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Cheap flights from Portland to the United Kingdom from £180

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to the United Kingdom departing on 6/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to the United Kingdom

Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
15:30 - 13:25
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£560Icelandair
Mon, 5 Oct - Wed, 21 Oct
Icelandair Logo
14:45 - 09:55
PDX
-
GLA
11h 10m
1 stop
Icelandair Logo
11:55 - 17:00
GLA
-
PDX
13h 05m
1 stop
£561Icelandair
Mon, 2 Nov - Mon, 9 Nov
Icelandair Logo
15:30 - 13:25
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£569Icelandair
Mon, 21 Sep - Tue, 6 Oct
Multiple Airlines Logo
15:30 - 10:15
PDX
-
EDI
34h 45m
3 stops
Multiple Airlines Logo
09:20 - 11:50
EDI
-
PDX
34h 30m
2 stops
£583Multiple Airlines
Thu, 20 Aug - Wed, 2 Sep
Icelandair Logo
14:45 - 09:55
PDX
-
GLA
11h 10m
1 stop
Icelandair Logo
11:35 - 17:00
GLA
-
PDX
13h 25m
1 stop
£589Icelandair
Sat, 12 Dec - Wed, 23 Dec
Icelandair Logo
14:45 - 09:55
PDX
-
GLA
11h 10m
1 stop
Icelandair Logo
11:35 - 17:00
GLA
-
PDX
13h 25m
1 stop
£590Icelandair
Sat, 12 Dec - Wed, 23 Dec
United Airlines Logo
22:56 - 10:20
PDX
-
MAN
27h 24m
2 stops
United Airlines Logo
06:10 - 23:12
MAN
-
PDX
25h 02m
2 stops
£597United Airlines
Mon, 7 Dec - Thu, 10 Dec
Icelandair Logo
19:00 - 13:40
PDX
-
GLA
10h 40m
1 stop
Icelandair Logo
14:20 - 17:55
GLA
-
PDX
11h 35m
1 stop
£600Icelandair
Sun, 23 Aug - Tue, 15 Sep
British Airways Logo
07:00 - 06:50
PDX
-
LHR
15h 50m
1 stop
British Airways Logo
13:35 - 15:50
LHR
-
PDX
10h 15mdirect
£649British Airways
Mon, 30 Nov - Wed, 9 Dec
British Airways Logo
07:00 - 06:50
PDX
-
LHR
15h 50m
1 stop
British Airways Logo
13:35 - 15:50
LHR
-
PDX
10h 15mdirect
£651British Airways
Mon, 30 Nov - Wed, 9 Dec

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Air Canada flights from Portland to United Kingdom

Our best Air Canada deals on Portland to United Kingdom flight tickets
Air Canada
9 Nov
PDX15:15Portland
12h 35m
1 stop
LHR11:50London Heathrow
24 Nov
LHR14:30London Heathrow
14h 16m
1 stop
PDX20:46Portland
£666
Air Canada
8 Jan
PDX19:10Portland
41h 50m
2 stops
LHR21:00London Heathrow
13 Jan
LHR14:30London Heathrow
26h 56m
1 stop
PDX09:26Portland
£673
Air Canada
19 Jan
PDX10:00Portland
27h 00m
2 stops
LHR21:00London Heathrow
28 Jan
LHR14:30London Heathrow
14h 16m
1 stop
PDX20:46Portland
£674

Icelandair flights from Portland to United Kingdom

Our best Icelandair deals on Portland to United Kingdom flight tickets
Icelandair
5 Oct
PDX15:30Portland
13h 55m
1 stop
GLA13:25Glasgow Intl
21 Oct
GLA14:20Glasgow Intl
11h 35m
1 stop
PDX17:55Portland
£560
Icelandair
2 Nov
PDX14:45Portland
11h 10m
1 stop
GLA09:55Glasgow Intl
9 Nov
GLA11:55Glasgow Intl
13h 05m
1 stop
PDX17:00Portland
£561
Icelandair
21 Sept
PDX15:30Portland
13h 55m
1 stop
GLA13:25Glasgow Intl
6 Oct
GLA14:20Glasgow Intl
11h 35m
1 stop
PDX17:55Portland
£569

momondo Fare Finder

 
Customise your flight search to find flights from Portland to United Kingdom that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 2 August 2026.
Use the filters below to find and compare flights from Portland to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Mon 5/10

15:30-13:25

1 stop13h 55m

Glasgow Intl

Wed 21/10

14:20-17:55

1 stop11h 35m

£560

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Mon 2/11

14:45-09:55

1 stop11h 10m

Glasgow Intl

Mon 9/11

11:55-17:00

1 stop13h 05m

£561

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Mon 21/9

15:30-13:25

1 stop13h 55m

Glasgow Intl

Tue 6/10

14:20-17:55

1 stop11h 35m

£569

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Thu 20/8

15:30-10:15

3 stops34h 45m

Edinburgh Turnhouse

Wed 2/9

09:20-11:50

2 stops34h 30m

£583

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Sat 12/12

14:45-09:55

1 stop11h 10m

Glasgow Intl

Wed 23/12

11:35-17:00

1 stop13h 25m

£589

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Sat 12/12

14:45-09:55

1 stop11h 10m

Glasgow Intl

Wed 23/12

11:35-17:00

1 stop13h 25m

£590

PortlandManchester

PDX - MAN

PDXMAN

Portland

Mon 7/12

22:56-10:20

2 stops27h 24m

Manchester

Thu 10/12

06:10-23:12

2 stops25h 02m

£597
Fastest return journey

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Sun 23/8

19:00-13:40

1 stop10h 40m

Glasgow Intl

Tue 15/9

14:20-17:55

1 stop11h 35m

£600

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 30/11

07:00-06:50

1 stop15h 50m

London Heathrow

Wed 9/12

13:35-15:50

Nonstop10h 15m

£649

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 30/11

07:00-06:50

1 stop15h 50m

London Heathrow

Wed 9/12

13:35-15:50

Nonstop10h 15m

£651

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Portland to United Kingdom

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to United Kingdom?

The cheapest month to fly to United Kingdom from Portland is in January. Flight prices, which tend to average around £529, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of January, then departing from Portland during the month November is also very affordable. Most momondo users find prices during this month for around £535.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Portland to United Kingdom is on a Tuesday. Travellers who choose to depart for United Kingdom on a Tuesday will often find tickets for as low as £540. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Portland to United Kingdom for around £857.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £527. Try not to purchase tickets in the evening because they tend to be around £801. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Portland to United Kingdom flight route?

Fly from Portland to London Heathrow for the best Portland - United Kingdom flight prices

How far in advance should I book a flight from Portland to the United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £686 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Portland for as low as £618 on momondo.

What cabin class options are available on Portland to United Kingdom flights?

There are 2 cabin classes available to choose from on Portland to United Kingdom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland to United Kingdom flights?

You could potentially save up to 27% on your flight if you consider stops on a Portland to United Kingdom flight.

Cheap Portland to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to United Kingdom

Best price found

£778

Fastest flight time

9h 30m

Direct flights

Every day

Airports in United Kingdom

1,285 airports
The best flight deal from Portland to United Kingdom found on momondo in the last 72 hours is £778
The fastest flight from Portland to United Kingdom takes 9h 30m
Direct flights go from Portland to United Kingdom every day.
There are 1,285 airports in United Kingdom. From Portland there are direct flights to London Heathrow (LHR).
Search flight deals

Frequently asked questions about flying from Portland to the United Kingdom

  • When did momondo last update prices for flights from Portland Airport to United Kingdom?

    Prices for flights from Portland Airport to United Kingdom are updated daily.

  • How many operators does momondo search for flights from Portland Airport to United Kingdom?

  • How old do you have to be to fly from Portland Airport to United Kingdom?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents you'll need for your trip to United Kingdom may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United Kingdom. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Portland to United Kingdom?

Best airlines flying from Portland to United Kingdom

Compare and see reviews for airlines that fly from Portland to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £439Free CancellationRating
6.7
8,135 reviews
Search British Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to United Kingdom?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to United Kingdom . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to United Kingdom with flexible booking policies on momondo?

All flight searches from Portland to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to United Kingdom?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to United Kingdom.

I’m not ready to book a flight from Portland to United Kingdom right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to United Kingdom flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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