlines and their safety record. They provide quality service and a feel safe enough to prefer American Airlines over other carriers even if I have to pay a little more.

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

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

Information on your arrival and departure airports