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Cheap flights from Philadelphia to London from $336

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 9/6. 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

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Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:25 pm - 12:25 pm
PHL
-
LTN
11h 00m
1 stop
Multiple Airlines Logo
12:25 pm - 6:55 pm
LTN
-
PHL
11h 30m
1 stop
$746Multiple Airlines
Thu, Aug 20 - Mon, Aug 24
Multiple Airlines Logo
8:25 pm - 4:05 pm
PHL
-
LTN
14h 40m
1 stop
Multiple Airlines Logo
9:25 am - 6:55 pm
LTN
-
PHL
14h 30m
1 stop
$750Multiple Airlines
Sat, May 2 - Thu, May 7
Multiple Airlines Logo
8:25 pm - 3:25 pm
PHL
-
LTN
14h 00m
1 stop
Multiple Airlines Logo
12:25 pm - 6:55 pm
LTN
-
PHL
11h 30m
1 stop
$760Multiple Airlines
Wed, Aug 19 - Mon, Aug 24
Multiple Airlines Logo
8:25 pm - 3:25 pm
PHL
-
LTN
14h 00m
1 stop
Multiple Airlines Logo
12:25 pm - 6:55 pm
LTN
-
PHL
11h 30m
1 stop
$761Multiple Airlines
Wed, Aug 19 - Mon, Aug 24
Multiple Airlines Logo
8:25 pm - 4:05 pm
PHL
-
LTN
14h 40m
1 stop
Multiple Airlines Logo
6:20 am - 6:55 pm
LTN
-
PHL
17h 35m
1 stop
$768Multiple Airlines
Sat, May 2 - Fri, May 8
Multiple Airlines Logo
6:00 am - 8:20 am
PHL
-
LTN
21h 20m
2 stops
Multiple Airlines Logo
9:25 am - 6:55 pm
LTN
-
PHL
14h 30m
1 stop
$787Multiple Airlines
Sat, May 2 - Thu, May 7
Multiple Airlines Logo
8:25 pm - 3:30 pm
PHL
-
LTN
14h 05m
1 stop
Multiple Airlines Logo
9:40 am - 6:55 pm
LTN
-
PHL
14h 15m
1 stop
$788Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
8:25 pm - 3:45 pm
PHL
-
LTN
14h 20m
1 stop
Multiple Airlines Logo
8:15 am - 6:55 pm
LTN
-
PHL
15h 40m
1 stop
$790Multiple Airlines
Mon, Jun 1 - Mon, Jun 8
Multiple Airlines Logo
4:20 pm - 3:30 pm
PHL
-
LTN
18h 10m
2 stops
Multiple Airlines Logo
6:15 am - 3:38 pm
LTN
-
PHL
14h 23m
2 stops
$824Multiple Airlines
Tue, May 19 - Wed, May 27
Multiple Airlines Logo
4:20 pm - 3:30 pm
PHL
-
LTN
18h 10m
2 stops
Multiple Airlines Logo
6:15 am - 9:33 pm
LTN
-
PHL
20h 18m
3 stops
$827Multiple Airlines
Tue, May 19 - Wed, May 27

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 22, 2026.
Use the filters below to find and compare flights from Philadelphia to London Luton Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Thu 8/20

8:25 pm-12:25 pm

1 stop11h 00m

London Luton

Mon 8/24

12:25 pm-6:55 pm

1 stop11h 30m

$746

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Sat 5/2

8:25 pm-4:05 pm

1 stop14h 40m

London Luton

Thu 5/7

9:25 am-6:55 pm

1 stop14h 30m

$750

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Wed 8/19

8:25 pm-3:25 pm

1 stop14h 00m

London Luton

Mon 8/24

12:25 pm-6:55 pm

1 stop11h 30m

$760

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Wed 8/19

8:25 pm-3:25 pm

1 stop14h 00m

London Luton

Mon 8/24

12:25 pm-6:55 pm

1 stop11h 30m

$761

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Sat 5/2

8:25 pm-4:05 pm

1 stop14h 40m

London Luton

Fri 5/8

6:20 am-6:55 pm

1 stop17h 35m

$768

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Sat 5/2

6:00 am-8:20 am

2 stops21h 20m

London Luton

Thu 5/7

9:25 am-6:55 pm

1 stop14h 30m

$787

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 8/18

8:25 pm-3:30 pm

1 stop14h 05m

London Luton

Tue 8/25

9:40 am-6:55 pm

1 stop14h 15m

$788

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 6/1

8:25 pm-3:45 pm

1 stop14h 20m

London Luton

Mon 6/8

8:15 am-6:55 pm

1 stop15h 40m

$790

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 5/19

4:20 pm-3:30 pm

2 stops18h 10m

London Luton

Wed 5/27

6:15 am-3:38 pm

2 stops14h 23m

$824

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 5/19

4:20 pm-3:30 pm

2 stops18h 10m

London Luton

Wed 5/27

6:15 am-9:33 pm

3 stops20h 18m

$827

Flights are sorted by cheapest round-trip flights first.

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

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

Cheap Philadelphia to London Luton Airport (PHL to LTN) flight deals and tips

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

Fastest flight time

10h 00m

Direct flights

None
The fastest flight from Philadelphia to London Luton Airport takes 10h 00m
There are no direct flights from Philadelphia to London Luton Airport. There are no popular flight routes from Philadelphia to London Luton Airport.
Search flight deals

  • How far is Philadelphia to London Luton by plane?

    A flight from Philadelphia to London Luton will travel around 3521.0 mi. A reasonable flight in good conditions will take 10h 00m.

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

    Prices for flights from Philadelphia Airport to London Luton Airport refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to London Luton Airport.

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

    The travel and health documents required for your trip to London Luton Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Luton Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Philadelphia from London Luton Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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 Philadelphia to London?

It is quick and easy to find Philadelphia to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. momondo allows you to filter the results for Philadelphia to London flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Philadelphia and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Philadelphia to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Luton Airport trip

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