To Belfast

Cheap Flights from Philadelphia to Belfast

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Philadelphia

RatePunk searches hundreds of travel sites at once for deals on flights to Belfast

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Philadelphia to Belfast

Explore current cheapest deals departing from Philadelphia to Belfast

Round trip

Sort by: Cheapest

August 2 - August 18

Cheapest

PHL - Belfast

$918

$721

Round trip

July 27 - August 22

Best

PHL - Belfast

$952

$733

Round trip

July 27 - August 26

Best

PHL - Belfast

$952

$734

Round trip

August 16 - August 24

PHL - Belfast

$981

$786

Round trip

July 20 - July 27

Earliest

PHL - Belfast

$993

$854

Round trip

July 27 - August 26

PHL - Belfast

$873

$882

Round trip

September 13 - September 16

PHL - Belfast

$908

$888

Round trip

September 20 - September 24

PHL - Belfast

$924

$889

Round trip

September 21 - September 25

PHL - Belfast

$925

$889

Round trip

November 16 - November 18

PHL - Belfast

$897

$889

Round trip

Unlock all 500+ flight deals to Belfast and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Philadelphia to Belfast

A typical journey from Philadelphia to Belfast takes about 15h 43m, including connections. This is a long-haul route, covering a distance of 5227 kilometers. Given that most itineraries connect at least once, this duration accounts for the time spent on layovers.

For travelers seeking cheap flights from Philadelphia to Belfast, prices right now are above the typical level. Over a 90-day window, fares typically range from $461–$618, with a median of $510. Currently, 50% of recent fares are classified as a good price.

When is the cheapest time to fly from Philadelphia to Belfast? The most affordable month to fly is typically September, with a median fare of $409. Following closely, August also offers competitive prices, with a median of $426. April is another good option, with median fares around $443.

Most itineraries for this route connect at least once, as 0% of recent fares were direct flights from Philadelphia to Belfast. When a connection is necessary, the typical number of stopovers is 2. New deals show up several times a week for this route, so setting a price alert can be beneficial.

How much is a round trip from Philadelphia to Belfast

Regular price: $777 - $1,109

Prices from Philadelphia to Belfast are currently below the regular range.

The regular price range for flights from Philadelphia to Belfast is typically between $777 and $1109. The current lowest deal is $721 with Frontier Airlines, for travel from August 2 to August 18.

now $721

Low $777

High $1,109

The cheapest time to fly from Philadelphia to Belfast

Flights from Philadelphia to Belfast are cheapest in September, with a median price of $409. The most expensive month to fly is May, with a median price of $647. Prices are generally lower from January to September.

September

Cheapest

Flights from $409

May

Most Expensive

Flights from $647

Jan

Apr

May

Jun

Aug

Sep

Direct flights from Philadelphia to Belfast

easyJet UK

Frontier Airlines

Norse Atlantic UK

JetBlue Airways

Last-minute flights going from Philadelphia to Belfast

Sun, Jun 21

⌛ Last-Minute

PHL - Belfast

Philadelphia (PHL) - Belfast (BFS)

Aer Lingus, easyJet UK

$1,035

$2,169

One-way

Sun, Jun 21

⌛ Last-Minute

PHL - Belfast

Philadelphia (PHL) - Belfast (BFS)

Aer Lingus, easyJet UK

$1,035

$2,321

One-way

Fri, Jul 10

⌛ Last-Minute

PHL - Belfast

Philadelphia (PHL) - Belfast (BFS)

Frontier Airlines

$1,009

$1,103

One-way

Mon, Jul 13

⌛ Last-Minute

TTN - Belfast

Trenton (TTN) - Belfast (BFS)

Frontier Airlines

$909

$1,279

One-way

Tue, Jul 14

⌛ Last-Minute

PHL - Belfast

Philadelphia (PHL) - Belfast (BFS)

JetBlue Airways, Norse Atlantic UK, easyJet UK

$947

$961

One-way

Tue, Jul 14

⌛ Last-Minute

PHL - Belfast

Philadelphia (PHL) - Belfast (BFS)

JetBlue Airways, Norse Atlantic UK, easyJet UK

$949

$962

One-way

Biggest price drops on these dates for flights from Philadelphia to Belfast

26 nights

Jul 27 - Aug 22

$952 → $733

23%

30 nights

Jul 27 - Aug 26

$952 → $734

23%

16 nights

Aug 2 - Aug 18

$918 → $721

21%

8 nights

Aug 16 - Aug 24

$981 → $786

20%

Popular Airports to fly from Philadelphia to Belfast

Philadelphia - Belfast route insights

💸 Price insights

Recent fares are above the typical level.

Recent roundtrip fares from Philadelphia to Belfast typically range from $461 to $618.

📅 Best time to fly

September is historically the cheapest month to fly.

Historically, September has the lowest median price at $409, making it ideal for savings.

⏱️ Flight duration

Flights are typically long-haul with 2 stopovers.

The median flight duration for this route is 15h 43m, typically involving 2 stopovers.

✈️ Airlines & availability

Connecting flights are dominant for this route.

No direct flights are available; connecting flights are the only option for this route.

🏆 Airline highlight

easyJet UK, Frontier Airlines, and Norse Atlantic UK offer frequent deals.

These airlines frequently offer deals for connecting flights from Philadelphia to Belfast.

🎯 Booking tip

Consider booking during September for potential savings.

Historically, September offers the lowest median prices for flights from Philadelphia to Belfast.

Philadelphia main airports to depart from

Philadelphia International (PHL)

Cheapest

Philadelphia International Airport is a good choice for flights from Philadelphia to Belfast.

📍 ~10 km from city center (reachable by car or train)

💸 Flights from ~$721

Belfast main airports to arrive at

George Best Belfast City (BHD)

Cheapest

George Best Belfast City Airport is a convenient arrival option for flights from Philadelphia to Belfast.

📍 ~5 km from Belfast city center (reachable by car)

💸 Flights from ~$705

Belfast International (BFS)

Belfast International Airport is a key arrival point for travelers flying from Philadelphia to Belfast.

📍 ~20 km from Belfast city center (reachable by car)

💸 Flights from ~$721

Airports nearby Belfast used as alternative

George Best Belfast City (BHD)

Consider this airport for convenient domestic UK flights and short-haul business routes due to its city location.

📍 ~5 km from destination city (reachable by public transport)

💸 Flights from ~$705

Belfast International (BFS)

This airport is a primary international gateway for Northern Ireland, operating 24/7 with many low-cost carriers.

📍 ~20 km from destination city

💸 Flights from ~$721

Dublin (DUB)

Cheapest

Dublin offers extensive long-haul connectivity and often competitive pricing, making it a viable alternative.

📍 ~140 km from destination city (reachable by bus)

💸 Flights from ~$354

City of Derry (LDY)

This airport is a quiet alternative within Northern Ireland, offering fast check-in and security processing.

📍 ~100 km from destination city (reachable by car)

💸 Flights from ~$858

Glasgow (GLA)

Glasgow is a major UK hub with varied flights, suitable if other options are unavailable and you can manage a sea crossing.

📍 ~150 km from destination city (requires sea crossing)

💸 Flights from ~$691

Business & First Class Flight Deals to Belfast

76% AI deal score

$6,215

From PHL

Elite

Jul 14

Belfast, United Kingdom

75% AI deal score

$6,215

From PHL

Elite

Jul 11

Belfast, United Kingdom

75% AI deal score

$6,215

From PHL

Elite

Oct 29

Belfast, United Kingdom

70% AI deal score

$7,519

From PHL

Elite

Jul 25

Belfast, United Kingdom

69% AI deal score

$8,432

From PHL

Elite

Jun 21

Belfast, United Kingdom

66% AI deal score

$12,649

Frequently Asked Questions About Flights to Belfast

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking sites can also help uncover better deals. Setting up price alerts may notify you when fares drop for your desired route.

Booking in advance, often several months before your trip, can sometimes result in lower fares. However, prices can fluctuate, so monitoring them over time may help you identify a good booking window. Mid-week bookings are also sometimes associated with better deals.

Yes, comparing nearby airports at both your origin and destination can often reveal more flight options and potentially lower prices. Sometimes, flying into or out of a smaller airport a short distance away can be more cost-effective. Remember to factor in ground transportation costs and time if choosing this option.

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Cheap Flights from Philadelphia to Belfast

Today’s best flight deals from Philadelphia to Belfast

Unlock all 500+ flight deals to Belfast and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Philadelphia to Belfast

How much is a round trip from Philadelphia to Belfast

The cheapest time to fly from Philadelphia to Belfast

Direct flights from Philadelphia to Belfast

Last-minute flights going from Philadelphia to Belfast

Biggest price drops on these dates for flights from Philadelphia to Belfast

Popular Airports to fly from Philadelphia to Belfast

Philadelphia - Belfast route insights

Recent fares are above the typical level.

September is historically the cheapest month to fly.

Flights are typically long-haul with 2 stopovers.

Connecting flights are dominant for this route.

easyJet UK, Frontier Airlines, and Norse Atlantic UK offer frequent deals.

Consider booking during September for potential savings.

Philadelphia main airports to depart from

Belfast main airports to arrive at

Airports nearby Belfast used as alternative

Business & First Class Flight Deals to Belfast

Best Elite deals to Belfast

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Frequently Asked Questions About Flights to Belfast

How can I find cheap flights from Philadelphia to Belfast?

How can I find cheap flights from Philadelphia to Belfast?

When should I book flights from Philadelphia to Belfast?

When should I book flights from Philadelphia to Belfast?

Should I compare nearby airports for flights from Philadelphia to Belfast?

Should I compare nearby airports for flights from Philadelphia to Belfast?

Are direct flights from Philadelphia to Belfast always the best option?

Are direct flights from Philadelphia to Belfast always the best option?