What are the cheapest airlines to fly from Ireland to Delaware one-way?

The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £341. However, be on the lookout for offers from Finnair and British Airways, as they are both options that can get you from Ireland to Delaware for a low price.

How far in advance should I book a flight from Ireland to Delaware?

To save on the cost of your flight from Ireland to Delaware, book at least 20 days before your planned departure. Booking around this time can save you about 55% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £420 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £550.

What is the cheapest month to fly from Ireland to Delaware?

The best pricing can be found in the month of April. Prices to Delaware from Ireland average £457. You can even find prices in April for less than £457, as users have found deals to Delaware from as low as £326. The month of July appears to be one of the more expensive times to travel to Delaware from Ireland. Flying in the targeted month can save you up to 22%.

What is the cheapest time of day to fly from IE to DE?

When flying from Ireland to Delaware, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Ireland to Delaware that include hotel bookings?

Yes. In addition to deals on Ireland to Delaware flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ireland to Delaware?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Delaware.

Can I find deals for business class flights from Ireland to Delaware?

Yes. Cheapflights offers flight deals from Ireland to Delaware by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£578+ Flights from Ireland to Delaware - Compare & Save Big

Cheap flight deals from Ireland to Delaware

Round-trip from	£353
One-way from	£341
Popular in	July
Cheapest in	April
Average price	£480

KLM
20/9-29/9
2 total stops
27h 46m total
Ireland to Delaware

Search Deals

JetBlue
31/5
1 total stop
16h 50m total
Ireland to Delaware

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£48 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

Find flight deals from Ireland to Delaware

Cheapest flights from Ireland to Delaware
Explore the most affordable flight options available from Ireland to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 May 2025.

Wed 26/1108:40DUB - PHL

1 stop12h 40mBritish Airways

Sun 30/1118:40PHL - DUB

1 stop10h 10mBritish Airways

Deal found 1/5£353

Sat 20/916:20DUB - PHL

Nonstop7h 40mAer Lingus

Mon 29/920:30PHL - DUB

Nonstop6h 40mAer Lingus

Deal found 30/4£362

Sat 20/905:55DUB - PHL

2 stops20h 21mDelta

Mon 29/917:59PHL - DUB

2 stops16h 01mDelta

Deal found 1/5£364

Wed 3/909:30DUB - PHL

Nonstop7h 15mFinnair

Sun 21/918:45PHL - DUB

Nonstop6h 45mFinnair

Deal found 30/4£372

Wed 17/909:30DUB - PHL

Nonstop7h 15mMultiple Airlines

Mon 29/918:45PHL - DUB

Nonstop6h 45mMultiple Airlines

Deal found 1/5£380

Wed 19/1109:00DUB - PHL

2 stops37h 22mUnited Airlines

Fri 28/1114:37PHL - DUB

1 stop14h 28mUnited Airlines

Deal found 30/4£421

Mon 9/610:40DUB - PHL

1 stop10h 57mJetBlue

Mon 16/619:20PHL - DUB

1 stop8h 40mJetBlue

Deal found 1/5£454

Wed 12/1111:30DUB - PHL

Nonstop7h 25mIberia

Sun 30/1121:10PHL - DUB

Nonstop6h 30mIberia

Deal found 30/4£459

Wed 26/1112:55DUB - PHL

2 stops37h 37mSWISS

Sun 30/1117:35PHL - DUB

2 stops43h 15mSWISS

Deal found 1/5£460

Sat 17/513:15DUB - PHL

2 stops14h 15mAir France

Sun 25/513:00PHL - DUB

1 stop16h 00mAir France

Deal found 30/4£492

Sat 5/713:45DUB - PHL

1 stop11h 28mAmerican Airlines

Sat 19/718:37PHL - DUB

1 stop12h 03mAmerican Airlines

Deal found 1/5£504

Thu 8/512:30SNN - PHL

2 stops26h 15mUnited Airlines

Tue 13/506:30PHL - SNN

2 stops22h 45mUnited Airlines

Deal found 29/4£531

Best flights from Ireland to Delaware
Discover carefully curated flight deals from Ireland to Delaware that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 May 2025.

Sat 20/915:00DUB - PHL

1 stop11h 16mKLM

Mon 29/913:15PHL - DUB

1 stop16h 30mKLM

Deal found 1/5£353

Thu 4/908:35DUB - PHL

1 stop12h 50mBritish Airways

Wed 10/918:30PHL - DUB

1 stop12h 25mBritish Airways

Deal found 30/4£358

Sat 20/916:20DUB - PHL

Nonstop7h 40mAer Lingus

Mon 29/920:30PHL - DUB

Nonstop6h 40mAer Lingus

Deal found 30/4£362

Sat 20/905:55DUB - PHL

2 stops20h 21mDelta

Mon 29/917:59PHL - DUB

2 stops16h 01mDelta

Deal found 1/5£364

Wed 3/909:30DUB - PHL

Nonstop7h 15mFinnair

Sun 21/918:45PHL - DUB

Nonstop6h 45mFinnair

Deal found 30/4£372

Wed 17/909:30DUB - PHL

Nonstop7h 15mMultiple Airlines

Mon 29/918:45PHL - DUB

Nonstop6h 45mMultiple Airlines

Deal found 1/5£380

Mon 9/610:40DUB - PHL

1 stop10h 57mJetBlue

Mon 16/619:20PHL - DUB

1 stop8h 40mJetBlue

Deal found 1/5£454

Sat 17/513:15DUB - PHL

2 stops14h 15mAir France

Sun 25/513:00PHL - DUB

1 stop16h 00mAir France

Deal found 30/4£492

Sat 5/709:30DUB - PHL

Nonstop7h 15mIberia

Sat 19/717:48PHL - DUB

1 stop12h 52mIberia

Deal found 1/5£493

Sat 5/713:45DUB - PHL

1 stop11h 28mAmerican Airlines

Sat 19/718:37PHL - DUB

1 stop12h 03mAmerican Airlines

Deal found 1/5£504

Thu 19/609:20DUB - PHL

2 stops19h 09mUnited Airlines

Mon 30/619:59PHL - DUB

1 stop30h 11mUnited Airlines

Deal found 30/4£515

Sat 17/508:40DUB - PHL

2 stops17h 43mSWISS

Sun 25/517:35PHL - DUB

2 stops13h 35mSWISS

Deal found 1/5£549

Direct flights from Ireland to Delaware
Explore direct flight options from Ireland to Delaware based on user searches, and compare prices and availability for your desired travel dates. Data last updated 1 May 2025.

Sat 20/916:20DUB - PHL

Nonstop7h 40mAer Lingus

Mon 29/920:30PHL - DUB

Nonstop6h 40mAer Lingus

Deal found 30/4£362

Wed 3/909:30DUB - PHL

Nonstop7h 15mFinnair

Sun 21/918:45PHL - DUB

Nonstop6h 45mFinnair

Deal found 30/4£372

Wed 17/909:30DUB - PHL

Nonstop7h 15mMultiple Airlines

Mon 29/918:45PHL - DUB

Nonstop6h 45mMultiple Airlines

Deal found 1/5£380

Wed 11/609:30DUB - PHL

Nonstop7h 10mIberia

Sun 22/618:50PHL - DUB

Nonstop6h 40mIberia

Deal found 30/4£493

Tue 30/916:20DUB - PHL

Nonstop7h 40mAmerican Airlines

Mon 6/1018:55PHL - DUB

Nonstop6h 35mAmerican Airlines

Deal found 1/5£512

Last-minute flights from Ireland to Delaware
Discover last-minute flight deals from Ireland to Delaware. Data last updated 1 May 2025 and is based on user searches.

Thu 1/509:50DUB - PHL

2 stops17h 16mAir Canada

Sat 10/516:50PHL - DUB

1 stop10h 25mAir Canada

Deal found 30/4£591

Thu 1/509:30DUB - PHL

Nonstop7h 10mIberia

Sat 10/518:50PHL - DUB

Nonstop6h 40mIberia

Deal found 30/4£602

Thu 1/516:20DUB - PHL

Nonstop7h 40mAer Lingus

Sat 10/518:50PHL - DUB

Nonstop6h 40mAer Lingus

Deal found 1/5£655

Tue 6/509:30DUB - PHL

Nonstop7h 00mFinnair

Thu 8/518:50PHL - DUB

Nonstop6h 40mFinnair

Deal found 1/5£726

Wed 7/509:50DUB - PHL

1 stop10h 58mUnited Airlines

Wed 14/515:10PHL - DUB

2 stops15h 00mUnited Airlines

Deal found 30/4£518

Thu 8/512:30SNN - PHL

2 stops26h 15mUnited Airlines

Tue 13/506:30PHL - SNN

2 stops22h 45mUnited Airlines

Deal found 29/4£531

Fri 9/515:30DUB - PHL

1 stop28h 45mBritish Airways

Sun 18/522:10PHL - DUB

1 stop11h 05mBritish Airways

Deal found 29/4£396

Fri 9/511:35DUB - PHL

1 stop18h 09mMultiple Airlines

Sun 18/517:35PHL - DUB

2 stops13h 35mMultiple Airlines

Deal found 29/4£554

Sat 17/520:10DUB - PHL

1 stop21h 40mBritish Airways

Sun 25/518:30PHL - DUB

1 stop12h 25mBritish Airways

Deal found 1/5£368

Sat 17/509:30DUB - PHL

Nonstop7h 00mFinnair

Sun 25/518:50PHL - DUB

Nonstop6h 40mFinnair

Deal found 1/5£381

Sat 17/513:15DUB - PHL

2 stops14h 15mAir France

Sun 25/513:00PHL - DUB

1 stop16h 00mAir France

Deal found 30/4£492

Sat 17/509:50DUB - PHL

1 stop10h 58mMultiple Airlines

Sun 25/517:35PHL - DUB

2 stops13h 35mMultiple Airlines

Deal found 30/4£546

One-way flights from Ireland to Delaware
Search for one-way flight options from Ireland to Delaware. Find affordable one-way fares based on user searches. Data last updated 1 May 2025.

Sat 31/510:40DUB - PHL

1 stop16h 50mJetBlue

Deal found 30/4£341

Fri 30/509:30DUB - PHL

Nonstop7h 00mFinnair

Deal found 30/4£439

Fri 30/508:35DUB - PHL

1 stop12h 45mBritish Airways

Deal found 30/4£456

Mon 30/616:00DUB - PHL

1 stop12h 14mMultiple Airlines

Deal found 30/4£470

Fri 6/608:35DUB - PHL

2 stops17h 27mAmerican Airlines

Deal found 30/4£503

Sat 2/817:30SNN - PHL

1 stop26h 55mBritish Airways

Deal found 29/4£629

Tue 5/812:30SNN - PHL

2 stops30h 59mUnited Airlines

Deal found 29/4£936

Fri 6/605:30DUB - PHL

2 stops21h 59mTAP AIR PORTUGAL

Deal found 30/4£1,799

Fri 6/605:55DUB - PHL

2 stops20h 36mDelta

Deal found 1/5£1,852

Mon 21/721:10DUB - PHL

3 stops29h 24mScandinavian Airlines

Deal found 1/5£1,871

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ireland to Delaware that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Sat 20/9

15:00-21:16

1 stop11h 16m

Philadelphia

Mon 29/9

13:15-10:45

1 stop16h 30m

£353

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Thu 4/9

08:35-16:25

1 stop12h 50m

Philadelphia

Wed 10/9

18:30-11:55

1 stop12h 25m

£358

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Sat 20/9

16:20-19:00

Nonstop7h 40m

Philadelphia

Mon 29/9

20:30-08:10

Nonstop6h 40m

£362

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Sat 20/9

05:55-21:16

2 stops20h 21m

Philadelphia

Mon 29/9

17:59-15:00

2 stops16h 01m

£364

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Wed 3/9

09:30-11:45

Nonstop7h 15m

Philadelphia

Sun 21/9

18:45-06:30

Nonstop6h 45m

£372

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Wed 17/9

09:30-11:45

Nonstop7h 15m

Philadelphia

Mon 29/9

18:45-06:30

Nonstop6h 45m

£380

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Mon 9/6

10:40-16:37

1 stop10h 57m

Philadelphia

Mon 16/6

19:20-09:00

1 stop8h 40m

£454

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Sat 17/5

13:15-22:30

2 stops14h 15m

Philadelphia

Sun 25/5

13:00-10:00

1 stop16h 00m

£492

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Sat 5/7

09:30-11:45

Nonstop7h 15m

Philadelphia

Sat 19/7

17:48-11:40

1 stop12h 52m

£493

DublinPhiladelphia

DUB - PHL

DUBPHL

Dublin

Sat 5/7

13:45-20:13

1 stop11h 28m

Philadelphia

Sat 19/7

18:37-11:40

1 stop12h 03m

£504

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 24 results

Best time to book a flight from Ireland to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Ireland with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ireland to Delaware

Rainfall in Delaware by month

In terms of precipitation, rainfall in Delaware ranges from 73.0 - 108.0 inches per month. July is typically the wettest month, when rainfall can reach 108.0 mm. February is typically the driest time to visit Delaware when rainfall is around 73.0 mm.

Temperature in Delaware by month

If weather is an important factor for your trip to Delaware, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing Delaware

Read through reviews of airlines operating flights from Ireland to Delaware, such as Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,934 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,275 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,588 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.4

Good

1,446 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines to fly from Ireland to Delaware one-way?
The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £341. However, be on the lookout for offers from Finnair and British Airways, as they are both options that can get you from Ireland to Delaware for a low price.
Can I find deals for flights from Ireland to Delaware that include hotel bookings?
Yes. In addition to deals on Ireland to Delaware flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ireland to Delaware?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Delaware.
Can I find deals for business class flights from Ireland to Delaware?
Yes. Cheapflights offers flight deals from Ireland to Delaware by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ireland to Delaware

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Direct flights to United States

Fly with Cheapflights

How does Cheapflights help users find flights from Ireland to Delaware?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Delaware from Ireland today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ireland to Delaware?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ireland to Delaware for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ireland to Delaware with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ireland to Delaware flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ireland to Delaware become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Delaware from Ireland today and book when prices fit your budget.

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Cheap flights from Ireland to Delaware from £341

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ireland to Delaware

Keep the following information in mind while searching for Ireland to Delaware flight deals. Data was last updated 1 May 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ireland to Delaware

Cheapest flights from Ireland to DelawareExplore the most affordable flight options available from Ireland to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 May 2025.

Explore the most affordable flight options available from Ireland to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 May 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ireland to Delaware that are best for you.

Best time to book a flight from Ireland to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Ireland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ireland to Delaware

Rainfall in Delaware by month

Plan your trip to Delaware by taking into account the average rainfall totals by month.

Temperature in Delaware by month

Plan your trip to Delaware by taking into account the average temperature totals by month.

Reviews of airlines servicing Delaware

Read through reviews of airlines operating flights from Ireland to Delaware, such as Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ireland to Delaware. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Ireland to Delaware one-way?

Can I find deals for flights from Ireland to Delaware that include hotel bookings?

How can I find direct flights from Ireland to Delaware?

Can I find deals for business class flights from Ireland to Delaware?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ireland to Delaware

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ireland to Delaware?

Why should you use Cheapflights to find cheap flight tickets from Ireland to Delaware?

Can Cheapflights find flights from Ireland to Delaware with no change fees?

Can Cheapflights notify me if prices for flights from Ireland to Delaware become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Ireland to Delaware
Explore the most affordable flight options available from Ireland to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 May 2025.