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Cheap flights from Portland to London from $226

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 London departing on 4/27. 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
0 bags

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Find the cheapest flights from Portland to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:30 pm - 12:55 pm
PDX
-
LTN
13h 25m
1 stop
Multiple Airlines Logo
6:25 am - 6:00 pm
LTN
-
PDX
19h 35m
1 stop
$662Multiple Airlines
Tue, Apr 21 - Sun, Apr 26
Multiple Airlines Logo
3:30 pm - 1:10 am
PDX
-
LTN
25h 40m
3 stops
Multiple Airlines Logo
9:40 pm - 9:30 am
LTN
-
PDX
43h 50m
3 stops
$741Multiple Airlines
Mon, Apr 27 - Thu, May 7
Multiple Airlines Logo
3:30 pm - 10:10 pm
PDX
-
LTN
22h 40m
2 stops
Multiple Airlines Logo
9:15 am - 9:10 am
LTN
-
PDX
31h 55m
3 stops
$785Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
3:30 pm - 10:25 pm
PDX
-
LTN
22h 55m
3 stops
Multiple Airlines Logo
9:15 am - 9:10 am
LTN
-
PDX
31h 55m
3 stops
$788Multiple Airlines
Tue, Mar 31 - Tue, Apr 21
Multiple Airlines Logo
10:10 am - 3:30 pm
PDX
-
LTN
21h 20m
2 stops
Multiple Airlines Logo
9:25 pm - 2:45 pm
LTN
-
PDX
25h 20m
2 stops
$793Multiple Airlines
Tue, May 12 - Sat, May 16
Multiple Airlines Logo
3:30 pm - 10:05 pm
PDX
-
LTN
22h 35m
2 stops
Multiple Airlines Logo
9:15 am - 9:10 am
LTN
-
PDX
31h 55m
3 stops
$813Multiple Airlines
Mon, Apr 6 - Fri, Apr 10
Multiple Airlines Logo
10:10 am - 2:00 pm
PDX
-
LTN
19h 50m
2 stops
Multiple Airlines Logo
6:20 am - 9:30 am
LTN
-
PDX
35h 10m
3 stops
$815Multiple Airlines
Fri, May 15 - Fri, May 29
Multiple Airlines Logo
3:30 pm - 3:45 pm
PDX
-
LTN
16h 15m
2 stops
Multiple Airlines Logo
9:15 am - 9:10 am
LTN
-
PDX
31h 55m
3 stops
$817Multiple Airlines
Mon, Apr 13 - Mon, Apr 20
Multiple Airlines Logo
3:30 pm - 8:30 pm
PDX
-
LTN
21h 00m
3 stops
Multiple Airlines Logo
6:25 am - 6:00 pm
LTN
-
PDX
19h 35m
1 stop
$820Multiple Airlines
Tue, Apr 21 - Sun, Apr 26
Multiple Airlines Logo
3:30 pm - 3:30 pm
PDX
-
LTN
16h 00m
2 stops
Multiple Airlines Logo
9:15 am - 9:10 am
LTN
-
PDX
31h 55m
3 stops
$821Multiple Airlines
Tue, Apr 14 - Sat, Apr 18

momondo Fare Finder

 
Customize your flight search to find flights from Portland to London Luton Airport 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 832,500 searches. Data last updated March 17, 2026.
Use the filters below to find and compare flights from Portland to London Luton Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 4/21

3:30 pm-12:55 pm

1 stop13h 25m

London Luton

Sun 4/26

6:25 am-6:00 pm

1 stop19h 35m

$662

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 4/27

3:30 pm-1:10 am

3 stops25h 40m

London Luton

Thu 5/7

9:40 pm-9:30 am

3 stops43h 50m

$741

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 4/14

3:30 pm-10:10 pm

2 stops22h 40m

London Luton

Tue 4/21

9:15 am-9:10 am

3 stops31h 55m

$785

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 3/31

3:30 pm-10:25 pm

3 stops22h 55m

London Luton

Tue 4/21

9:15 am-9:10 am

3 stops31h 55m

$788

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 5/12

10:10 am-3:30 pm

2 stops21h 20m

London Luton

Sat 5/16

9:25 pm-2:45 pm

2 stops25h 20m

$793

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 4/6

3:30 pm-10:05 pm

2 stops22h 35m

London Luton

Fri 4/10

9:15 am-9:10 am

3 stops31h 55m

$813

PortlandLondon

PDX - LTN

PDXLTN

Portland

Fri 5/15

10:10 am-2:00 pm

2 stops19h 50m

London Luton

Fri 5/29

6:20 am-9:30 am

3 stops35h 10m

$815

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 4/13

3:30 pm-3:45 pm

2 stops16h 15m

London Luton

Mon 4/20

9:15 am-9:10 am

3 stops31h 55m

$817

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 4/21

3:30 pm-8:30 pm

3 stops21h 00m

London Luton

Sun 4/26

6:25 am-6:00 pm

1 stop19h 35m

$820

PortlandLondon

PDX - LTN

PDXLTN

Portland

Tue 4/14

3:30 pm-3:30 pm

2 stops16h 00m

London Luton

Sat 4/18

9:15 am-9:10 am

3 stops31h 55m

$821

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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When to book flights from Portland to London Luton Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to London Luton Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to London Luton Airport (PDX to LTN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to London Luton Airport

Fastest flight time

16h 00m

Direct flights

None
The fastest flight from Portland to London Luton Airport takes 16h 00m
There are no direct flights from Portland to London Luton Airport. There are no popular flight routes from Portland to London Luton Airport.
Search flight deals

  • How far is Portland to London Luton by plane?

    There are 4883.1 mi between Portland and London Luton. 16h 00m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to London Luton Airport?

    Prices for flights from Portland Airport to London Luton Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Portland Airport to London Luton Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to London Luton Airport.

  • What documentation or ID do you need to fly to London Luton Airport?

    The required travel and health documents for your London Luton Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Luton Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Portland to London Luton Airport?

    Price Alerts will notify you by email when the price for flights to London Luton Airport from Portland decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Portland to London Luton Airport with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Crawley
Wembley
Hayes
Dartford
Croydon
Harrow
Watford
Brentwood
Guildford
Stansted
Cobham
Folkestone
Romford
Richmond

Why use momondo?

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

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

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

Yes. All flights to London from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to London?

Once all potential Portland to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to London from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Luton Airport trip

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