Find Deals on Flights from Portland to London (PWM - LON)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Portland to London

(Round-trip)
Depart: Sun Jul 30 2017 Return: Thu Aug 17 2017 Trip spans 19 days
United
United
PWM
LHR
17h 20m
1 stop
LHR
PWM
19h 37m
2 stops
Depart: Tue Jul 25 2017 Return: Wed Aug 9 2017 Trip spans 16 days
Virgin Atlantic
Virgin Atlantic
PWM
LHR
17h 25m
1 stop
LHR
PWM
17h 27m
1 stop
Depart: Thu Sep 21 2017 Return: Tue Sep 26 2017 Trip spans 6 days
TAP Portugal
TAP Portugal
PWM
LGW
37h 15m
2 stops
LGW
PWM
18h 22m
2 stops
Depart: Sun Jul 23 2017 Return: Tue Aug 8 2017 Trip spans 17 days
KLM
KLM
PWM
LCY
14h 35m
2 stops
LCY
PWM
19h 07m
2 stops
Depart: Thu Jun 8 2017 Return: Sat Jun 17 2017 Trip spans 10 days
$1395
Select
Delta
Delta
PWM
LCY
13h 50m
2 stops
LCY
PWM
18h 34m
2 stops
Depart: Sun Apr 16 2017 Return: Thu Apr 20 2017 Trip spans 5 days
$1401
Select
Major Airline
Major Airline
PWM
LHR
18h 35m
2 stops
LHR
PWM
24h 11m
2 stops
Depart: Tue Aug 1 2017 Return: Thu Aug 17 2017 Trip spans 17 days
United
United
PWM
LHR
20h 00m
1 stop
LHR
PWM
15h 45m
2 stops
Depart: Tue Aug 1 2017 Return: Tue Aug 22 2017 Trip spans 22 days
KLM
KLM
PWM
LCY
15h 50m
2 stops
LCY
PWM
19h 07m
2 stops
Depart: Tue Aug 1 2017 Return: Tue Aug 22 2017 Trip spans 22 days
United
United
PWM
LHR
11h 25m
1 stop
LHR
PWM
18h 42m
2 stops
Depart: Mon Apr 24 2017 Return: Sat Apr 29 2017 Trip spans 6 days
TAP Portugal
TAP Portugal
PWM
LGW
37h 45m
2 stops
LGW
PWM
36h 44m
2 stops
Depart: Mon Jul 17 2017 Return: Tue Aug 1 2017 Trip spans 16 days
KLM
KLM
PWM
LCY
15h 50m
2 stops
LCY
PWM
19h 07m
2 stops
Depart: Sat May 13 2017 Return: Fri May 26 2017 Trip spans 14 days
United
United
PWM
LHR
28h 30m
1 stop
LHR
PWM
12h 10m
1 stop
Depart: Fri Apr 7 2017 Return: Sun Apr 16 2017 Trip spans 10 days
$6341
Select
Delta
Delta
PWM
LHR
13h 30m
1 stop
LHR
PWM
15h 10m
1 stop
Depart: Sat Apr 22 2017 Return: Sat Apr 29 2017 Trip spans 8 days
$6841
Select
Delta
Delta
PWM
LHR
13h 30m
1 stop
LHR
PWM
14h 36m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Portland
$773
Destination

London
only $773
only $846
only $820