Find Cheap Flights from London to Portland (LON - PDX)

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Sat 12/9
Sat 12/16
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Good to Know

Low Season:
March
Best time to beat the crowds
2%
expected price decrease
High Season:
July
Most popular time to fly
11%
expected price increase
Average Price:
$1238
(avg. price over the last 2 weeks)
Good Deal:
$939
or less (round trip)

When to Book Flights from London to Portland

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $939 or less.
The cheapest flight from London to Portland was found 70 days before departure, on average.
Book at least 6 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is March.
Morning departure is around 19% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking London to Portland Flights

How long does a flight from London to Portland take?
An average nonstop flight takes 10h 52m, covering a distance of 4907 miles.
Which airlines provide the cheapest flights from London to Portland?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($568), KLM ($607) and Virgin Atlantic ($676).
Do I need a passport to fly between London and Portland?
Yes.
What’s the cheapest day of the week to fly London to Portland?
For London to Portland, Tuesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Portland back to London, the best deals are generally found on Saturday, with Wednesday being the most expensive.

Book cheap flights from London to Portland (round-trip)

Airports
Origin
London
$607
only
$607
$732
only
$732
$568
only
$568
Destination
Portland
$568
only
$568
Tue, Jan 16
LGW
PDX
35h 30m
Sun, Jan 28
PDX
LGW
35h 11m
Trip: 13 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Feb 9
LHR
PDX
31h 23m
Sun, Feb 11
PDX
LHR
17h 55m
Trip: 3 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1527 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.5
Entertainment
7.2
Food
7.5
FCO
AMS
Excellent 10.0

Flight crew was pleasant and attentive. Seats were comfortable for economy as well. We were allowed to check in extra baggage for free at check in which really helped since we would be catching a connecting flight in Amsterdam

AMS
ATL
Good 7.0

newer plane, good staff

need better and more food options, more often

JNB
AMS
Excellent 9.6

Comfort economy well worth the extra.

LHR
AMS
Good 7.6

I was pleasantly surprised they had a snack service on such a short flight. The flight attendants were very friendly

Amsterdam customs is the most disorganized I have ever seen. With the number of tourists entering the country you would think they would have done something about it. There were only 2 customs agents!! One for all passports and 1 for all passports. We were in the customs hall longer than we were in flight!

JNB
AMS
Excellent 8.0

Good multi media access and content

Fri, May 11
LHR
PDX
10h 52m
Fri, May 25
PDX
LHR
15h 45m
Trip: 15 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 958 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
BWI
DTW
Mediocre 3.3

The crew was rude.

CHC
BNE
Excellent 9.6

The crew were very friendly and attentive through out flight.

LHR
MIA
Excellent 8.6

Service

The seats are a bit uncomfortable for such long flights. Crue was excellent

MEL
LAX
Good 7.3

in flight experience is above average

The computer system really needs a lot of improvement. We were checking in with our infant daughter and it took 50 minutes to check in with a senior person helping the check in person and phone calls to their technical assistance. We were told an infant is difficult in their system, and our dual national daughter was another layer of complication.

LAX
MEL
Excellent 10.0

Crew was very nice helpful and attentionate Entertainment had plenty of variety maybe not so many new movies but enough to find one you have not seen or classic you could watch again Food was good

We weighted our hand luggage at the counter and then they ask again during boarding little confusing

Thu, May 24
LGW
PDX
13h 05m
Sun, May 27
PDX
LGW
12h 20m
Trip: 4 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6357 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
KEF
ZRH
Mediocre 2.0

Everything

CPH
KEF
Excellent 10.0

Very accommodating to me when I was flying solo with my 15 mo. old.

KEF
DEN
Excellent 10.0

Such friendly staff and great in flight entertainment

BOS
KEF
Okay 4.0

Seats are uncomfortable, very uncomfortable compared to other airlines.

KEF
ORD
Okay 5.3

The seats are so uncomfortable and small. The arm rest also doesn't go up when there was no one in the middle seat - which would have created more room.

Fri, May 11
LCY
PDX
39h 12m
Fri, May 25
PDX
LCY
41h 46m
Trip: 15 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17207 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.7
FCO
MUC
Excellent 10.0

Everything overall

Slight delay

DEN
MUC
Okay 4.0

I liked that if I asked for something the crew would get to me rapidly. Extra leg room.

Boarding process: just a lot of confusion. Inflight crew service poor: the was no time to have any brain reaction when they would pass by with coffee or anything...and when I asked for coffee the answer for a gentlemen of the crew was: coffee already passed by. Really!!?? Make sure that +$1200 are spent well. Rude or inattentive crew members shouldn’t be on flights that are that long...I had to nsist to have a miserable cup of coffee. Movie selection was poor. USB port didn’t work. Shame on you!

DEN
MUC
Good 7.3

At least Lufthansa has a little bit more leg room.

BRU
MUC
Good 6.3

Courteous and friendly staff - did enjoy my gluten free meal

Economy seats leave no room for relaxed arms - i had mine in front of me for 9 hours as the seat was SO small! As am I!!

MUC
DEN
Okay 4.0

When I missed the flight in Brussels I had no options re: changing my ticket as there was no ticket sales counter at the airport. Had to go to the travel agent and book a flight on another carrier.

Thu, Feb 8
LGW
PDX
19h 22m
Thu, Feb 22
PDX
LGW
21h 04m
Trip: 15 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 3870 reviews
Overall
7.5
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
DUB
LAX
Poor 0.0

N/A

Didn't take Dublin to LA.

SFO
DUB
Good 7.6

The economy seats are more comfortable than average transatlantic flights on other airlines, albeit far from perfect. The meal was nicer too. The crew both onboard and on land was nice and attentive.

The entertainment system is slow and the selection of films to watch could be better.

BOS
DUB
Good 7.3

Flight crew was great! Food was better than most airlines I’ve flown. Seats were comfortable.

Having to pay for a glass of wine with dinner... every other airline I fly gives free alcoholic beverages

DUB
BOS
Good 7.6

Food provided. Enough overhead bin space for bags. Newish plane. On demand entertainment screen.

Couldn’t change seat at checkin so couldn’t sit next to husband on a separate reservation. Not many new movies.

DUS
DUB
Mediocre 2.0

my ticket being canceled without me knowing

Sat, Jan 20
LGW
PDX
32h 20m
Sun, Jan 28
PDX
LGW
35h 11m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jan 16
LGW
PDX
35h 30m
Wed, Jan 31
PDX
LGW
35h 11m
Trip: 16 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jan 10
LHR
PDX
15h 11m
Tue, Jan 16
PDX
LHR
14h 37m
Trip: 7 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 958 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
LHR
MIA
Excellent 8.6

Service

The seats are a bit uncomfortable for such long flights. Crue was excellent

LAX
MEL
Excellent 10.0

Crew was very nice helpful and attentionate Entertainment had plenty of variety maybe not so many new movies but enough to find one you have not seen or classic you could watch again Food was good

We weighted our hand luggage at the counter and then they ask again during boarding little confusing

LHR
BOS
Excellent 8.0

The crew was excellent. Flight was quite comfortable. Nice attention to service

I would have appreciated another round of hot drinks.

DTW
LHR
Good 7.6

Excellent entertainment options, out stewardess was fantastic.

Cramped seats.

CHC
BNE
Excellent 9.6

The crew were very friendly and attentive through out flight.

Tue, Jan 16
LGW
PDX
35h 30m
Mon, Jan 29
PDX
LGW
57h 01m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Apr 2
LHR
PDX
29h 05m
Wed, Apr 11
PDX
LHR
12h 20m
Trip: 10 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6357 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
KEF
ORD
Okay 5.3

The seats are so uncomfortable and small. The arm rest also doesn't go up when there was no one in the middle seat - which would have created more room.

KEF
SEA
Mediocre 3.6

No free meal or alcohol. Small seats.

SEA
KEF
Excellent 9.6

Free Hot drink, Headrest entertainment

No peanuts...I dont really care

KEF
DEN
Excellent 10.0

Such friendly staff and great in flight entertainment

KEF
MSP
Excellent 10.0

Very accommodating to me when I was flying solo with my 15 mo. old.

Thu, May 17
LCY
PDX
44h 02m
Mon, May 21
PDX
LCY
20h 05m
Trip: 5 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17207 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.7
MUC
EWR
Excellent 9.0

Too close for getting on as 3 passport checks seems redundant. Munich has very little signage to direct anyone. We do not live there so do not know the language.

DEN
MUC
Okay 4.0

I liked that if I asked for something the crew would get to me rapidly. Extra leg room.

Boarding process: just a lot of confusion. Inflight crew service poor: the was no time to have any brain reaction when they would pass by with coffee or anything...and when I asked for coffee the answer for a gentlemen of the crew was: coffee already passed by. Really!!?? Make sure that +$1200 are spent well. Rude or inattentive crew members shouldn’t be on flights that are that long...I had to nsist to have a miserable cup of coffee. Movie selection was poor. USB port didn’t work. Shame on you!

MUC
DEN
Okay 4.0

When I missed the flight in Brussels I had no options re: changing my ticket as there was no ticket sales counter at the airport. Had to go to the travel agent and book a flight on another carrier.

CAI
MUC
Okay 4.4

The business class seats which are a lot more costly than economy seats are no different than economy seats. Same seat and on a 5 hour flight they are awful. The only difference from economy is that the middle seat is left empty....a help toward comfort, but far short especially when the price difference is factored in.

JFK
TXL
Excellent 10.0

Everything was on time, the flight crew was unbelievably friendly, and the flight was empty which made it comfortable and very relaxing!! Highly recommend.

Sun, May 6
LHR
PDX
12h 53m
Sun, May 20
PDX
LHR
17h 36m
Trip: 15 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1527 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.5
Entertainment
7.2
Food
7.5
JNB
AMS
Excellent 8.0

Good multi media access and content

AMS
PRG
Excellent 10.0

Equally friendly crew and experience. It was complimented by the time we got to spend in the fantastic KLM lounge while we waited for the flight.

Nothing!

JFK
AMS
Good 7.6

Two hours delay in the start.

LHR
AMS
Good 7.6

I was pleasantly surprised they had a snack service on such a short flight. The flight attendants were very friendly

Amsterdam customs is the most disorganized I have ever seen. With the number of tourists entering the country you would think they would have done something about it. There were only 2 customs agents!! One for all passports and 1 for all passports. We were in the customs hall longer than we were in flight!

AMS
ATL
Good 7.0

newer plane, good staff

need better and more food options, more often

Tue, Jan 9
LHR
PDX
15h 11m
Tue, Jan 30
PDX
LHR
14h 37m
Trip: 22 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 958 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
LAX
LHR
Good 6.0

good plane and timing

meal was not served according to the request and no sound support from the staff

LAX
MEL
Excellent 8.0

I like flying Virgin whether Australia or Atlantic!

Just a little bit more leg room.

MEL
LAX
Good 7.3

in flight experience is above average

The computer system really needs a lot of improvement. We were checking in with our infant daughter and it took 50 minutes to check in with a senior person helping the check in person and phone calls to their technical assistance. We were told an infant is difficult in their system, and our dual national daughter was another layer of complication.

CHC
BNE
Excellent 9.6

The crew were very friendly and attentive through out flight.

BWI
DTW
Mediocre 3.3

The crew was rude.

Tue, Jan 16
LGW
PDX
35h 30m
Tue, Jan 30
PDX
LGW
37h 35m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Thu, May 24
LHR
PDX
13h 05m
Sun, May 27
PDX
LHR
12h 20m
Trip: 4 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 6357 reviews
Overall
7.6
Boarding
7.3
Comfort
7.5
Crew
8.2
Entertainment
7.8
Food
6.3
KEF
ZRH
Mediocre 2.0

Everything

SEA
KEF
Excellent 9.6

Free Hot drink, Headrest entertainment

No peanuts...I dont really care

KEF
ORD
Okay 5.3

The seats are so uncomfortable and small. The arm rest also doesn't go up when there was no one in the middle seat - which would have created more room.

SEA
KEF
Mediocre 3.0

Have to pay for food. Uncomfortable seats.

KEF
DEN
Excellent 10.0

Such friendly staff and great in flight entertainment

Sun, May 6
LCY
PDX
32h 21m
Sun, May 20
PDX
LCY
20h 05m
Trip: 15 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17207 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.7
MUC
DEN
Okay 4.0

When I missed the flight in Brussels I had no options re: changing my ticket as there was no ticket sales counter at the airport. Had to go to the travel agent and book a flight on another carrier.

MUC
LHR
Good 7.0

Friendly crew

Plane loaded late then waited on the tarmac, arrived an hour later than scheduled time. This has happened to me on every one of the ten Lufthansa flights I have been on. Apparently they don't know what it is to be on-time.

BRU
MUC
Good 6.3

Courteous and friendly staff - did enjoy my gluten free meal

Economy seats leave no room for relaxed arms - i had mine in front of me for 9 hours as the seat was SO small! As am I!!

MUC
EWR
Excellent 9.0

Too close for getting on as 3 passport checks seems redundant. Munich has very little signage to direct anyone. We do not live there so do not know the language.

CAI
MUC
Okay 4.4

The business class seats which are a lot more costly than economy seats are no different than economy seats. Same seat and on a 5 hour flight they are awful. The only difference from economy is that the middle seat is left empty....a help toward comfort, but far short especially when the price difference is factored in.

Tue, Feb 6
LHR
PDX
18h 31m
Tue, Feb 27
PDX
LHR
14h 50m
Trip: 22 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 958 reviews
Overall
8.1
Boarding
8.3
Comfort
7.8
Crew
8.5
Entertainment
8.0
Food
7.8
BWI
DTW
Mediocre 3.3

The crew was rude.

LHR
BOS
Excellent 8.0

The crew was excellent. Flight was quite comfortable. Nice attention to service

I would have appreciated another round of hot drinks.

LAX
LHR
Excellent 8.3

The crew was the best part of my experience, super nice and accomodating

the wifi had subpar performance

MEL
LAX
Good 7.3

in flight experience is above average

The computer system really needs a lot of improvement. We were checking in with our infant daughter and it took 50 minutes to check in with a senior person helping the check in person and phone calls to their technical assistance. We were told an infant is difficult in their system, and our dual national daughter was another layer of complication.

LAX
BNE
Excellent 10.0

Very polite and helpful staff.

Tue, May 22
LHR
PDX
12h 53m
Thu, Jun 7
PDX
LHR
20h 24m
Trip: 17 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1527 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.5
Entertainment
7.2
Food
7.5
JNB
AMS
Excellent 8.0

Good multi media access and content

ATL
CLE
Okay 4.6

old plane, tight and uncomfortable

LHR
AMS
Good 7.6

I was pleasantly surprised they had a snack service on such a short flight. The flight attendants were very friendly

Amsterdam customs is the most disorganized I have ever seen. With the number of tourists entering the country you would think they would have done something about it. There were only 2 customs agents!! One for all passports and 1 for all passports. We were in the customs hall longer than we were in flight!

DMM
AMS
Okay 4.3

staff was fine

old old plane, very uncomfortable. Tiny bad screen made movies pointless

SVO
AMS
Okay 5.2

KLM can't seem to figure out the order of boarding the plane. Should be business - priority - everyone else. Instead they do priority first, and that's usually two-thirds of the passengers. Also, really tired of the fake business class on these flights...

Thu, Jan 18
LGW
PDX
59h 55m
Tue, Jan 30
PDX
LGW
37h 35m
Trip: 13 days
Overall 0.0 Poor
Based on 0 reviews
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.