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Cheap flights from Philadelphia to London from $311

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 7/27. 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
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 - 3:45 pm
PHL
-
LTN
14h 20m
1 stop
Multiple Airlines Logo
8:15 am - 6:55 pm
LTN
-
PHL
15h 40m
1 stop
$654Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Multiple Airlines Logo
8:25 pm - 11:25 am
PHL
-
LTN
10h 00m
1 stop
Multiple Airlines Logo
9:00 am - 6:55 pm
LTN
-
PHL
14h 55m
1 stop
$666Multiple Airlines
Sun, May 10 - Sun, May 17
Multiple Airlines Logo
8:25 pm - 1:25 pm
PHL
-
LTN
12h 00m
1 stop
Multiple Airlines Logo
9:40 am - 6:55 pm
LTN
-
PHL
14h 15m
1 stop
$677Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
8:25 pm - 12:45 pm
PHL
-
LTN
11h 20m
1 stop
Multiple Airlines Logo
12:25 pm - 6:55 pm
LTN
-
PHL
11h 30m
1 stop
$705Multiple Airlines
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
8:25 pm - 3:25 pm
PHL
-
LTN
14h 00m
1 stop
Multiple Airlines Logo
9:00 am - 6:55 pm
LTN
-
PHL
14h 55m
1 stop
$716Multiple Airlines
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
8:25 pm - 12:45 pm
PHL
-
LTN
11h 20m
1 stop
Multiple Airlines Logo
8:15 am - 6:55 pm
LTN
-
PHL
15h 40m
1 stop
$719Multiple Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
8:25 pm - 11:25 am
PHL
-
LTN
10h 00m
1 stop
Multiple Airlines Logo
9:00 am - 6:55 pm
LTN
-
PHL
14h 55m
1 stop
$722Multiple Airlines
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
8:25 pm - 2:00 pm
PHL
-
LTN
12h 35m
1 stop
Multiple Airlines Logo
11:00 am - 6:55 pm
LTN
-
PHL
12h 55m
1 stop
$733Multiple Airlines
Fri, Sep 11 - Sat, Sep 19
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
$742Multiple Airlines
Thu, May 14 - Mon, May 18
Multiple Airlines Logo
8:25 pm - 12:45 pm
PHL
-
LTN
11h 20m
1 stop
Multiple Airlines Logo
9:25 am - 6:55 pm
LTN
-
PHL
14h 30m
1 stop
$747Multiple Airlines
Mon, May 11 - Thu, May 21

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 15, 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

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 8/24

8:25 pm-3:45 pm

1 stop14h 20m

London Luton

Mon 8/31

8:15 am-6:55 pm

1 stop15h 40m

$654

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Sun 5/10

8:25 pm-11:25 am

1 stop10h 00m

London Luton

Sun 5/17

9:00 am-6:55 pm

1 stop14h 55m

$666

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 5/5

8:25 pm-1:25 pm

1 stop12h 00m

London Luton

Tue 5/12

9:40 am-6:55 pm

1 stop14h 15m

$677

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 5/11

8:25 pm-12:45 pm

1 stop11h 20m

London Luton

Mon 5/18

12:25 pm-6:55 pm

1 stop11h 30m

$705

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Sun 4/26

8:25 pm-3:25 pm

1 stop14h 00m

London Luton

Sun 5/3

9:00 am-6:55 pm

1 stop14h 55m

$716

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 4/27

8:25 pm-12:45 pm

1 stop11h 20m

London Luton

Mon 5/4

8:15 am-6:55 pm

1 stop15h 40m

$719

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Sun 4/26

8:25 pm-11:25 am

1 stop10h 00m

London Luton

Sun 5/3

9:00 am-6:55 pm

1 stop14h 55m

$722

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Fri 9/11

8:25 pm-2:00 pm

1 stop12h 35m

London Luton

Sat 9/19

11:00 am-6:55 pm

1 stop12h 55m

$733
Quickest round-trip

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Thu 5/14

8:25 pm-12:25 pm

1 stop11h 00m

London Luton

Mon 5/18

12:25 pm-6:55 pm

1 stop11h 30m

$742

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Mon 5/11

8:25 pm-12:45 pm

1 stop11h 20m

London Luton

Thu 5/21

9:25 am-6:55 pm

1 stop14h 30m

$747

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

9h 05m

Direct flights

None
The fastest flight from Philadelphia to London Luton Airport takes 9h 05m
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 9h 05m.

  • 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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