$316 Find Cheap Flights from Portland to the United Kingdom

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 5/15. 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 round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$523
Edinburgh
Edinburgh2 stops$630
Manchester
Manchester2 stops$596
London
London1 stop$523
Edinburgh
Edinburgh2 stops$630
Manchester
Manchester2 stops$596

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 round-trip 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 round-trip flight deals from Portland to the United Kingdom

ن, يناير 19 - خ, يناير 29
Multiple Airlines Logo
9:47 am - 10:00 amPWM-LGW
19h 13m1 stop
Multiple Airlines Logo
2:00 pm - 9:07 amLGW-PWM
24h 07m1 stop
$523Multiple Airlines
Find Deal
ن, يناير 19 - خ, يناير 29
Multiple Airlines Logo
9:47 am - 10:00 amPWM-LGW
19h 13m1 stop
Multiple Airlines Logo
2:00 pm - 4:26 pmLGW-PWM
31h 26m2 stops
$544Multiple Airlines
Find Deal
ج, يناير 23 - خ, يناير 29
Multiple Airlines Logo
11:29 am - 10:05 amPWM-LGW
41h 36m2 stops
Multiple Airlines Logo
2:00 pm - 9:07 amLGW-PWM
24h 07m1 stop
$567Multiple Airlines
Find Deal
خ, يناير 15 - خ, يناير 22
KLM Logo
2:35 pm - 10:10 amPWM-MAN
14h 35m2 stops
KLM Logo
1:30 pm - 10:27 pmMAN-PWM
13h 57m1 stop
$596KLM
Find Deal
ر, يناير 7 - ث, يناير 13
Delta Logo
2:35 pm - 6:55 amPWM-LHR
11h 20m1 stop
Delta Logo
8:55 am - 12:26 amLHR-PWM
20h 31m2 stops
$598Delta
Find Deal
خ, يناير 22 - ث, يناير 27
Scandinavian Airlines Logo
2:35 pm - 9:40 pmPWM-LHR
26h 05m2 stops
Scandinavian Airlines Logo
6:40 am - 12:20 amLHR-PWM
22h 40m2 stops
$599Scandinavian Airlines
Find Deal
ر, يناير 21 - ن, يناير 26
Delta Logo
12:20 pm - 8:45 amPWM-LHR
15h 25m1 stop
Delta Logo
11:45 am - 12:20 amLHR-PWM
17h 35m2 stops
$602Delta
Find Deal
خ, يناير 22 - ث, يناير 27
Scandinavian Airlines Logo
6:16 am - 9:20 amPWM-LHR
22h 04m3 stops
Scandinavian Airlines Logo
6:40 am - 12:20 amLHR-PWM
22h 40m2 stops
$604Scandinavian Airlines
Find Deal
ج, فبراير 6 - ث, فبراير 10
United Airlines Logo
3:12 pm - 7:55 amPWM-EDI
11h 43m1 stop
United Airlines Logo
9:25 am - 6:52 pmEDI-PWM
14h 27m2 stops
$717United Airlines
Find Deal
ج, مايو 1 - ج, مايو 8
United Airlines Logo
6:00 am - 7:20 amPWM-EDI
20h 20m2 stops
United Airlines Logo
11:30 am - 9:27 pmEDI-PWM
14h 57m1 stop
$740United Airlines
Find Deal
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 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 October, when tickets cost $619 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,242 and $1,188 respectively.

Good to know

Low seasonNovember
Cheapest flight$316
Best time to beat the crowds with an average 19% drop in price.
Flight from Portland to London

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 travelers 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 round-trip 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.

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

    The cheapest time of day to fly to the United Kingdom is generally in the afternoon, when round-trip flights cost $827 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. The most expensive time of day to fly to the United Kingdom is generally in the evening, which is peak travel time and where the average cost of a ticket is $869.

Reviews of the top 3 airlines serving 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.
7.9
DeltaOverall score based on 8013 reviews
7.9Comfort
8.1Boarding
7.9Entertainment
8.5Crew
7.3Food
Airline reviews

Good seats in Main cabin, excellent service and excellent landing

10.0 ExcellentAnonymous, Dec 2025SEA - MSP
Read more Delta reviews

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Great. Seamless. Check in agent at kiosk international was amazing and extremely helpful.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight and crew were great. United didn't inform crew of immigration process which was disappointing!

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

There was a fowl odour coming from the lavatory the entire flight

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

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

Information on your arrival and departure airports