$324 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 8/25. 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$759
Edinburgh
Edinburgh1 stop$805
Manchester
Manchester2 stops$955
London
London1 stop$759
Edinburgh
Edinburgh1 stop$805
Manchester
Manchester2 stops$955

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

Wed, Nov 11 - Fri, Nov 13
United Airlines Logo
3:15 pm - 10:25 am
PWM
-
LHR
14h 10m
1 stop
United Airlines Logo
6:50 am - 6:13 pm
LHR
-
PWM
16h 23m
2 stops
$759United Airlines
Wed, Nov 11 - Fri, Nov 13
Air Canada Logo
11:17 am - 11:20 am
PWM
-
LHR
19h 03m
3 stops
Air Canada Logo
9:00 am - 10:57 pm
LHR
-
PWM
18h 57m
3 stops
$785Air Canada
Fri, Sep 11 - Thu, Sep 17
Scandinavian Airlines Logo
6:30 am - 9:35 am
PWM
-
LHR
22h 05m
2 stops
Scandinavian Airlines Logo
7:50 pm - 11:59 pm
LHR
-
PWM
33h 09m
2 stops
$803Scandinavian Airlines
Thu, Oct 1 - Thu, Oct 8
Scandinavian Airlines Logo
2:35 pm - 6:30 pm
PWM
-
LHR
22h 55m
2 stops
Scandinavian Airlines Logo
7:05 am - 11:49 pm
LHR
-
PWM
21h 44m
2 stops
$864Scandinavian Airlines
Mon, Sep 14 - Tue, Sep 22
KLM Logo
2:35 pm - 9:20 am
PWM
-
EDI
13h 45m
1 stop
KLM Logo
2:05 pm - 11:59 pm
EDI
-
PWM
14h 54m
1 stop
$867KLM
Tue, Nov 10 - Tue, Nov 17
Delta Logo
1:35 pm - 11:40 am
PWM
-
LHR
17h 05m
1 stop
Delta Logo
10:00 am - 11:49 pm
LHR
-
PWM
18h 49m
2 stops
$868Delta
Tue, Nov 10 - Tue, Nov 17
Delta Logo
12:50 pm - 9:35 am
PWM
-
LHR
15h 45m
2 stops
Delta Logo
6:30 am - 11:49 pm
LHR
-
PWM
22h 19m
2 stops
$872Delta
Mon, Sep 14 - Tue, Sep 22
KLM Logo
6:02 am - 9:20 am
PWM
-
EDI
22h 18m
1 stop
KLM Logo
2:05 pm - 11:59 pm
EDI
-
PWM
14h 54m
1 stop
$872KLM
Mon, Oct 12 - Mon, Oct 19
American Airlines Logo
3:03 pm - 1:10 pm
PWM
-
MAN
17h 07m
2 stops
American Airlines Logo
8:50 am - 11:24 pm
MAN
-
PWM
19h 34m
2 stops
$955American Airlines
Sat, Sep 5 - Sat, Sep 12
American Airlines Logo
4:07 pm - 2:50 pm
PWM
-
GLA
17h 43m
2 stops
American Airlines Logo
6:35 am - 7:38 pm
GLA
-
PWM
18h 03m
2 stops
$970American Airlines
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 January, when tickets cost $0 (return) on average. On the other hand, the most expensive months are June and November, when the average cost of round-trip tickets is $986 and $850 respectively.

Good to know

Cheapest flight$324
Flight from Portland to Edinburgh

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.

Reviews of the top 4 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 8425 reviews
7.8Entertainment
8.1Boarding
7.2Food
8.5Crew
7.8Comfort
Airline reviews

Planes were clean, no water or snacks on either flight.

6.0 GoodAnonymous, May 2026
ECP - ATL
Read more Delta reviews

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

As always, it’s a pleasure to travel with KLM. It is one of my favorite airlines.

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

The flight was delayed. The aircraft was unclean. Promised seat was not given due to change in Aircraft. Not one crew on ground was in a position to give any response. Amsterdam Airport is AVIODABLE Over crowded. Over Expensive. Poor Services.

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Empty seats next to me - wish it had been for a longer flight!!

Terrible last row seats many seats available but no offer to move to better seat

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Check in was chaotic with only one counter for business class and first class. The luggage conveyor belt at JFK airport was broken so the flight departure was delayed which made the flight stressful as I had a tight connection. Although the captain said they could make up the delay, they didn’t do so.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Lost of requested seat assignments. Lost my husband's meal choice

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

We had a delay, but thankfully I made it to my connection. Overall it went smooth

The flight had a delay but I made it to my connection. Flight was smooth overall

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

It's a long flight and that is always difficult. I was comfortable and well. The movies available were great and the crew was good.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

Flight was delayed an no one cares, or try to help passengers to get the conexión.

Our flight was cancelled while we are on our way to the airport. So, no notice. We were rescheduled to another airline with a 2 hour later takeoff and so arrived at our destination on time. We pre-paid American Airlines $190 to upgrade our seats. No refund. So no use for AA or Kayak.

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

The business class layout of chairs was weired. You are sitting directly across stranger.,

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

Tv screens and movie selection v good. Friendly staff. They were really worried about max capacity and room for carryons. That is never fun but i had no problem finding space when I boarded.

My flight to London from Philadelphia was cancelled due to weather.

Disliked having to wait a little longer to disembark from the plan when we landed in London

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

Information on your arrival and departure airports