Cheap flights from Allentown to London from $449
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to London departing on 7/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Allentown to London
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Delta flights from Allentown to London
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How to get the cheapest flight ticket from Allentown to London
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 typical price of a round-trip flight between Allentown and London?
What is the cheapest day to depart on your flight to London?
The cheapest day to depart from Allentown to London is on a Thursday. Travelers who choose to depart for London on a Thursday will often find tickets for as low as $774. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,504. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.
What is the cheapest time of day to depart on your flight to London?
Flying to London from Allentown in the morning is the least expensive time of day to depart. momondo users have found prices as low as $817 when looking at flights departing in the morning. Flights to London are more costly in the evening, with an average ticket price of $1,154. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest airline that flies from Allentown-Bethlehem to London?
Delta is the most popular carrier operating from Allentown-Bethlehem to London
What airlines fly to London?
United Airlines, British Airways and Iberia are the top three most popular airlines that fly to London from Allentown according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to London. Keep in mind that there are 20 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.
When to book flights from Allentown to London
Cheap Allentown to London (ABE to LON) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Allentown to London
How far is Allentown-Bethlehem to London by plane?
There are 3523.4 mi between Allentown-Bethlehem and London. In terms of flight time, this usually takes a little over 12h 20m.
When did momondo last update prices for flights from Allentown-Bethlehem Airport to London?
Prices for flights from Allentown-Bethlehem Airport to London are refreshed on a daily basis.
How many operators does momondo search for flights from Allentown-Bethlehem Airport to London?
As of May 2025, there are 3 operators available to choose from for flights from Allentown-Bethlehem Airport to London.
How old do you have to be to fly from Allentown-Bethlehem Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Allentown-Bethlehem Airport to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Allentown to London?
Based on momondo bookings for flights between Allentown and London, the leading airline is American Airlines, making up 100% of the total bookings.
Best airlines flying from Allentown to London
Compare and see reviews for airlines that fly from Allentown to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $575 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $597 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom $639 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near London?
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Why should I use momondo to find a flight deal from Allentown to London?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Allentown to London for you.
Can I find flights from Allentown to London with flexible booking policies on momondo?
Yes. All flights to London from Allentown on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Allentown to London?
momondo helps you find the best flight between Allentown 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 Allentown to London right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to London from Allentown. 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.